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TECHNICAL SPECIFICATION
FOR
161 kV GAS INSULATED SWITCHGEAR EQUIPMENT
TAIWAN POWER COMPANY
TAIWAN, REPUBLIC OF CHINA
Specification No. GIS2
Date: May, 1995
Table of Contents
1. SCOPE....................................................................................................................................GIS2-1
2. GENERAL REQUIREMENTS ..............................................................................................GIS2-1
2.1. Certification ............................................................................................................GIS2-1
2.2. Information .............................................................................................................GIS2-1
2.3. Exceptions...............................................................................................................GIS2-11
2.4. Guarantee ................................................................................................................GIS2-11
2.5. Award of Contract...................................................................................................GIS2-11
2.6. Drawings, etc., by Seller .........................................................................................GIS2-12
2.7. Work to be done by Seller.......................................................................................GIS2-17
2.8. Work to be done by Taiwan Power Company.........................................................GIS2-17
3. STANDARDS AND SERVICE CONDITIONS.....................................................................GIS2-18
3.1. Standards.................................................................................................................GIS2-18
3.2. Service Conditions..................................................................................................GIS2-18
3.3. Drawings.................................................................................................................GIS2-18
4. DETAILED REQUIREMENTS .............................................................................................GIS2-19
4.1. Type.........................................................................................................................GIS2-19
4.2. Circuit Breaker........................................................................................................GIS2-23
4.3. Disconnecting Switch .............................................................................................GIS2-30
4.4. Earthing Switch ......................................................................................................GIS2-32
4.5. Potential Transformer .............................................................................................GIS2-33
4.6. Current Transformer ...............................................................................................GIS2-34
4.7. Outdoor Bushing and Line Terminal ......................................................................GIS2-35
4.8. Cable Termination...................................................................................................GIS2-36
4.9. Terminal Blocks......................................................................................................GIS2-36
4.10. Nameplate ...............................................................................................................GIS2-36
5. ACCESSORY EQUIPMENT .................................................................................................GIS2-37
5.1. Blind Cover.............................................................................................................GIS2-37
5.2. Gas Filling Cart.......................................................................................................GIS2-37
5.3. Special Tools...........................................................................................................GIS2-37
6. TESTS AND REPORTS.........................................................................................................GIS2-37
6.1. General....................................................................................................................GIS2-37
6.2. Type Test .................................................................................................................GIS2-37
6.3. Routine Tests...........................................................................................................GIS2-38
6.4. Field Tests ...............................................................................................................GIS2-39
6.5. Test Fail Condition .................................................................................................GIS2-40
6.6. Additional Test........................................................................................................GIS2-40
6.7. Test Reports ............................................................................................................GIS2-40
7. INSPECTION .........................................................................................................................GIS2-40
8. SUPERVISION OF INSTALLATION....................................................................................GIS2-41
9. SPARE PARTS .......................................................................................................................GIS2-42
10. WEIGHT LIMITATION AND TRANSPORT RESTRICTIONS...........................................GIS2-42
11. PACKING AND SHIPPING...................................................................................................GIS2-42
APPENDIX I: CLASS B INSPECTION SERVICE REQUIREMENT
APPENDIX II: PRICE SCHEDULE
DRAWINGS
1. Drawing. No. TDS3-15-6093, Rev.a dated 78-12-4
“161 kV Power Circuit Breaker Control Circuit with Single Shot Re-closing.”
2. Drawing. No. TDS4-15-6036, dated Mar. 6, 1983
“Shed Form of Bushing Shell.”
3. Drawing. No. TDT-162-2027E, dated June 14, 1988
“GIS Type Cable Termination for 69 kV & 161 kV XLPE Cable.”
4. Drawing. No. TDT-162-2026C, dated July 7, 1988
“GIS Type Cable Termination for 69 kV & 161 kV Oil-Filled Cable.”
5. TDS4-15-6061A, dated Nov. 3, 1987 “Gas filling cart.”
SPECIFICATION
FOR
161 kV GAS INSULATED SWITCHGEAR EQUIPMENT
Taipower Specification No. GIS2
Date: May, 1995
1. SCOPE
1.1. These specifications cover the design, manufacture, assembly, testing and delivery of 161 kV
Sulfur Hexfluoride (SF6) Gas Insulated Switchgear (GIS) Equipment, complete with accessories
and spare parts to be installed in the substations of Taiwan Power Company.
2. GENERAL REQUIREMENTS
2.1. Certification
2.1.1. The Bidder shall submit a certificate together with his bid, issued by the manufacturer,
certifying that he has manufactured and sold 161 kV (750 kV BIL) or higher voltage class of
Sulfur Hexfluoride (SF6) Gas Insulated Switchgear (GIS) for more than five (5) years.
2.1.2. For 161 kV, 2000A, 40 kA GIS, the manufacturer shall certify that he has delivered more
than fifty (50) bays of the same equipment as offered for a period of at least three (3) years
with satisfactory operation record. There shall be a supply record attached to the Bid, giving
full names and addresses of at least three (3) previous purchasers, ratings, quantity, and
delivery date of those switchgear equipment.
2.1.3. For 161 kV, 2000A, 50 kA GIS, the manufacturer shall certify that he has already delivered
or developed the same equipment as offered. There shall be a certified type test report
attached to the Bid.
2.1.4. If the bidder is a local manufacturer, he should have technical cooperation with a foreign
manufacturer. The experience of the cooperation foreign manufacturer shall meet the
requirement as specified in Paragraphs 2.1.1, 2.1.2 & 2.1.3. The local manufacturer shall
also have a Taipower’s certificate of production ability for the equipment with the same or
higher ratings as being furnished.
2.1.5. Bids will not be considered if the manufacturer’s experience does not meet the requirement
as specified in Paragraphs 2.1.1 and 2.1.2 or Paragraphs 2.1.1 and 2.1.3.
2.2. Information
2.2.1. Bidder shall include in his Bid the drawings, descriptive literature and data, in the Chinese
or English language, as specified below. The drawings, descriptive literature and data
furnished must be identified to show the items in the Bid to which they pertain. The
drawings, descriptive literature and data are required to establish, for the purposes of Bid
evaluation and award, detailed of the products the Bidder proposes to furnish as to design,
materials, components and performance characteristics.
2.2.1.1. Outline drawing showing all GIS arrangement, approximate overall dimensions.
2.2.1.2. Drawings or cuts showing the basic design of the each component with its enclosure
and supporting insulators.
2.2.1.3. A written explanation of the basic principles of the circuit breaker proposed
accompanied with drawings, photographs or sketches which will present a clear
picture of the fundamental principles and general arrangement of the circuit breaker
and operating mechanism.
2.2.1.4. Certified test data on previously produced equipment of the same rating and type,
which may include parts test data, proving ability to meet the specifications and shall
further demonstrate the applicability of these test data to the proposed circuit
breaker.
2.2.1.5. Oscillographic evidence that circuit breaker offered will successfully interrupt all
faults within the interrupting rating and the specified time, with complete
information as to methods and connections used for these test.
2.2.1.6. Description and electrical schematic diagrams of circuit breaker control.
2.2.1.7. Drawings and descriptive information as to the proposed disconnecting switch and
earthing switch and its operating mechanism.
2.2.1.8. Drawings and descriptive information (with accuracy and performance curves): as to
the proposed potential transformer and current transformer.
2.2.1.9. Descriptive information for interlocking device.
2.2.1.10. Drawings and descriptive information as to the outdoor bushing.
2.2.1.11. Complete information, including a flow diagram, showing all valves and pressure
involved on the switchgear gas system.
2.2.1.12. Descriptive information of components and characteristics (with curves showing the
pressure against the temperature) of the SF6 gas furnished.
2.2.1.13. Drawings and descriptive information as to the seal of the enclosure.
2.2.1.14. Drawings and descriptive information of the gas leakage detection system for each
compartment of the switchgear equipment.
2.2.1.15. Descriptive information of dielectric characteristics when SF6 gas at atmosphere
pressure.
2.2.2. Bidder shall submit with each copy of his proposal the following operating and rating data.
2.2.2.1. Complete switchgear
2.2.2.1.1. Nominal voltage rating, kV
2.2.2.1.2. Rated maximum voltage, kV, rms
2.2.2.1.3. Rated frequency, Hz
2.2.2.1.4. Rated SF6 gas pressure at 20 kg/cm2 (gauge pressure)
(a) Circuit breaker compartment
(b) Disconnecting switch compartment
(c) Bus bar compartment
(d) Potential transformer compartment
2.2.2.1.5. Range of SF6 gas pressure required for satisfactory operation, kg/cm2
(gauge pressure)
(a) Circuit breaker
(b) Disconnecting switch and put to earth switch
(c) Bus bar
(d) Potential transformer
2.2.2.1.6. Guaranteed maximum leakage of SF6 gas per each
compartment at 20 , annum
2.2.2.1.7. Enclosure
(a) Circuit breaker
Material
Thickness, mm
Type of surface treatment
(b) Disconnecting switch and earth switch
Material
Thickness, mm
Type of surface treatment
(c) Bus bar
Material
Thickness, mm
Type of surface treatment
(d) Potential transformer
Material
Thickness, mm
Type of surface treatment
2.2.2.1.8. Weight of SF6 gas, kg
(a) Circuit breaker compartment
(b) Disconnecting switch and earth switch compartment
(c) Bushing compartment
(d) Potential transformer compartment
2.2.2.1.9. Pole spacing of bushing between phases, M
2.2.2.1.10. Impulse withstand voltage, 1.2×50 s full wave, kV, crest
2.2.2.1.11. Low-frequency withstand voltage, one-minute, kV, rms
2.2.2.1.12. Low-frequency withstand voltage for 3 seconds at zero
gas pressure, kV, rms
2.2.2.1.13. The total temperature of the parts to be handled by
operator in the normal course of his duty,
2.2.2.1.14. The total temperature of external surfaces accessible to an
operator in the normal course of his duty,
2.2.2.1.15. The capacitance of GIS per bay, f
2.2.2.2. Circuit breaker
2.2.2.2.1. Nominal voltage class, kV
2.2.2.2.2. Rated maximum voltage, kV, rms
2.2.2.2.3. Rated voltage range factor, k
2.2.2.2.4. Rated maximum voltage divided by k, kV, rms
2.2.2.2.5. Rated continuous current, amperes, rms
2.2.2.2.6. Rated short circuit current at rated maximum voltage,
amperes, rms
2.2.2.2.7. Maximum symmetrical interrupting capability, amperes,
rms
2.2.2.2.8. Interrupting capability at rated maximum voltage and the duty cycle of
(a) CO + 15 sec. CO amperes, rms
(b) O + zero sec. + CO amperes, rms
(c) O +zero sec. + CO + 3 min. CO amperes, rms
2.2.2.2.9. 3-second short time current carrying capability, amperes,
rms
2.2.2.2.10. Closing and latching capability, amperes, rms
2.2.2.2.11. Maximum magnetizing current switching capability,
ampere, rms
2.2.2.2.12. Maximum line charging current switching capability,
ampere, rms
2.2.2.2.13. Rated permissible tripping time delay, sec.
2.2.2.2.14. Capacitor bank switching capability, amperes
(a) Single capacitor bank breaking current
(b) Back to back capacitor bank breaking current
(c) Inrush making current
(d) Frequency, Hz
2.2.2.2.15. Dielectric characteristics
(a) Low-frequency withstand voltage, dry, one-minute, kV, rms
Line to line
Line to ground
Across open gap
(b) Impulse withstand voltage, 1.2×50 s full wave, kV, crest
Line to ground
Across open gap
(c) Chopped wave withstand voltage, kV, crest
2 s
3 s
(d) Radio influence voltage at 1000 kHz with 102.5 kV
test voltage, line to ground, V
2.2.2.2.16. Type of circuit breaker
2.2.2.2.17. Number of interrupting units in series per pole
2.2.2.2.18. Open gap of main contact per pole
2.2.2.2.19. Method of controlling voltage division between
interrupting units
2.2.2.2.20. Type of contacts
2.2.2.2.21. Material and surface treatment of contacts
2.2.2.2.22. Temperature of main current carrying conductors
2.2.2.2.23. Material of main current carrying conductors
2.2.2.2.24. Time characteristics at rated control voltage and operating pressure, cycles
(Based on 60 Hz)
(a) Opening time (from energization of trip coil to contact
parting) with 100 rated short-circuit current
(b) Closing time
(c) Adjustable range
(d) Factory adjustment for re-closing time
(e) Maximum interrupting time
1. For 25-100 percent of rated interrupting capacity
2. For 0-25 percent of rated interrupting capacity
(f) Maximum time to interrupt opening resister, if
provided, following breaker interrupting
2.2.2.2.25. Operating mechanism and auxiliaries data:
(a) Type of operating mechanism
(b) Closing current at specified control voltage, Amps
(c) Tripping current at specified control voltage, Amps
(d) Rated control voltage
1. Closing, d-v volts
2. Tripping, d-c volts
3. Minimum for correct closing operation, d-c volts
4. Minimum for correct tripping operation, d-c volts
(e) Heaters for control cubicle and common terminal box, number and size.
watts
2.2.2.2.26. The guaranteed number of interrupting operations at rated
short-circuit current without requiring maintenance
2.2.2.2.27. The guaranteed number of interrupting operations at rated
continuous current without requiring maintenance
2.2.2.2.28. Pneumatic operating mechanism:
(a) Number of closing-opening circuit breaker operations
which can be performed by circuit breaker, starting at
normal working pressure and assuming to compressor
operation.
(b) Time required to charge air system form zero pressure
to rated operating pressure, minutes.
(c) Time required to recharge the applicable system to
fully charged condition after five (5) immediately
successive CO operations without replenishment by
compressor (the five (5) operations starting at fully
charged conditions), minutes.
(d) Number of compressor
(e) Rated pressure, kg/cm2
(f) Rating, m3/min, each
(g) Start and stop pressure, kg/cm2
(h) Close lock-out pressure, kg/cm2
(i) Trip lock-out pressure, kg/cm2
(j) Air receiver material
(k) Air receiver internal protective coating
(l) Volume of air vessel, m3
(m)Compressor motor
Type
Rated voltage, volts
Rated horse power, hp
Phase, frequency
2.2.2.2.29. Spring motor-wound operating mechanism:
Operating motor
(a) Voltage, volts
(b) Nominal output, hp
(c) Phase, frequency
(d) Speed, rpm
(e) Time required for charging the spring, seconds
2.2.2.2.30. Hydraulic operating mechanism:
(a) Rated operating pressure
Closing, kg/cm2
Opening, kg/cm2
(b) Low pressure alarm, kg/cm2
(c) Lock-out pressure, kg/cm2
(d) Start/stop pressure, kg/cm2
(e) Hydraulic pump
Rated voltage, volts
Rated horse power, hp
Phase, frequency
(f) Number of closing-opening circuit breaker operations
which can be performed by circuit breaker, starting
at normal working pressure and assuming no pump
operation.
(g) Time required to charge hydraulic system form zero
pressure to rated operating pressure, minutes.
(h) Time required to recharge the applicable system to
fully charge condition after five immediately
successive CO operations without replenishment by
pump (the five operations starting at fully charged
conditions), minutes.
2.2.2.3. Bus bar
2.2.2.3.1. Rated continuous current, amp, rms
2.2.2.3.2. Insulation level
(a) Low-frequency withstand voltage, one-minute, kV, rms
(b) Impulse withstand voltage, 1.2×50 s full wave, kV,
crest
2.2.2.3.3. Material of bus bar
2.2.2.3.4. Material and surface treatment of bus bar connector
2.2.2.3.5. Temperature rise of bus bar,
2.2.2.3.6. Material of insulators
2.2.2.4. Disconnecting switch
2.2.2.4.1. Rated continuous current, amp., rms
2.2.2.4.2. Momentary current, amp., rms
2.2.2.4.3. 3-second current, amp., rms
2.2.2.4.4. Insulation level
(a) Low-frequency withstand voltage, one-minute, kV,
rms
(b) Impulse withstand voltage, phase to ground,
1.2×50 s full wave, kV, crest
(c) Low-frequency withstand voltage, across open-gap
one-minute, kV, rms
(d) Impulse withstand voltage across open-gap,
1.2×50 s full wave, kV, crest
2.2.2.4.5. Type of contacts
2.2.2.4.6. Material and surface treatment of contacts
2.2.2.4.7. Temperature rise of contacts,
2.2.2.4.8. Type of operating mechanism
2.2.2.4.9. Material of insulators
2.2.2.4.10. Loop current interrupting capability
2.2.2.4.11. Permissible max. voltage at loop current interruption,
volt
2.2.2.4.12. Bus bar charging current interrupting capability at
169 kV, amp., rms
2.2.2.5. Earth switch
2.2.2.5.1. Fault making capability for making proof type ES
amp., rms
2.2.2.5.2. Insulation level
(a) Low-frequency withstand voltage, one-minute, kV,
rms
(b) Impulse withstand voltage, 1.2×50 s full wave,
kV, crest
2.2.2.5.3. Type of contact
2.2.2.5.4. Material of contact
2.2.2.5.5. Guaranteed number of switching induced current without
replace contact
2.2.2.5.6. Type of operating mechanism
2.2.2.5.7. Material of insulators
2.2.2.6. Potential transformer
2.2.2.6.1. Rated primary voltage, kV
2.2.2.6.2. Rated secondary voltage, volt
2.2.2.6.3. Ratio
2.2.2.6.4. Total burden rating, VA
2.2.2.6.5. Total thermal burden rating, VA
2.2.2.6.6. The total number of secondary windings
2.2.2.6.7. ANSI accuracy class
(a) For metering
(b) For relaying
2.2.2.6.8. Insulation level
(a) Primary, low-frequency withstand voltage, one-minute,
kV, rms
(b) Primary, impulse withstand voltage, 1.2×50 s full
wave, kV, crest
(c) Secondary, withstand voltage, one-minute, volt
2.2.2.6.9. Temperature rise
(a) Winding at
ambient temperature
(b) Hottest-spot winding at
ambient temperature
2.2.2.6.10. Type of potential transformer
2.2.2.6.11. Over-voltage rating factor
2.2.2.6.12. Material of insulators
2.2.2.7. Current transformer
2.2.2.7.1. Current transformer ratio
2.2.2.7.2. The total number of CT secondary cores for each phase of
circuit breaker
2.2.2.7.3. ANSI accuracy class
(a) For metering
(b) For relaying
2.2.2.7.4. Secondary, withstand voltage, one-minute, volt
2.2.2.7.5. Temperature rise
(a) Winding at
ambient temperature
(b) Hottest-spot winding at
ambient temperature
2.2.2.7.6. Type of current transformer
2.2.2.7.7. Thermal current rating factor
2.2.2.7.8. Material of insulator
2.2.2.8. Outdoor bushing (if required)
2.2.2.8.1. Rated voltage class, kV
2.2.2.8.2. Rated continuous current, amp., rms
2.2.2.8.3. Insulation level
(a) Low-frequency withstand voltage, kV, rms
1 minute dry
10 seconds wet
(b) Impulse withstand voltage, 1.2×50 s, full wave, kV,
crest
(c) Impulse withstand voltage, chopped wave, kV, crest
2 s
3 s
2.2.2.8.4. Minimum creepage distance, mm
2.2.2.8.5. Permissible safe cantilever loading at terminal pad of
bushing, kg
2.2.2.8.6. Type
2.2.2.8.7. Manufacturer
2.2.2.9. Power supply requirements
2.2.2.9.1. DC voltage, amperes
2.2.2.9.2. AC voltage, phase and amperes
2.2.2.9.3. Total heater load, watts
2.2.2.9.4. Total motor load, watts
2.2.2.9.5. Others
2.2.2.10. General
2.2.2.10.1. Size and weight
(a) Total net weight of switchgear, kg
(b) Heaviest part to be handled during erection
Name of part
Weight, kg
(c) Heaviest part to be handled during transportation
Name of part
Weight, kV
Height, mm
Width, mm
Length, mm
(d) Dimensions after erection
Height overall, mm
Projected floor space mm mm
(e) Height required for maintenance
2.2.2.10.2. Impact loading during circuit breaker operation, kg
2.2.2.10.3. Noise level of breaker when closing, at one meter from
circuit breaker, db
2.2.2.10.4. Noise level of breaker when opening, at one meter from circuit breaker, db
(a) Non-fault
(b) At fault
2.2.2.10.5. Quantity of SF6 gas for complete switchgear, kg
2.2.2.10.6. Recommended spare parts
2.2.2.10.7. Furnish a list of any special tools needed for installation
and/or maintenance and also indicate which of these the
manufacturer proposes to furnish
2.3. Exceptions
2.3.1. The Bidder shall state in his proposal that he has complied with this specifications. If
exceptions are taken, they shall be listed.
2.4. Guarantee
2.4.1. If within two (2) years after shipment from Seller’s factory, any part of the material or
equipment is found defective because of design, workmanship, or quality of material, the
Seller shall at his own expenses, furnish to Taipower CIF Taiwan port, including customer’s
duty if levied, replacement parts of such design, workmanship, and material as may be
acceptable to Taipower.
2.5. Award of Contract
2.5.1. The Contract will be awarded to the responsible and qualified Bidder whose proposal,
conforming to the specifications, will be most advantageous to the Taiwan Power Company
for the project.
2.5.2. The Taiwan Power Company reserves the right to reject any and all proposals without
assigning reasons and to waive any minor defects in the proposals received.
2.6. Drawings, etc., by Seller
2.6.1. Seller’s drawings - Approval:
2.6.1.1. The Seller shall submit, in the English or Chinese language, within forty-five (45)
days after execution of the Contract, four (4) copies of following drawings, data and
descriptive literature to:
Transmission and Substation Projects Department
Taiwan Power Company
73, Ku Ling Street
Taipei, Taiwan 100
Republic of China
for approval. Detailed dimensions in metric units shall be clearly marked on all
drawings.
2.6.1.1.1. Outline drawing showing overall dimensions of the GIS and the relative
location of the each equipment and bus bar.
2.6.1.1.2. Drawing showing the details of the major component, (circuit breaker,
disconnecting switch, earth switch, potential transformer, current transformer,
outdoor bushing, bus bar etc.), with its enclosure and supporting insulators.
These drawings shall be sufficiently detailed to show the general size of all
parts, and physical clearances necessary for disassembly, the minimum
distance to energize metal parts and the weight.
2.6.1.1.3. Bus bar arrangement drawing showing the locations of support insulators
connectors and expansion joint.
2.6.1.1.4. Dimensional drawings of the interrupting chamber and capacitors, if required.
These dimensional drawings shall be sufficiently detailed to show the general
size of all parts. All assemblies shall be shown in a cutaway or cross-sectional
view with all component parts identified.
2.6.1.1.5. Detailed drawings of circuit breaker operating mechanism.
2.6.1.1.6. Detailed drawings of disconnecting switch and earth switch operating
mechanism.
2.6.1.1.7. Schematic wiring diagram of the switchgear. The wiring diagram shall also
include or indicate the following :
(a) The relative locations of the parts.
(b) A material list to show the names, symbols, quantities, ratings, settings,
and manufacturers of the parts.
(c) The terminal layout.
(d) The operating pressures of the pressure switches, if any.
(e) The time settings of the timers or time relays.
(f) The colors and sizes of the wires.
2.6.1.1.8. Complete back connections wiring diagram of the switching. The wiring
diagram shall also include or indicate the following:
(a) The relative locations of the parts.
(b) All terminal block connections.
(c) The colors and sizes of the wires.
2.6.1.1.9. Detailed drawings of the switchgear gas system. The drawings shall include a
flow diagram, showing all valves and pressure switches, and arrangement of
equipment.
2.6.1.1.10. Detailed drawings of gas leakage detection system, including construction,
location and connection wiring diagrams.
2.6.1.1.11. Drawings of nameplate for equipment of switchgear and accessories.
2.6.1.1.12. Detailed drawings of frameworks for all switchgear including working
platform.
2.6.1.1.13. Foundation drawing of switchgear showing location and size of anchor bolts
and forces which the foundation must be capable of resisting.
2.6.1.1.14. Detailed drawings of potential transformer and current transformer with
performance curves.
2.6.1.1.15. Detailed drawings and descriptive information for interlocking device.
2.6.1.1.16. Detailed drawings and descriptive information for outdoor bushing, if required.
2.6.1.1.17. Outline drawing of compressor, pump, receivers, pressure reducing device and
compressor or pump housing. Wiring diagram of the compressor or pump
motors control circuits. Schematic piping diagram of the entire air system,
including safety provisions.
2.6.1.1.18. Shipping details.
2.6.1.1.19. Descriptive bulletins of accessories or parts not otherwise described above.
2.6.1.1.20. Detailed bulletins of the gas filling equipment to be furnished.
2.6.1.1.21. Any other drawings and data required for use in design of the switchgear
assembly installation or related substation facilities.
2.6.1.2. Each drawing shall be identified by a drawing number, contract number, and the
contract item number. All drawings shall be thoroughly checked for accuracy and
completeness. Such checking shall be endorsed on the drawing by a responsible
official of the Seller.
2.6.1.3. Taiwan Power Company will return one copy of all drawings submitted within 30
calendar days after receipt at the Transmission and Substation Projects Department.
Each drawing returned will be appropriately stamped according to one of the
following categories:
"APPROVED"
Seller is authorized to use the drawing for fabrication. Minor changes may be noted
on the drawing. These changes (plus any others made during the course of
fabrication prior to shipment) shall be incorporated in the drawing and re-submit
shall be made prior to shipment of equipment.
"APPROVED WITH CORRECTIONS"
Seller is authorized to use the drawing for fabrication, incorporating the noted
corrections. Re-submit must be made without undue delay.
"RETURNED FOR CORRECTION"
Seller must change drawing and resubmit for approval before fabrication can be
authorized.
"RECEIPT ACKNOWLEDGED"
This is primarily for record purposes for drawings not specifically required
containing supplemental or explanatory information.
It will also be used when drawing submissions are so incomplete as to make
reviewing impractical. This use will be shown in the answering letter. In this case,
the time for drawing approval by the Taiwan Power Company will not start until all
necessary drawings and information are available.
2.6.1.4. If changes are made in the equipment after original approval, the Seller shall
promptly revise the appropriate drawings and submit four (4) prints of each for
approval.
Verbal discussions of drawings, equipment design, or assembly details between the
Seller and Taiwan Power Company shall not be construed as official approval of
drawings, which are required to be submitted specifically for approval.
The time consumed in submitting drawings for approval shall be included in the
time allowed for completion of the contract.
Taiwan Power Company shall have the right to require the Seller to make any
changes in the designs necessary to make the equipment conform to the
requirements of these specifications without additional cost to the Taiwan Power
Company and the requirement of such changes shall not be accepted as justification
for an extension of time.
Where a drawing is superseded due to a change in design or any other reason, the
new drawing shall state the number of the superseded drawing.
2.6.1.5. Taiwan Power Company's approval of drawings shall in no way relieve the Seller of
his responsibility for supplying equipment in strict accordance with the requirement
of the contract specification.
2.6.1.6. Shipment of the equipment will not be allowed until all necessary drawings are
approved.
2.6.2. Final Drawings, Instruction Books and Information
2.6.2.1. The Seller shall furnish the following drawing and instruction books, in the English
language, to reach
Transmission and Substation Projects Department
Taiwan Power Company
73, Ku Ling Street
Taipei, Taiwan 100
Republic of China
not later than the date that the equipment contracted is ready for delivery from the
Seller's works.
2.6.2.2. The Seller shall furnish following quantity of complete installation, operation and
maintenance instruction books for the circuit breaker, disconnecting switch, earth
switch, potential transformer, current transformer, and all accessory equipment that
may be included therewith. Any changes in subsequent units requiring additions to
or changes in the instructions, drawings or data in the books shall be immediately
covered by addenda and revised drawings.
2.6.2.2.1. Eight (8) books for a lot of switchgear equipment being furnished.
2.6.2.2.2. Three (3) books for each switchgear equipment being furnished.
2.6.2.3. When the equipment, as finally accepted, differs in any way from that described in
the instruction book furnished, the instruction book shall be revised to reflect this
difference and copies of this revision shall be furnished for each book. Each revision
shall be identified and the identification shall include the number or identifying
mark of the superseded part or parts of the instruction book.
2.6.2.4. The instruction books shall be provided with complete instructions and data for
shipment, installation, operation, maintenance, and the ordering of all parts for the
circuit breaker, disconnecting switch, earth switch, potential transformer, current
transformer, and all accessories. All books shall be identified by the contract and
item numbers and the serial numbers of all circuit breakers, disconnecting switches,
earth switches, potential transformers and current transformers to which the books
pertain. Where there is variation between the circuit breaker, disconnecting switch,
earth switch, potential transformer and current transformer supplied under these
specifications, complete information for each condition shall be provided.
This information may be included in a single set of books where feasible or separate
sets of books containing complete instructions and data shall be furnished covering
each variation. In all case, each set of books shall be furnished in quantities given in
Paragraph 2.6.2.3 above. The instruction books shall include but not be limited to
the following:
2.6.2.4.1. Complete instructions and data for ordering of all parts for the switchgear and
all accessories.
2.6.2.4.2. Drawing or cuts showing cross sections of the each component of the
switchgear and the operating mechanism.
2.6.2.4.3. Drawings or cuts showing assembly and cross sections of the circuit breaker
interrupting devices.
2.6.2.4.4. Complete instructions covering installation, assembly, including bolt torque
requirements, operating, maintenance and adjustment of the breaker
mechanism, operating mechanism, and interrupting devices. Cuts or drawings
shall be provided showing all points where adjustments may be made.
2.6.2.4.5. Complete information regarding any limits on frequency of operation without
overheating any components, or any other information affecting application of
the breaker.
2.6.2.4.6. Complete instructions for maintenance of breaker, disconnecting switch earth
switch, potential transformer and current transformer including any special
instructions required for disassembly and assembly of the breaker,
disconnecting switch and earth switch or its parts.
2.6.2.4.7. Detailed lubrication instructions including information on probable points of
wear and recommended service life between lubrications. These instructions
shall include a lubrication chart showing all points of lubrication and the type
of lubricant required. Types of oils used in dash pots, shock absorbers, or other
auxiliary devices, shall be given.
2.6.2.4.8. Complete instructions and information covering the operation, maintenance,
repair, and replacement of the energy storage system used with the circuit
breaker and disconnecting switch, including motor, compressor, recharging of
pressure reservoirs, moisture removal from air systems, and spring, cam, lever
and valve adjustments. Detailed drawings of each different air compressor and
hydraulic pump shall be furnished.
2.6.2.4.9. Complete hydraulic system or air system for operating mechanism and gas
system for circuit breaker. This information shall include the following
applicable pressures:
1. Compressor or pump start and stop setting.
2. Low pressures alarm.
3. Trip lock-out pressure.
4. Close lock-out pressure.
5. Low pressure lockout for re-closing relay.
2.6.2.4.10. Complete parts list, including a breakdown for all assemblies, or
subassemblies, including name or description, catalog number, quantity used
and reference by item number on included drawing. Where an assembly has
been quoted in the Schedule as spare parts, such assemblies shall be clearly
identified.
2.6.2.4.11. Spare parts and gasket list as recommended by the manufacturer, including the
descriptive information listed in Paragraph 2.6.2.4.10 above and in addition,
the current prices for such spare parts or gaskets.
2.6.2.4.12. One set of the curves and data for potential transformer furnished.
2.6.2.4.13. One set of the following curves and data for current transformer furnished:
(a) For Class C relaying current transformer, typical excitation current curves
for each required ratio showing excitation current and voltage applied to
the secondary terminals in accordance with ANSI Standard C57.13.
(b) Approximate resistance at 75 of the secondary windings, including leads
to the first available terminal block, and the number of turns on each tap.
(c) Mechanical and thermal short time current ratings.
2.6.2.4.14. Complete instruction and information covering the operation, maintenance and
replacement of the gas system. It shall also be included the characteristics of
the SF6 gas.
2.6.2.4.15. A complete set of finally approved drawings.
2.6.2.4.16. A list of the special tools being provided by the manufacturer.
2.6.2.4.17. Complete instructions and information covering the operation, repair and
maintenance of the gas filling equipment furnished.
2.6.2.5. Taiwan Power Company shall have the right to make copies of any instruction books,
drawings or data supplied by the Seller, provided such copies are for use only in the
construction, operation, or maintenance of facilities for Taiwan Power Company.
2.6.2.6. The actual scaled shipping weight of the heaviest piece shall be given in the
instruction books. In addition, the Seller shall advise Taiwan Power Company in
writing, of the actual scaled shipping weight of the heaviest piece at the time the
switchgear equipment are ready for delivery. This information is requested in order
that highway transportation of the proposed switchgear equipment by Taiwan Power
Company personnel may be facilitated.
2.7. Work to be done by Seller
2.7.1. The Seller shall design, manufacturer, and test the GIS all in accordance with these
specifications and contract documents.
2.7.2. Furnish all materials for installing the GIS except specified in Paragraph 2.8.
2.7.3. Furnish installation engineer to supervise the installation and commissioning of the GIS as
specified in Paragraph 8.
2.7.4. Transport the equipment to the place as specified.
2.8. Work to be done by Taiwan Power Company
2.8.1. Taiwan Power Company will furnish materials and services as follows.
2.8.1.1. Construct foundation for the GIS in accordance with the drawings and data supplied
by the Seller.
2.8.1.2. Furnish all labor and construction tools for the installation of the contract equipment
under supervision of the Seller’s installation engineer, except the special tools to be
supplied by the Seller.
2.8.1.3. Furnish all permanent electrical conduits and electrical connections external to the
local control cubicle of the GIS.
2.8.1.4. Painting equipment, if required, after installation is completed.
3. STANDARD AND SERVICE CONDITIONS
3.1. Standards
3.1.1. Performance and test of all circuit breaker, disconnecting switch, earth switch, potential
transformer and current transformer covered under these specifications shall conform in all
respects to the latest revision of ANSI Standards and NEMA Standards, except as modified
herein. Equipment meeting other authoritative standards which ensure an equal or higher
quality than the standards mentioned above will also be accepted. Bidders shall furnished
complete information and details concerning the standards to which equipment complies.
3.2. Service Conditions
The equipment shall be suitable for use under the following service conditions:
3.2.1. The equipment will be installed at an altitude below 1000 meters.
3.2.2. The maximum ambient temperature will not exceed 40 and the average ambient
temperature for any 24 hours period will not exceed 30 .
3.2.3. The maximum ambient temperature difference will be 15 within 24 hours and 25
within 30 days.
3.2.4. Exposure to the atmosphere with a maximum relative humidity 100 (annual average 85
) and salty atmosphere.
3.2.5. Frequent typhoons with 10 minutes average wind velocity of 40 meters per second and gust
wind velocity of 60 meters per second.
3.2.6. Severe earthquake shock of a maximum 0.3g accelerating force from horizontal directions.
Two (2) cycles of resonant sine wave due to earthquake shall also be considered.
3.2.7. Severe lightning stroke and frequent hot-line washing.
3.2.8. The neutral of 161 kV system is effectively grounded.
3.3. Drawings
3.3.1. Taipower Standard drawings, listed below, are attached and made a part of these
specifications.
3.3.1.1. TDS3-15-6093, dated 78-12-4
“161 kV Power Circuit Breaker Control Circuit with Single Shot Re-closing.”
3.3.1.2. TDS4-15-6036, dated Mar. 6, 1983
“Shed from of Bushing Shell.”
3.3.1.3. TDT-162-2027E, dated June. 14, 1988
“GIS Type Cable Termination for 69 kV & 161 kV XLPE Cable.”
3.3.1.4. TDT-162-2026D, dated July. 7, 1988
“GIS Type Cable Termination for 69 kV & 161 kV Oil-Filled Cable.”
3.3.1.5. The single-line diagram and preliminary layout drawing will be attached to the
“Invitation to Bid.”
4. DETAILED REQUIREMENTS
4.1. General
4.1.1. Type of Switchgear
4.1.1.1. The switchgear shall be of Sulfur Hex-fluoride (SF6) Gas Insulated Type, installed
indoors or outdoors as specified in Invitation to Bid.
4.1.1.2. Outdoor type GIS shall be totally waterproof.
4.1.2. Layout
4.1.2.1. The arrangement of GIS shall be in accordance with the single line diagram
specified in “Invitation to Bid.” The GIS shall be so designed and arranged for the
limited space as to give the possible minimum outside dimensions.
4.1.2.2. The primary components of the switchgear equipment such as bus bar, circuit
breaker, disconnecting switch, earth switch, potential transformer shall be enclosed
in the separately single-phase earth metal enclosure or in one three-phase common
earth metal enclosure.
4.1.2.3. The height from the base of supporting frame to the grounding potential part of
bushing shall not be less than 2.8 meters.
4.1.3. Insulation Level
4.1.3.1. Circuit breaker, disconnecting switch, potential transformer, current transformer and
outdoor bushing shall withstand the test voltage specified in their respective
paragraph.
4.1.3.2. Each component of the switchgear, including circuit breaker, disconnecting switch,
earth switch, potential transformer, bus bar, bushing enclosure and support insulator
shall withstand the following test voltage.
4.1.3.2.1. At normal operating gas pressure
(a) Low-frequency withstand voltage, one-minute, kV, rms 365
(b) Lightning impulse withstand voltage,
(1.2×50 s full wave), kV, crest 750
4.1.3.2.2. At gas pressure drops to atmospheric pressure
(a) Low-frequency withstand voltage, 3 sec, kV, rms 130
(b) Maximum system voltage, continuous, kV, rms
Line to ground 98
Line to line 169
4.1.3.3. Motor wiring, control wiring, potential transformer and current transformer
secondary shall withstand the following test voltage.
4.1.3.3.1. Motor wiring and control wiring withstand voltage,
one-minute, volts 1,500
4.1.3.3.2. Potential transformer and current transformer secondary
withstand voltage, one-minute, volts, rms 2,500
4.1.3.4. Clearance of live parts to earth, live parts to live parts and isolating clearances shall
be selected taking into consideration the insulation level of the switchgear specified
above and the pressure of the insulating gas.
4.1.4. Continuous Current Rating
4.1.4.1. The rated continuous current rating of all primary components shall be in accordance
with paragraphs specified and these rating shall be taking into consideration the
ambient temperature and limits of temperature rise specified.
4.1.5. Temperature Rise
4.1.5.1. With an ambient temperature of 40 the temperature rise of any component
contained in GIS at rated continuous current and rated frequency shall not exceed
the following values:
4.1.5.1.1. Bus runs without silver plated connector. 30
4.1.5.1.2. Bus runs with silver plated connector. 65
4.1.5.1.3. Silver plated power circuit breaker and switch contacts. 65
4.1.5.2. The total temperature of the parts to be handled by operator in
the normal course of his duty. 50
4.1.5.3. The total temperature of external surfaces accessible to an
operator in the normal course of his duty. 70
4.1.5.4. The insulation material used for the GIS shall be capable of withstanding the above
temperature rise limitations without any deterioration.
4.1.6. Enclosures of the Components
4.1.6.1. The enclosures of SF6 GIS shall be constructed from aluminum alloy, nonmagnetic
stainless steel or steel (if use steel, the adequate counter measure shall be provided to
avoid eddy current path due to magnetic field and to limit the temperature rise of the
enclosures less than the value specified in Paragraph 4.1.5, if necessary) and each
phase shall be divided into a number of components corresponding to the major
components of the switchgear, i.e. circuit breaker, bus bar, disconnecting switch,
earth switch, potential transformer and cable termination. The enclosure shall be
capable of withstanding the effects of an internal arc result from the specified
short-circuit current over a period of at least 0.3 sec. without any deterioration. The
supplier shall submit adequate proof (test certificate or laboratory test report).
4.1.6.2. The enclosures shall be gas tight and shall be provided with gas tight flange.
4.1.6.3. The enclosures and seal shall be designed to withstand the gas pressure encountered
under normal and short circuit conditions which the switchgear is subjected. To
avoid dangerous over-pressure build up in the enclosure due to an internal fault, a
pressure relief device shall be provided for each compartment, if necessary. Number,
location and pressure setting of the devices have to be indicated. The Bidder shall
also indicate the area (in mm2) through which the pressure can escape.
4.1.6.4. The enclosures shall be perfectly earthed. The method of earth shall be subjected to
approval.
4.1.7. Gas Leakage Detection
4.1.7.1. An effective gas leakage detection system shall be provided for each compartment
and connected to an alarm and lock-out control circuit. The system shall be
explained in the Bid.
4.1.8. Supporting Insulators
4.1.8.1. Reliable epoxy resin insulators shall be provided at the intersections between
enclosure compartments to support the live conductors and to act as gas tight
barriers between compartments.
4.1.8.2. The design of the insulator shall be such that it is possible to inspect, maintain or
pressurize each compartment individually without interfering with adjacent
compartments.
4.1.8.3. The design of the insulator shall be such that it can withstand all over pressures
building up in the compartment in case of an internal fault. No design will be
accepted which allows for the insulators to give way under overpressure, thus
communicating the overpressure to compartments not at fault.
4.1.9. Supporting Structure, Inspection Step and Platform
4.1.9.1. Rigid supporting structure shall be provided for the switchgear unless it is a
self-standing type.
4.1.9.2. The design of the supporting structure shall be such that must not interfere with
maintenance, transportation, assembly and disassembly.
4.1.9.3. Inspection steps shall also be provided so that a man can be permitted easy access to
the parts to be operated and maintained in service.
4.1.10. Bus Bars and Connectors
4.1.10.1. Conductors for the bus bar and the various connectors shall be of tubular copper or
aluminum and shall be of adequate dimensions to guarantee the continuous current
as shown in specified single line diagram and short circuit current ratings of the
circuit breakers.
4.1.10.2. The surfaces of the conductors shall have a smooth finish to prevent any electrical
discharges within the insulating SF6 gas. Electrical joints between bus bar sections
and between bus bar and other connectors shall be subjected to the approval.
4.1.10.3. The bus bars and connectors shall be mounted within a gas tight earthed metal
cylindrical enclosure which shall be filled with SF6 gas for insulation between live
parts and earth. A homogeneous uniform electric field be maintained within the
insulating gas. Supports shall be in the form of epoxy resin insulators as specified in
Paragraph 4.1.8.
4.1.11. Insulating Gas
4.1.11.1. SF6 gas required for the all GIS shall be furnished with switchgear. Moreover, gas
cylinder and SF6 gas in more than 10 of above required amount with necessary
connecting hose and fittings shall also be supplied for future maintenance.
4.1.11.2. SF6 gas shall conform in all respects to the latest revision of IEC Standard,
Publication 376.
4.1.12. Internal Fault
4.1.12.1. The internal fault of the SF6 GIS shall be limited to minimum and the design of the
enclosures shall be divided into a number of compartment to ensure the followings:
4.1.12.1.1. The flashover arc will not extend to the adjacent compartment.
4.1.12.1.2. In the case of enclosure damage, gas leakage will not interfere adjacent
compartment.
4.1.13. Expansion, Contraction, Vibration and Noise
4.1.13.1. The design of all component of the SF6 GIS shall take into consideration of its
expansion, contraction and vibration to ensure satisfactory operation under the
service conditions specified in Paragraph 3.2.
4.1.13.2. The impulse noise level shall not exceed 140 db at a horizontal distance of 1 meter
to the measurement point.
4.1.14. Local Control Cubicle
4.1.14.1. Each three-phase bay shall be furnished with a metal enclosed type local control
cubicle mounted adjacent to GIS. The following equipments shall be provided in the
cubicle for local and more remote control.
(a) Instruments and devices required for supervision control of GIS.
(b) Fault indicators for gas monitor.
(c) Local/remote select switch.
(d) Local control switch for circuit breaker.
(e) Position indicating lamps for circuit breaker.
(f) Local control switches with semaphore-type indicator showing the “ON” ”OFF”
positions for disconnecting switch and earth switch.
(g) De-Interlock key switch to cancel the interlock system between circuit breaker
and disconnecting switch and put to earth switch.
(h) Mimic diagram: Made of acrylic and the color shall be red for line and bus bar,
and yellow for earth bus.
(i) Circuit breakers for AC and DC power supply and heater.
(j) Receptacle rated AC 120V, 20 Amp.
(k) Space heater with humidity controller to maintain the internal relative humidity
of cubicle or housing below 60 .
(l) Terminal blocks for terminating all connecting wires from GIS to remote control
room.
(m)No-fuse breaker for DC control source of the major components such as CB, DS
and ES. Provisions shall be independent of any other circuit.
4.1.14.2. The cubicle shall have a hinged for door and shall be waterproof and dustproof.
Provisions shall be made for locking the cubicle door.
4.1.14.3. The cubicle floor shall have blank removable plate with sufficient room for conduits
to permit entrance of the TPC’s control circuits.
4.1.14.4. The wiring and piping materials among cubicle, the GIS and air compressor (if
offered) shall be furnished by Seller. The wiring materials between the local control
cubicle and the remote control room will be furnished by Taipower.
4.1.15. The wire colors of the low voltage wiring circuits shall be as the following:
4.1.15.1. The wire color of DC circuit shall be blue.
4.1.15.2. The wire color of AC 110V circuit shall be green.
4.1.15.3. The wire color of AC 220V circuit shall be orange.
4.1.16. Power Supply
4.1.16.1. Power for operation of motors, pumps, compressors and other auxiliary power
equipment will be supplied from a 220V volts, 3-phase, 60 Hz, 3-wire, delta
connected, station service system provided by Taipower.
4.1.16.2. Station storage battery, provided by Taipower, will be rated 125 volt d-c and
normally floated at about 140 volt, with occasional fluctuations between 100-145
volt.
4.2. Circuit Breaker
4.2.1. Type
4.2.1.1. The circuit breaker shall be SF6 gas single pressure type suitable for d-c trip and
automatic high speed re-closing service.
4.2.2. Ratings
4.2.2.1. Rated Frequency, Hertz 60
4.2.2.2. Voltage Ratings
4.2.2.2.1. Nominal voltage class, kV 161
4.2.2.2.2. Rated maximum voltage line to line, kV, rms 169
4.2.2.3. Current Ratings
4.2.2.3.1. Rated continuous current amperes, rms 4,000 or 2,000
as shown on
Single-Line Diagram
4.2.2.3.2. Rated short-circuit current at rated maximum
voltage, amperes, rms 50,000 40,000
4.2.2.3.3. 3-second short-time current carrying capability,
amperes, rms 50,000 40,000
4.2.2.3.4. Closing and latching capability, amperes, rms 80,000 64,000
4.2.2.3.5. Line charging current switching capability,
amperes, rms 90 90
4.2.2.4. Interrupting Ratings
4.2.2.4.1. Maximum symmetrical interrupting capability for standard duty cycle of
CO + 15 sec. + CO, amperes, rms 50,000 40,000
4.2.2.4.2. Maximum symmetrical interrupting capability for re-closing duty cycle of
O + Zero sec. + CO, amperes, rms 50,000 40,000
4.2.2.5. Rated Interrupting Time, cycle (Based on 60 Hertz) 3 3
4.2.2.6. Rated Permissible Tripping Time Delay, sec. 1 1
4.2.3. Circuit Breaker Capabilities
4.2.3.1. Each circuit breaker shall be capable of performing within the applicable rating and
operating characteristics limits established in accordance with ANSI Standards
C37.04 for two (2) standard operating duty cycles of close-open (CO) plus 15
seconds plus close-open (CO), each separated by at least 15 minutes. Each breaker
shall also be designed and constructed for automatic re-closing from remote device
at a duty cycle of open (O) plus 20 cycles plus close-open (CO) at rated interrupting
capability.
4.2.3.2. Each circuit breaker shall be capable of completely interrupting all phases of a 60 Hz,
three phase circuit when faulted by any type fault, from zero to 100 percent of rated
short-circuit current at rated maximum voltage or related required capability in three
(3) cycles, after which time there shall be no recurrence of main current flow. The
interrupting time for a three-phase close-open (CO) operation at the specified duty
shall not exceed the rated interrupting time by more than 1/2 cycles.
4.2.3.3. The breaker shall be capable of interrupting purely charging current of transmission
lines and the magnetizing current of transformer. For both of these duties, the time
required for interruption shall not exceed three (3) cycles. In the performance of
these duties, the breaker shall be re-strike free.
4.2.3.4. The breaker shall allow three-phase re-closing for all faults. Taiwan Power Company
will provide appropriate external relaying.
4.2.3.5. Any device required to function as a voltage limiter or to damp out oscillation or
re-strikes prior to complete interruption of the current shall have a life expectancy
not less than that of the rest of the circuit breaker as a whole.
4.2.4. Insulation Level
4.2.4.1. The circuit breaker shall withstand the following test voltage at the normal operation
gas pressure.
4.2.4.1.1. Low-frequency withstand voltage, dry, one-minute, kV, rms 365
4.2.4.1.2. Impulse withstand voltage, 1.2×50 s full wave, kV, crest 750
4.2.4.1.3. 2-microsecond chopped wave withstand voltage, kV, crest 968
4.2.4.1.4. 3-microsecond chopped wave withstand voltage, kV, crest 862
4.2.5. Operating Requirement and Control
4.2.5.1. Each circuit breaker shall be provided with all necessary mechanisms, fittings,
auxiliaries, with electrical, mechanical, pneumatic or hydraulic connections required
for the satisfactory operation of the breaker. The control circuit shall be in
accordance with Taipower Drawing No. TDS3-15-6093, Rev. a, dated 78-12-4.
4.2.5.2. Interlocks shall be provided to prevent hunting and other dangerous or undesirable
operations of the circuit breaker.
4.2.5.3. The control circuits shall be electrically trip free and spring, hydraulically or
pneumatically trip free and non-pumping, and shall be such that only momentary
actuation of a control device is necessary to obtain a complete operation. The
tripping control circuit shall be such that the TPC may, with the addition of suitable
relays and connection to the proper terminals, operate the breaker with three-phase
trip. The closing control circuit shall be suitable for three-pole single-shot adjustable
re-closing as specified in the Paragraph 4.2.3 CIRCUIT BREAKER CAPABILITIES.
All control coils shall be so rated that they will not overheat during five (5)
immediately successive close-open operations. The closing control circuit
components shall be so rated that they will not be damaged if the circuit is energized
for five minutes.
4.2.5.4. The total operating current of the tripping coils or closing coils, shall be less than 15
amperes at DC 125V.
4.2.5.5. The operating mechanism shall be suitable for three-phase, 20-cycle re-closing
(re-closing relays shall not be supplied), with a re-closing duty cycle of:
Open + 20 cycles + CO + 3 minutes + CO
4.2.5.6. Control Voltages
4.2.5.6.1. Closing control, d-c 125V
4.2.5.6.2. Tripping control, d-c 125V
4.2.5.6.3. Heater, a-c, 60 Hz, single phase 220V
4.2.5.6.4. Motor supply, a-c, 60 Hz., three-phase 220V
4.2.5.6.5. The circuit breaker shall be capable of opening and closing throughout the
appropriate control voltage ranges as follows:
Closing voltage range 90~140V
Tripping voltage range 70~140V
4.2.5.7. Two electrically independent tripping coils and all necessary circuits including
pressure switches and reset devices shall be provided, one for primary solid-state
protective relaying and the other one for conventional E/M protective relaying. Each
circuit shall be capable of operating normally with or without any voltage on the
other circuit.
4.2.5.8. The control circuit of breaker shall be automatically lock out and the breaker can not
be closed or open when the pressure of operating mechanism or SF6 gas in any or all
phases drops below the value necessary for operating the breaker.
4.2.5.9. Extra auxiliary switches shall be provided for each operating mechanism, in addition
to those normally required for breaker operation. Each switch shall be provided with
at least six (6) normally open and six (6) normally closed contacts. Switch contacts
shall have a voltage rating not less than 125 volts d-c and continuous current rating
not less than 15 amperes.
4.2.5.10. A manually operated tripping device shall be provided for each breaker. This device
shall be so located that it can be operated without opening the doors of the
mechanism housing and shall trip all three phases of the breaker. Operation of the
manual trip shall block the breaker’s close and re-close features units such a
capabilities are manually restored.
4.2.6. Construction
4.2.6.1. SF6 Gas Circuit Breakers
4.2.6.1.1. The circuit breakers shall be provided with a closed SF6 gas system for
insulation and for arc quenching. All chambers containing the SF6 gas shall be
hermetically sealed to prevent leakage of the gas to atmosphere.
4.2.6.1.2. Live parts shall be mounted within a gas tight and earth metal cylindrical
enclosure. SF6 gas shall be used as the insulation medium between live parts
and the earth cylinder. A homogeneous uniform electric field shall be
maintained within the insulation gas. Supports shall be epoxy resin insulators
complying with Paragraph 4.1.8.
4.2.6.1.3. Voltage distribution across the breaks of each circuit breaker pole shall be
controlled in accordance with Paragraph 4.2.6.2.
4.2.6.1.4. The operation of all the interrupters of a circuit breaker shall be simultaneous.
Suitable interlocks and other safety devices shall be provided to prevent
non-simultaneous or other undesirable operation.
4.2.6.2. Voltages Distribution Across Breaks
4.2.6.2.1. The total recovery and the transient recovery voltage across a pole of a circuit
breaker with multiple breaks shall be as evenly distributed across the breaks of
the pole as possible under all operating conditions. If necessary the circuit
breaker shall be provided with voltage grading capacitors, resistors or a
combination of capacitors and resistors connected in parallel with the breaks.
4.2.6.3. Contacts of Circuit Breaker
4.2.6.3.1. The contracts shall be designed to have adequate thermal and current-carrying
capacity for carrying full-rated current without exceeding the allowable
temperature rise as specified in Paragraph 4.1.5. They shall be designed to
have long life so that frequent replacement or maintenance will be unnecessary.
The surfaces of either or both, moving and stationary arcing contracts which
are exposed directly to the arc shall be forced with suitable arc resisting
material.
4.2.6.4. Operating Mechanisms:
The types of operating mechanisms used differ in the means used for obtaining the
power required to close a circuit breaker. The following general features apply to all
types.
4.2.6.4.1. The operating mechanism shall operate to open and close all three poles of the
breaker essentially simultaneously for three-phase operation. The mechanism
shall consist of a spring-operated, a pneumatically-operated or a
hydraulically-operated device mounted in a weatherproof, dustproof housing of
steel not less than 2.6 mm (No.12 US gauge). The housing shall have a
removable conduit plate or sufficient conduit knockouts for bring in conduit.
4.2.6.4.2. Access to the control or operation mechanism shall be through hinged doors of
the housing or cabinet. Provisions shall be made for locking the housing doors
with a padlock.
4.2.6.4.3. Each breaker shall close from the fully opened position when energized at
normal control voltage in not more then 20 cycles, on a 60 Hz. basis, from the
instant the control circuit is energized until the main contacts touch. This
requirement shall not apply in a re-closing cycle.
4.2.6.4.4. One or more heaters with humidity controller shall be supplied to maintain the
internal relative humidity of operating mechanism cubicles or housings below
60 . These heaters shall be installed in the lower portion of the cabinet with
electrical connections below the heaters to minimize deterioration of insulation
of supply wire. Heaters shall be encased in sheath having high electrical
insulating properties. The surface temperature of the heaters shall be restricted
to a value which will not shorten the life of the heater sheaths or other circuit
breaker components in the housing.
A separate two-pole, single-throw no-fuse breaker shall be provided for each
heater circuit. Heaters shall be suitable for continuous operation at 220 volts
a-c. The heater circuit shall be independent of any other circuit.
4.2.6.4.5. Each operating mechanism shall be designed for the duty cycle involved and
all working joints throughout shall be made of corrosion-resistant materials.
All bearings which require periodic greasing shall be provided with suitable
means of introducing the lubricant. Where periodic packing of the bearings is
recommended, the bearings shall be such as to facilitate disassembly prior to
packing. The mechanism shall be strong rigid, positive, quick in action, not
subject to rebound or to critical adjustment and shall be readily accessible for
maintenance. The design shall be such that five immediately successive
close-open operations will produce no overheating of electrical parts.
4.2.6.4.6. For purposes of inspection and adjustment means shall be provided for manual
closing and opening of the circuit breaker at a conveniently accessible place.
The maintenance closing and opening device shall be such that the contacts
can be operated slowly by one man to adjust the circuit breaker when it is not
in service.
4.2.6.4.7. Pneumatic Mechanism
4.2.6.4.7.1. If the GIS in installed outdoors, each circuit breaker’s pneumatic
closing mechanism (if furnished) shall be provided with its own
individual air compressor, air tank, necessary control, piping and
associated equipment (pressure gauge, safety valves, pressure switches,
etc.).
4.2.6.4.7.2. If the GIS is installed indoors, each set shall be provided with a central
air compressor plant, and each circuit breaker shall be provided with its
own operating mechanism with air tank and necessary control. The air
pipe and accessories required for air piping between compressor plant
and each circuit breaker shall be provided by seller.
The central air compressor plant shall consist of at least two (2) air
compressor units, air storage tanks, necessary control, piping, valves,
pressure gauge and pressure switch. The air tank may be located within
the enclosing housing or adjacent to it.
4.2.6.4.7.3. The air compressor shall have a compressor motor, 220 volts
alternating current three phase.
4.2.6.4.7.4. The air compressor and motor shall be of sufficient size to charge the
storage system from its minimum operating pressure to normal
operating pressure in 30 minutes for individual air compressor plant. If
central air compressor plant is supplied, the recharging time shall be
within one (1) hour after tripping operation of all circuit breakers
simultaneously or from the minimum operation pressure. It shall also
be capable of charging the storage system from atmospheric pressure to
normal pressure in 60 minutes for individual air compressor plant or 4
hours for central air compressor plant. The air compressor shall be
equipped with a suitable filter for dirt removal and an automatic control
to maintain normal operating pressure.
4.2.6.4.7.5. If individual air compressor plant is supplied, the air storage tank shall
be of sufficient size to permit closing the circuit breaker at least five (5)
times without compressor operation. If central air compressor plant is
supplied, each circuit breaker shall be provided with a sufficient size of
storage tank to permit three (3) close-open operations without
replenishment from central air tank. However, the air storage tank of
the central air compressor plant shall have capacity to permit two (2)
circuit breakers to perform additional two (2) close-open (CO)
operations without compressor operation. A manually operated valve
shall provide for draining condensed moisture and oil from the lowest
point of the air system. The air tank shall be equipped with a safety
relief valve set at approximately 20 percent above the normal operating
pressure. A low pressure alarm switch set at approximately 10 percent
above the minimum operating pressure and a low pressure lockout
switch to prevent the operation of mechanism shall be provided. These
features may be combined into one device.
4.2.6.4.7.6. Suitable means shall be provided between the air tank and mechanism
to prevent operation of the mechanism pneumatically when
maintenance work is being done. This should shut off the air supply
and may be arranged to exhaust the air from the mechanism.
4.2.6.4.8. Hydraulic Mechanism
4.2.6.4.8.1. Each circuit breaker’s hydraulic closing mechanism shall be provided
with its own individual pump, accumulators, necessary control, piping,
pressure gauge, pressure switches and valves.
4.2.6.4.8.2. The pump and associated motor shall be of sufficient size to charge the
accumulator from its minimum hydraulic operating pressure to normal
hydraulic operating pressure within five (5) minutes. The hydraulic
pump shall be equipped with an automatic control to maintain normal
hydraulic operating pressure. A manually operated hydraulic pump shall
be provided for charging the hydraulic pressure manually in case loss of
power supply.
4.2.6.4.8.3. The accumulator shall be of sufficient size to permit the circuit breaker
to perform an operating sequence Specified in Paragraph 4.2.5.5
without operation of the hydraulic pump. The hydraulic system shall be
equipped with a safety relief valve set at approximately 20 percent
above the normal hydraulic operating pressure.
4.2.6.4.8.4. An alarm pressure switch shall close when the hydraulic pressure drops
to a value approximately 10 percent above the minimum operating
pressure of the mechanism. A lockout pressure switch shall prevent the
mechanism from attempting a closing operation when the hydraulic
pressure is too low to complete the operation. (These functions may be
combined into one device.)
4.2.6.5. Spring Operated Mechanism
4.2.6.5.1. If spring operated mechanism is supplied, the spring shall be charged by a
motor. The motor and its control circuits shall be so constructed as to
automatically fully charge the closing spring within fifteen (15) seconds after
each closing operation so that the breaker can perform the re-closing duty cycle
specified. The spring compressing motor shall be rated three phase 220V, 60
Hertz. The motor and all necessary accessories for satisfactorily performing
this function shall be provided with the breaker, suitably mounted and
completely wired. Means shall be provided for charging and release the spring
manually. The control circuit shall include means to prevent damage to the
closing relays or other components of the control circuit in case of loss of the
power supply or failure of the spring rewinding function.
4.2.6.5.2. In case loss of power supply, the operating mechanism shall be capable of
performing the operation of open-close-open circuit breaker is in closed
position.
4.2.6.5.3. On stored-energy mechanism, a position indicator shall indicate the state of
energy in the storage device. The word “charged” in black print on a yellow
background shall be used; “discharged” in black print on a white background
may be used where applicable.
4.2.6.5.4. Suitable means shall be provided to prevent operating the mechanism when
maintenance work is being done.
4.2.7. Accessories
4.2.7.1. Each circuit breaker shall be furnish with all necessary accessories, but not be
limited to the following:
4.2.7.1.1. Position Indicator:
A semaphore signal and a pair of position indicating lamps (red and green) to
indicate the open and closed positions of each individual phase of the breaker
contacts shall be mounted in such position that it will plainly visible to a
person standing on the ground (for example on top of control cubicle). If the
semaphore is inside the control cubicle, it shall be readily visible through an
appropriate window. The indicating lamps shall be supplied from the 110 volt
a-c receptacle circuit. A mechanical position indicator shall also be provided in
the operating mechanism housing.
4.2.7.1.2. Operation Counter:
An operation counter shall be furnished to indicate the total number of
operations of the circuit breaker. The counter shall register on tripping
operation only, and shall remain in operative during the closing stroke of the
breaker.
4.2.7.1.3. Supply Switches:
Separate circuit breakers shall be provided in the control cubicle for
disconnection and protection of the convenience outlet circuits.
4.2.7.1.4. Other accessories in accordance with manufacturer’s standard.
4.3. Disconnecting Switch
4.3.1. General Requirement
4.3.1.1. Disconnecting switches shall be triple-pole, single throw, electrically or
pneumatically and manually operated type.
4.3.1.2. Disconnecting switches shall be provided for isolating of circuit breakers, current
and power circuits and they shall be locate electrically in accordance with the
“Single Line Diagram” as specified in “Invitation to Bid.”
4.3.1.3. The disconnecting switches shall be capable of making and breaking the transformer
magnetizing current, charging current, and bus loop current. Contacts parts of the
disconnecting switches shall be capable of switching loop current more than 100
times.
They shall be fully interlocked with the circuit breakers to ensure that they can only
be operated under no load. However, for double bus system, provision shall be made
for de-interlocking with the circuit breaker before changing the bus, so that while
one of bus bar disconnecting switches is closed, the another one will be able to open
satisfactorily without opening the circuit breaker.
4.3.2. Rating
4.3.2.1. Rated frequency, Hertz 60
4.3.2.2. Rated voltage, kV, rms (L line to line) 161
4.3.2.3. Rated current, amperes, rms
4.3.2.3.1. Continuous current 4,000 or 2,000
as shown on
Single-Line Diagram
4.3.2.3.2. Momentary current (Asy.) 80,000 64,000
4.3.2.3.3. 3-second current 50,000 40,000
4.3.3. Insulation Level
4.3.3.1. The disconnecting switches shall withstand the following test voltage at the normal
operation gas pressure.
4.3.3.1.1. Low-frequency withstand voltage, one-minute, kV, rms 365
4.3.3.1.2. Impulse withstand voltage, 1.2×50 s full wave, kV, crest 750
4.3.3.1.3. Low-frequency withstand voltage, across open gap,
one-minute, kV, rms 425
4.3.3.1.4. Impulse withstand voltage, across open gap, 1.2×50 s
full wave, kV, crest 825
4.3.4. Design of Disconnecting Switches
4.3.4.1. The GIS shall be provided with single or double break isolators incorporation
adequate isolating clearances to guarantee insulation level as specified in Paragraph
4.3.3 when the contacts are opened. The insulation medium between live parts and
earth between the opened contacts shall be SF6 gas.
4.3.4.2. All live metal parts shall be mounted in a gas-tight earthed non-magnetic metal
cylindrical enclosure, supported by conical epoxy resin insulators and insulated by
SF6 gas in a similar manner as Paragraph 4.1.8 and 4.2.6.1.2.
4.3.5. Operating Mechanisms of Disconnecting Switches
4.3.5.1. The disconnecting switches shall be operated electrically or pneumatically and
manually. They shall be fully interlocked with circuit breakers to ensure that they
can only be operated when the associated main circuit is not energized. For double
bus bar system, they shall be able to operate in accordance with the requirement
specified in Paragraph 4.3.1.3. The disconnecting switches shall also be fully
interlocked with earth switches to prevent from unauthorized operation.
4.3.5.2. Each three phase disconnecting switch shall be provided with its own motor, control
gear, facilities for connecting to a remote control panel and a local/remote control
selector and shall be rated a-c, 220V, 3-phase, 60 Hertz or d-c 125V.
4.3.5.3. Extra auxiliary switches shall be provided for each operating mechanism, in addition
to those normally required for disconnecting switch operation. Each switch shall be
provided with at least six (6) normally open and six (6) normally closed contacts.
Switch contacts shall have a voltage rating not less than 125 volts d-c and a
continuous current rating not less than 15 amperes.
4.3.5.4. The position indicator to indicate the open and closed positions of the disconnecting
switch shall be furnished. A pair of indicating lamps shall also be provided on local
control cubicle.
4.3.5.5. The operating mechanism shall be enclosed in a water and dust proof metal housing.
Space heater with humidity controller shall be provided to maintain the internal
relative humidity of housing below 60 .
4.4. Earth Switches
4.4.1. The earth switches shall be located on both sides of each circuit breaker and on each end of
the circuit as shown on the “Single Line Diagram” specified in “Invitation to Bid.”
4.4.2. All earth switches shall be electrically or pneumatically and manually operated. The earth
switches on line side shall be high speed making proof type with a making capability equal
to circuit breaker closing capability.
4.4.3. The operating mechanism shall be enclosed in waterproof and dustproof metal housing. A
mechanical position indicator and space heater with humidity controller to maintain the
internal relative humidity below 60 shall be provided in the housing.
4.4.4. The earth switches shall be fully interlocked with the associated circuit breakers and
disconnecting switches to prevent from earth the live parts.
4.4.5. Extra auxiliary switches shall be provided for each operating mechanism, in addition to
those normally required for earth switch operation. Each switch shall be provided with at
least six (6) normally open and six (6) normally closed contacts. Switch contacts shall have
a voltage rating not less than 125 volts d-c and continuous current rating not less than 15
amperes.
4.4.6. The grounding potential parts of the earth switches shall be connected to the earth terminals
fitted to the outside of the enclosure through suitable insulators which are insulated from the
enclosure for the measurement of insulating resistance or contact resistance of the circuit
breaker or disconnecting switch unit.
4.5. Potential Transformer
4.5.1. Type
4.5.1.1. The potential transformers shall be the electromagnetic type.
4.5.2. Ratings
4.5.2.1. Rated frequency, Hertz 60
4.5.2.2. Voltage rating:
Primary line to line voltage, kV 161
Primary line to ground voltage, kV 93
Secondary X winding, volts 115~66.4
Secondary Y winding, volts 115~66.4
Secondary Z winding, volts 66.4
4.5.2.3. The total number of secondary windings: 2 or 3
as shown on
Single-Line Diagram
4.5.2.4. Burden rating:
Total burden rating, VA 200 or 400
as shown on
Single-Line Diagram
4.5.2.5. Accuracy class:
ANSI 0.3 accuracy class for Y and Z winding, 1.2 accuracy class for X windings.
4.5.3. Connections
As shown on Single-Line Diagram.
4.5.4. Insulation Level
4.5.4.1. Primary, low-frequency withstand voltage, one-minute, kV, rms 365
4.5.4.2. Primary, impulse withstand voltage,
(1.2 50 microsecond full wave), kV, crest 750
4.5.4.3. Secondary, withstand voltage, one-minute, volts, rms 2,500
4.5.5. Temperature Rise
4.5.5.1. The limits of observable temperature rise in potential transformers and hottest-spot
conductor when tested in accordance with their ratings shall be as following:
Ambient
Temperature
Winding
Temperature Rise
Hottest-Spot
Winding Temperature Rise
30 55 65
55 30 40
4.5.6. Design and Construction
4.5.6.1. Single phase units shall be provided for each switchgear phase and shall be
accommodated in metal enclosures with SF6 gas insulation. The potential
transformer compartments shall be fully segregated from other primary
compartments of the switchgear by means of epoxy resin insulators as specified in
Paragraph 4.1.8.
4.5.6.2. All secondary leads of potential transformers shall be brought out and connected to
the local control cubicle. All connections within the cubicle shall be made with
solder-less connectors on suitable terminal blocks. Sufficient terminals shall be
provided to permit three-phase connection and brought out to remote control room.
4.5.6.3. The neutral of each single-phase potential transformer shall be brought out through a
10 kV neutral bushing and connected to the earth terminal fitted to the outside of the
enclosure.
4.6. Current Transformer
4.6.1. Type
4.6.1.1. Current transformers shall be the bushing type mounted outside or inside the metal
enclosure.
4.6.2. Ratings
4.6.2.1. Rated frequency, Hertz 60
4.6.2.2. Current transformation ratio, amp.: 4000-3000-2500-1500-500/5 or
2000-1500-1200-800-500/5
as shown on
Single-Line Diagram.
4.6.2.3. The total number of CT secondary cores for each phase: 4
4.6.2.4. Accuracy class: One of the secondary cores
shall be ANSI accuracy class
0.3B-0.9 for metering, and the
others shall be C800 for relaying.
4.6.3. Insulation Level
4.6.3.1. Secondary, withstand voltage, one-minute, volts, rms 2,500
4.6.4. Temperature Rise
4.6.4.1. The limits of observable temperature rise in current transformers and hottest-spot
conductor when tested in accordance with their ratings shall be as followings:
Ambient
Temperature
Winding
Temperature Rise
Hottest-Spot
Winding Temperature Rise
30 55 65
55 30 40
4.6.5. Design and Construction
4.6.5.1. Current transformers shall be mounted outside or inside the metal enclosure. Full
insulation between the primary conductor and current transformer core and
secondary parts shall be provided by the SF6 gas and epoxy resin supports. The
current transformer mounted outside shall be protected by metal cover.
4.6.5.2. Current transformers shall be of the multi-core design to suit the requirements as
specified in Paragraph 4.6.2 and the cores shall be made of cold-rolled
grain-oriented steel or nickel-iron alloy.
4.6.5.3. Ratio changing of current transformers shall be possible by means of taps on the
secondary windings.
4.6.5.4. All secondary and tap leads of each current transformer shall be brought out and
connected to the local control cubicle. All connections within the cubicle shall be
made with solder-less connectors on suitable short circuiting type terminal blocks.
Sufficient terminal shall be provided to permit and brought out to remote control
room.
4.7. Outdoor Bushing and Line Terminal (If required)
4.7.1. All bushings shall be SF6 gas filled or oil impregnated paper insulated type and in
accordance with ANSI Standard electrical characteristics. The construction of bushing shall
be of one piece integrally fused porcelain type, and the color shall be chocolate brown. If
bushing shall is made of multi-piece the joint shall be made of ceramic and glazed. Joint
made by resin or gasket will not be considered.
4.7.2. Bushing shall have an adequate water shed petticoat. The water-drip sheds shall have the
following dimensions.
(a) The ratio of the shed pitch to the shed projection shall not be less than 0.9.
(b) Interval of the water-drip sheds: 700-1000 mm.
(c) Projection of the water-drip shed over normal shed shall be not less than 30 mm.
(d) The detailed construction of shed form shall be in accordance with the attached drawing
No. TDS4-15-6036, dated Mar. 6, 1983.
4.7.3. All electrical and dimensional characteristics are shall be as follows:
4.7.3.1. Rated voltage class, kV, rms 161
4.7.3.2. Rated continuous current, amp., rms 4000 or 2000
as shown on
Single-Line Diagram.
4.7.3.3. Low-frequency withstand voltage, kV, rms
(a) 1 minute, dry 365
(b) 10 second, wet 315
4.7.3.4. Impulse withstand voltage, 1.2×50 s full wave, kV, crest 750
4.7.3.5. Impulse withstand voltage, chopped wave, kV, crest
(a) 3 microsecond 862
(b) 2 microsecond 968
4.7.3.6. Minimum creepage distance, mm As specified in
“Invitation to Bid”
4.7.4. Each bushing shall be provided with a 6-hole (for 4000A) or 4-hole (for 2000A) line
terminal pad drilled in accordance with NEMA Standard CC-1. The line terminal pads shall
be made of copper or high-conductivity copper or aluminum alloy. All contact surfaces shall
be completely and uniformly tinned with commercially pure tin.
4.7.5. Bushing shall meet the applicable test requirements as specified in Paragraph 6 “TYPE
TESTS AND ROUTINE TESTS.”
4.7.6. Each bushing shall be so designed that there will be no undue stressing of any parts due to
temperature changes, with adequate means provided to accommodate the expansion or
deflection of conductor and current-carrying parts resulting from overload or transient
conditions.
4.7.7. All portions of an assembled bushing, other than gaskets, which may in any way be exposed
to be atmosphere, shall be composed of completely non-hygroscopic material such as metal
or glazed porcelain.
4.8. Cable Termination
4.8.1. If the outgoings of GIS are connected with power cable, the type and size of cable will be
shown on the attached “Single-Line Diagram.” The power cables and cable terminations
will be provided by others. The connectors shield rings, cable housing, mounting plated and
accessories required for the installation of cable termination shall be provided by GIS
manufacturer. Details as attached drawings.
4.9. Terminal Blocks
4.9.1. All terminal blocks shall be of the screw type. Blocks which depend upon the spring return
of deformed metal to secure terminal leads are not acceptable. All current transformer
terminal blocks shall have shorting provisions of the positive-contact type with all parts
provided with the terminal blocks. Short-circuiting the terminals of any one current
transformer shall not short-circuit the terminals of any other current transformer. All
terminals for external connection by the TPC shall accommodate 5.5 mm2 stranded wire or
large where necessitated by current requirement.
4.10. Nameplate
4.10.1. Nameplate for circuit breaker, disconnecting switch, earth switch, potential transformer,
current transformer and operating mechanism legible from the ground, shall be installed on
each equipment. Nameplate shall be made of stainless steel and giving complete
information and rating as specified in ANSI Standard C37.04 and C37.30.
5. ACCESSORY EQUIPMENT
5.1. Blind Cover
5.1.1. The blind covers for each end shall be furnished. The covers will be used for blinding the
compartment during maintenance works.
5.2. Gas Filling Cart
5.2.1. One set of gas filling cart including cylinder, pressure reducing valve, monometer, adapter
and filling hose shall be furnished for filling SF6 gas. One end of the filling hose shall be
suitable for connection with DILO coupling tongue part No.VK/F-02/20.
The construction of gas filling cart shall be in accordance with the attached drawing No.
TDS4-15-6061A, dated Nov. 3, 1987 “Gas Filling Cart”.
5.3. Special Tools
5.3.1. One complete set of special tools and gauge necessary for erection and maintenance of the
GIS shall be furnished. The set of tools shall be provided with a steel cabinet suitable for
wall mounting and incorporated with locking facilities. A list of these special tools shall be
attached to the Bid.
6. TESTS AND REPORTS
6.1. The tests shall be done in accordance with the applicable standards of ANSI and NEMA. The Type
tests and Routine tests shall be tested at the manufacturer’s plant or at a suitable test site, by and at
the expense of the Seller. The test schedule, including the date, site and test item, shall be
submitted to Taipower and the authorized Inspector within 2 months in advance. The testing
method, wiring circuit and testing equipments for each test item shall also be clearly described in
the test schedule. The tests shall include the following.
6.2. Type Test (Design Test)
Type test shall be made the following tests on at least one circuit breaker, disconnecting switch,
earth switch, potential transformer, current transformer, bus bar, and outdoor bushing. If the same
design, insulation class and rating of the equipment to be supplied have been previously
manufactured, type test of these previously produced equipment will be acceptable. The test data
shall be complete and shall clearly state the performance data of tests.
6.2.1. No-load mechanical operation life test:
Circuit breaker, disconnecting switch, earth switch.
6.2.2. Short-time current carrying capability test:
Circuit breaker, bus bar, disconnecting switch, earth switch, current transformer, outdoor
bushing.
6.2.3. Closing and latching capability test:
Circuit breaker, making proof type earth switch.
6.2.4. Interrupting test (including normal current switching test, short-circuit current switching test
and short line fault test according to IEC Standard):
Circuit breaker.
6.2.5. Re-closing duty test:
Circuit breaker.
6.2.6. Temperature rise test:
Circuit breaker, bus bar, disconnecting switch, potential transformer, current transformer,
outdoor bushing.
6.2.7. Impulse withstand voltage test:
Circuit breaker, bus bar, disconnecting switch, potential transformer, outdoor bushing.
6.2.8. Low-frequency withstand voltage test:
Circuit breaker, bus bar, disconnecting switch, potential transformer, current transformer,
outdoor bushing.
6.2.9. Partial discharge test:
Circuit breaker, bus bar, disconnecting switch, potential transformer, outdoor bushing.
6.2.10. Withstanding voltage at zero SF6 gas pressure:
Complete set of GIS.
6.2.11. Various test of potential transformer and current transformers in accordance with ANSI and
NEMA Standard.
6.2.12. Stored energy system tests:
Circuit breaker.
6.2.13. Noise level test as specified in NEMA SG-4:
Circuit breaker, disconnecting switch, earth switch.
6.2.14. Cantilever test:
Outdoor bushing.
6.3. Routing Tests
Each partial assemblies of the component or the complete switchgear shall be subjected to the
following tests:
6.3.1. Mechanical operation test:
Circuit breaker, disconnecting switch, earth switch.
6.3.2. Timing test:
Circuit breaker, disconnecting switch.
6.3.3. Low-frequency withstand voltage test:
Circuit breaker, bus bar, disconnecting switch, potential transformer, current transformer,
outdoor bushing.
6.3.4. Partial discharge test:
Complete set of GIS.
6.3.5. Gas leakage test:
Circuit breaker, bus bar, disconnecting switch, earth switch, potential transformer, outdoor
bushing.
6.3.6. Contact resistance measurement test:
Circuit breaker, bus bar, disconnecting switch, earth switch.
6.3.7. Various test of potential transformer and current transformer in accordance with ANSI and
NEMA Standard.
6.3.8. Control wiring check:
Circuit breaker, disconnecting device, earth switch.
6.4. Field Tests
The following tests will be performed on complete assembled switchgear at site prior to putting
into service.
6.4.1. Mechanical operation test:
Circuit breaker, disconnecting switch, earth switch.
6.4.2. Timing test:
Circuit breaker, disconnecting switch.
6.4.3. Gas leakage test.
6.4.4. Gas analysis test.
6.4.5. Interlock test:
Circuit breaker, disconnecting switch, earth switch.
6.4.6. Contact resistance measurement test:
Circuit breaker, bus bar, disconnecting switch, earth switch.
6.4.7. Applied voltage test:
Total assembled switchgear.
The manufacturer shall furnish AC high voltage testing facilities and testing engineer for
carrying out HV test at site after erection of GIS free of charge.
Means shall be provided for dielectric test on switchgear assembly and power cable after
erection at site. Provision shall also be made for installation test bushing and for
disconnecting the cable termination from switchgear, so that they can be tested separately.
The test voltage shall be according to IEC Standard 517.
6.4.8. Partial discharge test.
6.5. If any item of equipment fails to pass any of the above tests, it shall be repaired and defective parts
replaced or redesigned, and the equipment shall then be retested without additional cost. All
additional items of equipment of the same type and rating being furnished shall conform in all
respects with the item of equipment which passed the above tests.
6.6. In the event any equipment as actually built and being furnished on this contract includes
important modifications of or significant departure from the designs on which certified design test
data have been accepted, shows evidence of failure to comply with the requirements of these
specifications, the Taiwan Power Company reserves the right to require the performance of such
tests specified herein as may be necessary to demonstrate that the equipment meets the
requirements of these specification. Such tests to be made no additional cost.
6.7. Test Reports
The Seller shall furnish twelve (12) copies of suitable bound certified test reports within thirty (30)
days after completion of the tests and they are subject to Taipower’s approval.
7. INSPECTION
7.1. All material and workmanship shall be subject to inspection, to the extent practical by an
Authorized Inspector at any time during the manufacture, assembly and testing of material or
equipment to be furnished under these specifications.
7.2. The manufacturer shall afford, without charge, all necessary and reasonable facilities required by
the Inspector for the performance of inspection required.
7.3. The Inspector shall have full access to all fabricating or manufacturing plants at all reasonable
times, to inspect all materials and fabrication as well as witness all tests.
7.4. No material or equipment shall be shipped before it has been cleared in writing by the Inspector
and the material or equipment so marked.
7.5. At time of award TPC may elect, in lieu of independent inspection, to accept “Manufacturer’s
Certificate” showing compliance to the contract specifications for the material or equipment
furnished. This certificate shall be in the nature of a signed, notarized statement or the
manufacturer, certifying that the material or equipment conforms to the contract specifications,
listing such test results as are required to be performed by the contract. “Manufacturer’s
Certificate” shall be furnished in the English or Chinese language in twelve (12) copies prior to
shipment of the material or equipment.
7.6. The acceptance of Manufacturer’s Certificate or acceptance of equipment by TPC’s Authorized
Inspector shall in no way relieve the Seller of his responsibility for furnishing material or parts
thereof according to the requirements of these specifications. Any warranties or guaranties
concerning workmanship or material on this equipment shall be in full force even though the
equipment has been accepted by the Inspector.
7.7. Independent inspection of all equipment shall be required. This inspection shall be conducted in
accordance with the provisions detailed in the Appendix I “Class B Inspection Service
Requirement” by the authorized Inspector.
8. SUPERVISION OF INSTALLATION
8.1. Taiwan Power Company (Taipower) will require the seller to furnish one or more installation
engineers to supervise and be directly responsible for the installation and operation of all GIS until
tests and adjustments are completed.
8.2. Bidder shall furnish a quotation for the supervision services which will be compared together with
the Bid. The quotation shall state the cost of travel and supervisory fee separately. Supervisory fee
shall be quoted based on the man-day rated and the estimated continuous working man-days
excluding duration of travel. The total supervisory cost including travel cost shall be subject to the
gross business receipts tax law of Taiwan, Republic of China.
8.3. The cost of travel shall include round trip air fare and all other ground travel costs from the
engineers residence to the Taiwan location and return plus incidental en-route subsistence
expenses.
8.4. Vehicles for local transportation in Taiwan shall be made available to the engineers for the work.
If such transportation is not available, the cost of which shall be reimbursable to the engineers.
Cost of local air, sail or other transportation for the engineers when performing supervision
services in Taiwan under this contract shall be paid or reimbursed by Taipower.
8.5. Living allowance shall be included in the supervision fee.
8.6. Should the supervision services be interrupted, either by Taipower’s grounds or “Force Majeure,”
for a considerable long period, Taipower may request installation engineers for repatriation.
Excessive cost of return travel will be paid by Taipower at the rate quoted by the Seller.
8.7. If the actual working man-days exceed that estimated by the Seller due to Taipower’s grounds or
“Force Majeure,” the increased supervisory fee shall be paid by Taipower at the rate specified:
Taipower shall not be required to pay for unauthorized absence and absence due to illness or
hospitalization.
8.8. Payment of total amount of supervisory fee and travel cost shall be made on actual working
man-days and numbers of return travel.
8.9. The supervision engineers shall be able to speak fluent English or Chinese. Taipower will notify
the Seller in writing at his official address or local agent a reasonable time in advance of the date
on which. Taipower desires such personnel to report for work. The work week shall be on a
forty-eight (48) hour basis, Monday through Saturday inclusive. If overtime work exceeding 8
hours per day or work on Sunday/National holiday the special rate as listed on Appendix II will be
applied.
8.10. Payment of supervisory fee and travel cost after tax shall be made in NT Dollar irrevocable L/C to
be paid against presentation of Taipower Certificate of acceptance and Seller’s invoice after
completion of services.
8.11. The installation engineer will be directly responsible for seeing that the equipment involved by
installed in accordance with the manufacturer’s recommendation and he will further be
responsible for finding and detecting defective parts, as well as pursuing the necessary corrective
measures.
8.12. The type of materials and methods used in the installation shall be as those recommended or
approved by the inspection engineer. The responsibility of the installation engineer shall apply
from such time as he arrives at the installation and shall further apply whenever installation is in
progress, whether or not he is at the installation, so long as he has been informed that the normal
inspection is starting or continuing.
8.13. Any cost incurred by the Taiwan Power Company due to over-sight or negligence of the
installation engineer shall be the responsibility of the Seller up to the time of energization.
8.14. At the completion of the energization, the Seller will be required to furnish the Taiwan Power
Company a written report, based on the installation engineer’s report to his company, outlining the
complete installation as well as any unusual conditions or special instructions.
9. SPARE PARTS
9.1. One lot of spare parts for at least five years operations, as recommended by the manufacturer shall
be quoted.
9.2. The total price for the recommended spare parts will not be included in the evaluation price. The
itemized prices for the spare parts shall be quoted separately. However, Taiwan Power Company
reserves the right to adjust the quantity of spare parts to be purchased at contract award.
10. WEIGHT LIMITATION AND TRANSPROT RESTRICTIONS
10.1. The heaviest package to be handled during transport of the equipment shall not exceed 30 metric
tons. The dimensions of the largest package shall not exceed 6.4 meters in length, 2.4 meters in
width, 3.5 meters in height.
11. PACKING AND SHIPPING
11.1. All equipment shall be suitably prepared for ocean shipment through the tropics and in a manner
that affords the necessary protection against atmospheric conditions.
11.2. All packing enclosures shall be such that slings for handling may be readily attached during
transport. Where it is unsafe to attach slings to boxes and crates, boxes and crated parts shall be
packed with slings attached to the contents. The slings shall project through the box or crate so
that other lifting attachments can be readily made.
11.3. All projecting parts shall be removed, wherever possible, and shipped separately. Where removal
is not possible, they shall be provided wherever necessary with protective steel plates of boxes.
11.4. Porcelain bushings shall be individually packed and properly supported for ocean shipment.
11.5. All boxes containing liable to corrode in a high humidity, tropical saline atmosphere shall be
double lined with suitable weather proof packing with ample supply of dehydrating agent enclosed
in such boxes to prevent condensation.
11.6. Before the equipment is dispatched from the manufacturer’s premises, the components shall be
stamped in at least two places with distinguishing marks corresponding to marks shown on
installation drawings. Components to be fitted adjacent to each other shall be so stamped to ensure
that they can be identified and correctly fitted on site.
11.7. All packages shall have at least one copy of packing list in English, enclosed, showing content.
11.8. Three copies of shipping documents, non-negotiable Bill of Lading (B/L), etc., shall be sent to
Taipower directly Via Air Mail immediately after shipment.
APPENDIX I: CLASS B INSPECTION SERVICE REQUIREMENT
The service by Inspector for “Class B” inspection shall include:
(1) Review of factory tests
Inspector shall review result of factory tests carried out by the manufacturer during manufacture to
determine whether the requirements and stipulations of specification have been complied with. If
deemed necessary Inspector may order extra tests or make special inspections to check manufacturer
data. Serious failures or non compliance with specifications with would affect delivery of equipment
shall be reported immediately to allow proper remedial measures to taken.
(2) Completion inspection and test
Inspector shall make completion inspection of all equipment prior to painting and shall witness a
final test on the completed equipment to ensure that the quality and performance of the equipment be
in compliance with the requirements and standards specified in the contract. Whenever possible the
final test shall be a test run of the equipment under different simulated working conditions. When he
is satisfied with the inspection and test, he shall make a written inspection approval to permit the
manufacturer to proceed with painting and packing.
(3) Packing
Inspector shall check the packing list against the contract. The packing of the equipment for
shipment shall be such that no damage will occur during transportation from the manufacturer’s
factories to the place of installation in Taiwan. Inspector shall inspect the packing prior to the
issuance of a certificate of inspection. Should his inspection reveal this packing to be inferior or
likely to be the cause of unreasonable risks as to damage in handling and transportation, Inspector
shall cause improvement in packing to be made and shall issue a certificate of inspection only after a
new inspection shows that the packing in entirely satisfactory. Inspector shall also see that the
markings on cases or package are in accordance with the contract requirement.
(4) Certificate of Inspection
A certificate of inspection shall be issued by Inspector when he is satisfied that equipment and
materials for which Inspector is required to render technical services has passed Inspection.
Addendum No.1 Dated Jan. 1998
TO
Specification for 161 kV Gas Insulated Switchgear Equipment
Taipower Specification No.GIS-1 Date: May, 1995
1-1 SCOPE
1-1.1 This addendum covers changes and additions to be made in Taipower Specification No.
GIS-1 to modify the general requirements and detailed dimensions of Cable Termination
in accordance with IEC-859.
1-1.2 All other paragraphs of specification No. GIS-1 not mentioned in this addendum remain
unchanged.
1-1.3 Paragraph numbers used below are the ones in the original specification or shall be added
to the original specification.
1-2 AMENDMENT
1-2.1 The drawings “GIS Type Cable Termination for 69 kV & 161 kV XLPE Cable” & “GIS
Type Cable Termination for 69 kV & 161 kV XLPE Oil-Filled Cable” list in Table of
Contents and Paragraph 3.3.1.3 & 3.3.1.4 are changed as follow:
TSCD-162-3035, IEC Pub. 859, 1986 “Typical Cable Connection Assembly For
Gas-insulating Metal-enclosed Switchgear For Rated Voltage of 72.5 kV And Above.”
1-2.2 Paragraph 4.8.1 changed to read:
If the outgoing of GIS are connected with power cables, the cable size will be shown on
the attached “Single-Line Diagram.” The power cables and cable termination will be
provided by others. The connector shield rings, cable housing, mounting plated and
accessories required for the installation of cable termination shall be provided by GIS
manufacturer. Cable housings shall be designed in accordance with the attached cable
terminal drawings. The height of the base plate of cable housing measured from the floor
of GIS room shall not be less than 1.4M.
APPENDIX II: PRICE SCHEDULE
The Bidder shall quote firm FOB price for the following items:
(1) 161kV SF6 gas insulated switchgear equipment as per attached single line diagram.
Price, US$ Item Description Q’ty
Unit Total
a Line Bay with Cable Housing
b Line Bay with Outdoor Bushing
c Transformer Bay
d Static Capacitor Bay
e Bus tie Bay
f Three-Phase Set of Bus potential
Transformer
g Central Compressor Plant, If Offered
h Arrester
Total 1 (one) set (US$)
(2) Independent inspection fee (if required) US$
(3) Supervision fee:
a. Total estimated working days. US$
b. Man-day rate. US$
c. Overtime or holiday man-hour rate. US$
d. Traveling cost. US$
(4) Spare parts:
The total price will be included for price comparison. Taiwan Power Company reserves the right to
adjust the quantity of spare parts to be purchased at contract award.
a. One (1) complete single phase set of bushing (if required). US$
b. One (1) complete three phase set of interrupter unit including contacts and
accessories required for the interrupter. Detailed construction drawing to
show each component of the interrupter unit shall be attached. US$
c. One (1) complete three phase sets of moving and stationary contacts for
circuit breaker. US$
d. One (1) complete three phase sets of moving and stationary contacts for
disconnecting switch. US$
e. One (1) complete three phase sets of closing and tripping coils for
circuit breaker. US$
f. One (1) complete three phase sets of closing and opening coils for
disconnecting switch. US$
g. One (1) complete three phase sets of closing and opening coils for earth switch. US$
h. One (1) complete three phase sets of closing auxiliary relay (52X) and
anti-pumping relay (52Y) for circuit breaker. US$
i. One (1) complete three phase set of insulating rod for circuit breaker. US$
j. Three (3) complete three phase sets of gasket. US$
k. Two (2) sets of compression motor for pneumatic operating mechanism. If
hydraulic operating mechanism is offered, pump with driving motor shall be
furnished. US$
l. Three (3) sets of suction valve for pneumatic operating mechanism. If
hydraulic operating mechanism is offered, main valve should be furnished. US$
m. Three (3) sets of piston ring for air compressor. US$
n. Three (3) sets of filter for air compressor. US$
o. Three (3) sets of SF6 gas density relay. US$
(5) Special tools:
The total price shall also be included for price comparison.
a. One (1) set of gas filling cart as specified in Paragraph 5.2. US$
b. One (1) complete set of special tools required for installation and maintenance. US$
(6) The unit price for the test bushing shall be quoted for reference but it will not be included for price
comparison. Test bushing shall include accessories required for high voltage test at site. Name of
manufacturer, drawing and technical specification of the test bushing shall be attached to the Bid.
APPENDIX II: PRICE SCHEDULE
The Bidder shall quote firm FOB price for the following items:
(1) 161kV SF6 gas insulated switchgear equipment as per attached single line diagram.
Price, NT$ Item Description Q’ty
Unit Total
a Line Bay with Cable Housing
b Line Bay with Outdoor Bushing
c Transformer Bay
d Static Capacitor Bay
e Bus tie Bay
f Three-Phase Set of Bus potential
Transformer
g Central Compressor Plant, If Offered
h Arrester
Total 1 (one) set (US$)
(2) Independent inspection fee (if required) NT$
(3) Supervision fee:
a. Total estimated working days. NT$
b. Man-day rate. NT$
c. Overtime or holiday man-hour rate. NT$
d. Traveling cost. NT$
(4) Spare parts:
The total price will be included for price comparison. Taiwan Power Company reserves the right to
adjust the quantity of spare parts to be purchased at contract award.
a. One (1) complete single phase set of bushing (if required). NT$
b. One (1) complete three phase set of interrupter unit including contacts and
accessories required for the interrupter. Detailed construction drawing to show
each component of the interrupter unit shall be attached. NT$
c. One (1) complete three phase sets of moving and stationary contacts for circuit
breaker. NT$
d. One (1) complete three phase sets of moving and stationary contacts for
disconnecting switch. NT$
e. One (1) complete three phase sets of closing and tripping coils for circuit
breaker. NT$
f. One (1) complete three phase sets of closing and opening coils for
disconnecting switch. NT$
g. One (1) complete three phase sets of closing and opening coils for earth switch. NT$
h. One (1) complete three phase sets of closing auxiliary relay (52X) and
anti-pumping relay (52Y) for circuit breaker. NT$
i. One (1) complete three phase set of insulating rod for circuit breaker. NT$
j. Three (3) complete three phase sets of gasket. NT$
k. Two (2) sets of compression motor for pneumatic operating mechanism. If
hydraulic operating mechanism is offered, pump with driving motor shall be
furnished. NT$
l. Three (3) sets of suction valve for pneumatic operating mechanism. If
hydraulic operating mechanism is offered, main valve should be furnished. NT$
m. Three (3) sets of piston ring for air compressor. NT$
n. Three (3) sets of filter for air compressor. NT$
o. Three (3) sets of SF6 gas density relay. NT$
(5) Special tools:
The total price shall also be included for price comparison.
a. One (1) set of gas filling cart as specified in Paragraph 5.2. NT$
b. One (1) complete set of special tools required for installation and maintenance. NT$
(6) The unit price for the test bushing shall be quoted for reference but it will not be included for price
comparison. Test bushing shall include accessories required for high voltage test at site. Name of
manufacturer, drawing and technical specification of the test bushing shall be attached to the Bid.
7-1
(GIS GCS GCB GIL) 104 4
1
1.1 69kV
1.2
1.3 161kV 69kV (PCH1) (TB01)
( ) (TB0A)
2
2.1
2.1.1
2.1.2
2.2
2.2.1
2.2.2
2.3
2.3.1
2.3.2
2.3.3
2.3.4 73 100
2.4
2.4.1 SF6 IEC
2.4.2
2.4.3
7-2
2.4.4 (GIL)
IEC
2.4.5 (GCS)
2.4.6 (GCB) H
2.4.7 (GCB) 2.2.2.2.4. (r.m.s.)
2.4.8
110V
220V
2.4.9
2.4.10 AC 110V AC220V
AC 110V
2.4.11 TDS3-15-60001(69kV) TDS3-15-60003(161kV)
TDS2-15-60005(345kV)
2.4.12 0.33G 0.22G
0.5G( ) 0.3G( )
O
2.4.13 69kV ( ) (HVD)
2.4.14 (SPACER)
2.4.15 60
2.4.16 ( 200 VA 75VA) (0.3 1.2)
(1 2 3) ( )
345kV 75VA
345kV/ 3 (115-66.4)V
161kV 200VA 75VA
161kV/ 3 (115-66.4)V
69kV 200VA 75VA
69kV/ 3 (115-66.4)V
2.4.17 69kV GIS
7-3
2.4.18
2.4.19 Kgf/cm2 Mpa
2.4.20 ANSI
( ) 161kV 50kA 2000A
GIS/GCS/GCB 3000/5A
(ANSI ) C800 2000/5A (ANSI )
0.3B-0.9
2.4.21 69kV (GCB) 1200A C400
2000A C800
2.4.22 GIS 13 ( PT )
4 13 8 5%
2.4.23 161kV 50kA GIS TDS4-15-65010
2.4.24
2.4.25 161kV ( GIS) 161kV 80MVAR 160A
2.4.26 161kV GIS 2.2.2.2.31~33 :
2.2.2.2.31 Reactor bank switching capability,
a. Reactor bank breaking current, A ________
b. Guaranteed number of switching reactor without requiring
maintenance. _______
2.2.2.2.32 Maximum cable-charging breaking current, A _______
2.2.2.2.33 Does the CB integrate a parallel TRV-Shaping Capacitor?
__________(Yes or No).
If yes, what is its capacitance? _________ , f.
2.4.27 161kV GCB 2.2.2.1.33~34 :
2.2.2.1.33 Reactor bank switching capability,
a. Reactor bank breaking current, A ________
b. Guaranteed number of switching reactor without requiring
maintenance. _______
2.2.2.1.34 Maximum cable-charging breaking current, A _______
2.4.28 345kV ( GIS) 345kV 100MVAR 355A
2.4.29 345kV GIS/GCB 2.3.2.31~32
2.3.2.31 Reactor bank switching capability,
a. Reactor bank breaking current, A ________
7-4
b. Guaranteed number of switching reactor without requiring
maintenance. _______
2.3.2.32 Maximum cable-charging breaking current, A _______
2.4.30
2.4.30.1 (345kV GCS/GCB 161kV GCS/GCB) Munsell No.5G
3/2 ( GIS) Munsell N7.0 69kV GCB/GCS
Munsell No.10BG 4/2 Munsell
No.5G 3/2
2.4.30.2 (LCC) / CNS 1244
(Z06 )
2.4.30.3 ( 85% )
2.4.30.4 (LCC) (
) 40 m
120 m CNS
10756-1 10757 8886
(1 ) (300
) (300 ) (500 )
2.4.30.5
2.4.31 GIS
2.4.32 ( ) 161kV GIS CB
(TRV-Shaping Capacitor) BPT
(ATP/EMTP ) BPT 161kV GIS
BPT
2.4.33 (TDT-162-2026D, 2027E) IEC-60859(TSCD-162-3035) (
PCH1) IEC
1.4M
2.4.34 TB0A
2.4.35
2.4.36 ( )
GIS ( )
7-5
2.4.37 GIS/GCS/GCB
2.4.38 GIB/GIL
2.4.39 69/161kV GIS IEC-61128
2.4.40 GIS/GCS/GCB/GIL SF6 0.5%
2.4.41 GIS/GCS/GCB/GIL SF6
2.4.42 345kV GIL (gas compartment) 20
12
2.4.43 345kV GIS GCS GIL
2.4.44 GIS A1 1 5
7.5R 5/14
SF6 5Y 8.5/4
10YR 8/14
2.5G 4/10
10B 7/8
SF6
2.4.45 (Gas Filling Cart)
One set of gas filling cart including cylinder, pressure reducing
valve, monometer, adapter and filling hose shall be furnished for
filling SF6 gas.The construction of gas filling cart shall be in
accordance with the attached drawing No. TDS4-15-6061A, dated Nov.
suitable for connection with DILO coupling tongue part No.VK/F-
02/20 or equivalents.
2.4.46 69/161/345kV GIS SF6 5%
2.4.47 69/161/345kV GIS GCB GCS LCC LCC
2.4.48 GIS/GCS/GCB/GIL (
)
2.5
2.5.1
7-6
2.5.2
2.5.3
2.5.4
2.5.5 (GIS) (GCB/GCS)
GIL
2.5.6 (
)
2.5.7 CT PT
2.5.8 GIS CT PT CT
2.5.9 B
2.5.10
2.5.11 345kV GIL (POST) AC
1 10 ( 1
1 1 ) (PT)
GIL
2.6 ( )
2.6.1
( )
2.6.2
2.6.3
2.6.4
7-7
2.6.5
2.6.6
2.6.7
2.7 ( )
2.8
2.8.1
2.8.2
2.8.3 7.5m 2.5m 3.9m 30