INSTRUCTION AND MAINTENANCE MANUAL 취급설명서osemco.com/files/download.html?file=%2Fhome%2Fhost%2... · 취급설명서 본 제품을 사용하시기 전에 “사용설명서”를

INSTRUCTION AND MAINTENANCE MANUAL

IMPORTANT NOTE :Before using these AIR CIRCUIT BREAKERS.

Please read these instructions manual carefully, and make sure that all actual users also read them.

O-Sung Electric Machinery Co., Ltd.

취 급 설 명 서

본 제품을 사용하시기 전에 “사용설명서”를 숙지하십시오.이 설명서는 최종 사용자까지 보내 주십시오.

(Safety in work)- (Safety Precaution)

- (Safety in Work Operations)

(Service Conditions)(Description)

(Specification)(Unpacking)

(Keeping & Carrying)(Auxiliaries)

- (Manual Charging)

- (Electric Charging)

- (Charging & ON-OFF Indicator)

(Operation of Drawout Mechanism)- (Drawin Method)

- (Drawout Method)

- (Drawout Position Indicator)

(Replacement)

- (How to Disassemble the Breaker)

- (How to Assemble the Breaker)

- (Relay and the Contact Holder)

- (Replacement of Motor)

(Wiring Diagram)- (SB Breaker Connection)

- (Inspection Prior to Applying Current)

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-

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4

121618202122

24

26

30

34

C O N T E N T S

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Safety Precaution

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Qualified Person

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Safety Precaution

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Dangerous Procedures

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Safety in work operations

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Do not install in areas subject to high temperature, high humidity, dust, corrosive gas, vibrations, shocks.

To do so may result in malfunction or fire.

Should the ACB trip automatically, always clear the source of the malfunction before closing the ACB again.

Failure to do so may result in fire.

Terminal screws should be tightened periodically. Failure to do so may result in fire.

Use the ACB in 50/60Hz. Failure to do so may result in malfunction or fire.

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Safety in work operations !

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1. Normal service conditionsIf under ordinary conditions the following normal working conditions are all satisfied, the OSEMCO series air circuit breaker may be used unless otherwise specified.1) Ambient air temperature

A range of max. +40 to min. -5 is recommended.however, the average over 24 hours must not exceed +35

2) Altitude2,000m or less.

3) Environmental conditionsThe air must be clean, and the relative humidity 85% or less at a max. of +40Do not use and store in atmospheres with sulfide gas, ammonia gas etc.(H2S 0.01ppm, SO2 0.01ppm, NH3 a few ppm.)

4) Installation conditionsWhen installing the OSEMCO SB series air circuit breaker, refer to the installation instructions in the catalogue and instruction manual.

5) Storage temperatureA range of max. +60 to min. -20 is recommended.however, the average over 24 hours must not exceed +35

6) Replacement Approx. 10 years.Please see maintenance and inspection for further detail.

2. Special service conditions In the case of special service condition, modified air circuit breakers are available.Please specify when ordering. Service life may be shorter depend on service conditions.1) Special environmental conditions

If it is used at high temperature and/or high humidity, the insulation durability and other electrical/mechanical features may deteriorate. Therefore, the breaker should be specially treated. Moisture fungus treatment with increased corrosion-resistance is recommended.Since some parts may pose problems due to corrosion in the environments wherecorrosive gas results from the corrosion, the increased extra-corrosion proofspecifications is recommended.

2) Special ambient temperatureIf the ambient temperature exceeds +40 , the uninterrupted current rating will bereduced. Since the reduction value is different depending on the applicable standardrefer to table A

3) Special altitudeIf it is used at the 2,000m or higher the heat radiation rate is reduced decreasing theoperating voltage rating, continuous current capacity and breaking capacity.Moreover the durability of the insulation is also decreased owing to the atmosphericpressure. For further details, Please contact OSEMCO.

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Less than100

Less than100

Table A) Derated Current as per ambient temperature

ACB.

Line Side Insulation Clearance

When switchgear will be designed, it should be maintained the line side insulation clearance betweenOSEMCO ACB and panel such as below illustration.

NOTEA Mechanical Interlock,

.

The dimension A should be increasedwhen mechanical interlock will be fitted.

Top Plate, Electrical Equipment

Side Plate, Electrical Equipment

A A

B

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Circuit Breaker

Cradle

Trip buttonClose button

Arcextinguishing

chamber

Front cover

Digital protectionrelay

Spring charge indicatorOn/Off indicator

Drawout lever

Drawout rail

Drawout positionindicatorDrawout handle

Drawout type

Description

Rear cover

Fixed contacts

Power-side busbar

Movable contacts A’ssy

Load-side busbar

Main closing spring(

Charging mechanism

Arc extinguishing chamber

Auto Connector

Button Cover

Name Plate

Charging Handle

Auxiliary Rail

Automatic Trip

Lifting Hook Hole

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Characteristics

Rated operating voltage VAC

Insulation voltage VAC

Number of poles

Frame current AF

Rated current A

Neutral current A

Breaking capacity

Rated breaking capacity

(kA R.M.S symmetrical)

Rated breaking capacity

(kA peak value)

Breaking duty

(O-CO-CO)

IEC

947-2

VDE

0660

BS

4752

220 / 240V

380 / 415V

440 / 500V

600 / 660V

480V

690V

Below 500V

600 / 660VMaking capacity (kA, peak)

Short timewithstand capacityAC 500V

Operation time

Number ofoperatingcycles

Maximumweight(kg)

Total breaking time

Rated closing time

With rated current

Without rated current

Fixed

3P 4P

3P 4P

Drawout

1Sec

3Sec

690

1000

3P / 4P

630

630

630

690

1000

3P / 4P

800

800

800

690

1000

3P / 4P

1000

1000

1000

690

1000

3P / 4P

1250

1250

1250

SB-606 SB-608 SB-610 SB-612

S

65

65

50

50

50

42

105

105

50

H

85

85

65

65

65

50

143

143

65

S

65

65

50

50

50

42

105

105

50

H

85

85

65

65

65

50

143

143

65

S

65

65

50

50

50

42

105

105

50

H

85

85

65

65

65

50

143

143

65

S

65

65

50

50

50

42

105

105

50

H

85

85

65

65

65

50

143

143

65

30

40ms

80ms

30 30 30

5,000

20,000

65(85)

35(48)

5,000

20,000

65(85)

35(48)

5,000

20,000

65(85)

35(48)

5,000

20,000

71(86)

44(54)

S : General model H : High interrupting capacity model

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690

1000

3P / 4P

1600

1600

1600

690

1000

3P / 4P

2000

2000

2000

690

1000

3P / 4P

2500

2500

2500

690

1000

3P / 4P

3200

3200

2500

690

1000

3P / 4P

4000

4000

2500

690

1000

3P / 4P

5000

5000

2500

690

1000

3P / 4P

6300

6300

3200

S

85

65

50

50

50

42

105

105

50

H

100

85

65

65

65

50

143

143

65

S

85

65

65

65

65

42

143

105

65

H

100

85

85

65

85

50

187

143

85

S

85

65

65

65

65

42

143

105

65

H

100

85

85

85

85

50

187

143

85

S

85

85

65

65

65

42

143

105

65

H

100

100

85

85

85

50

187

143

85

S

100

100

85

85

65

50

187

143

85

H

130

130

100

100

85

65

220

187

100

S

100

100

85

85

65

50

187

143

85

H

130

130

100

100

85

65

220

187

100

S

100

100

85

85

65

50

187

143

85

H

130

130

100

100

85

65

220

187

100

50 65 65 65 85 85 85

40ms

80ms

5,000

20,000

71(86)

44(54)

5,000

20,000

90(105)

48(63)

5,000

20,000

90(105)

48(63)

5,000

20,000

120(135)

55(70)

3,000

10,000

185(200)

100(115)

3,000

10,000

200(215)

120(135)

3,000

10,000

240(260)

140(155)

SB-616 SB-620 SB-625 SB-632 SB-640 SB-650 SB-663

Before unpacking the breaker, check that all boxes and packages are in sound condition.While unpacking, Check that the breaker is in sound condition.Check that the information given on the rating and accessory nameplate and that on the purchase order agree.

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If ACB will not be installed immediately after taking-over, Please keep in proper conditions as follows.Be sure to keep the ACB in the Off and Discharge position.Store the ACB in a dust free and dry environment, without corrosive gas. Note that particularly the compound of water and cement may cause corrosion on many parts.Place the ACB on a horizontal plane in normal state, not putting it directly on the ground.

.A) B)

Use a hauling rope for carrying as shown in the picture or a lift when carrying the breaker.A) In case of using a hauling ropeB) In case of using a lift

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Manual Charging ( Charge) Position Indicator( )

7-8

CHARGE .

The closing spring is charged by manual charging handle, When charginghandle will be pulled forward 7-8 times, closing will be completelycharged.

. PUSH ON DISCHARGED ON

. PUSH OFF OFF .

When breaker will be ready for closing, charging indicator will showCHARGED. When pressing on-button, breaker will be closed andcharging indicator will show DISCHARGED and on-off indicator will showon-position.When pressing off-button, breaker will be tripped and on -offindicator will show off-position.

Motor Charging ( Charge)

B1, B4 .

.

When rated voltage will be supplied to terminals of B1 and B4, chargingmotor will be operate and closing spring will be charged. When chargingwill be completed, charging indicator will show CHARGED and chargingmotor operation will be automatically completed.

C1, C2.

O1, O2 .

After completion of charging coil, breaker will be closed. When ratedvoltage will be supplied to terminals of C1 and C2, And also chargingmotor will be operated and closing spring will be charged. When ratedvoltage will be supplied to terminals of O1 and O2, tripping relay will beoperated and breaker will be tripped. The repeated closing and trippingcan be available.

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Position Indicator( )

OFF-DISCHARGED OFF-CHARGED

B

CHARGED

Breaker is tripped and closing spring is discharged.

CHARGED

Breaker is tripped and closing spring is charged. Ready for closing.

A

ON-DISCHARGED ON-CHARGED

D

CHARGED

Breaker is closed and closing spring is discharged.

CHARGED

Breaker is closed and closing spring is charged.

C

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(Draw-in Method)Trip Button open .

.DISCONNECTED

.

.

.

Push the trip button and make the breaker off. Release the extension rail lock lever and pull drawout lever to arrow-marked direction.Check that the cradle position indicator shows DISCONNECTED.Place the breaker on the rail and push slowly until it does not move.Insert the drawout handle into its aperature and turn the drawout handle until breaker is completely inserted to cradle.Then, indicator will show CONNECTED.

(Draw-out Method)Trip Button open .

.

DISCONNECTED .DISCONNECTED

.

Push the Trip button and make the breaker off. Pull extension rail lock lever upward.Insert the drawout handle into its aperature and turn counter-clockwise until position indicator shows DISCONNECTED.When breaker is latched again on disconnected position, breaker can be completely drawnout by lifting of drawout lever once more.

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3 .

Monunted on cardle, this device indicates the position of connected, test & disconnected asfollows.

Normal operation

Test position

Drawout position

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1) + 6mm . 2) .3) 8mm .4) 4 8mm .

1) Remove 6mm screws from arc chamber with + driver and take it away.2) Trip the breaker and remove snap rings from the connector link connected to input shaft, then remove link pins.3) Take all 8mm bolts at back cover away by using a box wrench, and then remove each back covers, which are

separated by each phase.4) When 8mm bolts are removed out of 4 places at the front control panel, the control panel will be easily taken

away.

Follow the following procedure for disassembling:

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Assembly should be done in the reverse sequence of disassembly as follows:

1) 50Nm .2) .3) 50Nm .4) 6mm .

1) Assemble a operating device in the breaker mold, tightening with 50Nm.2) Fit the link pin of the contact holder and fasten the snap ring.3) Trip the operating part of the breaker and fasten the rear back covers sequentially, tightening the bolts

with 50Nm.4) Insert Arc extinguishing chamber sequentially and fit square nuts in the bottom part, tightening with

6mm screws symmetrically.

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1) When screws of fixing bracket for coils will be removed, each coils can be separated. After separation of leadwire for power supply, individual checking & replacement can be easily performed. When disassembling the coil, Make sure the correct identification of tripping coil, closing coil, and under voltage coil. The mis-location of coils may cause malfunction.

2) The contact case can be easily separated when 6mm bolts at the bottom of the output side busbar bracket will be removed with a box wrench as shown in the above illustration.

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When dismantling the motor1) Remove 4 ( ) fixing bolts for ACB cover. Then, cover can be separated.2) Disconnect the wires (B1, B4) connected to the motor from terminal board or auto connector.

(Be careful against electric shock.)3) After disconnecting the wires (B1, B4), remove 1 screw( ) supporting the motor to separate the motor.

When inserting the motor1) Align the axis of charging mechanism with a groove of the motor and then insert the motor.

(If it doesn’t fit well, insert it by turning the handle manually little by little.)2) After inserting the motor, fix the motor by using 1 screw ( ) supporting the motor.3) Connect the wires (B1, B4) connected to the motor with terminal board or auto connector.

(Be careful against electric shock.)4) Fix the cover by using 4 screw ( ) that fix the ACB cover. then, the motor replacement will be completed.

Notes 1) When fitting the charging motor for manual type ACB, closing coil should be installed together.2) Closing coil is located in front of tripping coil. Each coil is fixed with 1 screw.3) Connect the wires (C1, C2) from closing coil to terminal board or auto connector. ��

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. ( )

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The breaker connector numbers are connected as follows :(The numbers are commonly applied for fixed & drawout type.)

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Aux normal “b” contact

Aux normal “a” contact

Normal “b” contact of OCR

Normal “b” contact of GR

Before connecting the terminal, check the terminal numbers. Wrong connection may cause the damage to breaker.

As for the DC control source, Be sure to check the polarity before connection.

Input power for charging motor

Input power for closing coil

Input power for tripping coil

Input power for digital protection relayFor Drawout Type

For Fixed Type

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Connected DisconnectedControl Source Trip Close

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AT : Reset ButtonBPO : Trip Push ButtonBPF : Closing Push ButtonCE : Connected Position Contact(c-contact)M : MotorXF : Closing ReleaseOT : OCR, GR Trip ContactUT : UVR Trip ContactMX : Tripping ReleaseU1,U2 : MN, MNR Control Source

CD : Contacts for disconnected position(c-contact)MN : UVR (Instantaneous Type)MNR : UVR (Time-delay Type)C : 4a ContactO : 4b ContactSDE1 : OCR Trip Indication Contact (a-contact)SDE2 : GR Trip Indication Contact (a-contact)CH : Motor Limit Switch (c-contact)M1, M2 : OCR, GR, UVR & OVR Control Source

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The above circuit diagram shows de-energized status.1) When UVR is not fitted, the dotted line will be connected

as actual line.2) Either internal CT or external ZCT is selectively used.

Do not energize to terminal K and L

Connected DisconnectedControl Source Trip Close

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N

Between the live parts of the main circuit and earth

Between the live parts of different poles

Between the power supply and the load terminals

Between the load parts of the main circuit and the live part of the control/operation circuits

Between the live part of the control/operation circuit and earth

busbar?

Are the electrical wires and bus bars fastened securely to the external line connection main terminal ?

, . ?

Are any conductive foreign objects, such as screws, nail, processing chips from the panel and also connecting lead wires for the withstand voltage tests, left around the terminals ?

, ?Is the front cover, base, etc. cracked or damaged ?

, ? Has the breaker been flooded or is there condensation of dew ?

500V Measure the insulation resistance with a 500V insulation resistance tester.

Perform the withstand voltage test

1. Inspection Prior to Applying CurrentACB , Perform the following inspections after installing the ACB and before applying the current

(Inspection item) (Criteria)

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1.1 Standards for Insulation Resistance and Withstand Voltage Tests

:5 (ACB :100 )Insulation Resistance Test : Must be no less than 5 (must be no less than 100 for the ACB alone)

Withstand Voltage Test(1min)

Measurement Location Test Voltage

(M12 screw : 400~500kg-cm, 40~50N.m)Must be tightened at the designated tightening torque

Must be removed completely.

There must be no cracks or damage.

, .There must be no flooding or dew condensation.

1.1Must comply with the standards given in 1.1

1.1Must comply with the standards given in 1.1

2,500V

2,500V

2,500V

2,500V

2,000V

ACB . Replace the ACB if there is any

detrimental discoloration.

. Put methyl1 alcohol on a cloth, etcand wipe.

, Cradle.

Replace the cradle if there are anyabnormalities.

, ACB.

Remove dust and clean ACB or replace.

There must be no detrimentaldiscoloration

. There must be no detrimentaldeposits of dust or soot.

. There must be no discoloration of thejunction or deformation of the flat spring

5 (ACB : 100 ). Must be no less than 5(No less than 100 for the ACB alone)

Visual inspection

Visual inspection

Visual inspection

1.1. Perform in

accordance withsection 1.1

Discoloration of the movingand fixed conductors

Soiling of the main circuitconductors

. Discoloration and deformationof the main circuit junction

Measurement of insulationresistance

Inspection MethodInspection item Criteria Treatment Method

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ACB 1.

It is recommended that periodic inspections are performed once about one month commencing useand thereafter according to the guidelines for inspection and renewal to ensure a stable, long-term useof the ACB.

2.1 External Appearance of the ACB

2.2 Conductive Part of the Main Circuit

Air

Blow with air upon each periodicinspection or clean and remove the dustwith a dry cloth

.Retighten if necessary

.Replace the product if flooding orimmersion has occurred.

Retighten if necessary

.There must be no detrimental deposits of dust and dirt.

Tightening torque M12 screw :400~500kg-cm (40~50N.m)

. There must be no flooding or immersion

Must be tightened securely.

Visual inspection

Tightening with torquewrench.

Tighten with a screwdriver.

Dust and soiling

Loosening of the maincircuit terminals

Flooding immersion inwater

Loosening of thecontrol terminals


2. Periodic Inspection

2.3 Arc Arc Extinguishing Chamber

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2.4 Switching Mechanism Part


3. Inspections After a Breaking operation

ACB , ., ACB

. .

Inspection the items detailed for periodic when the ACB has performed a breaking operation as a result of an overloadcurrent or a short-circuit current. Reuse a possible if the relevant criteria are satisfied. However, it is recommended that the ACB be replaced as soon as possible after it has interrupted a large fault current. The ACB should be monitored for unusual temperature rises and other abnormalities until replacement occurs.

1.

Please contact our company if closingcannot be performed even aftercompleting the primary treatment.

UVT UVT.

Refer to the section Abnormalities ofthe UVT if there is an abnormality ofthe UVT.

Charge.

Please contact our company if chargingcannot be performed manually.Refer to the section Chargingdisabled if electrical charging is notpossible.

Key-Lock

Release the Key-lock Device.

DISCONNECTED , TESTCONNECTED

Setting

Set to either of the DISCONNECTED , TEST

or the CONNECTEDpositions.

UVT

Apply voltage to the UVT.

Charge.

Charge.

1.

The closing operation cannot be performed.

Key-Lock .

The Key-lock device is not released.

The drawout position is not appropriate.

UVT.

Voltage is not applied to the UVT.

Spring charge .

The closing spring is not charge.

1. Cannot close

Probable CauseType & condition of Abnormality

1Primary Treatment

2Secondary Treatment

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4. Fault Diagnosis

Treatment

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Closing Coil

Replace the Closing Coil if there are noabnormalities in the contact of thefasten terminals

1.

If the voltage is not applied, examine the control circuit.

2.

If the voltage is applied, check the contact of the fasten terminal at the lower part of the control circuit terminal block

1. ,

If the voltage is not applied, examine the control circuit

Closing Coil ( )

The closing coil does notoperate. (Manual closing isable)

2. The closing operation is performed.

Trip(Off)

Tripping(Off) is performed simultaneously with theclosing operation.

1. SHT(MX). ( OFF

.)

The SHT(MX) will notoperate.(Manual OFFoperation is able)

1.Cannot close

2.OFFOff disabled


1Primary Treatment


Treatment

, , , motor

Secure the contact if there is anabnormality Replace the motor unit if there are no abnormalities

, motor unit, ,

.

Replace the motor unit if there are noabnormalities. Please contact ourcompany if there is an abnormality

Apply the voltage

1. MotorThe motor won't turn.

B1, B4 ,

Check the contact of the fastening terminals, B1, B4 below the control circuit terminal block. check the polarity also.

2. Motor charge

The motor turns but won't charge.

charge

Examine whether manual charging is possible.

1. Charge.

Electrical charging cannot be performed.

The voltage is not applied

The voltage is applied

3.ChargeCharging disabled


1Primary Treatment


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Treatment

, ACB

Replace the ACB if discoloration of theconductor or burning of the terminalmolding is noted

Cradle

Replace the cradle

ACB

Replace the ACB

Retighten

Decrease the current flow

1.

The fastening of the connecting conductor is loose

2.

The contact pressure is reduced

3.

The wear of the contact is severe

4. Current flow is large

4.

Unusual temperature rise


1Primary Treatment


Treatment

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Examine the power supply circuit if thevoltage is not applied

UVT Coil UVT Coil

Replace the UVT coil if there is nocontinuity

,

Replace the auxiliary switch if there are no abnormalities

Please contact OSEMCO

Check the input voltage

UVT Coil

Check the continuity of the UVT coil

Check the contact of the automatic connection terminal

1.

Voltage is not applied to the input terminals

2. UVT Coil

The UVT coil is disconnected.

1. Connector

The connector is disconnected

2.

(ACB )

Breakage of the operating parts of the auxiliary switch(ACB main unit)

5.UVT

The UVT will not draw in

6.

The auxiliary switch will not operate

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1Primary Treatment


Treatment

Head Office & Factory : 111-3, Youngtae-Ri, Woollong-Myun, Paju-CityKyungki-Do, KoreaTel : (82-31)944-3521/3 Fax : (82-31)944-3525http ://www.osemco.comE-mail :[email protected]

O -Sung Elect r ic Machinery CO., LTD.

Tel : (82-31)944-3521/3 Fax : (82-31)944-3525Tel : (82-2)332-6151 Fax : (82-2)332-6152http ://www.osemco.comE-mail :[email protected]

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INSTRUCTION AND MAINTENANCE MANUAL 취급설명서osemco.com/files/download.html?file=%2Fhome%2Fhost%2... · 취급설명서 본 제품을 사용하시기 전에 “사용설명서”를