Pid nov 2011-electrical_updated

Vaibhav Group, India Nov 2011 Release

Reach us: [email protected] Visit us: www.vaibhavgroup.com

[2011]

Design & Developed By:

Vaibhav Group of Companies

www.vaibhavgroup.com

Vaibhav Group – Projects and Products



Table of Contents Introduction .................................................................................................................................. 3

Recent Projects / Supplies ............................................................................................................. 3

Products: ....................................................................................................................................... 6

1. Transformers ......................................................................................................................... 6

1.1. Distribution Transformers .............................................................................................. 6

1.2. Power Transformers ....................................................................................................... 6

2. HT Switchgear ........................................................................................................................ 7

3. LT Switchgear......................................................................................................................... 9

4. Switchyard Equipments........................................................................................................ 10

4.1. Tn Line Towers ............................................................................................................. 10

4.2. Isolator ......................................................................................................................... 11

4.3. Dropout fuse ................................................................................................................ 12

4.4. Lightening Arrester ....................................................................................................... 13

4.5. Neutral Grounding Resistors......................................................................................... 14

4.6. GSS Switchyard Structure ............................................................................................. 15

5. Cable ................................................................................................................................... 16

6. ACSR/AAC Conductor ........................................................................................................... 17

7. Insulators ............................................................................................................................. 18

Clients ......................................................................................................................................... 19



Introduction

Vaibhav Group of Co. is involved in the supply, installation, testing and commissioning of all the

major items related to Electrical Substations, Switchyards, Transmission / Distribution system,

Automation and Scada among other necessary items.

Vaibhav Structurals is an ISO 9001:2008 certified company and almost all our vendors also have

similar quality standard certifications.

All the material manufactured and supplied by us are tested and certified by many 3rd party

laboratories across India.

Recent Projects / Supplies

Some of our most recent projects where we supplied the above products are as below:

1. Electrical and Instrumentation and Control work

River Water System at Chhabra Thermal Power Plant

On the banks of River Parvathi and River Bentli, situated is the place called Chhabra in the

Dist. of Baran at Rajasthan. Rajasthan Vidyut Utpadan Nigam is setting up a 2 x 750 MW

Thermal Power Plant.

Scope:

Vaibhav Structurals is responsible for the electrical work at the thermal plant. This is an LSTK

contract, where Vaibhav Structurals is responsible for supply, erection, testing and

commissioning of the following:

a. Power Transformers

b. Distribution Transformers

c. Conductor

d. LT and HT Switchgears

e. Battery and Battery Charger

f. Cable and Conductor

g. Steel Structure

h. PLC / SCADA – Automation*

2. Electrical and Instrumentation and Control work

River Water System at Kalisindh Thermal Power Plant

Rajasthan Vidyut Utpadan Nigam is setting up a 2 x 750 MW Thermal Power Plant at

Kalinsidh, near Jhalawar in the state of Rajasthan. This is one of the most prestigious projects

of the govt. and we are proud to be working on this.



Scope:

Vaibhav Structurals is responsible for the electrical work at the thermal plant. This is an LSTK

contract, where Vaibhav Structurals is responsible for supply, erection, testing and

commissioning of the following:

a. Power Transformers

b. Distribution Transformers

c. Conductor

d. LT and HT Switchgears

e. Battery and Battery Charger

f. Cable and Conductor

g. Steel Structure

h. PLC / SCADA – Automation*

3. Lift Irrigation Scheme

Water Resource Department, Balapura

Water Resource Department is Govt. of Rajasthan enterprise responsible for managing the

water resources to farmers. They are building pump houses on various canals to supply

water to the farmers. Vaibhav Structurals was the prime contractor and executed the project

of Lift Irrigation Scheme at Balapura, which involved complete design and supply of Motors,

Pumps, Transformer, Pipings, NRVs among other required equipment.

4. Lift Irrigation Scheme

Water Resource Department, Kishanpura

Kishanpura lift scheme is a turn-key project where are all the designing, engineering was

done by Vaibhav Structurals. All the components including Pumps, Motors, Transformer,

Piping, NRVs, and Generators were designed and supplied by Vaibhav Structurals.

5. Transformer Supply and Repair

JVVNL, AVVNL, JdVVNL, Private

AVVNL, JVVNL, and JdVVNL are the three utility companies of the state of Rajasthan. Vaibhav

Group is a registered vendor with all the three companies in the highest class of Vendors,

Class A. At Vaibhav Group we are manufacturing and repairing the transformer for more

than 10 years now and in the past 10 years we have repaired + Manufactured more than

10000 transformers.



6. Steel Structure supply

JVVNL, AVVNL, ABB, LnT, RPG, Kalptaru

In the past 10 years, there has been a drastic change in the electrical infrastructure of the

State of Rajasthan. There were kilometers of transmission line that were drawn to supply

power even to the remotest place of the state.

Vaibhav Structurals was one of the first vendors to supply the requisite steel structure to

meet the growing demands of the state’s utility companies. In the past 5 years we have

manufactured and supplied more than 100,000 MT of steel structures



Products: On all our projects we supply the material as per the detailed engineering designs. On some of the

project these are designed by us and on some these are designed by the client and its consultants.

Since these are tailor made equipment, technical design is the first phase of every project, designs

submitted by us are then approved by the clients and manufacturing is commenced only upon

receipt of the approval Details for some of the products manufactured and supplied by us are as

below.

1. Transformers

Vaibhav Structurals is involved in manufacturing, supply, installation, testing, commissioning,

and repair of transformers for more than 10 years and has supplied transformers to various govt,

semi-govt and private organizations.

1.1. Distribution Transformers

Vaibhav Group has successfully manufactured, supplied,

installed and commissioned various project including

distribution transformers and all of them are working

satisfactorily. Our minimum fault failures and good

quality material has given us repeat clients and almost

100% clients are repeat clients.

Features Able to withstand Short Circuit & Impulse Voltage tests as per IS/IEC Powder Coating for excellent finish Available as CSP (Completely Self Protected) Type Designed to meet customized specifications Available as Corrugated Hermetically Sealed Type which is compact in size Various ratings type tested from NABL accredited labs

TECHNICAL SPECIFICATIONS Ratings 1 Phase, upto 11 kV , 25 kVA

3 Phase upto 33 kV, 3000 kVA

Frequency 50/60 Hz

Applicable Standards IS 2026, IEC 76, ANSI.C.57, as per customer requirement Core Wound or Stack ;

CRGO Steel or Amorphous Metal

Winding Copper

Insulating Fluid Mineral Oil, both inhibited & uninhibited, as per IS/IEC Class of Insulation Class A

Tap Changer OCTC, OLTC, as per customer requirement

1.2. Power Transformers



Vaibhav Group has been executing various projects at various

thermal power plants, substations involving supplies of Power

Transformer. Being in the industry we understand the

manufacturing process and make sure that our vendors

follow best engineering practices and conduct rigorous tests

to make sure that good quality product is supplied.

Features Robust design to take care of frequent short circuits Excellent process of shrinkage and drying of coils resulting in a sturdy construction Step-up and Step-down transformers manufactured Manufactured with prime CRGO using step-lap design for low losses Various ratings type tested from NABL accredited labs

TECHNICAL SPECIFICATIONS

Ratings 3 phase, upto 33 kV 20000 kVA

Frequency 50/60 Hz Applicable Standards IS 2026, IEC 76, ANSI.C.57, as per customer requirement

Winding Copper

Insulating Fluid Mineral Oil, both inhibited & uninhibited, as per IS/IEC

Cooling ONAN, ONAF Class of Insulation Class A

Tap Changer OCTC, OLTC, as per customer requirement

2. HT Switchgear

HT Switchgear is one our key supplies that we have made in our vast experience of

past 15 years. All the switchgears supplied by us being manufactured using the

industry best parts manufactured by ABB, SIEMENS, etc.

Features:

Air insulated Metal Clad Construction using high quality steel. Durable Epoxy powder coated finish. Compartmentalized and compact design. Easy accessibility for maintance. Meters, Relays and controls located at convenient height. Extensible on both sides. Side cable box for single panels. Compatible with state of the art Numerical protection. Fully type tested as per IEC 60298 / IS 3427. We can offer outdoor versions also.



TECHNICAL SPECIFICATION OF VACCUM CIRCUIT BREAKER CUBICLES

UPTO 11kV 22kV 33kV

INDOOR INDOOR INDOOR INDOOR INDOOR

Type A 12 62D A 12 63G MYK-12 MYK-24 MYK-36

Rated Voltage kV 12 12 12 24 36

Insulation level kVrms /

kVp 28 / 75 28 / 75 50 / 125 50 / 125 70 / 170

Rated Current A UPTO 1250 2500 3150 1250 1250

Braking Capacity kA 26.2 40 40 26.2 26.2

Dimensions

( WXDXH )

mm

650 x 1670 x 2000 /

800 x 1650 x 2000

1000 x 2000 x 2100

1100 x 2000 x 2300

1100 x 2000 x 2300

1500 x2900 x 2400

Degree Of Protection

IP4X IP4X IP4X IP4X IP4X

Weight Of Each Cubicle

kG 800 1100 1100 1100 1600

TECHNICAL SPECIFICATION OF SF6 CUIRCUIT BREAKER CUBICLES

UPTO 11kV 22kV 33kV

INDOOR INDOOR INDOOR INDOOR INDOOR

Type A 12 62D A 12 63G A 24 63G A 24 63G S 36 73G

Rated Voltage kV 12 12 12 24 36

Insulation level kVrms /

kVp 28 / 75 28 / 75 50 / 125 50 / 125 70 / 170

Rated Current A UPTO 1250 2500 3150 1250 1250

Braking Capacity kA 26.2 40 40 26.2 26.2

Dimensions

( W X D X H )

Mm

650 x 1670 x 2000 /

800 x 1650 x 2000

1000 x 2000 x 2100

1100 x 2000 x 2300

1100 x 2000 x 2300

1500 x 2900 x 2400

Degree Of Protection

IP4X IP4X IP4X IP4X IP4X

Weight Of Each Cubicle

Kg 800 1100 1100 1100 1600



3. LT Switchgear

LT Switchgear is required on almost all our turn-key projects and

is running smoothly for more than 15 years now. Our supplied LT

Switchgears are tailor made by the manufacturer under the strict

supervision and testing of our dedicated QA Team.

Features:

Designed to high fault levels upto 65 KArms Provision of electrical and mechanical interlocking of security Assembling of switchgear and bus bars ensures liberal spacing for cabling, access and maintenance PCC enclosures fabricated using strong CRCA sheet steel

Types: Motor Control Center Control Desk Distribution Board Feeder Pillar


Construction Modular and Fixed Type

Max Rated Current Upto 8000 Amp, 65KA

System Voltage 440 Volt

Rated Insulation Voltage 690 Volt Ambient Temperature 50 deg C

Type tests performed at CPRI

(Vendor’s)

Short Circuit with standard 65KA Temperature Rise with standard Degree of Protection.



4. Switchyard Equipments

As Vaibhav Group, we have executed more

than 15 switchyard projects upto 33KV

where we have executed the projects on

turn-key basis. Being a turn-key provider we

supply all the equipments that are required

for the execution of such projects.

Below are some of the important switchyard / substation equipment’s supplied by us:

4.1. Tn Line Towers

At Vaibhav Group we have our own designing team capable of

designing the towers as per the projects requirements. We have

designed, manufactured, and supplied more than 5000 transmission

line towers in the past 5 years. Vaibhav Group is one of the few A-Class

Vendors of towers to the state electricity board and has supplied more

than 2000 towers in a month for their urgent requirements.

Features:

Manufactured using MS / GI Steel

Available for both single circuit and double circuit transmission line

Comes with necessary additional items like Butt joints, and Cross Arms

Tested at various laboratories across India and by various agencies like RITES, ERDA, among

others



4.2. Isolator

As the name suggests, isolators are basically disconnectors, used

for protection from Faults in High Voltage Installations normally

used horizontally at our various project sites. All the isolators

supplies by us have been working satisfactorily.

Features:

The moving contact blade is an Aluminum /copper tube with special copper profile with a bimetallic strip fitted with silver plated copper contacts.

The stationary contacts are silver plated copper, spring loaded to maintain constant contact pressure The electrical contact system is easily and quickly replaced should it be damaged due to a fault

current or damaging event. Range of Terminal connectors to suit current requirements. Robust design and construction Encapsulation of rotary pedestals and heads No significant changes of contact resistance over many years of services Constant contact pressure Stable rotary pedestals ensure no insulator deflection even with high static load


Current Ratings 400 Amps, 630 Amps, 800 Amps, 1250 Amps, 2000 Amps, 2500 Amps, 3150 Amps, 4000 Amps

Voltage Ratings 12 KV, 36 KV, 72.5 KV, 110 KV, 145 KV, 245 KV, 420 KV, 765 KV Standards IEC 62271-Part-102-2002 or IS 9921 / 9920, IEC -129 and IEC 694 and most

international standards

Types Center Break,

Double Break Turn and Twist Double Break Banging

Vertical Break

Semi Pentograph

Pentograph Tests Routine Tests may be conducted



4.3. Dropout fuse

We have installed drop out fuses as important safety device for

small distribution transformer. The drop out fuse opens the

circuit and serves the mechanical isolation of system in case of

flow of fault current. Wherever we have installed these, they are

practically maintenance free as they required duly replacement

of fuse element.

Features:

Robust design and construction Fiber glass tube with both end tinned with non-ferrous metal parts

Phosphor Bronze contact

TECHNICAL SPECIFICATIONS Rated Voltage (KV)

Rated Current (Amps)

BILL (KV) Creepage Distance

Interrupting Current

Asym (A) Sym(A) UPTO 12 100 A 75 320 4000 2800

15.5 to 24 100 A 95/125 625 8000 5000

30 to 38 KV 100 A 150 900 8000 5000



4.4. Lightening Arrester

We have most widely used Station Class Lightening Arresters on

many of our turn key projects for the protection of station

transformer and switchgears.

Features:

Highly non-linear MOV. Explosion Proof - Pressure Relief Design. High energy handling capacity. Glazed brown Porcelain Housing. Corrosion proof Aluminum alloy metal flange. Suitable for Ambient -400C to +550C.

Absorbs temporary overvoltage and switching surges

Effective in long discharge periods

TECHNICAL SPECIFICATIONS Current Ratings 10000 – 20000

Voltage Ratings 3 – 245

Line Discharge 1 ~ 4

Standards For Pressure Relief Capacity: IEC 60099-4 and IS-3070-Part III-1993

Tests Routine Tests may be conducted



4.5. Neutral Grounding Resistors

We have installed NGRs on our River Water System for Power

Generation Plant Project, between the neutral & the earth so that it will

limit the earth fault current to a safe value [ Normally full load current of

the generator, transformer, etc.] thereby protecting the transformer,

generator system.

TECHNICAL SPECIFICATIONS Current Ratings Initial current that flows when cold and is equal to system’s full load

current. Designed as per system’s requirement.

Voltage Ratings Line to Neutral Voltage: = System Voltage / √3 . Designed as per system’s requirement.

Short Time Rating 10 / 30 / 60 seconds

Continuous Rating 5 – 10% of full load current

Standards o IEEE-32, IS-3043 & BS 162 for neutral grounding resistor.

o IS 2147 or IS 12063 of 1987 for degree of protection for

enclosure.

o IS 5 for paint shade.

o Any other standard as required.

Test Routine Tests:

Visual and Dimensional, Meger test using 1000V Meger,

Resistance measurement.

Special Test:

Temperature Rise Test – Conducted at CPRI Bangalore for

continuous and short time ratings.

Protection Test – ARAI, Pune for IP 33, IP55, and IP65 as per

IS2147 or IS12063 of 1987

Any other test if required can be conducted.



4.6. GSS Switchyard Structure

Along with the transmission line tower there are other many

other steel fabricated items like substation structure. This

consists of various clamps, channel, mounting structure, etc.

At our manufacturing units, we manufacture all the substation

structure items using MS / GI steel. All these are manufactured

as per clients’ designs and are further tested for the chemical

and mechanical tests at a third party labs. Our manufactured

items are inspected and approved by various third party agencies like RITES, among others in India.

A list of such items is as below:

1. Cross Arms

2. Top Hampers

3. Clamps

4. Mounting Channel

5. Others, as per project requirement



5. Cable

Cables are the most essential component of any electrical project,

though not the costliest product but yes without cables can anything be

done? No. There are vast varieties of cables in severals of thousands of

kilometers are used by us of including PVC / XLPE Power Cables, Control

Cables, Control and Instrumentation Cables, including various other

cable types.

Our vendor is into cable manufacturing for more than 4 decades now

and has production facility that facilitates any rating and any standard.

Recently we have offered cables to some of potential international customers where we are getting

the cables manufactured as per their specifications and as per their choice of standards.

Factors/ Grounds for Cable selection:

1. Maximum operating voltage

2. Fault Level

3. Load to be carried

4. Possible overloading duration and magnitude

5. Route length and voltage drop

6. Mode of installation considering installation environment such as ambient & ground temperature

chemical & physical properties of soil.

7. Flame retardant properties



6. ACSR/AAC Conductor

ACSR stands for Aluminum Conductor Steel Reinforced and AAC

stands for All Aluminum Conductor. AAC and ACSR conductor is very

widely used in many of our substation projects. Recently we have

used a huge quantity of ACSR conductor our River Water System turn

key projects in Rajasthan India.

Our vendor is a renowned brand globally who not only maintains

good quality but is also a member of various standardizing committees like Bureau of Indian

Standards. Their products are tested and certified at various laboratories worldwide, some of the

names are NETFA -South Africa, CESI - Italy, EDF - France, ERDA - Vadodara, India, NSIC - Kolkatta,

India, CPRI -Bangaluru, India and Tag Corporation - Chennai, India for conductors of 500 kV HVDC &

800 kV AC transmission system and also for distribution conductors of Metropolitan Electricity

Authority, Bangkok.

We have been associated with our vendors for more than 15 years and have been satisfactorily using

their products for such a long time. Widely used categories include Weasel, Dog and CANNA ACSR

Conductors.

Factors/ Grounds for Conductor selection:

1. Maximum operating voltage

2. Fault Level

3. Load to be carried

4. Possible overloading duration and magnitude

5. Route length and voltage drop

6. Mode of installation considering installation environment such as ambient & ground temperature

chemical & physical properties of soil.

7. Flame retardant properties



7. Insulators

Insulators are widely used on all our transmission line projects. Two

important classifications of the insulators that are widely used are Pin

Insulators and Disc Insulators. Made up of Porcelain, Polymer, Wood or

Glass is used to isolate a wire from physical support (pole).


Working Voltage Working voltage depends on the project requirements. Indian standard voltage levels chosen are 11KV, 22KV, 33KV

Strength Pin: 10 KN

Disc: 45 KN, 70KN

Standards Mostly as per

IS:731, BS:137,IEC:383



Clients

Some of our Esteemed Clients:

Vaibhav Structurals | Vabihav Power | Colnovation Technologies

Head Office: 1 – Ra- 11 Vigyan Nagar, Kota, Rajashan

Plant 1: H1/6(B) Electronic Complex, Road No. 1, Indraprust Industrial Area, Kota, Rajasthan

Plant 2: A-94(A), Road No.2, Indraprust Industrail Area, Kota, Rajasthan

Colnovation Technologies: 1(B), Minto House, Mission Compound, C-Scheme, Jaipur

Development Center: IT 2008, Ramchandra Pura Industrial Area, Sitapura Extn., Jaipur

www.vaibhavgroup.com www.colnovation.com

http://www.vaibhavgroup.com/

http://www.colnovation.com/

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Pid nov 2011-electrical_updated