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Power Transformers

Power Transformers
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Power Transformers

Product catalog summary
Introduction
Crompton Greaves Ltd., founded in 1937, is a prominent global manufacturer of power transformers, certified with ISO 9001, ISO 14001, and OSHAS 18001, indicating its dedication to quality and environmental standards.
Company Overview
The company has expanded globally, becoming a major exporter from India in sectors like transformers, switchgear, and motors. The acquisition of the Pauwels Group has elevated Crompton Greaves to one of the top 10 transformer manufacturers worldwide.
Product Range
Crompton Greaves offers a wide range of products for power generation, transmission, and distribution, including Phase-Shifting Transformers, HVDC Converter Transformers, Reactors, Mobile and Compact Substations, and Special Application Transformers.
Technological Advancements
The company leverages advanced technology and R&D, employing techniques like 2D and 3D Finite Element Method (FEM) analysis and simulation techniques for noise, vibration, thermal, and seismic analysis to maintain competitiveness.
Manufacturing Capabilities
With a manufacturing capacity of 75,000 MVA annually across 10 plants on three continents, Crompton Greaves produces over 30,000 MVA annually in India alone.
Acquisitions and Global Reach
Strategic acquisitions, including Pauwels Group and Ganz, have expanded Crompton Greaves' global manufacturing and service capabilities, with a network of sales agents and customers in over 135 countries.
Testing and Standards
The company adheres to international standards such as IS, IEC, EN, AS, BS, ANSI, and CSA, conducting rigorous testing, including short circuit tests, to ensure product reliability and performance.
Conclusion
Crompton Greaves continues to innovate and expand its product offerings, maintaining its leadership in the power transformer industry through quality, technological advancement, and global reach.
Specifications and Design
The design of power transformers includes high rigidity yoke studs for mechanical shock resistance and five-limb core construction for reduced height. High-speed CNC machines ensure precision in core assembly.
Winding Process
The winding process uses electrolytic grade copper or epoxy bonded continuously transposed conductors (CTC) in a controlled environment, with high-quality insulation and thermally upgraded paper for emergency overloading.
Core-Coil Assembly
The core-coil assembly is supported by pressure rings for alignment, undergoing drying and hydraulic pressing for mechanical rigidity, followed by oil filling under vacuum conditions.
Tanks and Construction
Transformer tanks are made from mild steel to withstand full vacuum, designed for easy transportation, and coated with zinc-rich primer and optional epoxy or polyurethane finishes for durability.
Quality Assurance and Testing
Rigorous quality assurance processes include supplier qualification and continuous inspection, with in-house testing facilities ensuring compliance with international standards.
Process Certification
Manufacturing plants are certified to ISO 9001-2000 and ISO 14001 standards, focusing on continuous improvement and system reliability through TQM programs and R&D efforts.
Technical Documentation and Export
Technical documentation is provided electronically, with over 600 units installed in 75 countries, emphasizing meticulous planning for safe and cost-effective shipping.
Painting and Finishing
The paint system is compatible with corrosive environments, providing an aesthetic finish, with continuous product improvement noted.
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Catalog excerpts

Power Transformers-1

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:13.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:19.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:24.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:48.00pt "Franklin Gothic Medium", sans-serif; } Snart solution Power Transformera Our Journey Towards Excellence ISO 9001 ISO 14001 OSHAS 18001 CERTIFIED

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Power Transformers-2

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:11.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:15.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:38.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:48.00pt "Franklin Gothic Medium", sans-serif; } Power Transtormers Expressions of Power Crompton Greaves Ltd., established in 1937, has witnessed over seven dcades of unparalleled growth to have current sales of over INR 138.5 Billion (US$3 Billion approx). With an electrifying attitude, a fusion of exprience and expertise in the field...

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Power Transformers-3

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:15.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:38.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:48.00pt "Franklin Gothic Medium", sans-serif; } .font4 { font:34.00pt "Impact", sans-serif; } Power Transtormers CG Group of Companies Worldwide Crompton Greaves Power System (Aquisltion of Pauwels Group, Belgium A Dream Accomplished Crompton Greaves had a long cherished dream to become a formidable Indian Multinational. With the acquisition...

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Power Transformers-4

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:14.00pt "Courier New", monospace; } .font1 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:13.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:14.00pt "Franklin Gothic Medium", sans-serif; } .font4 { font:15.00pt "Franklin Gothic Medium", sans-serif; } Power Transtormers CG Power Holding NV (Pauwels Contracting) Slnce lis formation In 1977. Pauwels Contracting, (nowCG Power Holding MV) has grown to become a signltlcant division within CG. The company speclallzes in electrlcal tumkey pro|ects...

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Power Transformers-5

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:15.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:22.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:38.00pt "Franklin Gothic Medium", sans-serif; } Power Transtormers Smart solutions, Strong relationships ... for over70 years Cromplon Greaves kicked off trie Transtormers opration with their first supply to the US Army in 1937. Initial technology was from Brush Transtormers and Hawker Siddeley Power Transtormers, both trom U.K. and...

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Power Transformers-6

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:8.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:13.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:15.00pt "Franklin Gothic Medium", sans-serif; } .font4 { font:24.00pt "Franklin Gothic Medium", sans-serif; } .font5 { font:4.00pt "Tahoma", sans-serif; } Power Transtormers Crompton Greaves have the capability to produce transtormers from5kVAto575,000 kVA(1.5M kVAinabank),3.3kVto 765 kV class for various applications and contorming...

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Power Transformers-7

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:11.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:15.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:18.00pt "Franklin Gothic Medium", sans-serif; } .font4 { font:25.00pt "Franklin Gothic Medium", sans-serif; } .font5 { font:55.00pt "Franklin Gothic Medium", sans-serif; } .font6 { font:31.00pt "Tahoma", sans-serif; } LISTOF SHORT CIRCUIT TEST ON TRANSFORMERS Description ol Type Tes! Testing Type Tesl Customer for whorn Year | _ Authorlty...

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Power Transformers-8

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:15.00pt "Franklin Gothic Medium", sans-serif; } A DOMINANT PLAYER IN UHV SEGMENT Having supplied 750 kV transformers as early as in 1977, CG Electric Systems Hungary has been one of the early manufacturers of800kVclass transformers. CG India has also become a dominant player in 800 kV transformers market in India. 260 MVA, 765 kV, Single Phase Generator Transformer supplied by CG India to NTPC was the first 765 kV transformer manufactured in India. At prsent,...

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Power Transformers-9

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Franklin Gothic Medium", sans-serif; } .font1 { font:11.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:13.00pt "Franklin Gothic Medium", sans-serif; } .font4 { font:15.00pt "Franklin Gothic Medium", sans-serif; } Power Transtormers TRANSFORMERS, TECHNOLOGY Crompton Greaves have absorbe) world class technologies through collaborations for built-in total reliability. Brush Transtormers, U.K. 镕 Hawker Siddeley Power Transtormers, U.K....

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Power Transformers-10

table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:15.00pt "Courier New", monospace; } .font1 { font:11.00pt "Franklin Gothic Medium", sans-serif; } .font2 { font:12.00pt "Franklin Gothic Medium", sans-serif; } .font3 { font:15.00pt "Franklin Gothic Medium", sans-serif; } POWER TRANSFORMERS, CORE BUILDING Transformer Cores are built with CRGO, low loss silicon steel lamina-tions. Use of Hi-B grade and laser scribed laminations for the core significantly reduces no load losses and noise levels as commilted. New high speed "GEORG" CNC machines for core slitting and cropping...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.