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CG Power Systems
Synchronous generators

Synchronous generators

Product catalog summary

Introduction
Crompton Greaves, established in 1937 in India, is a leader in electrical technology, specializing in energy generation, transmission, and distribution solutions. The company has maintained its leadership in electrical energy management.

Generator Specifications
CG provides generators in salient and cylindrical pole constructions, including 2 pole turbo alternators. These are custom-built for industries like steel, cement, and chemical, and are compatible with diesel engines and steam turbines. They feature self-excited, self-regulating systems with brushless or static excitation.

Performance and Design
Designed for a power factor of 0.8 lagging, CG generators undergo a two-minute overspeed test for safety. They support 50Hz or 60Hz frequencies and voltages from 400V to 15000V, ensuring a sinusoidal voltage waveform and accommodating unbalanced load currents up to 8%.

Efficiency and Overload Capacity
High efficiency is achieved through low-loss materials and effective cooling. Generators can handle overloads of 1.5 times the rated current for 30 seconds and 110% rated output for one hour in diesel engines.

Construction and Materials
Heavy-duty shafts are made from high carbon steel, with stator windings using mica tape insulation. The vacuum pressure impregnation process ensures high-quality insulation. The stator frame is optimized for airflow, and the rotor is made from steel forgings.

Advanced Features
Features include a heavy damper circuit, skewed stator, and built-in auxiliary winding, designed for minimal vibrations and noise, high overload capacity, and robust construction.

Cooling and Protection
Cooling is provided by radial fans, with anti-condensation heaters protecting windings when not in use. Temperature sensors monitor winding and bearing temperatures.

Turbo Generators
Turbo generators are designed with advanced computation technology, focusing on electromagnetic and mechanical design. They feature a horizontally split stator frame and sleeve pocket bearings.

Standards and Compliance
Generators comply with IEC and ANSI standards, with rated voltages of 11.5 kV for 50 Hz and 13.8 kV for 60 Hz. They offer IP54 protection and can operate at class B or F temperature rises.

Conclusion
Crompton Greaves offers custom-built, high-efficiency generators with advanced features and robust construction, suitable for diverse industrial applications.

Specifications
GTG generators meet short-circuit and short-time thermal requirements per reference standards. They handle unbalanced loads in compliance with IEC and ANSI standards, operating within a voltage range of ±5% and a frequency range of ±2%, with design flexibility for various specifications.

Historical Installations
The document lists numerous installations of steam turbines, hydro turbines, diesel engines, and MG sets across various countries from 1889 to 2002. Key data includes year, client, plant location, quantity, MVA, voltage, and pole count, highlighting projects in Hungary, Poland, India, and other countries.

Key Data Summary
Tables provide detailed historical data on installations, showcasing Crompton Greaves' extensive experience and global presence in power generation equipment, reflecting their capability to deliver customized solutions across different regions and technical requirements.

Catalog excerpts

Maquetacin 1 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:22.00pt "Arial", sans-serif; } .font1 { font:52.00pt "Arial", sans-serif; } .font2 { font:74.00pt "Microsoft Sans Serif", sans-serif; } synchronous ■ generators your own power house

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Maquetacin 1 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Arial", sans-serif; } .font1 { font:11.00pt "Arial", sans-serif; } .font2 { font:28.00pt "Arial", sans-serif; } .font3 { font:15.00pt "Georgia", serif; } Leading The World For Gn㩩rations Crompton Greaves is a pioneer in the modem technology in electrical field which offers complte solutions for gn詩ration, transmission and distribution of energy by supplying globally recognized high-tech products delivering elevated efficiency and robustness. Since its inception, Crompton Greaves has been synonymous...

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Maquetacin 1 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Arial", sans-serif; } .font1 { font:28.70pt "Arial", sans-serif; } Solution For Your Industry CG makes generators in both type of construction i.e.-salient pole and cylindrical pole type. In addition to this 2 pole turbo alternators are also manufactured. All the generators are custom built type. It finds application in various industries like steel, cement, fertilizer, chemical, sugar, textile, float glass etc. And also in captive power plants using diesel engines, steam turbines, gas turbines,...

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Maquetacin 1 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Arial", sans-serif; } .font1 { font:13.00pt "Arial", sans-serif; } .font2 { font:14.00pt "Arial", sans-serif; } .font3 { font:18.00pt "Arial", sans-serif; } .font4 { font:33.00pt "Impact", sans-serif; } .font5 { font:10.00pt "Trebuchet MS", sans-serif; } .font6 { font:14.00pt "Trebuchet MS", sans-serif; } Capability for Unbalanced-Load Due to the fully connected damper circuit in the pole shoe of the generator , a continuous unbalanced load current of 8% is permissible as long as the rated current...

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Maquetacin 1 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Arial", sans-serif; } .font1 { font:18.00pt "Arial", sans-serif; } Insulation The stator winding copper strips are covered with mica tape to form the inter turn insulation. The ground insulation consists of required number of resin poor mica tape layers depending upon required insulation level. The resin poor mica tapes are applied all over the stretched coil. All insulated coils are inserted in core slots, wedged & laced. The wound core is put in VPI tank & vacuum is applied to remove the moisture....

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Maquetacin 1 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:8.00pt "Arial", sans-serif; } .font1 { font:10.00pt "Arial", sans-serif; } .font2 { font:14.00pt "Arial", sans-serif; } .font3 { font:28.70pt "Arial", sans-serif; } Beyond Your Expectations 1. 2. 3. 4. 5. 6. 7. Custom built generators of optimum design for various applications. Compact design and light weight construction. Heavy damper circuit for swift electrical response against fluctuations in grid. Sturdy mechanical construction. High efficiency, maximizing power generation. Skewed stator for minimizing...

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Maquetacin 1 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Arial", sans-serif; } .font1 { font:18.00pt "Arial", sans-serif; } Stator Frame The stator frame is a rigid structure of fabricated steel construction a s nd designed to ensure correct distribution of airflow over the tator core and windings. End Frame The end frames are of fabricated steel construction. They are spigoted to the stator frame and secured by accessible short bolts.

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Maquetacin 1 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Arial", sans-serif; } For high voltage Alernators, open slots are norrnally useck and the coils are cpmpletely formed and insutafed before insertion. The standard insulationsfor HT wlndings employs Class F' mate riais throughout. However class H insulation also provided on request. After the insertion of insulatf coils, the compl㯨te wound stator pack undergoes a vacuu pressure imprgnation process and curing. Addition processes are carried out to protect the coils against coroi discharges for voltage...

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Maquetacin 1 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Arial", sans-serif; } .font1 { font:19.00pt "Arial", sans-serif; } .font2 { font:26.00pt "Franklin Gothic Medium", sans-serif; } Terminais The terminais box is of ample proportions and permits easy access to the terminais. Cable boxes are provided to house the main terminals on one side and neutral terminals with provision for mouting current transformer on the other. The standard main terminals box is air insulated, designed for simplicity, reliability and ease of connection. Alternatively phase...

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Maquetacin 1 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:10.00pt "Arial", sans-serif; } .font1 { font:19.00pt "Arial", sans-serif; } .font2 { font:10.00pt "Times New Roman", serif; } 07 Field Coil The winding is done directly on insulated pole brick using enameled and fibre glass covered copper conductor. During winding procedure, resin is applied on the pole body as well as between conductor layers. The wound coil is subsequently cured under heat and pressure. For salient pole generators in higher frame size insulation between turns of field coil consists of...

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Synchronous generators

Synchronous generators

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