 |
Oil Cool Transformers |
|
 |
Industrial Electrical Corporation is the brand manufacturer of the Distribution Transformers. The works of M/s. IEC Transformers are equipped to manufacture Distribution transformers (Oil Cool) for ratings up to 1500 KVA and nominal system voltage up to 11/33/66 KV. Our transformers are in service all over the world. To meet the ever growing demand we are updating our manufacturing capacity to increase our range of manufacture to Completely Self Protected (CSP) as per the requirements of various Electricity Boards and private customers.
The transformers are usually oil immersed, natural cooled or forced fan cooled suitable for indoor or outdoor installation. The transformers can be supplied either with Bare Bushings or Cable Boxed as per Customer's requirement. The manufacturing and testing at various stages strictly conforms to IS: 2026/1977. All fittings required are provided to suit customer's specific requirement. |
 |
The magnetic circuit is of a laminated iron core. The company uses laminations of special silicon sheet which gives a high resistivity (to reduce eddy current losses) and also a low hysteresis loss. Hot rolled or cold rolled grain oriented silicon steel is used for laminations, but cold rolled grain oriented steel laminations are used for cores in all IEC Transformers
|
| Winding & Insulation Assembly |
 |
The LV windings are made from Paper Covered Copper Strips or Aluminum Strips and while assembly of transformer LV windings is placed nearest to the core. The HV windings are wound with Super Enameled Copper Wire or Aluminum Wire or Paper Covered Round Wire or Paper Covered Strips depending up to the rating and requirement of the transformers. The cross section of the conductor is also selected in order to maintain the thermal gradient in the winding within acceptable limits to increase the life of transformer.
|
| Tapping and Tapping Switch |
|
IEC provides off load / on load tap changer switches on special requests of the clients. The basic function of the switch is to add or remove number of turns from winding depending on the supply voltage of the transformer in order to get the required rated output voltage at the secondary side. With the help of these switches fine voltage variation can be obtained depending on load and the requirement. |
|
Terminal Arrangement |
 |
The transformers are fitted with Bare Porcelain Bushings and metal parts conforming to
IS 3347 and the Specification for High Voltage Porcelain Bushing conform to IS 2099. In
addition, Transformers are supplied with the Cable Box on LV and HV or Open Type on
HV side on special requests. |
| Tank/Fabrication Box and Fittings |
| Transformer Tanks are fabricated from MS plates. The tank is fabricated as per the IS 1180-1989. After construction, tank has to pass the test to ensure that there is no leakage at the joints. For the test, tank is kept under pressure of 0.35Kg. / Sq. cm. Pressed Radiators are attached on the sides of the tank to dissipate heat generated from the winding. The number of radiators depends on the Size and Rating of the Transformer and the Cooling Area Calculation Required. Also, IEC provides detachable radiators if needed. Insulating Oil provided with Transformers are as per IS 335-1984. |
| Painting |
| The inside of the transformer tank and frame parts are given a coating of hot transformer oil resisting paint and the external part of transformer is given an external anti-corrosive primer coat and two finishing coats usually of admirably grey.
|
| List of Fitting provided on Transformer |
 |
 |
Rating & diagram plate |
|
Air release plug |
|
Plain oil level gauge |
|
Bi directional flat roller (Qty.-4 Nos.) |
|
Top filter valve |
|
Radiators (As per Design)
|
|
Earthing terminals (Qty.-2Nos.) |
|
Bottom Drain / Filter valve |
|
Lifting Lugs for Transformer |
|
Thermometer Pocket (Qty.-2 Nos.) |
|
Silica Gel Breather |
|
| Off / On circuit externally operated tapping switch |
| Testimonials |
|
|
Check Rating |
|
Induced Voltage Test |
|
Insulation Resistance Test |
|
Polarity Phase Relationship Test |
|
Winding Resistance Test |
|
Break down value test of Transformer Oil |
|
Turns Ratio Test |
|
Impedance Voltage of Transformer |
|
No load Current Test |
|
Temperature Rise Test |
|
No load losses Test |
|
Insulation level & Dielectric Test |
|
Full load losses Measurement Test |
|
Impulse Test |
|
High Voltage Test |
|
Short Circuit withstand Test |
|
|
|
|
|
| Contact Us |
 |
Industrial Electrical Corporation
602, Phase - IV, GIDC Vatva,
Ahmedabad, Gujarat - India.
Pin/Zip Code : 382 445. |
| Phone: 091 - 79 - 25831047 |
| Fax: 091 - 79 - 25834379 |
E-Mail: mn_ppk@bsnl.in
info@servostabilizers.com |
|
|
