Technical Features :

Manufacturing Standards

The transformers are built in accordance with IS 2026/IS 11171 and IEC 726 standards

Core

The core is built of cold rolled oriented grain steel with low specific losses, insulated on both sides by a thin inorganic coating (Carlyte). The sheets composing the core are cut at 45 degrees C. Uniform pressing, stiffness and solidity of the columns assure a low noise level.

High Voltage Windings

The high voltage windings are realized by disc/ Comb winding, depending on the feeding voltage and transformer power. The copper conductor is NOMEX/FIREGLASS insulated or class H enamel. Adequate axial channels between the layers of windings grant a uniform cooling. Insulation between high and low voltage and core is made by fibreglass cylinders. All the winding are dried in an oven and impregnated under vacuum by using class F/H insulating Varnishes/ Resin.

Low Voltage Windings

The low voltage windings are made of copper Strip/Foil (Above 1000 KVA). This modern technology assures an excellent resistance to electrodynamic stresses, much higher than the one obtained with traditional elix windings. The insulation between windings is obtained by using class F/H material.

Standard Accessories

Optional Accessories

Technical Datasheet

Terminal Arrangement

Rating and diagram plate
Earthing terminal
Skid under base
Bidirectional wheels
- Primary Terminal
- Secondary terminal
- Lifting lugs
- Enclosure with IP 21, 23 or other protection class
- Temperature monitoring unit with display

Over current relay
Forced ventilation system
Surge Arresstor
On Load Tap Changer with RTCC and AVR
Jacking Screw
Anti-Vibration Pad
Over current relay
Forced ventilation system

Test:

All transformers are individually tested with routine test, according to standard IS 2026/ 11171 and IEC 726. Upon request the following type test can be carried out.

Temperature Rise Test
Full Wave Impulse Test
Short Circuit Test

Standard Applicable :	IS 2026, IS 11171, IEC 726
TYPE :	Open / Enclosed
Temperature Class :	155/140/120 °C
Insulation class :	H / F /B
Protection Class	IP-21/23/33/44
Installation	Indoor / Outdoor

Coming soon...