Product Details & Applications
Multi-secondary cast resin transformer is the special transformer having one high voltage winding and multiple secondary windings [in range of 10 to 50] on same limb. Dry type construction offers minimum maintenance requirement and suitable for indoor installation. Special design suitable to application where input load current is largely polluted by harmonics, energization on daily basis and cyclic load condition. In addition, Multi-secondary transformers supports HVDC isolation requirement between individual secondary windings and secondary windings to ground in addition to AC isolation requirement.
Multi-Secondary transformer required at the input stage of Pulse Step Modulation [PSM] based modular High voltage power supply system. Primary winding of Multi-secondary transformer is connected with high voltage grid line and stepdown grid voltage to isolated low voltage through individual secondary windings. Further, individual secondary windings are connected to rectifier modules to have regulated DC output on PSM principal.
Broad specifications & performance of product
| Parameter | Value |
|---|---|
| Input Voltage | 11kV/22kV, 50Hz |
| Rated Power | up to 3200kVA |
| Output Voltage | Up to 1100V |
| Primary winding | 1 Nos. , star / delta connection |
| Secondary winding | Up to 50 Nos. Star/Delta/Alternative star-delta connection |
| Cooling | Air Natural / Air Forced |
| Inter-Secondary Isolation | 3kV DC |
| Overall Isolation | Up to 50kV AC Up to 100kV DC |
Testing status
Transformers are in compliance to IEC 60076 and IEC 61378.
Present status
Commercial Scale model : Technology developed with domestic industry and commercially available