Crompton greaves, a part of the avantha group, and a conglomerate with the global footprint manufactures furnace/thyristor/ rectifier duty transformer. All the plants of the division are certified under iso 9001 and iso 14001. The products are certified by a range of international certifying authorities including is, iec, en, as, bs & ansi etc. Furnace/thyristor/ rectifier duty transformer ranges up to 10,000 kva, 33 kv. These are mainly used in railways, electric power stations and industrial applications.