Speedage resistors are designed to meet requirement for both ac and dc application for eot cranes, winches, rubber mills, steel mills, flour mills, coal mines, cement mills, power plants, conveyors, coke oven and blowers, etc., for speed control and developing starting torque. The specification complies with bss 587:1957. The basic types are stainless steel wire grid and stainless steel punched grid. These are designed and manufactured for current ratings from 10 to 260 a continuous resistors of higher ratings are manufactured by using 2 or more parallel paths. Resistors with short time ratings up to 3000 a or even more for neutral earthing are possible which are suitable for system voltage up to 11 kv and above, or any other requirement specifically. Resistors can be designed to bss/vde/nema/ieee or any other requirement specified by customer.
