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R. S. I. Switchgear Private Limited
R. S. I. Switchgear Private Limited




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Power Resistors

Our company offers our clients with Power Resistors are fulfils all the requirements of our clients proving wide range of them. They are distinctively used in various industries accordingly and provides a long lasting service to our clients.


Neutral Grounding Resistors


Neutral Grounding Resistors

These are used to minimize fault current to a predetermined value,, Neutral Grounding Resistor is placed in between the neutral of a generator or a Transformer and Ground. This produces a value that is sufficiently low to prevent damaging fault currents to the Power generation, distribution and other associated equipments, yet high enough to operate clearing relays.

Resistor Grids are formed in Punched Stainless Steel and Edge Wound Design. These elements are provided with mica or ceramic insulator of suitable voltage rating.


Load Banks

Load Bank Resistors are used as dummy loads for testing circuit breakers and high frequency radio transmitter systems, generators, tansformers and batteries etc/ Portable and trailer mounted Load Banks are manufactured as per customers requirement.

Load Banks having different steps of resistance can be supplied alongwith associated Control Panles to switch on resistance value as desired.


Load Banks

Damping Resistors


Damping Resistors

A Damping Circuit consisting of a Resistor and Reactor connected in parallel, limits the amplitude of the Capacitor Discharge current to a safe value and also helps in rapid dispassion of energy. Under normal circumstances the Damping Resistors come into picture whne the bypass breaker is intentionally closed for maintenance purposes. The Resistors are then expected to perform a continuous duty. The Resistors can be custom made and designed to meet various applications and operations. We also offer corrosion resistant design for off-shore applications having high voltage Strength. We design and offerupto 220 KV Voltage rating.

Our Damping Resistors have been Type Tested for Impulse & Short Circuit Tests from ERDA, Vadodra.

Dynamic Braking Resistors

Dynamic Braking is widely used method of braking a loud driven through moters as it invloves no wear & tear unlike with mechanical brakes.

The ohimic value of DBR is selected such that it causes maximum braking current at the instant of starting of the braking. the maximum braking current depends upon the overload capacity of the motor.

We offer in both PSS (Punched Stainless Steel) Design for medium and high ratings, and WW (Wire Wound) Design for low ratings.


Dynamic Braking Resistors


Brake Resistor


Brake Resistor

The Resistor is a part of the brake chopper, which operates at a frequency of 300 Hz. It is mounted on the roof of the locomotive and has natural cooling. The resistor is used in case of an emergency brake. In case the line can not sink current, before the mechanical brakes have taken over. These are used in EMU Coaches.

Motor Control Resistors

Resistance is the main component for starting and speed control of all motors whether AC or DC used for Cranes, Winches, Colliery Haulages, Rolling Mills or any other heavy equipment. The resistance can also be supplied along with Associated Control Panels.

  • Construction suitable for vibration amplitude of 3G in Horizontal and Vertical direction which makes these Resistances most suitable for Cranes/ Haulages etc
  • Draw Out/ Non Draw Out type of construction
  • Protection class Enclosure IP- 00. IP-11, IP-33, or any other specific  protection for different environmental conditions
  • Balanced/Unbalanced  Resistance for Master Controller/ Drum Controller Operation
  • Manufactured to meet IS/BS/IPSS1:10 or any other National/ International specification
  • Single Phase/ Three Phase Resistance Box
  • Wire wound/ Rod Grid/ Punched Steel/ Edge Wound construction
  • Bolted/ Welded connection between the grids
  • AISI 304/ AISAI 406 (FeCrAi)/ Nichrome/ Cu-Ni or any other material as per the design/ customer requirement
  • Resistance elements are designed to take care of current time taking

Motor Control Resistors


Resistor for Harmonic Filter


Resistor for Harmonic Filter

The Resistor for Harmonic Filter for 3 Phase Locomotives is made from tape of Nichrome Material (Ni 60%, Cr 15%) ion the form of corrugated shape, with a certain pre-tension, is wounded in the form of meanders around the ceramic insulators, which are fixed with transverse rods on to the resistor frame. The elasticity due to corrugation of the resistor tape ensure good stability of its shape, even at high temperature. The complete Filter resistor assembly is mounted in the roof of the locomotive.









Contact us

Mr. Pankaj
F-252 & 253, RIICO Industrial Area, Kehrani, Bhiwadi Extn
Alwar, Rajasthan - 301019, India



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