Neutral grounding resistors are designed to detect and limit fault currents within a three phase power transformer or generator.
The resistor will be connected between the neutral point of the symetrical three phased winding and ground.
Associated to measuring apparatus, it will allow detection and control of defaults.

Neutral grounding resistors are defined through three main parameters :
- Network voltage (Un) or rated voltage (Ur = Un / √ 3)
- Fault current (In)
- Rated fault duration
For more details, please take a look at "grounding".

M.S. Resistances technology allows compact systems

In addition to the resistors, M.S. Resistances is able to supply any associated component such as current transformers, voltage transformers, surge arrestors, disconnectors
(off load, on load)... in any required configuration.

Most of the time we are able to integrate resistor and accessories in one single cubicle
Our Neutral Grounding Resistors manufacturing Process does follow the best quality Charts - See attached ITP (Inspection & Test Plan)

M.S. Resistances is the leader in the International Neutral Grounding resistor market.We can assemble the resistors in any required configuration & can get them type tested as already done for the attached ones

For your information, you can have a look at our Operation Manual for Installation, Commissioning & Maintenance