Grounding Reactors

ACUTRAN NEUTRAL GROUNDING REACTORS

Grounding Reactors

Acutran Neutral Grounding Reactors are used in Industrial applications for grounding wye connected generators. They are usually connected between the neutral and the ground to control the line-to-ground fault current. Acutran’s Neutral Grounding Reactor is a Current Limiting Reactor which limits the fault current to a level that can accommodate the protective relays and prevent fault current from damaging your equipment.

The advantage of a NGR:

Reduced over-voltages.
Reduced equipment damage.
Isolation of faulted circuit and quicker location identification.
Increased protection of transformers, generators and auxiliary equipment.
Reduced operation/maintenance expense.
Increase safety.
Improved reliability.
Reduced frequency of faults.

Which to choose – Reactor or Resistor?

Acutran makes systems using both reactors and resistors. In general, if the customer is looking to significantly restrict the fault current using actual resistance, then a resistor is the way to go. However, if the system as a high tolerance to large fault currents of 500A or more then a reactor is more appropriate. Normally, in the end a reactor is more cost efficient.

Standard Features

Single Phase / Three Phase
Standard Medium Voltage Units
200°C Insulation System
Vacuum Pressure Impregnation
Copper Conductors
NEMA 3R Enclosure
Temperature Control Features

Optional Feature

Custom Current Ratings
Custom Fault Duration Ratings
Integrated Ground Fault Relays
Epoxy End Capped Coils
220°C Insulation System
Disconnect Switches
Current Transformer
NEMA 1, 4X or 12 Enclosures

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