NER — neutral grounding resistors for MV networks
NER neutral grounding resistors for medium-voltage distribution networks. They limit overvoltages and provide a current sufficient for fast, selective tripping of a single-phase earth fault.
- Purpose
- resistance grounding of the MV network neutral
- Duty
- short-time load until the faulted section is tripped
- Cooling
- natural air
- Protection
- ARS-03 device (integrity and thermal state monitoring)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The resistor works in a short-time duty until the protection trips the faulted section. Cooling is natural air and the design is for outdoor use. The integrity of the resistor and its thermal state are monitored by the ARS-03 device. Resistance grounding of the neutral is used in networks that need selective operation of earth-fault protection.
Technical specifications
| Purpose | resistance grounding of the MV network neutral |
|---|---|
| Duty | short-time load until the faulted section is tripped |
| Cooling | natural air |
| Protection | ARS-03 device (integrity and thermal state monitoring) |
| Design | outdoor |
Replacement for
no direct analog; neutral grounding resistors 6–35 kV (generic type)
selected by purpose and main parameters, please confirm with our manager
Request a price and lead time
NER — neutral grounding resistors for MV networks. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8533 40 90 00 |
|---|---|
| HS, 6 digits | 8533 40 |
| CN (EU) | 8533 40 90 |
| HTSUS (USA) | 8533 40 80 70 |
| China customs tariff | 8533 40 00 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
In what duty does the NER resistor operate?
In short-time duty until the faulted section is tripped.
How is the condition of the resistor monitored?
The ARS-03 device monitors the integrity of the resistor and its thermal state.
Can the resistor be installed outdoors?
Yes, the design is for outdoor use, with natural air cooling.
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