Neutral Grounding Resistor
Neutral Earthing Resistors
- System Voltage: 6.0KV/6.3KV/11KV/22KV/35KV/60KV, Customizable
- Protection Grade: IP21/IP23/IP54, Customizable
- Faulty Current: 10A/100A/200A/400A/600A/1000A/1200A/1500A/2000A, Customizable
- Rated time: 10S, customizable
- Product description: 11KV Neutral Earthing Resistor, NER/NGR, IP23 Protection Grade, 10A faulty current and 10 seconds rated time
Neutral Earthing Resistor(NER/NGR) is suitable for the operation mode of neutral point grounding through resistance, and is widely used in transformers or generators of 6-66KV AC power grids such as power plant power system, substation power supply system, industrial and mining enterprise power distribution system, etc. on the neutral point.
Operation Environment
-
Installation location: Altitude≤1000M.
-
The highest ambient air temperature does not exceed +40°C, and the lowest air temperature does not lower than -15°C.
-
Environmental humidity: daily average relative humidity ≤ 95%, monthly average relative humidity ≤ 90%.
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The surrounding air should not be significantly polluted by corrosive or flammable gases, water vapor, etc.
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No serious pollution and frequent violent vibrations.
Related Standard
-
DL/T780-2001
-
DL/T620-1997
-
GB/T16927
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GB1208-1997
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GB4208-93
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IEEE32-1972
Selection of Common models
|
System voltage (KV) |
NER Rated voltage (KV) | Rated short time fault current (A) |
Time (S) |
Resistance(Ω)
|
|
| RSTNER6.0-100-10 | 6.0 | 3.46 | 100 | 10 | 34.6 |
| RSTNER6.0-200-10 | 6.0 | 3.46 | 200 | 10 | 17.3 |
| RSTNER6.0-400-10 | 6.0 | 3.46 | 400 | 10 | 8.6 |
| RSTNER6.0-600-10 | 6.0 | 3.46 | 600 | 10 | 5.7 |
| RSTNER6.3-100-10 | 6.3 | 3.64 | 100 | 10 | 36.4 |
| RSTNER6.3-200-10 | 6.3 | 3.64 | 200 | 10 | 18.2 |
| RSTNER6.3-400-10 | 6.3 | 3.64 | 400 | 10 | 9.1 |
| RSTNER6.3-600-10 | 6.3 | 3.64 | 600 | 10 | 6.0 |
| RSTNER10.5-200-10 | 10.5 | 6.0 | 200 | 10 | 30 |
| RSTNER10.5-400-10 | 10.5 | 6.0 | 400 | 10 | 15 |
| RSTNER10.5-600-10 | 10.5 | 6.0 | 600 | 10 | 10 |
| RSTNER10.5-1000-10 | 10.5 | 6.0 | 1000 | 10 | 6 |
| RSTNER22-400-10 | 22 | 12.7 | 400 | 10 | 31.7 |
| RSTNER22-600-10 | 22 | 12.7 | 600 | 10 | 21.2 |
| RSTNER22-1000-10 | 22 | 12.7 | 1000 | 10 | 12.7 |
| RSTNER35-400-10 | 35 | 20 | 400 | 10 | 50 |
| RSTNER35-600-10 | 35 | 20 | 600 | 10 | 33.3 |
| RSTNER35-800-10 | 35 | 20 | 800 | 10 | 25 |
| RSTNER35-1000-10 | 35 | 20 | 1000 | 10 | 20 |
| RSTNER35-1250-10 | 35 | 20 | 1250 | 10 | 16 |
| RSTNER35-1600-10 | 35 | 20 | 1600 | 10 | 12.5 |
| RSTNER35-2000-10 | 35 | 20 | 2000 | 10 | 10 |
| RSTNER66-1000-10 | 66 | 38 | 1000 | 10 | 38 |
| RSTNER66-1250-10 | 66 | 38 | 1250 | 10 | 30.4 |
| RSTNER66-1600-10 | 66 | 38 | 1600 | 10 | 23.7 |
| RSTNER66-2000-10 | 66 | 38 | 2000 | 10 | 19 |
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