Shendian Electric Co. Ltd
Shendian Electric Co. Ltd
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110kV Neutral Grounding Protection Device for Transformer
Product introduction:
This kind of transformer neutral protection device adopts modular construction.
It has been running well in high altitude area over decades year.
| Item | Description | Offered | ||
| 1 | Type | TJZB-110 | ||
| 2 | TR rated voltage | kV | 110 | |
| 3 | Power frequency voltage | kV | 95 | |
| 4 | Lightning impulse voltage withstand | kV | 250 | |
| 5 | Metal-oxide surge arrester | Type | Y(H)1.5W-72/186 | |
| Rated voltage | kV | 72 | ||
| Residual voltage at lightning impulse | kV | ≯186 | ||
| Residual voltage at switching impulse | kV | ≯174 | ||
| Reference voltage at D.C. 1mA | kV | ≮103 | ||
| Leakage current at 0.75U1mA | μA | ≯50 | ||
| 6 | Disconnect switch | Rated voltage | kV | 72.5 |
| Rated current | A | 630 | ||
| Operation mechanism | Motor/ Manual | |||
| Rated short-time current withstand | kA | 31.5 | ||
| Rated peak current withstand | kV | 80 | ||
| 7 | Current transformer | Rated voltage | kV | 10 |
| Rated insulation level | 42/75 | |||
| Rated dynamic current | kA | 110 | ||
| 8 | Discharge gap | Gap type | Ball/ Rod | |
| Power frequecny discharge voltage | kV | 83±10% | ||
| Impulse discharge voltage | kV | ≯215 | ||
| Gap distance | mm | 60~100 adjustable | ||
| 9 | Monitor | Type | JCQ-CⅠ | |
| Current measurement range | mA | 0~5 | ||
| Operation current range | A | 50~20000 | ||
