35kV 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.
Characteristic:
1/ Entirety assembly and transportation;
2/ Easy to install and more stable;
3/ Anti-corrosion and anti-aging.
Standard Technical Data:
Below info. only for your reference, all data shall be specified and determined by technical specification and customer demand.
| Item | Description | Offered | ||
| 1 | Type | TJZB-35 | ||
| 2 | TR rated voltage | kV | 35 | |
| 3 | Power frequency voltage | kV | 95 | |
| 4 | Lightning impulse voltage withstand | kV | 185 | |
| 5 | Metal-oxide surge arrester | Type | Y(H)1.5W-30/98 | |
| Rated voltage | kV | 30 | ||
| Residual voltage at lightning impulse | kV | ≯98 | ||
| Residual voltage at switching impulse | kV | ≯88 | ||
| Reference voltage at D.C. 1mA | kV | ≮61 | ||
| Leakage current at 0.75U1mA | μA | ≯50 | ||
| 6 | Disconnect switch | Rated voltage | kV | 40.5 |
| 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 | 55±10% | ||
| Impulse discharge voltage | kV | ≯150 | ||
| Gap distance | mm | 30~35 adjustable | ||
| 9 | Monitor | Type | JCQ-CⅠ | |
| Current measurement range | mA | 0~5 | ||
| Operation current range | A | 50~20000 | ||
Reference:
1/ Shendian resistor is widely used in China EHV (Extra hight voltage) projects of State Grid, Southern Power Grid.
2/ Supplied resistor to ABB/Siemens/Schneider more than 20 years, as well as other capacitor/switchgear manufacturers.
3/ Shendian resistor has been exported to more than 30 counties all over the world.
