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[China]
Trade Verify
Address: No.23 Fazhan Ave, Xi'an New industrial Park of Xi'an High-Tech Development Zone
Contact name:xue feng
Shendian Electric Co. Ltd |
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Verified Suppliers
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330kV 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 | Offered | Offered | Offered | ||
| 1 | Type | TJZB-35 | TJZB-110 | TJZB-220 | TJZB-330 | ||
| 2 | TR rated voltage | kV | 35 | 110 | 220 | 330 | |
| 3 | Power frequency voltage | kV | 95 | 95 | 200 | 230 | |
| 4 | Lightning impulse voltage withstand | kV | 185 | 250 | 400 | 550 | |
| 5 | Metal-oxide surge arrester | Type | Y(H)1.5W-30/98 | Y(H)1.5W-72/186 | Y(H)1.5W-144/320 | Y(H)1.5W-210/440 | |
| Rated voltage | kV | 30 | 72 | 144 | 210 | ||
| Residual voltage at lightning impulse | kV | ≯98 | ≯186 | ≯320 | ≯440 | ||
| Residual voltage at switching impulse | kV | ≯88 | ≯174 | ≯299 | ≯411 | ||
| Reference voltage at D.C. 1mA | kV | ≮61 | ≮103 | ≮205 | ≮288 | ||
| Leakage current at 0.75U1mA | μA | ≯50 | ≯50 | ≯50 | ≯50 | ||
| 6 | Disconnect switch | Rated voltage | kV | 40.5 | 72.5 | 126 | 252 |
| Rated current | A | 630 | 630 | 630 | 630 | ||
| Operation mechanism | Motor/ Manual | Motor/ Manual | Motor/ Manual | Motor/ Manual | |||
| Rated short-time current withstand | kA | 31.5 | 31.5 | 31.5 | 31.5 | ||
| Rated peak current withstand | kV | 80 | 80 | 80 | 80 | ||
| 7 | Current transformer | Rated voltage | kV | 10 | 10 | 10 | 10 |
| Rated insulation level | 42/75 | 42/75 | 42/75 | 42/75 | |||
| Rated dynamic current | kA | 110 | 110 | 110 | 110 | ||
| 8 | Discharge gap | Gap type | Ball/ Rod | Ball/ Rod | Ball/ Rod | Ball/ Rod | |
| Power frequecny discharge voltage | kV | 55±10% | 83±10% | 166±10% | 190±10% | ||
| Impulse discharge voltage | kV | ≯150 | ≯215 | ≯350 | ≯480 | ||
| Gap distance | mm | 30~35 adjustable | 60~100 adjustable | 130~200 adjustable | 170~250 adjustable | ||
| 9 | Monitor | Type | JCQ-CⅠ | JCQ-CⅠ | JCQ-CⅡ | JCQ-CⅢ | |
| Current measurement range | mA | 0~5 | 0~5 | 0~10 | 0~15 | ||
| Operation current range | A | 50~20000 | 50~20000 | 50~20000 | 50~20000 | ||
