high voltage circuit breaker -Excellent insulation and arcing performances; -Best price and quickly delivery.
LW8-40.5 Series Sulphur hexafluoride high voltage circuit breaker
Main technical data
No. | Name | Unit | Data | |||
1 | Rated voltage | kV | 40.5 | |||
2 | Rated insulation level | Lightning impulse withstand voltage (full-wave peak) | kV | 185/215 (across isolating distance) | ||
Power frequency withstand voltage (rms1min) | 95/118 (across isolating distance) | |||||
3 | Rated frequency | Hz | 50 | |||
4 | Rated current | A | 1600 | 2000 | ||
5 | Rated short time withstand current | kA | 25 | 31.5 | ||
6 | Rated peak withstand current | kA | 63 | 80 | ||
7 | Rated short-circuit breaking current | kA | 25 | 31.5 | ||
8 | Rated short-circuit making current (peak) | kA | 63 | 80 | ||
9 | Rated out-of-phase breaking current | kA | 6.3 | 8 | ||
10 | Rated short-circuit duration | s | 4 | |||
11 | Rated operating sequence |
| O-0.3s-CO-180s-CO | |||
12 | Rated switching single capacitor bank current | A | 400 | |||
13 | Total breaking times at rated short-circuit breaking current | time | 20 | |||
14 | Mechanical life | time | 6000 | |||
15 | Opening time under rated operating voltage | s | ≤0.06 | |||
16 | Closing time under rated operating voltage | s | ≤0.10 | |||
17 | Rated pressure of SF6 gas at 20°C | Mpa | 0.45 | |||
18 | Alarm pressure of SF6 gas at 20°C | 0.42 | ||||
19 | Blocking pressure of SF6 gas at 20°C | 0.40 | ||||
20 | Annual leakage rate of SF6 gas |
| ≤1% | |||
21 | Moisture content of SF6 gas at 20°C | PPm(v/v) | ≤150 |
LW8-40.5 Sulphur hexafluoride high voltage circuit breaker