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High-voltage SF6 circuit breaker for outdoor installation type LW36-40.5
Outdoor high-voltage SF6 circuit breaker LW36-40.5/1250A-2000A is a high-voltage electrical equipment for outdoor installation of three-phase alternating current 50Hz.
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Product Description
Outdoor high-voltage SF6 circuit breaker LW36-40.5/1250A-2000A is a high-voltage electrical equipment for outdoor installation of three-phase alternating current 50Hz. It is designed for control and protection in 35 kV power transmission and distribution systems, and can also be used as an intersection switch and for switching capacitor banks.
This series of switches is equipped with a spring drive type CT14.
The circuit breaker complies with the requirements of GB1984-89 "High Voltage AC Circuit Breakers" and the International Electrotechnical Commission IEC publication "High Voltage AC Circuit Breakers".
| No. | Parameter name | Unit change | Meaning | |
| 1 | Rated voltage | kV | 40.5 | |
| 2 | Rated frequency | Hz | 50/60 | |
| 3 | Rated current | A | 1000/1250/1600/2000/2500/3150/4000 | |
| 4 | Rated short circuit breaking current | kA | 25/31.5/40 | |
| 5 | Rated short-circuit inrush current (peak) | kA | 60/80/100 | |
| 6 | Rated short-time current (thermal resistance) | kA | 25/31.5/40 | |
| 7 | Rated peak current of electrodynamic resistance (dynamic resistance) | kA | 63/80/100 | |
| 8 | Rated breaking current in non-synchronous mode | kA | 6.3/8.0/10.0 | |
| 9 | Number of shutdowns at rated short-circuit current | cycles | 30 | |
| 10 | Short circuit current duration | with | 4 | |
| 11 | Rated lightning impulse voltage: impulse withstand voltage: | between phases / phase-ground | kV | 185 |
| between open contacts | kV | 215 | ||
| 12 | Rated power frequency test voltage for 1 min withstand voltage: | between phases / phase-ground | kV | 95 |
| between open contacts | kV | 118 | ||
| 13 | Nominal sequence of operations | ms | 0-0.3s-CO-180-CO | |
| 14 | On time | ms | ≤100 | |
| 15 | Shutdown time | ms | ≤50 | |
| 16 | Arc extinction time | ms | ≤50 | |
| 17 | On-off cycle time" | ms | ≤60 | |
| 18 | Non-simultaneous inclusion of three phases | ms | ≤3 | |
| 19 | Non-simultaneous shutdown of three phases | ms | ≤2 | |
| 20 | Turn-on and turn-off coil voltage | B | Constant current: 220 / 110 | |
| 21 | Energy storage motor voltage | B | AC: 220 / 110; DC: 220 / 110 | |
| 22 | Circuit resistance per phase | µOhm | ≤70 | |
| 23 | Nominal gas pressure SF₆ | MPa | 0.45 | |
| 24 | Annual SF₆ gas leak | % | ≤5% | |
| 25 | Gas humidity SF₆ | µl/l | ≤150 | |
| 26 | Radio interference level | µV | ≤2500 | |
| 27 | Mechanical wear resistance | cycles | 10000 | |
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