Description
LW36-126(145) outdoor self-energy type circuit breaker is six sulfur hexafluoride gas as insulation and arc extinguishing medium , CT30 spring operation mechanism and the principle self-blown arc extinguishing of single variable pressure distance. The product is suitable for 72.5kV (126kV) three-phase AC 50HZ power system, which is used for points and load current , overload current and short circuit current.
Environment Condition
Ambient temperature:-40℃~+40℃
Altitude:≤2000m
Wind pressure:≤700Pa
Daily temperature differenc:25℃
Icing thickness:≤10mm
Pollution degree: III(25mm/kV).
Technical Data
| Rated voltage | kV | 126 (145) | ||
| Rated current | A | 1250, 2000 | ||
| Rated frequency | HZ | 50 | ||
| First pole to clear factor | 1.5 | |||
| Rated short circuit breaking current | kA | 40 | ||
| Rated short-circuit current (peak) | kA | 100 | ||
| Rated short-circuit withstand current | kA | 40 | ||
| Rated power frequency withstand voltage (1min) | Phase to earth | kV | K·230 | |
| Phase to phase | K·(230+70) | |||
| Rated lightning impulse withstand voltage | Phase to earth | kV | K·550 | |
| Phase to phase | K·(550+103) | |||
| Rated peak withstand current | kA | 100 | ||
| Rated out of step current | kA | 10 | ||
| Near fault current | kA | 90%1K | ||
| Electrical life of rated short circuit breaking current | times | 20 | ||
| Rated short circuit duration | s | 4 | ||
| Rated line charging close current | A | 31.5 | ||
| Rated operation sequence | O-0.3s-CO-180s-CO35 | |||
| Main circuit resistance | μΩ | ≤35 | ||
| Rated SF6 gas pressure | MPa | 0.6 | ||
| SF6 gas leakage rate | ppm | ≤0.55 | ||
| Moisture content of SF6 gas (V/V) | ≤150 | |||
| Mechanical life | Times | 10000 | ||
| Electric distance | Phase to earth | mm | 3906/3150 | |
| Phase to phase | 3906/3150 | |||
| Each filled with SF6 gas quality | KG | 8 | ||
| Quality of each circuit breaker | KG | 1700 | ||
Order instruction
1.The type and the specification of the circuit breaker.
2.Rated electrical parameter(voltage, current, rated short-circuit breaking current and so on).
3.Environmental condition(temperature, altitude, filth level and so on).
4.Rated electric parameter of control loop(rated voltage of energy storage of the opening and closing coils).
5.The name and the direction of the primary upper terminal .
Outline & Mounting Dimensions
