Company Introduction:
Dehler Technology Co., Ltd. specializes in producing high and low voltage switchgear, box type substation, cable branch box, outdoor vacuum circuit breaker, isolation switch, grounding switch, load switch and low voltage components ,High voltage ceramic wall bushing and other products.
Introduction:
Self-energy type SF6 circuit breaker LW36B-126 is outdoor unit which is developed by our company and Xi'an High Voltage Apparatus Research Institute with sulfur hexafluoride gas as insulation and arc extinguishing medium and principle of single variable pressure cabinet type arc extinguishing. The product is suitable for 126KV three-phase AC 50HZ power system, which is used for points and load current , overload current and
short circuit current.
Environmental Condition:
Ambient temperature:-40ºC~+40ºC
Altitude:≤2000m
Wind pressure:≤700Pa
Daily temperature differenc:25ºC
Icing thickness:≤10mm
Technical Data:
Dehler Technology Co., Ltd. specializes in producing high and low voltage switchgear, box type substation, cable branch box, outdoor vacuum circuit breaker, isolation switch, grounding switch, load switch and low voltage components ,High voltage ceramic wall bushing and other products.
Introduction:
Self-energy type SF6 circuit breaker LW36B-126 is outdoor unit which is developed by our company and Xi'an High Voltage Apparatus Research Institute with sulfur hexafluoride gas as insulation and arc extinguishing medium and principle of single variable pressure cabinet type arc extinguishing. The product is suitable for 126KV three-phase AC 50HZ power system, which is used for points and load current , overload current and
short circuit current.
Environmental Condition:
Ambient temperature:-40ºC~+40ºC
Altitude:≤2000m
Wind pressure:≤700Pa
Daily temperature differenc:25ºC
Icing thickness:≤10mm
Technical Data:
| No. | Item | Unit | Data | |
| 1 | Rated voltage | KV | 126 | |
| 2 | Rated current | A | 3150 | |
| 3 | Rated frequency | HZ | 50 | |
| 4 | First pole to clear factor | 1.5 | ||
| 5 | Rated short circuit breaking current | KA | 40 | |
| 6 | Rated short-circuit current (peak) | KA | 100 | |
| 7 | Rated short-circuit withstand current | KA | 40 | |
| 8 | Rated power frequency withstand voltage(1min) | Phase to earth | KV | K·230 |
| Phase to phase | K·(230+70) | |||
| 9 | Rated lightning impulse withstand voltage | Phase to earth | KV | K·550 |
| Phase to phase | K·(550+103) | |||
| 10 | Rated peak withstand current | KA | 100 | |
| 11 | Rated out of step current | KA | 10 | |
| 12 | Near fault current | KA | 90%1K | |
| 13 | Electrical life of rated short circuit breaking current | times | 20 | |
| 14 | Rated short circuit duration | s | 4 | |
| 15 | Rated line charging close current | A | 31.5 | |
| 16 | Rated operation sequence | O-0.3s-CO-180s-CO35 | ||
| 17 | Main circuit resistance | μΩ | ≤35 | |
| 18 | Rated SF6 gas pressure | MPa | 0.6 | |
| 19 | SF6 gas leakage rate | ppm | ≤0.55 | |
| 20 | Moisture content of SF6 gas (V/V) | ≤150 | ||
| 21 | Mechanical life | times | 10000 | |
| 22 | Electric distance | Phase to earth | mm | 3906/3150 |
| Phase to phase | 3906/3150 | |||
| 23 | Each filled with SF6 gas quality | kg | 8 | |
| 24 | Quality of each circuit breaker | kg | 1700 | |