F (LW3G) -12 Outdoor AC high voltage SF6 circuit breaker
1.SPF (LW3G) -12 Outdoor AC high voltage SF6 circuit breaker
2.USA quality standard
3.Low price
4.Safe operation
General description:
SPF-12AC HV SF6 outdoor circuit breaker is based on the technology of Korea, combining with the features of international and our country power supply. It is a new device for distributing electricity in condition of outdoor AC 3-phase, rated voltage 12 KV, frequency 50/60Hz, used as sectional part and LB for city network and outline switch for 35KV transformer substation with the FTU microcomputer controller. It becomes intelligent automation switch. It is a perfect product for DA.
Main technical data:
No. | Item | Unit | Data | ||||
1 | Rated voltage | kV | 12 | ||||
2 | Rated insulation level (filled by , 0.25MPa, 20°C) | Rated lighting impulse withstand voltage | Phase-phase, phase earth | KV | 75 | ||
Across isolating distance | 85 | ||||||
1 min rated short-duration power-frequency withstand voltage | Phase-phase, phase earth | KV | 42 | ||||
Across isolating distance | 48 | ||||||
Rain test withstand voltage | KV | 34 | |||||
3 | Rated current | A | 400, 630, 1250 | ||||
4 | Rated short circuit breaking current (0.25MPa, 20°C) | kA | 16 | 20 | |||
5 | Different phase grounding reclosing breaking circuit | kA | 14 | 17.4 | |||
6 | Rated operating order | I |
| O-180s-CO-180s-CO | |||
II | O-0.3s-CO-180s-CO | ||||||
7 | Rated short circuit making current (peak) | kA | 40 | 50 | |||
8 | Rated withstand current (peak) | kA | 40 | 50 | |||
9 | Rated short-duration withstand current | kA | 16 | 20 | |||
10 | Rated short circuit duration | s | 4 | ||||
11 | Rated cable-charging breaking current | A | 25 | ||||
12 | Closing instantaneous speed | m/s | 2.6±0.2 | ||||
13 | Opening instantaneous speed | m/s | 2.6±0.2 | ||||
14 | Conducting rod total stroke | mm | 58±2 | ||||
15 | Conducting rod overtravel | mm | 22±1 | ||||
16 | Different period of three-phase break (close) valve | ms | ≤2 | ||||
17 | Each phase circuit resistance | μΩ | ≤130 | ||||
18 | Rated working pressure | MPa | 0.35 (20°C) | ||||
19 | Lowest working pressure | MPa | 0.35 (20°C) | ||||
20 | Annual leak rate | % | ≤1 | ||||
21 | Reliable operation | times | 6000 | ||||
22 | Water content in SF6 | PPM | ≤150 | ||||
23 | Weight | kg | 130 | ||||
