HWG 盒式开闭站
HWG-12/24 series box-type switch station, also known as switch station. It is a distribution site that plays a switching role and is used to distribute electric energy; it is the link between the distribution power supply (110kV or 35kV substation) and the distribution network. It is an extension of the 10kV busbar of the distribution power supply, increasing the number of distribution power supplies. .
Technical Parameters
项目 | unit | Compliant with switch unit | Combination electrical unit | circuit breaker unit | ||
---|---|---|---|---|---|---|
Rated voltage | kV | 12/24 | 12/24 | 12/24 | ||
Rated frequency | A | 50 | 50 | 50 | ||
Rated current | A | 630 | Depends on fuse current rating | 630 | ||
Rated insulation level | alternately and relatively | kV | 42/65 | 42/65 | 42/65 | |
lmin power frequency withstand voltage | circuit breaker | 48/79 | 48/79 | 48/79 | ||
Control and auxiliary circuits | 2 | 2 | 2 | |||
Lightning impulse withstand voltage | alternately and relatively | 75/125 | 75/125 | 75/125 | ||
circuit breaker | 85/145 | 85/145 | 85/145 | |||
Rated short-time withstand current | kA | 25/4s | — | 25/4s | ||
Rated peak withstand current | kA | 50 | — | 63 | ||
Mechanical life | Load switch/circuit breaker | Times | 5000 | 5000 | ||
Isolating/grounding switch | 2000 | 2000 | 2000 | |||
inflation pressure | Rated inflation pressure (gauge pressure at 20°C) | Mpa | 0.04 | 0.04 | 0.04 | |
Minimum inflation pressure (gauge pressure at 20°C) | 0.02 | 0.02 | 0.02 | |||
Gas relative leakage rate | % | ≤0.01 | ≤0.01 | ≤0.01 | ||
Air box protection level | IP67 | |||||
Enclosure rating | IP43 |