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| Project | Unit | FKN12-12Load switch | FZN25-12Vacuum load switch |
|---|---|---|---|
| Rated voltage | kV | 10 | |
| Maximum working voltage | kV | 12 | |
| Rated frequency | Hz | 50 | |
| Rated current | A | 630 | |
| Rated breaking load current | A | 630 | |
| Thermally stable current(effective value) | kA/S | 20/2 | 20/4 |
| Dynamic steady current | kA | 50 | 50 |
| Short circuit closing current (peak) | kA | 50 | 50 |
| Full load breaking times | 次 | 20 | 10000 |
| Mechanical life | 次 | 2000 | 10000 |
| 1min power frequency withstand voltage (interphase and ground) | kV | 42 | 42 |
| Lightning impulse voltage(relative to ground) | kV | 75 | 75 |
This piece explains high voltage substations by analyzing their key parts, technologies, and processes while showing how they help sustain power equilibrium and address the ever-increasing needs of modern energy systems.
Partial discharge is invisible – no sparks, no sounds, no smells – it’s only picocoulombs ofelectrical
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