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FN12-12 and FN12-12RD combined electrical appliances are three-phase high-voltage switchgear with rated voltage of 12KV and rated frequency of 50Hz, which are used for switching load current, closed-loop current no-load transformer and cable charging current, closing short-circuit current, and load switch equipped with ground switch, which can withstand short-circuit current.
Overview
FN12-12 and FN12-12RD combined electrical appliances are three-phase high-voltage switchgear with rated voltage of 12KV and rated frequency of 50Hz, which are used for switching load current, closed-loop current no-load transformer and cable charging current, closing short-circuit current, and load switch equipped with ground switch, which can withstand short-circuit current. It is mainly used in urban distribution power stations and industrial electrical equipment for three-phase ring network or terminal power supply. For responsible control and short circuit protection purposes.
Model Meaning
| F | N | 12 | 12 | D | / | 630 | – | 20 | – | □ | |
| ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ||||
| Ac high voltage load switch | Indoor | Design sequence number | Rated voltage(KV) | Ground switch | Rated active load current (A) | Rated heat stable current(kA) | Mechanical form:S hand exercise; D motor |
| F | N | 12 | (R) | D | 1 | 125 | 31.5 | □ | ||||
| ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ||||
| Ac high voltage load switch-fuse combination appliance | Indoor | Design sequence number | Rated voltage (KV) | With a fuse | Ground switch | Rated active load current(A) | Rated heat stable current (kA) | Mechanical form: S hand exercise; D motor |
Main Technical Parameters
| Item | Units | FN 12-120/630 | FN12-12RD/125-31.5 |
| Rated voltage | KV | 12 | 12 |
| Rated frequency | Hz | 50 | 50 |
| Rated current | A | 630 | 100 |
| Lightning impulse withstand voltage | KV | Ground and interphase 75, isolation fracture 85 | |
| 1 min power frequency withstand voltage | kV | Ground and interphase 42,isolation fr | acture 48 |
| Rated heat stable current | kA | 20(4S) | |
| Rated dynamic stable current | KA | 50 | |
| Rated closing current(peak) | kA | 50 | |
| Rated short-circuit breaking current | kA | 31.5 | |
| Rated transfer current | kA | 15 | |
| Disconnect no-load transformer capacity | kVA | 1250 | 1250 |
| Rated cable charging current | A | 10 | 10 |
| Rated active load current breaking times | time | 10000 | 10000 |
| Impactor trigger load switch opening time | s | <0.06 | |
| Ground switch heat stabilized current | KA | 20(28) | |
| Ground switch dynamic stable current | KA | 50 | |
| Operating power supply | 110、220 | 110、220 |
Product Structure Diagram
| Model | A | H | C | D | E | F | K | J | L | M | N | P | R | S | T | U | V | W | Z | Weight |
| FN12-12RD | 376 | 945 | 600 | 210 | 648 | 270 | 67 | 50 | 170 | 287 | 165 | 357 | 11 | 335 | 170 | 99 | 105 | 590 | 180 | 70KG |
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