1:Type: HXGN ring main unit 2.up to 36kv 3.ISO9001,ISO14001,IEC 4 type test report 5 outdoor or indoor
HXGN-12 ring net vacuum circuit breaker ring main unit
the 12kv ring main unit is suitable for the distribution system of mining and industrial enterprises, residential quarters, high-rise buildings, school and park as the power supply unit and terminal distribution equipments of the indoor 10KV, 50Hz AC three-phase. 12kv ring main unit can connect and break the rated load current and the no-load current of the transformer, and 12kv ring main unit can also connect or break the capacitor current of the overhead lines, cable lines or the capacitor bank.
Load switch-fuse combination cabinets can break the rated short-circuit current at one time. And 12kv ring main unit used to protect, receive and control the power in the distribution equipments. 12kv ring main unit is mainly equipped with FN5, FN7 switches, FN12 variable pressure differential switch, FZN121, FZN25 vacuum switch.
3. Technical parameters of ring main unit
Serial No | Item | Unit | Technical parameters | |
1 | Rated voltage | KV | 12 | |
2 | Rated current | A | 630 | |
3 | Rated short time withstand current 4s | KA | 20 | |
4 | Rated withstand current (peak) | KA | 50 | |
5 | Rated short time withstand current 2s of grounding switch | KA | 20 | |
6 | Rated withstand current (peak) of grounding switch | KA | 50 | |
7 | Rated short circuit making current (peak) of grounding switch | KA | 50 | |
8 | 1min power frequency withstand voltage | Phase-phase, phase-earth, vacuum fracture | KV | 42 |
Isolation fracture | 48 | |||
9 | Protection degree | IP2X | ||
HXGN-12 high voltage incoming line 12kv 630A ring main unit
