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FLRN36-12 model indoor AC HV load break switch can be used in indoor with three phases, 50Hz, rated voltage 12/24KV system. It mainly serves in mineral enterprise, power plant and substation for control and protection of electric equipment. It can be installed both in trolley type switchgear and fixed type switchgear.
Table 1 Basic parameter | |||||
Name | Unit | Value | |||
Rated voltage | kV | 12/24 | |||
Rated current | A | 630/1250 | |||
Rated frequency | Hz | 50/60 | |||
Rated insulation level | Lightning impulse withstand voltage | Phase to phase, phase to earth | kV | 75 | |
Insulating distance of contact | 85 | ||||
1min power frequency withstand voltage | Phase to phase, phase to earth | 42 | |||
Insulating distance of contact | 49 | ||||
4s rated short time withstand current | kA | 31.5 | |||
Rated short circuit break current | 31.5 | ||||
Rated peak value withstand current | 80 | ||||
Rated short circuit making current | 80 | ||||
Rated operation sequence | O-0.3s-CO-180s-CO | ||||
Break times of rated short circuit current | Times | 50 | |||
Mechanical life | 20000 | ||||
Break current of rated different phases earth fault | kA | 27.4 | |||
Break current of rated single capacitor bank | A | 400 | |||
Break current of rated back to back capacitor bank | 400 | ||||
FLRN36-12 12kv24kv 33kv high voltage Indoor load break switch air break switch SF6