Specifications 1. Rated voltage: 12KV 2. Rated frequency: 50HZ 3. Rated current: 125A 4. Rated short circuit breaking current: 31.5KA FZRN25-12 high voltage vacuum load break switch Introduction: 1. FZRN25-12D/T125-31.5 indoor AC high voltage vacuum load switch-fuse composite apparatus is a indoor device for 3 phase AC 50HZ, rated voltage 12KV power distribution system, it is applied to the distribution substation of industrial and mining enterprise and substation to be the use of load control and short circuit protection. 2. The matched earthing switch can withstand the short circuit current, and manual and electric operation for the operating mechanism are both available. 3. On account of the protection function of composite apparatus to transformer and other electrical equipments is more reliable and economic, so it is especially suitable for ring main and double radiation power supply unit, as well as the box type substation.
1min power frequency withstand voltage
Arc extinguish chamber fracture 30
Rated insulation level
To Earth and phase to phase 42, isolating fracture 48
Lightning impulse withstand voltage(peak)
To Earth and phase to phase 75, isolating fracture 85