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Vacuum load switch

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Indoor high voltage vacuum load switch

Indoor high voltage vacuum load switch Indoor high voltage vacuum load switch

Indoor high voltage vacuum load switch

  • Category:Vacuum load switch
  • product description FZN25-12D/630-20 AC high voltage load switch is an indoor device with three-phase AC 50Hz and rated voltage of 12kV. It is suitable for industrial and mining, enterprises, power distribution stations and substations. Split and c
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Product Description

product description

 FZN25-12D/630-20 AC high voltage load switch is an indoor device with three-phase AC 50Hz and rated voltage of 12kV. It is suitable for industrial and mining, enterprises, power distribution stations and substations. Split and close load current, closed loop current, no-load transformer and cable charging current.

 Equipped with manual and motor operating mechanisms, it is convenient to realize the three remote control requirements of the power system.

 FZN25-12D/T125-31.5 AC high voltage vacuum load switch - fuse combination is an indoor device with three-phase AC 50Hz, rated voltage 12kV, suitable for industrial and mining, enterprises, power distribution stations and substations, etc. and short circuit protection. The equipped grounding switch can withstand short-circuit current. The operating mechanism can be manual and electric, which is convenient to realize the three remote control requirements of the power system.

 FZN25-12D, FZRN25-12D load switches and combination appliances are suitable for load control and short circuit protection in urban power distribution stations and industrial electrical equipment powered by three-phase ring network or terminal. Because the protective effect of combined electrical appliances on electrical equipment such as transformers is more reliable and economical than circuit breakers, it is especially suitable for ring network, dual-radiation power supply units and box-type substations.

technical parameter


serial number project unit parameter
FZN25-12D/T630-20 FZN25-12DR/T100-31.5
1 Rated voltage kV 12
2 Rated frequency Hz 15
3 Rated current A 630 100
4 Rated insulation level Power frequency withstand voltage (RMS) kV Arc interrupter fracture 30;
Ground and phase 42; isolation
Lightning impulse withstand voltage (peak) kV Ground and interphase 75; isolation fracture 85
5 Rated dynamic stable current (peak value) kA 50
6 4S thermal stable current kA 20
7 Rated active load breaking current A 630
8 Rated closed-loop breaking current A 630
9 Rated cable charging breaking current A 10
10 Rated breaking no-load transformer capacity kVA 1600
11 Rated transfer current A 2000
12 Fuse model SDLAJ-12, SFLAJ-12
13 Impactor output energy J 2-5 (medium)
14 Rated short-circuit making current kA 50
15  Earthing switch rated dynamic stable current (peak value) kA 50
16 Grounding switch 2S thermal stable current kA 20
17 Auxiliary circuit rated voltage V AC DC220 AC DC110
18 Institutional Lifespan Second-rate 10000