FN7-12 KV Series Indoor H.V. Load Breaking Switch With Fuse
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FN7-12 KV Series Indoor H.V. Load Breaking Switch General Description
FN7-12 AC high-voltage load switch is a new type of gas-producing indoor high-voltage load switch, suitable for AC 50/60HZ, rated voltage 12kV, three-phase AC power system, as the breaking load current and for closing short-circuit current.
FN7-12R series high-voltage load and fuse combination appliances are based on FN7-12 series high-voltage load switch, adding side operating mechanism, making the installation more simple and convenient, and can meet the different requirements of users.
Model Meaning
Normal working environment
1. Ambient air temperature not higher than +40°C not lower than -25°C.
2. Altitude not more than 1000m above sea level
3. Relative humidity, daily average not more than 95%, monthly average not more than 90%.
4. The surrounding air should be free from obvious pollution such as corrosive, combustible gases and water vapour bodies.
5. No regular strenuous exercise -
FN7-12 Load break switch with fuse main technical parameter
Classification Full type DS Earth switch at the wire-in end DX Earth switch at the wire-out end L Interlock device R Fuse box RA String fuse box F Off device by motor Without tripper FN7-12 – – – – – – FN7-12DSL △ – △ – – – FN7-12DXL – △ △ – – – FN7-12R – – – △ – – FN7-12DSLR △ – △ △ – – FN7-12DXLR – △ △ △ – – With striking tipper FN7- 12RAF – – – – △ △ FN7-12DSLRAF △ – △ – △ △ FN7-12DXLRAF – △ △ – △ △ Specified parameter:
Rated voltage Max.voltage Rated current Power frequency withstand voltage 4S heat-stabling current(value) Machine stabling current(peak) Short-circuit corntrlling current Rated switch-off current Rated transfer current 12 12 400 42/48 12.5 31.5 31.5 400 1000 630 75/85 20 50 50 630 1000 Rated parameter of fuse box:
Model Rated voltage(kV) Rated current(A) Fuse body rated current SDLA*J 12 40 6.3, 10, 16, 20, 31.5, 40 SFLA*J 12 100 50, 63, 71, 80, 100 SKLA*J 12 125 125 FN 7-12 KV Series Indoor H.V. Load Breaking Switch Dimension reference
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