FZN25 FZRN25 Indoor High Voltage Load Break Switch
FZN25, FZRN25 type vacuum load switch and composite apparatus, suitable for three- phase AC 50Hz ring network Or terminal power supply and industrial electrical equipment, for load control and short circuit protect ion use, load switch open and close the closed loop current, no-load transformer and cable charging current, composite apparatus can break any current till rated short circuit current. Adopt the straight move Or isolating fracture and vacuum interrupter linkage . With function of manual and electric operation.
FZN25, FZRN25 special transmission structure design, arc extinguish chamber only withstand voltage in the moment of closing and breaking, small size, Light weight.
FZN25, FZRN25 can realize isolation fracture and arc extinguish chamber fracture disposable operating.
FZN25, FZRN25 has a grounding switch mutual linkage grounding valve between the static contact and mova conductive cylinder, ensures safety and convenient maintenance.
1. The ambient temperature: -25°C－＋40°C， alpine region, ;;.-40°C；
2. The altitude：≤1000M;
3. Relative humidity: daily average value is not greater than 95%, monthly average is not 9reater than 90%;
4. Earthquake intensity：≤ 8 degree;
5. The surrounding air is not corrosive and flammable gas, steam and other significant pollution;
6. Contamination grade: II class;
|Rated insulation level||1min frequency voltage||kV||lnterrupter Fracture30.on the ground,
white 42 .solation Fracture48
|Lightning impulse withstand voltage||kV||On the ground, white 75 solation Fracture85|
|Rated dynamic stability current (peak)||kA||50||—|
|4Sthe rmal current||kA||20||—|
|Rated active load breaking current||A||630||125|
|Rated closed-Loop break1ng current||A||630||125|
|Rated cable charging breaking current||A||10||10|
|Breaking load transformer||kV||1250||1250|
|Rated short-c1rcuit breaking current||kA||—||31.5|
|Rated transfercu rrent，rated current transfer||A||—||2000|
|Impact energy output||J||—||2-5|
|Rated short circuit making current||kA||50|
|Ground switch rated Dynamic current||kA||50|
|Grounding switch 2S thermal current||kA||20|
|Seconda ry Circu it Rated voltage||V||AC/CD220;110|
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