FZN21-12/T630-20 and FZN21-12(R)D/T125-31.5 series Indoor AC high voltage load switch-fuse combination units appliances for three-phase AC 12kV, 50Hz power system, or with the complete power distribution equipment and swtchgears, combined substation and other ancillary uses, is widely used in urban network construction and transformation engineering, industrial and mining enterprises, high-rise buildings and public facilities, can be used as ring power supply unit or terminal equipment, play power distribution, control and protection.
Technical performance of the products meet this standards:
- the IEC publication 60265-1/FDIS“High voltage switches, Part 1: Rated voltages below 1kV over 52kV high voltage load switch”,
- IEC60420“High Voltage AC load switch fuse combination units”;
- CB16926 “AC High-voltage load switch - fuse combination units”,
- GB3804“3-63kV AC high voltage switchesrequirement”.
This product has a breaking capacity, safety and reliability, long life, can operate frequent, compact structure, small size, light weight, the basic no need to maintain. Breaking with rated current, overload current (FZRN21-12D/T125-31.5 can short-circuit breaking current) and to prevent equipment missing running ability to switch a visible fracture of isolation, with combined installed capacity of the ground with the relevant switches and electrical spring agencies, to remote control.
Environmental conditions:
- ambient air temperature: +40° C -10° C;
- the altitude does not exceed 1000m;
- relative humidity: not more than 90% of the indoor field (+25 ° C);
- non-conductive dust environment;
- no destruction of objects of metal and insulation corrosive gases;
- severe vibration and shock;
- no combustion and explosion hazardous environment.
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