ZW32-12/24 Permanent Magnet Vacuum Circuit Breaker includes two parts: permanent structure with special design and high Reliable MGK FTU. The device mainly used in the middle-high voltage grid with the function of break-close load current, overload current, short circuit current. What’s more , it can realize the 0-3 times auto reclosing function.
Free maintenance in the whole period;
Have high mechanical life time and power life time;
Little volume, lower weight, easy installation;
Have standard relay protection and auto reclosing function.
Rated short-circuit current for opening or closing (peak number)
Rated peak withstand current
4s short-time withstand current
Rated operation cycle
Number of times for rated short-circuit current on or off
Permanent-magnet device control voltage
1.Insulation test: Main electricity loop insulation is stable and reliable.
2.Mechanical property and environmental testing: mechanical property is stable and reliable.
3.Temperature rise test: Vacuum interrupter with ultra-low resistance, contacting resistance is low.
4.Testing for Turning on or off and opening or closing on rated short circuit : High vacuum breaking ability is great, insulation recovery is fast, breaker finished short-circuit current test for 30 times .
5.Testing for short-time withstand current and peak withstand current: test for 4 seconds withstand current and short-time peak withstand current, power receiving ability on main loop is great .
6.Testing for life : 30000 times finished on State new standard M2 grade