Test,to switch to 1.5 times through maximum rated current 220A,rated voltage switch 450V level,switch resistors according to actual use situation in tap-changer will install buried in the resistor thermocouple respectively and points below,switch 20mm not less than the actual operation according to the mechanism of uninterrupted speed continuous,6 times,each are switching to its highest temperature records,after the test should not be more than 300K temperature.
仅供参考