color
white grey or as per customer
insulation resistance
>100MΩ
Humidity
≤93%RH,Non-Dewfall
Insulation strength
Input and auxiliary power supply AC2.5kV,1min
Surge immunity
4 Grade (GB/T17626.5)
Auxiliary power supply
AC220V,50Hz
Display mode
4 bit digital tube LED display, automatic decimal point shift
Data update
3 times/second