Earth Bond/
Earth
Resistance
test
Test current>200mA (R < 2Ω)
If 0.01~0.1Ω passed, display “√”
If 0.1~0.5Ω passed, display “√” and
flash
If 0.51~19.9 failed, display“×”
Test voltage 5VDC, test time 5S
Insulation
resistance test
Test current> 1mA (R = 500KΩ)
Test time 5S
Test current> 2mA (R = 1KΩ), test
time 5S
If ≥1MΩ passed, display “√”
If ≥2MΩ passed, display “√”
If ≥1MΩ passed, display “√”
Test voltage 50V rms, frequency
50Hz
Test time 5S
If 0.1~0.75mA passed, display “√”
If 0.75~3.5mA passed, display “√” and
flash
If 3.5~10.50mA failed, display “×”
If 0.1~0.25mA passed, display “√”
If 0.25~10.50mA failed, display “×”