1.Only authorized professionals are allowed to open the UPS chassis! The UPS input and output voltage is high risk. Contact the high voltage will bring life risk.
The UPS input and output voltage is high risk.
to ensure that the input is turned off and in safe condition.
Even if all external power is disconnected.
UPS internal capacitor exists residual electric charge
output terminal blocks exists high voltage which may endanger life.
So it needs to put the UPS aside long time(≥10 min),
So it needs to put the UPS aside long time(≥10 min), the UPS chassis could be opened after charge released.