What is the UPS power supply and why does the front of the switch total trip?
The previous UPS cannot be installed leakage protection device is a weakness of the UPS industry, is still not a manufacturer can be solved, popular to say UPS is itself a leakage device, because when UPS online work should be filtered to the rectifier, voltage when some clutter, small current will release through the bottom line this will cause misoperation off leakage protector. The installation of leakage protection device in front of the UPS must not.
General settings for current leakage protection device 60MA, larger 300MA, is very easy to cause the error protection of leakage protection. Therefore, the general UPS front is not install leakage protection so that UPS itself is not with leakage protection.
General UPS in order to filter out common mode interference, L, N line to the ground have filter circuit, UPS work, because filter circuit capacitor to PE role, it is easy to cause L N line current is unequal
