Working Principle; In Ac Mode - Ewent EW3940 Manual De Instrucciones

Place with very high temperature or very low temperature(above 42℃
o
or below
0℃) or high humidity(above 90％) ；
o
Place with direct sunlight or near heater；
o
Place with strenuous vibration；
o
Outside
o
•
Please use dry powder fire extinguisher in case of fire; it is forbidden to use fluid
fire extinguisher because it will cause electric shock.
•
Please put the socket near the UPS, in this way, it is convenient to disconnect
the socket and cut off power in case of emergency.
Attention! Please ground the UPS for safety purpose

3.0 Working Principle

3.1 In AC mode

When UPS is in normal working mode, AC goes through the filter and the harmful
waves are filtered. After that, AC charges the battery and meanwhile, passes UPS
AVR and the filter and provide power for the equipment.
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ENGLISH