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Answer Posted / saeid
On line UPS connection to the user is automqatically, so
there is an electical interlock between it and power
network . The logic of this inter lock is when power
network is on the UPS is diconnecterd from the user and
when power network is off, the UPS become connecterd to the
user.
In addition, on line UPS are used supply some important
equipment in some applications permanently such as process
computer, PLC or realys in industrial plants.
Off line UPS connection to the user is manually. So when
the power network is off, somebody has to connect the UPS
to the user by closing a breaker or contactor.
| Is This Answer Correct ? | 13 Yes | 33 No |
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