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◆ 10.2 Protective Functions
(1) Overload Protection
If the UPS outputs are overloaded by exceeding the current capacity of the inverter,
such as when a computer system boots up, the output selector switch automatically
switches the source of AC power from the inverter to the bypass source without
interruption. After a certain period of time has elapsed, the source of AC power is
switched back to the inverter without interruption (auto return).
AC power
Converter
source
(commercial)
Bypass Supply Time
(2) Inverter Failure
If a fault occurs in an inverter, the faulty unit is automatically isolated as inverter
supply continues from the normal unit(s). The (red) ALARM indicator on the faulty
unit lights, and its beeper sounds. Press
At that time, operation is as follows, depending on the size of the load current.
Case 1. If the load current does not exceed the capacity of the remaining normal
Case 2. If the load current exceeds the capacity of the remaining normal units,
Rectifier
Battery
Power supply route in overload state
Alternately
Indicator status during overload
units, inverter supply continues.
operation alternates back and forth (auto-return) between inverter and
bypass supply.
Inverter
Charger
Inverter Supply Time
CLEAR
to silence the beeper.
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Output
Selector
Output
switch
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