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34006452EN/AC - Page 29
Shutdown
Shutdown of an rectifier/charger
5.2 System shutdown
Single-unit or single modular UPS
Except in frequency converters without a battery, it is recommended not to stop the rectifier/charger because the battery will
no longer be charged. Except in the case of a test of the inverter on battery power, the rectifier/charger should be shutdown
after the inverter to avoid unnecessary battery discharge.
Proceed in the following order:
– open battery circuit breaker QF1;
– open Mains 1 input switch Q1;
– the rectifier/charger shuts down,
– all control panel lights go off because the device is powered down.
Note:
In a frequency converter without a battery, rectifier/charger shutdown automatically results in inverter shutdown.
– shutdown the inverter (see the "shutdown of a module" section);
– carry out operations in the following order:
– close maintenance bypass switch Q3BP:
– open output switch Q5N:
– open Mains 2 input switch Q4S:
– open battery circuit breaker QF1:
– open Mains 1 input switch Q1:
– the UPS is powered down (except the Mains cables upstream from switches Q1, Q4S and Q3BP) and the load is supplied
by Mains 2. All the lights on the control panel are off. A full powering down requires load shutdown and the opening of the
upstream protection devices on Mains 1 and 2.
Q1 Q4S Q3BP Q5N
OFF
ON
(0)
(I)
ON
(I)
ON
(I)
ON
(I)
Q1 Q4S Q3BP Q5N
OFF
ON
(0)
(I)
ON
(I)
ON
(I)
ON
(I)
Q1 Q4S Q3BP Q5N
ON
OFF
(I)
(0)
ON
(I)
ON
(I)
OFF
(0)
QF1
OFF
ON
(0)
(I)
Q1 Q4S Q3BP Q5N
ON
OFF
(I)
(0)
OFF
(0)
ON
(I)
OFF
(0)