Filter
Top Products
34001813EN/AE - Page 43
3. Operation
3.3 Shutting down a parallel configuration
3.4 Restarting a parallel configuration
Check that switches Q4S (9) and Q5N (11) are closed. If this is the case, continue with this procedure, otherwise refer
to paragraph 4.4 "Return to the Normal position, Parallel UPS...".
1 - Press a button on each unit to exit sleep mode.
2 - Press the OFF button (38) on each unit for 3 seconds.
The load is no longer protected by the UPSs. It is supplied via the
bypass.
3 - Set the battery circuit breaker QF1 (13) in each UPS unit to the OFF
position (or trip the battery circuit breakers in the auxiliary cabinets if
applicable).
4 - Set the input switch Q1 (8) in each UPS unit to the OFF position.
The charger no longer operates to keep the batteries fully charged.
5 - Open the upstream circuit-breakers of Normal AC source and Bypass
AC source to completely power off the installation.
1 - Check that the Bypass AC source input switch Q4S in the external
bypass cabinet is closed.
2 - Check that the output switch Q5N in the external bypass cabinet is
closed.
3 - Check that the bypass switch Q3BP in the external bypass cabinet is
open.
Then carry out steps 4 to 6 below on all the UPS units.
4 - Set the Normal AC source input switch Q1 (8) to the ON position.
5 - Wait until the end of the start sequence.
6 - Set the battery circuit breaker QF1 (13) (or the battery circuit breakers
in the auxiliary cabinets) to the ON position.
The UPS units start automatically. On each unit, LEDs (32) and (33) go
OFF and LED (31) goes ON.
The load is protected by the UPSs.
If LED (31) remains OFF, press the ON button (37) on each UPS unit (the
UPS is in manual start mode) and confirm if necessary by pressing the
function key (35) marked
©.
If LED (31) still remains OFF and either of LEDs (32) or (33) is ON, a fault
has occurred (see section 4.1).
IO
3s
38
Q1 Q4S Q3BP Q5N
QF1
13
8
Q1 Q4S Q3BP Q5N
QF1
13
8
9
11
IO
3s
?
~
37
31 32 33
35