NETYS RT 5 - 7 - 9 - 11 kVA - 551570A - SOCOMEC
82
EN
Under the cover plate, there is a manual bypass detector (see Figure 10-
19) that will be automatically activated to send the UPS a message to
transfer to bypass mode once the cover plate is removed.
TO UPS PARALLELTO UPS PARALLEL
TO UPS-1 OUTPUT
BYPASS MODE
UPS MODE
UPS-2UPS-1
OUTPUT BREAKERBYPASS BREAKER
TO UPS-1 INPUT
TO UPS-2 OUTPUT
TO UPS-2 INPUT
N L
N L
N L
N L
INPUT
OUTPUT
(Figure 10-19)
4
After you conrm that both of UPS1 and UPS2 are running in bypass mode,
switch the Manual Bypass’ BYPASS BRAKER to the ON position. The ON/ OFF
printing is marked on the BYPASS BREAKER (see Figure 10-20). Now, the
connected loads are being powered by the utility power.
TO UPS PARALLELTO UPS PARALLEL
N(L2) L(L1)
N(L2) L(L1)
BYPASS MODE
UPS MODE
UPS-2UPS-1
OUTPUT BREAKERBYPASS BREAKER
OFF
ON
Bypass Breaker
TO UPS-1 INPUT
TO UPS-2 OUTPUT
TO UPS-2 INPUT
INPUTOUTPUT
N L
N L
(Figure 10-20)
If there is a power interruption while the PMB is in bypass mode, the
connected loads won’t be protected.
5
Turn off the UPS1’s INPUT BREAKER.
6
Turn off the UPS2’s INPUT BREAKER.
7
Turn off the circuit breaker on each connected external battery pack.
8
Turn off the Manual Bypass’ UPS-1 OUTPUT BREAKER.
9
Turn off the Manual Bypass’ UPS-2 OUTPUT BREAKER.
10
Disconnect the battery cables from the UPS1 and the external battery pack(s).
11
Disconnect the battery cables from the UPS2 and the external battery pack(s).
12
Disconnect the power cables from the ‘TO UPS-1 INPUT’ and ‘TO UPS-1
OUTPUT’ terminals on the Manual Bypass.
13
Disconnect the power cables from the ‘TO UPS-2 INPUT’ and ‘TO UPS-2
OUTPUT’ terminals on the Manual Bypass.
14
Disconnect all of the communication cables from the rear panel of the UPS1 and UPS2.
15
Now, remove UPS1, UPS2 and the external battery pack(s) and perform
maintenance.
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