Salicru SLC ADAPT User Manual - page 17
17
•
Start up the UPS according to the procedure stated in the
«User’s, installation and start up manual» of the equipment.
The bypass panel supplies voltage to the terminals labelled
as «LOADS OUTPUT».
UPS INPUT
STATIC BYPASS
MANUAL BYPASS
UPS OUTPUT
On
On
Off +
On
Fig. 11. Position of the bypass panel switches in «Normal
operating» (with one UPS only).
•
Start up the loads, they are supplied from the output termi-
nals of the panel, through the UPS.
6.2.2. Manual bypass panels with two or more UPS’s.
UPS 1 INPUT
UPS 1 STATIC BYPASS
MANUAL BYPASS
UPS 1 OUTPUT
On
On
Off +
On
•••
UPS N INPUT
On
•••
UPS N STATIC BYPASS
On
UPS N OUTPUT
On
•••
Fig. 12. Position of the bypass panel switches in «Normal
operating» (with several UPS’s).
•
Turn the bypass panel switches «UPS 1 INPUT» to «UPS
N INPUT» and «UPS 1 OUTPUT» to «UPS N OUTPUT» to
«On». If the separate bypass line is also available (-B), turn
the «UPS 1 STATIC BYPASS» to «UPS N STATIC BYPASS»
switches from panel to «On» too. In the illustration of Fig.
12, it is shown the position of switches once the manoeu-
vring has been done.
•
Start up all the UPS’s according to the procedure stated in
the «User’s, installation and start up manual» of the equip-
ment. The bypass panel supplies voltage to the terminals
labelled as «LOADS OUTPUT».
•
Start up the loads, they are supplied from the output termi-
nals of the panel, through the UPS’s.
6.3. SHIFTING FROM «NORMAL OPERATING» (LOADS
SUPPLIED BY THE UPS OR UPS’S) TO «MAINTENANCE
OPERATING» (LOADS SUPPLIED THROUGH THE
MANUAL BYPASS).
6.3.1. Manual bypass panels with one UPS only.
•
Put the UPS
on bypass (inverter «Off»)
, according to the
procedure stated in the «User’s, installation and start up
manual» of the UPS.
It is essential
to shutdown the inverter
of the UPS
before proceeding, otherwise a short-circuit at its
output will be made with unexpected and unintended out-
comes for any part of the set (UPS, panel and loads).
•
Remove the mechanical lock from the switch labelled as
«MANUAL BYPASS» in the bypass panel and turn it «On».
Keep the mechanical lock in a safe place, because it will
have to put it back, once the maintenance or fixing tasks
have been finished.
•
Manual bypass panels with isolation transformer, the loads
will be supplied with a clean and/or attenuated voltage
from electrical noises.
•
Turn «UPS INPUT» and «UPS OUTPUT» switches from bypass
panel to «Off». In case the separate bypass line (-B) was avail-
able, turn the «STATIC BYPASS» switch of the bypass panel to
«Off» too. In the illustration of Fig. 13, it is shown the position
of the switches once the manoeuvring has been finished.
•
Loads are supplied by mains directly through the manual
bypass panel and UPS is completely shutdown, so it is
ready to be serviced for a preventive maintenance, fixing
or replacement for another equipment with the same speci-
fications.
UPS INPUT
STATIC BYPASS
MANUAL BYPASS
UPS OUTPUT
Off
Off
On +
Off
Fig. 13. Position of the bypass panel switches in «mainte-
nance operating» (with one UPS only).
•
In case of faulty UPS, it can also be removed and sent to the
factory for its fixing. Nevertheless it is better not do it, because
loads would be connected to mains directly and so exposed to
mains fluctuations.
Even, if this alternative is going to be done, it is manda-
tory to remove any cable bundle connected to the
panel, which has at its opposite end the cables bare from
isolation, resulting in a risk of electrocution or short-circuit in
case of turning on any of the panel switches.
USER'S MANUAL