26
Also, if the protection panel has manual bypass switch,
remove the mechanical lock and turn the switch "On"
(BYPASS).
In this case and in this case only, turn the output
switch/es from distribution panel to "Off", depending
if there is only one UPS or a system with "N" equipments
in parallel.
The UPS is completely shutdown and inactive and loads
are supplied through the manual bypass of the distribu-
tion panel.
6.6.3. Transference to normal mode.
• The procedure to transfer from maintenance bypass to
normal mode, is the same for a single UPS or parallel system,
less the quantity of actions to make:
If the protection panel has manual bypass switch:
–
Turn the output protection/s of the distribution panel to
"On" previously, depending if there is a single UPS or
a system with "N" equipments in parallel.
If the manual bypass switch is manipulated be-
fore turning "On" the output switch/es of the
protection panel, the loads will not be fed.
–
Turn the manual bypass switch of the panel to "Off"
(UPS) and put the mechanical lock.
To avoid wrong manoeuvring the mechanical
lock has to be fit, otherwise the equipment and
loads are exposed to serious damages, even the de-
struction of both or fire.
Turn input and bypass circuit breaker protections of the
equipment (TWIN/3 PRO > 10 kVA) to "On".
In parallel systems, proceed in the same way in all the
equipments over the same protections.
Move the manual bypass switch to position "UPS" and
put the protection cover the manual switch back.
Put back the protection cover of the manual by-
pass switch of all equipments, also check the
torque of the fixing screws, otherwise any of the limit con-
tacts could be activated and the manual bypass too.
In parallel systems proceed with the same operations in
each equipment.
For a single equipment.
–
Press over the start up key for more than 1 second,
the acoustic alarm will beep for 1 sec. and the UPS
will start up.
Load/s are protected by the equipment again.
For a parallel system.
–
Press over the start up key for more than 1 second
in any of the UPSs and all of them will start up, finally
the parallel system will be on "Normal mode”
Load/s are protected by the parallel system again.
USER MANUAL
Summary of Contents for UPS SLC TWIN PRO series
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