Parallel redundant & power system UPS 60…800kVA FXS – Operating manual
Sistema parallelo ridondante e di potenza UPS 60…800kVA FXS – Manuale operativo
26 of 79
JUD413937
Rev.A JSE414215 07/06/11
7.
START-UP
7.1
CASE OF 2 UPS – DIRECT START-UP
When the system is comprised of two UPS, it is possible to start up the system
directly. To proceed with the start up of a UPS, close the RCB switch and follow the
guided procedures on the display. After this, the other UPS may be started up normally,
closing the RCB and following the procedure on the display.
7.2
CASE OF 2 UPS – MANUAL BYPASS START-UP
In the case of two UPS, it is also possible to start up the parallel system starting with
the manual bypass.
If the UPS are already in the Manual Bypass, verify the first two points.
The procedure is as follows:
The UPS are not supplied with all switches opened.
o
Close the Manual Bypass MBCB of both UPS
o
Switch both Bypass Switches to the BYPASS position
o
Close RCB on both of the UPS
WARNING
When “OPEN ALL MBCB” is requested, all the MBCB of all the UPS and/or MBCB
external cabinets must be opened.
o
Follow the start up instructions on the front panel proceeding for each UPS until
the “MOVE BYPASS SWITCH” appears.
o
Move the Bypass Switch, the UPS feeds the load.
o
Move the Bypass Switch, the UPS feeds the parallel and the “START-UP
FINISHED” message appears.
7.3
CASE OF N UPS – START-UP FROM MANUAL BYPASS
When there UPS are more than two UPS it is possible to start up the parallel system
only by starting from the manual bypass. This serves to insert all the ups onto the load
bar contemporaneously.
If the UPS are already in Manual Bypass control the first two points.
The procedure is as follows:
The UPS are not supplied with all switches opened.
o
Close the Manual Bypass MBCB on all of the UPS
o
Switch all the Bypass Switches to BYPASS
o
Close RCB on all of the UPS
WARNING
When “OPEN ALL MBCB” is requested, all the MBCB of all the UPS and/or MBCB
on the external cabinets must be opened.