Borri ASD91, Operating Manual

Page: 74 / 226

Installation and start-up of UPS B8000FXS 10-60kVA
Installazione e avviamento UPS B8000FXS 10-60kVA
56 OMD91050 REV. G
5.5 SWITCHING PROCEDURE TO MANUAL BYPASS
The load is transferred to Manual Bypass with no interruption of supply to the loads. In this
configuration, the system can be restarted via the return procedure from load on manual
bypass, without the need to de-energize the loads.
Manual bypass
To perform the switching procedure correctly, make sure no alarms are present on
the system.
During Manual Bypass the load is supplied directly by the input mains, therefore
continuous supply cannot be guaranteed to the loads.
No.
ACTION LCD DISPLAY OPERATING CHECKS
1 Move the
bypass
selector SW
to BYPASS
A30 GENERAL ALARM The load is transferred to the bypass
line. LED #5 off, LED #6 lit orange.
2 Close MBCB A30 GENERAL ALARM The inverter is switched off. The load is
supplied by the input mains through the
manual bypass switch. The static
bypass switch is still closed. Led #8 lit
orange.
3 Open BCB A30 GENERAL ALARM The battery is disconnected from the DC
bus bar. Led #4 red flashing.
4 Open RCB A30 GENERAL ALARM The supply input is opened; the rectifier
shuts down. LED #1 off.
5 Open OCB A30 GENERAL ALARM The load remains fed by the manual
bypass switch. LED #8 off.
6 Open SBCB A30 GENERAL ALARM The bypass line is disconnected. The
display goes out.
7 BLANK The load is supplied directly by the
mains through the manual bypass
switch. The UPS is isolated.
Only for B8033FXS 30...60kVA with back-feed protection option:
Open F12 Sectioning phase R - Power supply
contactor back-feed / relay contact RL1
PB244 back-panel board