Switching Procedure To Manual Bypass - LEGRAND KEOR HP Series Installation And Start-Up Manual

Installation and start-up of UPS Keor Hp 60-160kVA
Installation et démarrage de l'UPS Keor Hp 60-160 kVA
Installazione e avviamento UPS Keor Hp 60-160kVA
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.
ACTION
No.
1
Move the
bypass
selector SW
to BYPASS
2
Close MBCB
3 Open BCB
4 Open RCB
5 Open OCB
6 Open SBCB
7
LCD DISPLAY
A30 GENERAL ALARM
A30 GENERAL ALARM
A30 GENERAL ALARM
A30 GENERAL ALARM
A30 GENERAL ALARM
A30 GENERAL ALARM
BLANK
OPERATING CHECKS
The load is transferred to the bypass
line. LED #5 off, LED #6 lit orange.
The inverter is switched off. The load is
supplied by the input mains through the
manual bypass switch.
bypass switch is still closed. Led #8 lit
orange.
The battery is disconnected from the DC
bus bar. Led #4 red flashing.
The supply input is opened; the rectifier
shuts down. LED #1 off.
The load remains fed by the manual
bypass switch. LED #8 off.
The bypass line is disconnected. The
display goes out.
The load is supplied directly by the
mains through the manual bypass
switch. The UPS is isolated.
OMD10073 REV. D
The static
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