Liebert 130 kVA - Manual (Page 58)

User Manual
Hipulse - Single Phase ‘1+N’ UPS System 130 kVA - 110V
38
5.5 Procedure for Switching the UPS ON from a Maintenance
Power condition.
Follow the procedure for 'UPS startup: without interrupting power to the load' referring
to the paragraph 5.2, start from point number 2.
5.6 Procedure for completely powering down the UPS
This procedure should be followed to completely power down the UPS and LOAD. All
power switches, isolators and circuit breakers will be opened and there will be no load
power.
CAUTION
The following procedure will switch off all power to the load
equipment.
1. Open the Battery circuit breaker and the Rectifier
input power switch Q1.
The Module Mimic indicator Load on Inverter (5)
will extinguish and the Load on Bypass indicator (6)
will flash amber. The Battery not available indicator
(3) will light amber and the battery bargraph LED’s
will all extinguish.
The display window will show messages reflecting
the actions taken (i.e. Load on Bypass; Battery
Breaker open; Rect. Switch open; etc).
Note: In ECOMODE the message 'LOAD ON BYPASS'
will not appear.
2. Open the Output power switch Q4 and the
bypass power switch Q2.
All operator LED indications and messages will
extinguish as the mains driven internal power
supplies decay.
3. To completely isolate the UPS from the a.c.
supplies, the main external power input isolator
(both isolators, where separate supplies are
provided for rectifier and bypass) should be
opened.
On the primary input distribution panel, which is often
located distant from the UPS area, a label should be
posted advising service personnel that the UPS circuit is
under maintenance.
LOAD ON BYPASS
BATTERY C.B. OPEN
RECTIF. SWITCH OPEN
hh.mm.ss dd.mm.yy LOAD ON BYPASS
BATTERY C.B. OPEN
RECTIF. SWITCH OPEN
hh.mm.ss dd.mm.yy