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Operation 59
From the module Master Me nu, move the highlighted cursor to START-UP PROCEDURES. Press the Select
pad and the module Start-Up Procedures screen is displayed.
This two-page screen contains the steps you must follow to start-up each UPS system. The instructions are listed
so you can review them prior to performing the start-up.
Figure 38 Module Start- Up Procedures Screen
Prior to this procedure, supply power to the critical load through the bypass line (at the SCC). When you close
the UPS module input breaker, power is provided to the UPS rectifier. The module DC bus voltage ramps up to
the nominal battery voltage and the UPS inverter turns on when the DC bus reaches the proper voltage. You can
then close the battery circuit breaker (MBD) and the UPS module output circuit breaker to place the UPS module
on-line.
Refer to 3.3.1 - Start-Up Procedure for more details.
START-UP PROCEDURES
1. Verifythatthe control poweris applied tothe system control cabinet(checkthe display
onthe system control cabinet).
2. Wait approximatelytwo(2)minutes beforeattempting anyother action .
3. S elect "SYSTEMCONFIGURATION"screento verifythat thecorrect model is
displayed.
4. Select "WALK-IN"screenand dothe following:
a) Close module input circuit breaker.Verifythatthe DCvoltage baron
thedisplay beginsto graduallymoveto theright andtheACinput
currentbars donot moveto theright morethan 10%(40%formodules
withinputfilters)after thetransformer inrushhas subsided.
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MASTERMENU
DOWN :
SELECT :
START-UP PROCEDURES (Cont'd)
b) Verifythat theoutputvoltagebar moves tothe right afterthe DC
bus barhas reached the90%point.Both barsshouldsettle near
their respecti ve100%levels.
c) Ifanything happens onthedisplay notmentionedin(a)or (b),
immediatelyopen themodule inputcircuit breakerand investigate.
5. Ifstep4 is successful, select "MONITOR/MIMIC"screenand verifymodule
DCbus andoutput voltages areat propernominal level.Ifso, close
modulebatterycircuit breaker.
6. Ifno alarms arepresent onthe "MONITOR/MIMIC"screen,the module maybe
placed online byclosingthe module outputbreaker.
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MASTERMENU
UP :
SELECT :
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