Modifications reserved
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OPM_LPS_33E_60K_M12_2GB_V010.doc
Operating Manual
LP 33 Series 60-80-100-120 kVA / S2
8.1.3 From Manual Bypass Q2 to normal function VFI
This procedure presupposes that the
load
is powered by the
manual bypass
switch, and:
•
The
inverter
is switched OFF;
•
The
manual bypas
s switch
Q2
is closed (Pos. I);
•
The output switch
Q1
is open (Pos. 0);
•
The
external battery fuses
are removed;
•
LED Alarm
blinks.
NOTE !
This procedure must not be performed if the UPS is used as
frequency converter
.
1. Insert the external battery fuses
.
In case of GE battery cabinet: insert the fuses in their place and close fully the cover of fuse-
holder by using correctly the handle.
2.
Close the output switch Q1 (Pos. I).
Load
is now supplied parallel through
automatic bypass
and
manual bypass Q2
.
The
synoptic diagram
must display the status
“
LOAD SUPPLIED BY
AUTOMATIC BYPASS AND MANUAL BYPASS Q2
”
.
`
Home\Commands
COMMANDS
RESET TOTAL OFF
REQUEST TOTAL OFF
3.
Only in case it has been previously activated, restore the
command
“Total Off”
by entering the screen:
COMMANDS/
RESET TOTAL OFF
V
`
Home\Meter
BOOSTER
f :
50.0
Hz
L1 :
397
V
L2 :
395
V
L3 :
393
V
Vp :
400
V
Vn :
400
V
4.
Open the manual bypass switch Q2 (Pos. 0).
The
load
is supplied by the mains through the
automatic bypass
.
Verify, selecting the screen
METERING/BOOSTER/
Vp
and
Vn
, that the
booster voltage has reached about
400 Vdc
.
5. Insert the inverter by pressing
“
Inverter ON
”
( I ) key.
Some seconds later the
load
will be transferred on
inverter
.
LED Alarm
turn Off and the
LED Operation
must be lit.
The
synoptic diagram
must display the status
“
LOAD SUPPLIED BY
INVERTER
”
.
END OF PROCEDURE