Modifications reserved
Page 70/99
OPM_SPE_XXX_10K_40K_8GB_V020.doc
Operating Manual
SitePro 10-15-20-30-40 kVA / S8
8.1.4 Complete UPS shutdown
NOTE !
Follow this procedure only in case the UPS system and the load must be completely
powered-down.
With the UPS in normal operation and the
inverter
supplying the
load
,
the switches
Q1
and
Q4
are
closed (Pos. I),
Q2
is open (Pos. O),
and the
battery fuses F8 – F9
are inserted.
The
synoptic diagram
must display the status
“
LOAD
SUPPLIED BY INVERTER
”
.
1. Disconnect the inverter by pressing
“
Inverter OFF
”
( O ) key and hold until the LED Inverter (5)
turns OFF.
Load
is transferred to
mains
by
automatic bypass
.
LED Alarm
is lit and the
LED Operation
is Off.
The
synoptic diagram
must display the status
“
LOAD SUPPLIED
BY AUTOMATIC BYPASS
”
.
2 Press
“
Load Off” key.
The output contactor K6 open and the UPS output will be powered down.
3. Open the input rectifier switch Q4 (Pos. 0).
LED Alarm
blinks and the
acoustical alarm
is activated, press
“MUTE”
key to reset it.
LED Alarm
remains lit.
4. Open the output switch Q1 (Pos. 0).
5. Disconnect the battery removing the battery fuses F8 – F9.
The electronic boards and the control panel are still powered from AC power supply through the plug
X8
on
the
”P1 - Power Interface”
(Warning! This board will remain powered from the mains throughout this
procedure!).
The
acoustical alarm
is activated, press
“MUTE”
key to reset it.
6.
Disconnect the mains from the input distribution only when the DC-Link voltage results to be
below 20 Vdc (see screen METER / BATTERY / V).
The UPS is now voltage free, except for battery voltage in case the battery is integrated in the UPS cabinet.
All the
LEDs
and the
LCD display
must be OFF.
WARNING !
It will take 5 minutes for the DC capacitors to discharge.
Open only the front door, do not open any other part of the UPS.