Modifications reserved
Page 68/99
OPM_SPE_XXX_10K_40K_8GB_V020.doc
Operating Manual
SitePro 10-15-20-30-40 kVA / S8
8.1.2 UPS shutdown with load transfer on manual bypass Q2
NOTE !
Not following this procedure can cause protected loads to shut down!
Never close or open either
Q1
or
Q2
with the inverter running!
Initial situation: the load is powered by the
inverter
.
The complete UPS system has to be turned OFF, while providing the load power by
mains through the manual bypass switch
Q2
.
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
LCD screen
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. Close the manual bypass switch Q2 (Pos. I).
LED 9 (manual bypass Q2)
is lit.
Load
is now supplied parallel through
automatic bypass
and
manual bypass Q2
.
3. Open the output switch Q1 (Pos. 0).
The
load
is now supplied only through the
manual bypass Q2
.
4. Press “Load Off” key.
The output contactor
K6
open and
LED 8 (load on automatic bypass)
is Off.
5. Open the input rectifier switch Q4 (Pos. 0).
The
acoustical alarm
is activated, press
“MUTE”
key to reset it.
6. 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.
The
load
is now powered directly by
mains
through the
MANUAL BYPASS Q2
.
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.