GE LP 33 Series - EPO (EMERGENCY POWER OFF)

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OPM_LPS_33E_60K_M12_2GB_V010.doc Operating Manual LP 33 Series 60-80-100-120 kVA / S2
9.3 EPO (EMERGENCY POWER OFF)
WARNING !
Connections described in this chapter shall be done only by a trained person or
SERVICE ENGINEERS.
An external Emergency switch (NC - Normally
Closed voltage-free contact) can be connected
on terminals X7 / 1, 2 of the P1 – Mainboard.
NOTE !
Check that the Jumper JP5 is
not installed on the P1 -
Control board.
In a Parallel System a separate
NC (Normally Closed) contact
must be connected individually
to each unit.
L
P
S
3
3
_
0
6
0
-
0
8
0
_
S
2
_
U
P
S
+
X
7
+
J
P
5
_
0
1
OFF
ON
OFF
ON
12
X7
P1 - Control board
JP5
Fig. 9.3-1 LP 33 Series 60 - 80 kVA - Terminals X7 – EPO
Q2
ON
OFF
Q2
ON
OFF
12
X7
P1 - Control board
JP5
L
P
S
3
3
_
1
0
0
-
1
2
0
_
S
2
_
U
P
S
+
X
7
+
J
P
5
_
0
1
Fig. 9.3-2 LP 33 Series 100 - 120 kVA - Terminals X7 - EPO
When activated, this switch causes the immediate shutdown of booster, battery-charger, inverter; and
the contactors K4, K6 and K7.
NOTE !
This procedure could imply a load shutdown.
When the EPO has been activated, the system must be restored as follows:
• Press the push-button EPO (contact on X7 / 1, 2 is closed again).
• Press the key “O” (Inverter OFF – see Section 6.2) on the control panel.
• Press the key “I” (Inverter ON – see Section 6.2) on the control panel.
In case of a Parallel System press the key “O” (Inverter OFF) on the control panel of
each unit connected on the parallel bus and having its output switch Q1 closed.