Modifications reserved
Page 47/86
OPM_SGS_USM_M40_M50_1US_V020.doc
Operating Manual
SG Series 400 & 500 kVA
7.1.6 Restore to normal operation after
EPO (Emergency Power Off)
UPS panel after activation of
EPO
(Emergency Power Off)
with
Utility
not
available, i.e. complete shutdown of
the UPS.
In this case wait until
Utility
is again
available, then proceed to restart the
UPS as described below. Points 1
through 3.
UPS panel after activation of
EPO (Emergency
Power Off)
with
Utility
available
.
•
All
Contacts
are open;
•
Rectifier, Inverter and Static-Switch
shutdown.
The Battery remains connected to the UPS in case of configuration without external
Battery Breaker Release!
1. Reset the EPO (Emergency Power Off)
button
.
•
Press
mute
, to reset
alarm and buzzer
.
2. Press
“
inverter off
”
( O ) key
.
•
Output connects to
Bypass Utility
.
•
Rectifier
starts with blinking LED.
•
At the end of Soft-start the
LED
remains lit.
•
The
LCD screen
shows:
“LOAD ON BYPASS”.
Proceed with step 3 only, when the LED 3
remains constantly lit.
3. Connect the Battery to the UPS by closing
the external Battery Breaker Release
.
4. Press
“
inverter on
”
( I ) key
.
•
Inverter
starts with blinking
LED
.
•
At the end of Soft-start the
LED
remains lit.
•
Automatic transfer from
Bypass
to
Inverter
.
•
UPS output
LED
and
LCD screen
indicate
both:
“LOAD ON INVERTER”.
END OF PROCEDURE
LED 3