Critical Power
Modifications reserved
Page 81/91
GE_UPS_USM_TLE_SUL_M16_M50_2bU_V010.docx
User Manual
TLE Series 160 - 500 UL S2B
7.3.3
Reconnect a UPS unit to Redundant Parallel System
NOTE:
The Load is still powered by the other units supplying the parallel bus.
This UPS unit will be powered on and connected to the parallel bus in order to
share the Load with each other's.
The high speed bus cable connecting
J1A - J2A
and
J1B - J2B
in any case cannot be
connected or disconnected after the system has been powered on.
The bus terminals must be properly connected before powering the additional
unit.
If eBoost™ option is available, make sure that eBoost™ Operation Mode is disabled
before starting this procedure.
If IEMi option is available, make sure that IEMi Operation Mode is disabled before
starting this procedure.
Open the front door, of the Unit to reconnect, and make sure that:
•
All the
connections
to the input/output terminals or bus bars of the UPS have been made correctly.
•
The
protection panels
are fastened in their correct position.
•
The switches
Q1
and
CB3 (option)
are open (Pos. O)
and the
“External Battery Protections”
must be
open
(Pos. O).
1. Switch-ON the Utility voltage, on the Unit to reconnect, from the input distribution (both
Rectifier and bypass if separated).
At this stage the
Electronic Power Supply
and
Control Panel
are switched ON and the
Buzzer
sounds.
Press
“MUTE”
key to reset
Acoustical Alarm
.
LED ALARM
remains lit.
Synoptic diagram of the unit to reconnect
Synoptic diagram of other units
2. Close “Q1 - UPS Output switch” (Pos. I) on the Unit to reconnect
.
•
Rectifier
starts automatically.
LED 1 (Rectifier)
blinking, indicates
Soft-start
.
•
At the end of
Rectifier Soft-start
the
LED 1 (Rectifier)
remains lit.
Synoptic diagram of the unit to reconnect
Synoptic diagram of other units
Continue
→
