GE FGC TLE Series, Руководство пользователя

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Modifications reserved Page 78/90
GE_UPS_USM_TLE_SUL_40K_M15_1US_V010.docx User Manual
TLE Scalable Series 40 - 150 UL S1
7.3.2 Separate a UPS unit from the Redundant Parallel System
NOTE !
Make sure that SEM 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.
NOTE !
The Load is powered by the UPS Redundant Parallel System .
One UPS unit of the Parallel System has to be turned Off, while the Load is shared
between the other units supplying the parallel bus.
WARNING !
The control bus cable connecting J1A - J2A and J1B - J2B cannot be connected or
disconnected after the system has been powered on.
Initial status
:
Load supplied from all Inverters of the
Redundant Parallel System .
1. Disconnect the Inverter performing the “Inverter OFF” command on the Unit to separate .
1 - Perform the “Inverter OFF” command from the screen:
Commands 1 / Inverter /
OFF .
2 - Repeat the
“Inverter OFF”
command from the screen:
Commands 1 / Inverter /
OFF .
With
Redundant System
, performing the
“Inverter OFF”
command the
Inverter
shuts down and it will stay OFF.
Performing the
“Inverter OFF”
command the
Load
is transferred to the
Utility
and the
Inverter
remains
operating, it means the system is not redundant.
In this case is not possible to switch-OFF one unit without transferring the
Load
on
Utility
.
•
Load
supplied from
Inverter(s)
of the other Unit(s) of the
Parallel System.
Synoptic diagram of the unit to separate Synoptic diagram of other units
2. Open “Q1 - UPS Output switch” (Pos. O) on the Unit to separate.
•
LED ALARM
is lit.
Synoptic diagram of the unit to separate Synoptic diagram of other units
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