Vertiv Liebert Trinergy Cube, User Manual

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Liebert Trinergy™ Cube UPS SWITCHING PROCEDURES
Page 18 User Manual - 10H52243UM60 - rev. 6 - 12/2020
4.3. Procedure 3: TRANSFER FROM NORMAL MODE TO MAINTENANCE BYPASS MODE
Starting from the UPS in normal operation mode, this procedure explains how to transfer the load to
maintenance bypass and shut down the UPS.
4.4. Procedure 4: TRANSFER FROM MAINTENANCE BYPASS MODE TO NORMAL MODE
Starting with the UPS in the maintenance bypass mode, this procedure explains how to transfer the load
to normal mode.
SINGLE UPS TURN-OFF PROCEDURE
STEP
ACTION STATUS
1 Turn inverter OFF
By pressing the stop button icon
command on the TS-LCD
2
Switch QS9_n on each Core OFF and Open the
external battery disconnector
3
Switch QS3 to ON position Only in case of BOX in version FULL
In case of UPS w/o QS3, close the external
maintenance bypass switch In case of BOX in version value or
empty
4 Switch QS4 on Box to OFF position Only in case of BOX in version FULL
5 Switch QS4_n on each Core to OFF position Fans on each Core OFF
6 Switch QS1-n on each Core to OFF position
7 Switch QS2 to OFF position
8 Switch QS44 to OFF position Fans on the BOX OFF
9 Switch QS1 on Box to OFF position Only in case of BOX in version FULL
SINGLE UPS TURN ON PROCEDURE
STEP
ACTION STATUS
1 Energize the UPS by closing the upstream
breakers (mains and bypass)
2 Switch QS1 on Box to ON position Only in case of BOX in version FULL
3 Switch QS1-n on each Core to ON position
4 Wait for rectifier on each Core ON
On the TS-LCD the rectifier icon is
green and the VDC is > 700V
5 Switch QS44 to ON position
6 Switch QS2 to ON position Fans on the BOX ON
7 Switch QS4_n on each Core to ON position Fans on each Core ON
8
Switch QS9_n on each Core to ON and close the
external battery disconnector
9 Switch QS4 on Box to ON position Only in case of BOX in version FULL
10
Switch QS3 to OFF position. Only in case of BOX in version FULL
In case of UPS w/o QS3, open the external
maintenance bypass switch. In case of BOX in version value or
empty
11 Turn inverter ON
By pressing the stop button command
on the TS-LCD