Eaton 93PR Series - 6.2. Use of LCD Control Panel; 6.2.1. Status indicator lamps

25-75 kW
User's and Installation Guide 72
Transfer the UPS to Maintenance Bypass Mode:
1. The normal start position should be following:
Figure6-9:TheNormalPositionsoftheMBSSwitchesandRectifierDisconnectSwitch
(MustbeLocatedintheSiteWiring)
2. Refer the chapter 6.4.3, and transfer Normal Mode to Bypass Mode.
3. Remove the protective cover plate in front of MBS, turn on the
MBS,
then turn off the output switch.
4. Refer the chapter 6.4.7 to shut down the USP system.
5. Turn off the rectifier switch to disconnect UPS rectifier input.
6. Turn off the static bypass switch to disconnect UPS bypass input.
7. Turn off the N line switch.
UPSisnowintheMaintenanceBypassMode:
Figure 6-10 Maintenance Bypass Mode
Maintenance
bypass input
Maintenance
bypass input
Static
bypass input
Static
bypass input
Rectifier input
Rectifier input
Bypass switch
Bypass switch
Input switch
Input switch
Output switch
Output switch
Maintenance bypass switch (MBS)
Maintenance bypass switch (MBS)