Transfer Ups From Maintenance Bypass To Double Conversion Mode; Figure 6-45: Maintenance Bypass Mode; Figure 6-46: Double Conversion Mode - Eaton 93PR Installation And Operation Manual

6.8. Transfer UPS from Maintenance Bypass to Double Conversion Mode

To transfer the UPS back to Double Conversion Mode:
1. The normal start position should be the following:
Maintenance
bypass input
Static
bypass input
Rectifier input
2. Turn ON the rectifier switch to connect rectifier input to UPS.
3. Turn ON the Static bypass switch toconnect UPS bypass input.
4. Turn ON the output switch toconnect UPS Inverter output.
5. Perform the UPS start-up procedure (bypass mode) in Section
Bypass Mode .
6. Turn OFF the MBS, and cut off the UPS maintenance bypass (MBS) output.
7. Refer the Section
Mode.
The UPS is now in Double Conversion Mode
Maintenance
bypass input
Static
bypass input
Rectifier input
Copyright © 2021 Eaton Corporation plc. All rights reserved.
Bypass switch
Input switch

Figure 6-45: Maintenance Bypass Mode

6.3.4 Transfer from Bypass to Double Conversion Mode to Double Conversion
Bypass switch
Input switch

Figure 6-46: Double Conversion Mode

Installation and Operation Manual
Maintenance bypass switch (MBS)
Output switch
6.3.2 Starting the UPS System in
Maintenance bypass switch (MBS)
Output switch
Eaton 93PR 60-1200 kW UPS
Output
Output
117