Eaton 93PR - 6.8. Transfer UPS from Maintenance Bypass to Double Conversion Mode

Eaton 93PR 60-1200 kW UPS
Installation and Operation Manual
117
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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:
Output
Maintenance
bypass input
Static
bypass input
Rectier input
Bypass switch
Input switch
Output switch
Maintenance bypass switch (MBS)
Figure 6-45: Maintenance Bypass Mode
2. Turn ON the rectier switch to connect rectier 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
6.3.2 Starting the UPS System in
Bypass Mode .
6. Turn OFF the MBS, and cut o󰀨 the UPS maintenance bypass (MBS) output.
7. Refer the Section
6.3.4 Transfer from Bypass to Double Conversion Mode to Double Conversion
Mode.
The UPS is now in Double Conversion Mode
Output
Maintenance
bypass input
Static
bypass input
Rectier input
Bypass switch
Input switch
Output switch
Maintenance bypass switch (MBS)
Figure 6-46: Double Conversion Mode