Eaton 93PR - 4.8. Battery System Installation

Eaton 93PR 500 kW UPS
User's and Installation Guide 66
6.7. Transfer the UPS from Double Conversion Mode to Maintenance Bypass Mode
The operation of the internal MBS is allowed for a trained person only who is familiar with the UPS behavior and
functions. The full UPS wiring diagram with a MBS switch is presented in the installation instructions.
NOTE
The integral MBS and Static Bypass need to supplied by the same source.
Transfer the UPS to Maintenance Bypass Mode:
1. The normal start position should be following:
Output
Maintenance
bypass input
Static
bypass input
Rectifier input
Bypass switch
Input switch Output switch
Maintenance bypass switch (MBS)
Input switch (closed)
Vertical position
Output
switch (closed)
Vertical position
Bypass
switch (closed)
Vertical position
MBS switch (open)
Horizontal position
UPM cabinet
Front view
IO cabinet
Figure 6-8: Double Conversion Mode