Figure 33. Normal positions of the MBS switches and rectifier disconnect switch
(must be located in the site wiring)
A Static bypass input
1
Maintenance Bypass Switch (MBS)
B Rectifier input
C Out
2.
Perform the transfer from the double conversion mode to the bypass mode
as instructed in Section
7.3.3
. Remember to verify the transfer before
proceeding to the next step.
3.
Turn the MBS from the UPS position to the Test position.
4.
Perform the LOAD OFF procedure as described in Section
7.3.7
.
5.
Turn the MBS from the Test position to the Bypass position.
6.
Turn off the rectifier switch to disconnect the UPS rectifier input.
7.
Turn off the static bypass switch to disconnect the UPS bypass input.
The UPS is now in the maintenance bypass mode:
Eaton 93PS UPS 8–40 kW
User's and installation guide
©
Eaton Corporation plc 2016. All rights reserved.
Revision: 003
Document ID: P-164000493
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