Installation guide

UPS 40-160 kVA, 400 V 50/60 Hz output
User’s and Installation Guide
1023294
Revision C
46
1. Press the REPO pushbutton switch.
The input, output, and bypass backfeed contactors open, the battery breaker or
disconnect is tripped, and the Power Module is turned off immediately, without asking for
verification.
Note!
Do not attempt to restart the system after Load Off until the cause of the shutdown has
been identified and cleared.
2. To restart the UPS after using the REPO pushbutton, reset the REPO switch and then
follow the procedure, in paragraphs 7.1 or 7.2.
7.11 Using Mechanical Bypass Switch (40-80 kVA)
The operation of the integral MBS is allowed for a trained person only who is familiar with the
UPS behaviour and functions. The full UPS wiring diagram with a MBS switch is presented in
the installation part of the manual.
Note!
The integral MBS consist of three switches (S2, S3, S4) and failure to understand the
correct sequence may drop the critical load.
Figure 34. ThenormalpositionsofthethreeMBSswitchesandrectierdisconnectswitch(must
belocatedinthesitewiring).