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How the MBS (Maintenance Bypass Signal) works at SRTG5KVA to 20KVA?

Issue:
How the MBS (Maintenance Bypass Signal) works at SRTG5KVA to 20KVA?

Product Line:
Smart UPS Online SRTG series

Environment:
All Serial Numbers

Cause:
They are confused about how and what is the importance and use of MBS "Maintenance Bypass Signal"

Resolution:

The MBS (Maintenance Bypass Signal) terminal is located on the back of the UPS (rear panel) and will be noted to have a jumper wire attached.
See image below:
MBS loc for 5KVA to 6KVA.JPG
MBS loc for 15KVA.JPG

The MBS jumper connector must remain attached in order for the UPS to provide normal operation. As soon as the MBS jumper wire is removed while the UPS is in online condition, the said UPS will switch to bypass mode. See screenshot below:

Jumper wire function.JPG

Note: Said Terminal is an option to perform a manual bypass.
 

APC Egypt

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