APC Smart UPS 3000VA 240 v

tonynwa_apc · ‎2021-06-28

This was originally posted on APC forums on 2/29/2016

Hi, this UPS is showing no earth on a fluke mains tester SM100 when on battery power, is this correct? On mains supply in, it is normal showing correct earth bond.

At all times the UPS is bonded to earth.

Tony

BillP · ‎2021-06-28

This reply was originally posted by Bill on APC forums on 2/29/2016

Hi,

You will have ground but will not have neutral. When the UPS switches to battery hot and neutral are broken to prevent back feed. We have Kbase FA156549 that discusses this issue.

See Answer In Context

BillP · ‎2021-06-28

This reply was originally posted by Bill on APC forums on 2/29/2016

Hi,

You will have ground but will not have neutral. When the UPS switches to battery hot and neutral are broken to prevent back feed. We have Kbase FA156549 that discusses this issue.