We are in the middle of a MK-5 to MK6e migration and have encountered an issue of grounds in the new system.
Whenever a core is powered off (with the toggle switch in <PD>), a split occurs on the DC system. With all cores powered up there is no split, with one core powered down there is a split of 10-15V, with all 3 down there is about 70V split.
The initial response from the OEM was that "This is as per the original GE MK-5 design". However, we went to a sister unit that has not been migrated and found that powering off cores in the un-migrated MK-5 panel does not generate splits.
Has anyone ran into this issue before?
Whenever a core is powered off (with the toggle switch in <PD>), a split occurs on the DC system. With all cores powered up there is no split, with one core powered down there is a split of 10-15V, with all 3 down there is about 70V split.
The initial response from the OEM was that "This is as per the original GE MK-5 design". However, we went to a sister unit that has not been migrated and found that powering off cores in the un-migrated MK-5 panel does not generate splits.
Has anyone ran into this issue before?