breakerMetasol-MS/EOCRVerified · sol.ls-electric.com
Metasol-MS/EOCR Ub — Phase Unbalance
Trip — immediate stop
CAUSE
Why does it occur?
- Phase unbalance
- Three-phase current unbalance within set 10~90%; operates at 5s
REMEDY · Step by step
How to fix it?
Inspect wiring and source phases; verify the unbalance setting.
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Verified · sol.ls-electric.com
Open PDF ↗LSIS EMPR (DMPi) Series Manual (E 09-1909)
p.18