Can MDGF be combined with ZSI?
Issue:
ZSI on MDGF systems
Product Line:
Circuit breakers
Resolution:
On MDGF systems:
ZSI on MDGF systems
Product Line:
Circuit breakers
Resolution:
On MDGF systems:
- In a Main-Tie-Main system, the main breaker cannot be short time ZSI restrained by the tie breaker.
- Since the main circuit breaker cannot be restrained on short time, it must be ZSI self restrained on the short time function.
- The main circuit breaker can be ground fault restrained by the feeder breakers.
- Installation of GF ZSI has no effect on MDGF and MDGF has no effect on GF ZSI.
Released for: Schneider Electric Canada
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