If only phase current is used in breaker failure protection, miss trip may occur no matter the threshold of current is higher or lower than load current.

如果仅采用相电流判据，将无法避免失灵保护误动或者拒动。

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MacDonald will miss the trip to Wasps in the Premiership due to jetlag and a niggling leg injury, but is expected to be in contention for the LV Cup clash with Leicester Tigers on 8 November at Headingley.

BBC: MacDonald backs captaincy switch

Roberts is set to miss Rovers' trip to Manchester United on Saturday after showing symptoms of the virus.

BBC: Rovers lose Roberts to swine flu

"As he might miss the New Zealand trip in December and January, a stint with the county will help him to come back, " said Mendis.

BBC: Muttiah Muralitharan