3.47.2 Principle
Flux balance differential protection, also known as "small differential protection", should input
the current from the neutral side current circuit of the device, and the overcurrent setting should be
taken as 87MF_DIF_Coe_Id* Machine_Ie. When installing a flux balance current transformer in the
motor or generator, the flux balance differential protection can be put into operation. At this time,
the stabilized protection, including instantaneous high stage and biased low stage of differential
protection, and CT break supervision block should be set to disabled; If a flux balanced current
transformer is not installed, but the current introduced by the device is already differential current,
the setting principle is the same.
3.47.3 Logic
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