Functions
5.1 Current protection
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01
59
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Figure 5-6 4-pole circuit breaker, current converter installed internally
Measurement method 2: Direct detection of the ground-fault current via a current transformer at the
grounded star point of the transformer
The current converter is installed direct at the grounded star point of the transformer.
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Figure 5-7 3-pole circuit breaker, current converter at the grounded star point of the transformer
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