The following figure shows a pass with two input lines and three output lines and current transformers. In this case, which of the overcurrent or REF protections works against it? Just name it. (REF protection is installed separately in each phase and the same current transformers in the figure are used for overcurrent protection.) 1) Connect point A to B in an identical phase 2) Connect point B to C in an identical phase 3) Connect E to D in an identical phase 4) Two-phase short circuit at point G

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The following figure shows a pass with two input lines and three output
lines and current transformers. In this case, which of the overcurrent or
REF protections works against it? Just name it. (REF protection is
installed separately in each phase and the same current transformers in
the figure are used for overcurrent protection.)
1) Connect point A to B in an identical phase
2) Connect point B to C in an identical phase
3) Connect E to D in an identical phase
4) Two-phase short circuit at point G
5) Short circuit of two phases to ground at point F
Please solve completely
A
F
G
E
Transcribed Image Text:The following figure shows a pass with two input lines and three output lines and current transformers. In this case, which of the overcurrent or REF protections works against it? Just name it. (REF protection is installed separately in each phase and the same current transformers in the figure are used for overcurrent protection.) 1) Connect point A to B in an identical phase 2) Connect point B to C in an identical phase 3) Connect E to D in an identical phase 4) Two-phase short circuit at point G 5) Short circuit of two phases to ground at point F Please solve completely A F G E
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