FIELD: electrical engineering. SUBSTANCE: due to insertion of third rectifier bridge 4 and provision of null detector 7 with two windings equipment responds to relation of current of reverse sequence to difference of currents of forward and reverse sequences which results in enhanced reliability and sensitivity of protection of network against phase conditions of operation. EFFECT: enhanced reliability and sensitivity. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| THREE-PHASE MOTOR PROTECTIVE GEAR | 1993 |
|
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|
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|
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|
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|
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|
SU960993A1 |
