Phase Disagreement Protection
Phase Disagreement Protection
(OP)
Hi,I saw in a specification booklet of a 154 kV circuit breaker a clause which calls for a" phase disagreement protection " in the 154 kV circuit breaker, first can there be an integral protection scheme or must be it a separate relay in the control box of this circuit breaker? İf so there is needed to have current data from the contacts is it true? İs this kinda protection inherent with all high circuit breakers?






RE: Phase Disagreement Protection
For my opinion it's very simple protection for the single-phase CB.
All three phases must be closed or opened.
Stadnard solution is :
3 NO contact in parallel in series with three NC contact in parallel and conected to timer, timer closed contact and send trip do trip coil 2.
Possible build such functionaliti in the any digital controller with current criteria.
Hope it help.
Best Regards.
Slva.
RE: Phase Disagreement Protection
RE: Phase Disagreement Protection
RE: Phase Disagreement Protection
RE: Phase Disagreement Protection
RE: Phase Disagreement Protection