Local Breaker Back up Protection Sample Clauses

Local Breaker Back up Protection. This shall be provided for each 765 kV and 400 kV circuit breakers and will be connected to de- energize the affected stuck breaker from both sides. 1. LBB and REF relays shall be provided separately from the transformer differential relay. 2. LBB relay may also be provided as a built-in protection function of distributed bus bar protection scheme; however in such case separate LBB relay shall be provided for tie bays (in case of One and Half breaker scheme).
Sample 1Sample 2See All (15)
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Local Breaker Back up Protection. This shall be provided for each 765kV, 400kV and 220kV circuit breakers and will be connected to de-energize the affected stuck breaker from both sides. Notes: 1. LBB & REF relays shall be provided separately from transformer differential relay. 2. LBB relay may also be provided as built-in protection function of distributed bus bar protection scheme; however in such case separate LBB relay shall be provided for tie bays (in case of One and Half breaker scheme). 3. Over fluxing & overload protection can be provided as built-in feature of differential relay. 4. In 765kV & 400kV switchyard, if spare bay of half diameter is identified as future, Tie CB relay panel shall be provided with Auto-reclosure feature.
Sample 1Sample 2See All (14)
Local Breaker Back up Protection. This shall be provided for each 400kVand 220kV circuit breakers and will be connected tode-energize the affected stuck breaker from both sides.
Sample 1Sample 2Sample 3See All (11)
Local Breaker Back up Protection. This shall be provided for each 400kV circuit breakers and will be connected to de-energize the affected stuck breaker from both sides. 1. LBB & REF relays shall be provided separately from transformer differential relay. 2. LBB relay may also be provided as built-in protection function of distributed bus bar protection scheme; however, in such case separate LBB relay shall be provided for tie bays (in case of One and Half breaker scheme). 3. Over fluxing & overload protection can be provided as built-in feature of differential relay. 4. In 400kV switchyard, if spare bay of half diameter is identified as future, Tie CB relaypanel shall be with Auto-reclosure feature.
Sample 1

Related to Local Breaker Back up Protection

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