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Blog Entry# 205555
Posted: Jul 16 2011 (10:33)
10 Responses
Last Response: Jul 16 2011 (10:57)
10 Responses
Last Response: Jul 16 2011 (10:57)
frnds i had a question in my mind...question is abt d rail electric engine.... in an electric engine there are 2 pantograph-> one in d front & one at d back... that touches the OHE(overhead electricity) which touches the wire above.... normally wen an engine is coming towards you ..you see dat the d pantograph which is at d back touches the OHE or the electric above the train...but sometimes some engines uses d frontside pantograph wen it's cuming towards us.... why is dat... can anyone clarify my doubt... i jst want to know why is it... bcoz i always get confuse why is it like this....???? plzz help me... to clarify my doubts....
9 Public Posts - Sat Jul 16, 2011
In AC traction line. There is dead zone of OHE after some kilometers for phase changing purpose. Phase changing require for balancing of 3 phase circuit. So, in dead zone LP's are specially instructed for no breaking & take there pentograph down. Now when OHE comes in circuit LP give command to pentograph and normally first pentograph comes in action first. You can feel dead zone in some passenger trains.
Regards
HE2L
Regards
HE2L