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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....
5 Posts
to avoid noice/sparks they use back one and not on the top of pilots/drivers
even in rainy season it is advisible to use the back one only .
only when in loop lines or ends they change to reach to main live wires
if any body observes the live wires are not straight and in zig zag ,where as it appears to us as...
more...
even in rainy season it is advisible to use the back one only .
only when in loop lines or ends they change to reach to main live wires
if any body observes the live wires are not straight and in zig zag ,where as it appears to us as...
more...
NO, climate does Not play a role. It is based on the principles I have outlined above previously. The front panto will be used only because they are going thru a dead zone, and the LP needs (sometimes only) to go through and pull the rake. This is seen mostly in suburban sections, not on mainlines.....
Good wishes\
Good wishes\
but i hav seen many/ few electric engines using front panto here in new delhi- nizamuddin- faridabad section....
This must be MEMUs Mainline Electrical Multiple Units only. Not on Express or Passenger trains with single engine, unless there is an fault in the Loco where one of the pantos is giving trouble.
Good wishes
Good wishes
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