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Blog Entry# 1766205
Posted: Mar 14 2016 (00:02)
13 Responses
Last Response: Mar 17 2016 (20:27)
13 Responses
Last Response: Mar 17 2016 (20:27)
*****Technical Question about Twin Bo Bo 3-Phase Loco (i.e WAP-5)*****
Two Bo-Bo 3-Phase Speed Star is resting at BDTS, One is Non-Amul Livery the Fisrt One & the second One is in BRC's Majestic Amul Livery. (i.e BRC WAP-5 30071 & BRC WAP-5 30047)
BRC WAP-5 30071
Link: click here
BRC...
more...
Two Bo-Bo 3-Phase Speed Star is resting at BDTS, One is Non-Amul Livery the Fisrt One & the second One is in BRC's Majestic Amul Livery. (i.e BRC WAP-5 30071 & BRC WAP-5 30047)
BRC WAP-5 30071
Link: click here
BRC...
more...
26 Posts
No Jaadu as such. The better acceleration numbers are simply because of the higher axle load, difference in gear ratio and the control software ( Initial WAP7 locos had worse acceleration than WAP4, and many software patches were issued to improve the acceleration).
Another thing to note is that WAP7 has better acceleration only at low speeds. Beyond 60-70 kmph, WAP5 has a similar performance. Part of this can be attributed to the brute force of the P7 locomotive ( just a modified freight loco) which makes it easy to modify it for better starting Tractive effort.
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Another thing to note is that WAP7 has better acceleration only at low speeds. Beyond 60-70 kmph, WAP5 has a similar performance. Part of this can be attributed to the brute force of the P7 locomotive ( just a modified freight loco) which makes it easy to modify it for better starting Tractive effort.
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So, the WAP5 vs WAP7 won't end, uh? Damn! This never ends :P. When I glanced at this post I thought it would be WAP5 related. But the comparison with WAP7 was not necessary here :P
From next time no 3-Phaser comparison post will be initiated....
The query for which this post is initiated is elaborately answered in
/blog/post/1766205
/blog/post/1766205
By the way both WAP-5 & WAP-7 are dearest...
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The query for which this post is initiated is elaborately answered in
/blog/post/1766205
/blog/post/1766205
By the way both WAP-5 & WAP-7 are dearest...
more...
Common misunderstandings! :P
1. There is a difference between 'acceleration' and 'acceleration reserve'. Acceleration reserve refers to the short time ratings or maximum ratings (current, voltage, torque, power, etc) which the traction motors can withstand. In short, in elocos, the TMs can be overloaded for a short period of time, which results in results in a quicker pickup. TMs have ratings like 10 min rating, 1 hour rating, continuous rating, etc.
For example, a WAP4 with 750V voltage rating across the TMs can withstand 1250A for 10 min, 1100A for 1 hour,...
more...
1. There is a difference between 'acceleration' and 'acceleration reserve'. Acceleration reserve refers to the short time ratings or maximum ratings (current, voltage, torque, power, etc) which the traction motors can withstand. In short, in elocos, the TMs can be overloaded for a short period of time, which results in results in a quicker pickup. TMs have ratings like 10 min rating, 1 hour rating, continuous rating, etc.
For example, a WAP4 with 750V voltage rating across the TMs can withstand 1250A for 10 min, 1100A for 1 hour,...
more...