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Blog Entry# 1552354
Posted: Jul 28 2015 (14:20)
23 Responses
Last Response: Aug 07 2015 (01:13)
23 Responses
Last Response: Aug 07 2015 (01:13)
Jul 28 2015 (14:20) 11057/Mumbai CSMT - Amritsar Express (PT) | GZB/WAP-5/30032
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The Lightweight Monster of IR. So far successful in this year among all Loco Classes only 32 Failures in the First Six Months of this year as per Data available in E-Loco website.
WAP-5 #30032 leading the Dadar-Amritsar express.This train is now has a 3 phase loco as its regular link,most of the times a GZB WAP-7
Pic Courtesy: Shan
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The Lightweight Monster of IR. So far successful in this year among all Loco Classes only 32 Failures in the First Six Months of this year as per Data available in E-Loco website.
WAP-5 #30032 leading the Dadar-Amritsar express.This train is now has a 3 phase loco as its regular link,most of the times a GZB WAP-7
Pic Courtesy: Shan
Pic...
more...
22 Posts
For question No.1, you can see the document in the following link, which has a very good explanation about Traction motor suspension and the advantages/limitations conducted on IR locomotives.
click here
Firstly, Gear ratio is not related to type of traction motor being used ( DC or 3 phase Induction). It just indicates what the locomotive has been designed for. For identical traction motors, higher GR will result in higher speeds, mainly used in Passenger locos, while lower GR means more torque, which is usually for Freight locos. Also,...
more...
click here
Firstly, Gear ratio is not related to type of traction motor being used ( DC or 3 phase Induction). It just indicates what the locomotive has been designed for. For identical traction motors, higher GR will result in higher speeds, mainly used in Passenger locos, while lower GR means more torque, which is usually for Freight locos. Also,...
more...
The features that make 3 phase locos as 3 phase are the Traction motors alone and nothing else!! Even regenerative braking is possible with conventional locos. (Technically possible, but with a few limitations)
For the same output power, induction motors are usually much smaller than DC motors. Thus 3 phase locomotives are more attractive because it is possible to design higher power locomotives in the same body frame, without exceeding the Axle load limits. Also, due to the latest power electronics advancements, it is much easier to computerize the controls in a 3 phase drive. All the other features like HOG, Regenerative braking, computerized control, Dynamic braking etc are not exclusive...
more...
For the same output power, induction motors are usually much smaller than DC motors. Thus 3 phase locomotives are more attractive because it is possible to design higher power locomotives in the same body frame, without exceeding the Axle load limits. Also, due to the latest power electronics advancements, it is much easier to computerize the controls in a 3 phase drive. All the other features like HOG, Regenerative braking, computerized control, Dynamic braking etc are not exclusive...
more...
1. Motors alone! Gears are merely meant for transmission and control of torque generated by the motors.
Stage in transmission means the number of times the reduction needs to be done to get the desired output.
In single stage gearboxes only one reduction is there (2:1,4:1, whatever). The input rpm is reduced only once, in a single step.
In two stage gearbox, reduction is...
more...
Stage in transmission means the number of times the reduction needs to be done to get the desired output.
In single stage gearboxes only one reduction is there (2:1,4:1, whatever). The input rpm is reduced only once, in a single step.
In two stage gearbox, reduction is...
more...