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Page#    16 Blog Entries  <<prev  next>>
General Travel
40155 views
2

Jun 03 2017 (16:14)   ASN/Asansol Junction (7 PFs)
guest
Entry# 2305850            Tags   Past Edits
ASN div ready to do 200kmph test runs for WAP5 for #CLW ...
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7 Public Posts - Mon Jun 05, 2017
General Travel
30215 views
5

Mar 04 2016 (23:41)   NH/Naihati Junction (6 PFs) | MGS/WAP-4/22827
 
Poor_People^~   17189 blog posts
Entry# 1757798            Tags   Past Edits
#railfanning
#observation
#CLW 60 Glorious Years since 1950 Loco
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1 Public Posts - Sat Mar 05, 2016

1 Public Posts - Sun Mar 06, 2016
2 Followers
Info Update
65454 views
28

★★★
Jun 17 2015 (00:02)   CRJ/Chittaranjan (3 PFs)
 
guest   6387 blog posts
Entry# 1514755            Tags   Past Edits
#railwayengineering
Ref: Blog Entry# 1513533 vide News Entry# 229393( CLW will Produce only 3 Phase AC Electric Locomotives in Future)
Difference between AC and DC Motors , which is Cost Effective and Why ?
In this blog I am sharing the Difference between AC and DC Motors as Given by Mr Ryan Chamberlin who is the Account Manager at Precision Electric, Inc.
AC
...
more...
Electric Motors: Commonly ran by an AC variable frequency drive, an AC electric motor operates by applying alternating current (AC) power to the electric motor. An AC electric motor consists of several parts but the main parts are the stator and rotor.
The AC electric motor’s stator has coils that are supplied with the alternating current and produces a rotating magnetic field. The AC electric motor’s rotor rotates inside the electric motor’s coils and is attached to an output shaft that produces torque by the rotating magnetic field. There are two different types of AC electric motors and each of them uses a different type of rotor. The first type of AC motor is called an induction motor (also known as an asynchronous motor).
An induction motor uses a magnetic field on the rotor of an induction motor that’s created by an induced current. The other type of AC motor is called a synchronous motor and rotates precisely at the supply frequency or on a sub-multiple of the supply frequency.
A synchronous motor is able to operate with precision supply frequency because it doesn’t reply on induction. The magnetic field on a synchronous motor is generated by current delivered through slip rings or a permanent magnet. Synchronous motors run faster than induction motors because the speed is reduced by the slip of the asynchronous motor.(This type of AC asynchronous Traction Motor is Used in 3 Phase Electric Locomotives of Indian Railway)
DC Electric Motors : DC electric motors are powered from direct current (DC) power and are mechanically commutated machines. DC electric motors have a voltage induced rotating armature winding, and a non-rotating armature field frame winding that is a static field, or permanent magnet.DC electric motors use different motor connections of the field and armature winding to produce different speed and torque regulation. Unlike AC electric motors, DC electric motor speed can be controlled within the winding by changing the voltage applied to the DC motor armature, or by adjusting the field frame current.Most DC electric motors today are manufactured to be controlled with industrial electronic DC drives. DC electric motors are still used in many applications across the globe such as paper producing machines, and steel mill rolling machines.(This type of DC Hitachi Traction Motor is Used in Conventional Locos of Indian Railway)
Conclusion: DC motors are usually seen in applications where the motor speed needs to be externally controlled. AC motors work best in applications where power performance is sought for extended periods of time. All DC motors are single phase, but AC motors can be single phase or three phase.AC and DC motors use the same principle of using an armature winding and magnetic field except with DC motors, the armature rotates while the magnetic field doesn’t rotate. In AC motors the armature does not rotate and the magnetic field continuously rotates.In some applications today, DC electric motors are replaced by combining an AC electric motor with an electronic speed controller, known as variable frequency drives.
Why DC Electric Motors are replaced by AC Electric Motors ?
Ans: DC electric motors are replaced with an AC electric motor and an electronic speed controller because it is a more economical and less expensive solution.DC electric motors have many moving parts that are expensive to replace, and DC electric motor repair is usually more expensive than using a new AC electric motor with an electronic controller.
The Most Cost Effective Solution:
You can save thousands of dollars by switching from three phase DC to AC motors. AC Motors now own the majority of the market share, driving down costs. AC Variable Frequency Drives such as the ones we sell at our web store give complete control over the speed and power consumption of an AC Motor.In our experience, combining an AC motor and drive proves to be the most cost effective solution for most applications. When servicing our customers in the field, we often recommend looking at the SMVector Series Variable Frequency Drive in combination with a three phase AC motor.
Brief Details about the Author: Ryan Chamberlin has been working at Precision Electric, Inc since June of 1999. In 2003, Ryan created the online sales and service division of Precision Electric, Inc. He currently manages online customer relations and web marketing.
Attached Images:
1 AC Electric Motor
2 DC Electric Motor
Source of this data and attached images: click here

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7 Public Posts - Wed Jun 17, 2015

16629 views
1

Jun 17 2015 (22:35)
guest   6387 blog posts
Re# 1514755-26               Past Edits
I am adding. Just wait.
#CLW added.
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5 Public Posts - Wed Jun 17, 2015

1 Public Posts - Thu Jun 18, 2015
General Travel
24083 views
5

Dec 22 2014 (19:26)   12621/Tamil Nadu Express (PT)
 
guest
Entry# 1316595            Tags  
Today it proved how advantageous P7 can be
---- TN was racing neck to neck with GT from NGP
---- GT has few stops from NGP to ET and TN is NON STOP
---- GT had P7 , TN was headed by P4
----
...
more...
NGP to ET has well known ghat section and it's no secret that 6000 hp P7 gives superior performance compared to 5400 HP p4
.
So in End result was that despite of HALTS , gt took less time than TN . Many of us who thought that TN will overtake GT wel before BETUL were shocked !!!!! GT raced away and at Jujhapur , gap increased to 15 mins . TN has VVIP priority but WAP7 of GT in no mood to Bow down to Thalaiva :)
_/\_
Salute to #WAP7 and #CLW
.
Thanks to Admin #AJ** for updates ..

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8 Public Posts - Mon Dec 22, 2014
Info Update
17424 views
0

Dec 05 2014 (17:28)   CRJ/Chittaranjan (3 PFs)
 
guest   9508 blog posts
Entry# 1297764            Tags  
IGBT Loco Position
IGBT Loco turned out from #CLW
IGBT Loco Despatch as on 30.11.14
IGBT Converter GTO Converter MICAS VCU TCN VCU
SN Type CLW No Loco No Rly Home Desp Date SR1 SR2 CEL1 CEL2 BUR1 BUR(2+3)
1 WAG-9 TG-308 31329 CR AQ 16.05.12 ABB ABB BH BH CG CG
...
more...

2 WAP-7 TPP-113 30313 SCR LGD 31.05.12 BH BH BH BH BT BT
3 WAG-9H TG-324 31345 SCR LGD 31.05.12 BH BH BH BH BT BT
4 WAG-9H TG-325 31346 SCR LGD 16.06.12 BH BH BH BH BH BH
5 WAP-7 TPP-114 30314 SCR LGD 30.06.12 BH BH BH BH BH BH
6 WAP-7 TPP-115 30315 CR AQ 30.06.12 ABB ABB BH BH BT BT
7 WAG-9H TG-326 31347 SCR LGD 11.07.12 BH BH BH BH BH BH
8 WAG-9H TG-327 31348 SECR BIA 25.07.12 ABB ABB BH BH CG CG
9 WAG-9H TG-335 31356 WCR TKD 30.07.12 ABB ABB C-DAC C-DAC CG BT
10 WAG-9H TG-334 31355 SECR BIA 01.08.12 ABB ABB BT BH BT CG
11 WAG-9H TG-336 31357 WCR TKD 29.08.12 ABB ABB BT CG CG CG
12 WAG-9H TG-330 31351 SECR BIA 31.08.12 BT BT BT BT ABB ABB
13 WAG-9H TG-337 31358 WCR TKD 31.08.12 ABB ABB BT BT CG CG
14 WAG-9H TG-338 31359 CR AQ 31.08.12 ABB ABB CG CG BT CG
15 WAG-9H TG-339 31360 CR AQ 27.09.12 ABB ABB BH BH CG BT
16 WAP-7 TPP-125 30325 SCR LGD 29.10.12 CG CG CG BH CG CG
17 WAG-9H TG-340 31361 CR AQ 29.10.12 ABB ABB BH CG BT BT
18 WAG-9H TG-342 31363 SER TATA 15.11.12 BH BH BH BH BH BH
19 WAG-9H TG-341 31362 SER TATA 22.11.12 BH BH BH BH BH BH
20 WAG-9H TG-343 31364 CR KYN 26.11.12 BH BH BH BH BH BH
21 WAG-9H TG-345 31366 SECR BIA 30.11.12 BH BH BH BH BH BH
22 WAG-9H TG-360 31381 ECR GMO 03.01.13 BT BT CG BH BH/BPL BH/BPL
23 WAG-9H TG-359 31380 ECR GMO 04.01.13 BT BT CG BT BH/BPL BH/BPL
24 WAG-9H TG-363 31384 CR KYN 05.01.13 BH BH BH BH BH BH
25 WAG-9 TG-344 31365 CR KYN 08.01.13 BH BH BH BH BH BH
26 WAG-9 TG-361 31382 CR KYN 09.01.13 BH BH BH BH BH BH
27 WAG-9 TG-346 31367 CR KYN 30.01.13 BH BH BH BH BH BH
28 WAP-7 TPP-145 30345 SCR LGD 15.03.13 BH BH BT BT BT BT
29 WAG-9 TG-366 31387 CR KYN 21.03.13 BH BH BH CG BT BT
30 WAG-9 TG-369 31390 CR KYN 21.03.13 BH BH BH BH BT CG
31 WAG-9H TG-372 31393 SCR LGD 25.03.13 BH BH BH BH BH/BPL BT
32 WAG-9H TG-373 31394 SECR BIA 26.03.13 BH BH BH BH BH BH
33 WAG-9H TG-374 31395 SECR BIA 30.03.13 BH BH BH BH BH BH
34 WAG-9H TG-375 31396 SECR BIA 31.03.13 BH BH BH BH BH BH
35 WAG-9H TG-390 31411 CR KYN 10.04.13 BH BH BH BH BH BH
36 WAG-9H TG-378 31399 SECR BIA 07.05.13 BH BH BH BH BH BH
37 WAG-9H TG-379 31400 SECR BIA 10.05.13 BH BH BH BH BH BH
38 WAP-7 TPP-154 30354 SR RPM 11.05.13 BH BH BH BH BH BH
39 WAP-7 TPP-153 30353 NR GZB 15.05.13 BH BH CG BH BH BH
40 WAG-9H TG-380 31401 SECR BIA 29.05.13 ABB ABB BT BH ABB ABB
41 WAG-9H TG-381 31402 CR AQ 31.05.13 ABB ABB BH BH ABB ABB
42 WAG-9H TG-383 31404 CR AQ 31.05.13 ABB ABB BH BH ABB ABB
43 WAG-9H TG-382 31403 CR AQ 03.06.13 ABB ABB BH BH ABB ABB
44 WAG-9H TG-385 31406 CR AQ 12.06.13 ABB ABB BT BT ABB ABB
45 WAG-9H TG-384 31405 CR AQ 20.06.13 ABB ABB BT CG ABB ABB
46 WAG-9H TG-386 31407 CR AQ 29.06.03 BH BH CG CG CG CG
47 WAP-5 TP-57 30067 WR BRC 01.07.13 BT BT BT BT CG CG
48 WAG-9H TG-388 31409 CR KYN 01.07.13 BH BH CG BH BH BH
49 WAP-7 TPP-159 30359 SR RPM 04.07.13 BT BT CG CG CG CG
50 WAG-9H TG-389 31410 SCR LGD 11.07.13 BH BH BH CG BH BH
51 WAG-9H TG-393 31414 ECR GMO 19.07.13 BT BT CG CG CG CG
52 WAG-9H TG-392 31413 CR KYN 26.07.13 BH BH CG CG BH BH
53 WAG-9H TG-410 31431 CR KYN 26.07.13 BH BH CG BH BH BH
54 WAG-9H TG-398 31419 CR KYN 30.07.13 BH BH BH CG BH BH
55 WAG-9H TG-394 31415 WCR TKD 01.08.13 BH BH BT BH AAL AAL
56 WAG-9H TG-395 31416 CR KYN 01.08.13 BH BH BH BH BH BH
57 WAG-9H TG-397 31418 CR KYN 08.08.13 BH BH BH CG BH BH
58 WAG-9H TG-399 31420 CR KYN 14.08.13 BH BH BT BT BH BH
59 WAG-9H TG-401 31422 SER TATA 19.08.13 BH BH BT BT BH BH
60 WAG-9H TG-404 31425 SER TATA 31.08.13 BH BH CG CG BH BH
61 WAG-9H TG-405 31426 SER TATA 31.08.13 BH BH BH BT BH BH
62 WAG-9H TG-402 31423 ECR GMO 07.09.13 BT BT CG CG CG CG
63 WAG-9H TG-391 31412 ECR GMO 13.09.13 CG CG CG CG CG CG
64 WAG-9H TG-400 31421 ECR GMO 13.09.13

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Page#    16 Blog Entries  <<prev  next>>

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