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What is meant by WAP4; WAP5; WAP7 etc. Please explain in detail?  
9 Answers
Jul 27 2011 (3:30AM)

Entry# 149     
What is meant by WAP4; WAP5; WAP7 etc. Please explain in detail?

Jul 28 2011 (5:47PM)
Blog Post# 211612-0     
Durgiana Exp needs LHB Rake with Pantry or Buffet*^~   Added by: Durgiana Exp needs LHB Rake with Pantry or Buffet*^~  Jul 29 2011 (10:44AM)
Ladies and Gentlemen . Presenting , the IRFCA Photo of Howrah Electric Loco Shed Homed WAP - 7 Loco , at Howrah Jn Railway Station , ready to haul the 12339 Coalfield Express ; at Platform No 14 of HWH Jn . This is Loco No # 30295 and photo has been taken by IRFCA Member Mr. Avishek Basu . This photo has been uploaded today [July 28 , 2011 (Thurs)] . At last , HWH Loco Shed has got this WHITIE BEAUTY and my dream has come true . This is ER's Loco from WAP - 7 Series . Taaliyan !!!!

Jul 18 2011 (1:58PM)
Blog Post# 206588-1     
Guest: 3bf85f2a   Added by: moderator*^~  Jul 28 2011 (4:44AM)
These are the loco's from higher class to lower class. e.g. WAP5, has more power as compare to WAP7,

Jul 18 2011 (2:00PM)
Blog Post# 206588-2     
WRIK*^   Added by: moderator*^~  Jul 27 2011 (7:02AM)
Please see this:
click here

Jul 18 2011 (2:04PM)
Blog Post# 206588-4     
SMJ*   Added by: moderator*^~  Jul 27 2011 (7:02AM)
WAP-4 is one of the most important electric locomotives used in India. It is a very powerful class capable of hauling 26 coaches at a speed of 140 km/h(they have a max speed of 175 km/h). It is also among the most widely used locomotives.
Sheds Holding WAP-4
Howrah (HWH) 90+ locos
Erode (ED) 85+ locos
(CNB) 60+ locos
Ghaziabad (GZB) 80+ locos
Vadodara (BRC) 80+ locos
Lallaguda (LGD) 65+ locos
Royapuram (RPM) 45+ locos
Ludhiana (LDH) 30+ locos
Santragachi (SRC) 55+ locos
Mughalsarai (MGS) 60+ locos
Bhusawal (BSL) 35+ locos
Itarsi (ET) 25+ locos
Vijaywada (BZA) 5+ locos
The WAP-4 class hauls 32coach (1800 tonne) trains at 110 km/h. It is also used to haul the premier Rajdhani & Shatabdi expresses at 140 km/h. In trials, the loco has achieved a top speed of 169.5 km/h, though Indian Railways limits its top speed to 145 km/h.
With a 24 coach passenger train, the acceleration time / distances are:
110 km/h - 338 seconds (6.8 km)
120 km/h - 455 seconds (10.5 km)
130 km/h - 741 seconds (20.5 km)
Starting Tractive Effort (Te) - 32000 kg/force
Power type Electric
Gauge 5 ft 6 in (1, 676 mm)
Top speed Test Run:169.5 km/h (105 mph), Operational: 140 km/h (87 mph)
Power output 5, 350 hp (3, 989 kW)
Tractive effort 32000 kg/force
Career Indian Railways
Number Starting from 22201 to 22900+

Jul 18 2011 (2:05PM)
Blog Post# 206588-5     
Guest: 7d612a81   Added by: moderator*^~  Jul 27 2011 (7:02AM)
WAP-4 locomotive is third powerful engine of India that has power in rank #3, capable of hauling rake of 24 coaches speed of upto 130 Kmph. Mainly It is used for Superfast trains and few rajdhanis too!
WAP-5 locomotive is the second powerful loco of India but the most fastest Loco of India, capable of touching speed of 180 Kmph. It is mainly used for Shatabdi trains and sometimes for Rajdhani.
WAP-7 locomotive is the most powerful loco of India capable of hauling 26 coaches at speed of 130 Kmph and its speciality
is that in comparision to wap-5 n 4 loco it gathers speed within few mins of deaprture. It's mainly used for Rajdhani and few sf trains

Jul 18 2011 (2:05PM)
Blog Post# 206588-6     
SMJ*   Added by: moderator*^~  Jul 27 2011 (7:02AM)
WAP 5 is the name of a class of electric locomotive used by Indian Railways. The first 10 locomotives were imported from ABB in Switzerland in 1995. They are supposed to be a variant of the Lok 2000. Chittaranjan Locomotive Works (CLW) started production in 2000. It was designed to haul 18 coach passenger trains at 160 km/h (99 mph). It is the first 3-phase locomotive in India.
Other notable features of this locomotive are the provision of taps from the main transformers for hotel load, pantry loads, flexible gear coupling, wheel-mounted disc brakes, and a potential for speed enhancement to 225 km/h (140 mph). Braking systems include regenerative braking (160kN), loco disc brakes, automatic train air brakes, and a charged spring
parking brake. MU operation possible with a maximum of two locos. At trials, a WAP-5 has been tested up to 184 km/h (114 mph).
The WAP-5 series of locomotives haul the premium trains on Indian Railways like the Mumbai Rajdhani Express, Bhopal Shatabdi Express, Lucknow Shatabdi Express, Prayagraj Express, etc. The Bhopal Shatabdi hauled by a WAP-5 travels at 161 km/h (100 mph) in the New Delhi - Agra Cantt and Gwalior - Morena section.
Around 35 of these locomotives have been put to service as of early 2011.

Jul 18 2011 (2:07PM)
Blog Post# 206588-7     
SMJ*   Added by: moderator*^~  Jul 27 2011 (7:02AM)
WAP 7 is a high speed locomotive indigenously developed by Chittaranjan Locomotive Works. It is capable of hauling trains at speeds ranging between 140 and 160 km per hour and is now largely used by Northern Railways (NR), South Central Railways (SCR) and Southern Railways (SR).
The current locomotive sheds which house this locomotive are:
Ghaziabad (Code:GZB)
Lallaguda (Code:LGD).
Ajni (Code:AJNI)
With a maximum speed rating of 180 km/h (IR restricts it to 145 km/hr), the WAP-7 boasts of the most phenomenal acceleration figures while hauling mail/express trains. The WAP-7 can also haul loads of 24-26 passenger coaches (1430-1550t) at 110+ km/h per hour. It is also known to haul 16 heavyweight Air Conditioned coaches (1120t) in 1:40 inclines single-handedly. At a trial conducted by Indian Railways, it clocked a speed of 177 km/h. It is the most successful passenger locomotive in the Indian Railways portfolio after the WAP-4. It is used to haul premium trains like Rajdhani Express and Shatabdi Express apart from other regular mail/express trains. It also regularly hauls other trains like the Nizamuddin-Chennai, Nizamuddin-Bangalore, New Delhi-Sealdah and the New Delhi - Mumbai Rajdhani Expresses.
Currently a 7000 hp version with IGBT traction is under development by Chittaranjan Locomotive Works.
The most unique feature of this locomotive is that it eliminates the need to have separate DG sets for air-conditioning in long distance trains hence providing huge savings on maintenance and running costs.[citation needed]This technology is called HOG or "Head On Generation" where the loco transfers electric power from its pantograph to the coaches.
A 24-coach (1500t) passenger rake can be accelerated to 110 km/h in 240 seconds (over 4.7 km) by a WAP-7; to 120 km/h in 304 sec. (6.7 km); and to 130 km/h in 394 sec. (9.9 km). Around 100 of these locomotives have been put to service as of early 2011.
Power type Electric
Builder Chittaranjan Locomotive Works, West Bengal, India
Gauge 5 ft 6 in (1, 676 mm)
Current collection method Overhead AC with pantograph
Top speed Test Run:177 km/h (110 mph), Operational: 140 km/h (87 mph)
Power output 6, 350 hp (4, 735 kW)
Career Indian Railways
Locale Northern Railways, South-Central Railway.

Jul 18 2011 (2:21PM)
Blog Post# 206588-8     
Guest: 795d062a   Added by: moderator*^~  Jul 27 2011 (7:02AM)

Thank you very much for the information sir.

Jun 13 2011 (6:52PM)
Blog Post# 184882-0     
νιηαy దత్త   Added by: Ranjeet*^  Jul 29 2011 (11:43AM)
Can we know whether a Loco is Newer or Older by Its Number?
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