Indian Railways WAG class

WAG is a code given by Indian Railways to a series of electric locomotives, run in India. W is for broad gauge, A is for AC traction and G is for goods duty. They are the most powerful engines in the country yet. There are 9 WAG models and each model has further variations.

WAG 1

Manufacturer: Chittaranjan Locomotive Works ( CLW )

Variants

WAG 1 - 1S

Specification

Build dates: 1963-66
Wheel arrangement: B-B ( monomotor bogies )
Traction motors: AEC/Alstom/Siemens MG1420. Two motors (monomotor bogies), force-ventilated, fully suspended.
Gear ratio: 3.95:1
Transformer: MFO, type BOT 3150. 22.5 kV / 3000 kVA. 32 taps.
Rectifiers: Secheron A268 Excitrons (four). 510 A / 1250 V.
Axle load: 21.3 t
Max. Haulage: 1820 t
Pantographs: Two Faiveley AM-12

WAG 2

Manufacturer:The Japanese Group ( consortium of Hitachi,Mitsubishi and Toshiba )

Variants

WAG 2

Specification

Build dates: 1964-65
Wheel arrangement: B-B ( monomotor bogies like WAG 1 )
Traction Motors: Hitachi EFCO HKK (1270 kW, 1250 V, 1080 A, 695 rpm, weight 5300 kg).
Transformer: Hitachi AFI AMOC. 32 taps.
Rectifiers: AEV-48 silicon rectifiers, 2040 A / 2550 kW.
Pantographs: Two Faiveley AM-12

WAG 3

Manufacturer:50 C/s Group ( The 50 Cycles Group was a consortium of electric locomotive and allied equipment manufacturers of Europe,namely Alsthom ( Alstom ),MTE,Schneider-Westinghouse, ( Jeumont ),ACEC,Brown Boveri,Oerlikon,Siemens,AEG,Krupp )

Variants

WAG 3

Specification

Build date: 1965
Builder: Henschel
Wheel arrangement: B-B ( monomotor bogies like WAG 1 )

WAG 4

Manufacturer:Chittaranjan Locomotive Works ( CLW )

Variants

WAG 4

Specification

Build dates: 1966-71
Wheel arrangement: B-B ( monomotor bogies like WAG 1 )
Traction Motors: ACEC make, MG 1580 A1 (1160 kW, 1270 V, 1040 A, 690 rpm, weight 5850 kg). Fully suspended, bogie-mounted.
Gear Ratio: 3.95 : 1
Transformer: Oerlikon BOT 3460. 32 taps.
Rectifiers: Two GL 82220 silicon rectifiers, 1000 A / 1270 kW/1270 V. Weight 650 kg each.
Axle Load: 21.9 t
Hauling capacity: 2000 t

WAG 5

Manufacturer: All of the series except WAG 5HB: CLW, WAG 5HB: Bharat Heavy Electricals Ltd ( BHEL )

Indian locomotive class WAG-5

Main article: Indian locomotive class WAG-5

Variants

WAG 5 - 5A, 5H, 5HA, 5HB, 5HG, 5HR, 5RH, 5D, 5P, 5HE, 5E, 5B

Specification

Build dates:
- WAG 5, 1988–98
- WAG 5A, 1983–88
- WAG 5B, 1978–83
Wheel arrangement: Co-Co
Traction Motors: Alstom TAO 659 (575 kW, 750 V, 1070 rpm) or TAO 656; or Hitachi HS 15250A (See description under WAP-4.) Axle-hung, nose-suspended. Six motors.
Gear Ratio: 62:16 or 62:15 with Alstom motors, some 64:18 (Hitachi motors), many now 58:21 for mixed use.
Transformer: BHEL, type HETT-3900. 3900 kVA, 22.5 kV, 182 A. 32 taps.
Rectifiers: Silicon rectifiers (two) using 64 S-18FN-350 diodes each from Hind Rectifier. 2700 A / 1050 V per cubicle.
Bogies: Co-Co cast bogies (Alco asymmetric trimount—shared with WDM-2, WAM-4).
Axle load: 20 t
Max. Haulage: 2375 t
Pantographs: Two Faiveley AM-12
Current Ratings: 1100 A / 10 min, 750 A continuous

WAG 6

Manufacturer: ASEA ( WAG 6A ),Hitachi ( WAG 6B,WAG 6C )

Variants

WAG 6 - 6A, 6B, 6C

Specification

Build dates:
- WAG 6A, 1988–89
- WAG 6B, 1988
- WAG 6C, 1988
Wheel arrangement:
- WAG 6A, Bo-Bo-Bo
- WAG 6B, Bo-Bo-Bo
- WAG 6C, Co-Co
Traction Motors: ASEA make (WAG-6A), L3 M 450-2. Six motors, fully suspended, force-ventilated, separately excited, 3100 kg ; (WAG-6B) Hitachi HS 15556-OIR, bogie mounted, force-ventilated, compound-wound, 3200 kg ; (WAG-6C) Hitachi HS 15256-UIR, axle-hung nose-suspended, force-ventilated, compound-wound, 3650 kg.
Transformer: (WAG-6A) ASEA: TMZ 21, 7533 kVA; (WAG-6B/C) Hitachi AFIC-MS, 6325 kVA.
Thyristor controller: (WAG-6A) 24 YST 45-26P24C thyristors each with 24 YSD35-OIP26 diodes, 2 x 511 V, 2 x 4500 A; (WAG-6B/C) 32 CGOIDA thyristors each with 24 DSP2500A diodes. 2x720 A, 850 V.
Pantographs: (WAG-6A) Two Stemman BS 95; (WAG-6B/C) Two Faiveley LV2600

WAG 7

Indian locomotive class WAG-7 (old variant)

Indian locomotive class WAG-7

Main article: Indian locomotive class WAG-7

Variants

WAG 7 - 7H

Specification

Build dates: 1992-2015
Wheel arrangement: Co-Co
Traction Motors: Hitachi HS15250-G (a variant of the standard HS15250 with higher current rating (thicker wire gauge, better insulation); see description under WAP-4.) Motors built by CLW and BHEL.
Gear Ratio: 65:18 (65:16?)
Transformer: CCL India, type CGTT-5400, 5400 kVA, 32 taps.
Rectifiers: Two silicon rectifiers, cell type S18FN350 (from Hind Rectifier), 64 per bridge, 2700 A / 1050 V per cubicle.
Axle load: 20.5 t
Bogies: Alco High-Adhesion bogies, fabricated bogie frame assembly, with unidirectional mounting of traction motors, primary and secondary suspension.
Hauling Capacity: 3010 t
Pantographs: Two Stone India (Calcutta) type AM-12.
Current Ratings: 1350 A / 2 min, 1200 A / 10 min, 960 A / hr, 900 A continuous
Last WAG-7 was manufactured on 24th of September, 2015. Its loco number is 28770 & its serial number is HH-1770

WAG 8

Variants

WAG 8

Specification

Build date: 1996
Wheel arrangement: Co-Co

This is an experimental class of which only one or two were built by BHEL in 1996. They are similar in appearance to the WCAM-2 locos. Power output is similar to the WAG-7 at 5000 hp. There is thyristor chopper control of the DC motors. The class probably shared some components with the WCAM-3 which BHEL was building at the time. They are thought to have Flexicoil Mark IV hi-adhesion bogies.

WAG 9

Indian locomotive class WAG-9

Main article: Indian locomotive class WAG-9

Variants

WAG 9 - 9H

Specification

Build dates: 1996+
Wheel arrangement: Co-Co
Manufacturers: ABB, CLW
Traction Motors: ABB 6FRA 6068 (850 kW, 2180 V, 1283/2484 rpm, 270 / 310 A. Weight 2100 kg) Axle-hung, nose-suspended.
Gear Ratio: 77:15 / 64:18
Transformer: ABB LOT 6500, 4 x 1450 kVA.
Power Drive: Power converter from ABB, type UW-2423-2810 with SG 3000G X H24 Gate turn-off thyristors (D 921S45 T diodes), 14 thyristors per unit (two units). Line converter rated at 2 x 1269 V @ 50 Hz, with DC link voltage of 2800 V. Motor/drive converter rated at 2180 V phase to phase, 971 A output current per phase, motor frequency from 0 to 132 Hz.
Hauling capacity: 4250 t
Bogies: Co-Co, ABB bogies; bogie wheelbase 1850 mm + 1850 mm
Wheelbase: 15700 mm
Axle load: 20.5 t
Unsprung mass per axle: 3.984 t
Length over buffers: 20562 mm
Length over headstocks: 19280 mm
Body width: 3152 mm
Cab length: 2434 mm
Pantographs: Two Secheron ES10 1Q3-2500.
Pantograph locked down height: 4525 mm

References

Broad gauge locomotives of India

Steam

BESA designs	SP SG PT HP AP HG HT

IRS designs	XA XB XC XD XE XF XG XH XP XT XS

World War II designs	AWD CWD AWC

IGR standard designs	WP WG WL (1st) WL (2nd) WM WT WU WV WW

Diesel

Mixed type	WDM-1 WDM 2 WDM 2A, WDM 2B WDM 3 WDM 3A WDM 3A R WDM 3C, WDM 3D WDM 4 WDM 6 WDM 7

Passenger	WDP 1 WDP 2/3A WDP 3 WDP 4 WDP 4B WDP 4D

Goods	WDG 2/3A WDG 3B, WDG 3C, WDG 3D WDG 4 WDG 5

Shunting	WDS 1 WDS 2 WDS 3/4C WDS 4, WDS 4A, WDS 4B, WDS 4D WDS 4C WDS 5 WDS 6 WDS 8

DC electric

Mixed type	WCM 1 WCM 2 WCM 3 WCM 4 WCM 5 WCM 6

Passenger	WCP 1, WCP 2 WCP 3, WCP 4

Goods	WCG 1 WCG 2

AC electric

Mixed type	WAM 1 WAM 2 WAM 3 WAM 4

Passenger	WAP 1 WAP 2 WAP 3 WAP 4 WAP 5 WAP 6 WAP 7

Goods	WAG 1 WAG 2 WAG 3 WAG 4 WAG 5 WAG 5A, WAG 5B WAG 6A WAG 6B, WAG 6c WAG 7 WAG 9

Dual (AC and DC) electric

Mixed type	WCAM 1 WCAM 2/2P WCAM 3

Goods	WCAG 1

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