Indian Railways WAG class

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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[edit]

Manufacturer: Chittaranjan Locomotive Works ( CLW )

Variants
  • WAG 1 - 1S
Specification

WAG 2[edit]

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[edit]

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

WAG 4[edit]

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[edit]

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

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[edit]

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:
  • 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[edit]

Indian locomotive class WAG-7 (old variant)
Indian locomotive class WAG-7 built by BHEL
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 24 September 2015. Its loco number is 28770 & its serial number is HH-1770

WAG 8[edit]

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[edit]

Indian locomotive class WAG-9
Variants
  • WAG 9 - 9H
Specification
  • Build dates: 1996+
  • Wheel arrangement: Co-Co
  • Manufacturers: ABB, CLW, BHEL
  • 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

See also[edit]

References[edit]