Traction generators for locomotives (1500–4000 hp) and 260–400 t mining dump trucks (1800–2700 kVA)
Traction generators for electric-drive locomotives and mining dump trucks are coupled directly to the diesel engine. They convert its mechanical energy into electricity for the traction motors, and the output is rectified to direct current. Dump truck versions are rated 1800–2700 kVA.
- Locomotives
- engine 1500–4000 hp; 700–1250 V DC; up to 4800 A DC; twin or combined layout
- Mining dump trucks
- 260–400 t, engine 2000–4000 hp; 1500–2000 V AC; 1800–2700 kVA; 120 Hz; 650–1900 rpm; up to 2800 V DC
- Insulation
- class H, VPI of all windings
- Excitation
- brushless with reinforced rotating rectifier (trucks); separate brush excitation (locomotive generator, per manual)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The locomotive version is intended for shunting locomotives, rail grinding trains and locomotives for short main-line hauls, both new and rebuilt. Two layouts are possible. In the first, two generators are mounted on the engine: the main traction generator on the main output shaft and an auxiliary generator driven from a power take-off shaft at the front of the engine. In the second, the traction and auxiliary generators are assembled in one enclosure on a common shaft, which matters when space and mass are limited. Engine power is 1500–4000 hp, rectified voltage is 700–1250 V, and rectified current is up to 4800 A.
The traction generator with separate excitation is built as an eight-pole horizontal two-bearing AC synchronous machine, with the stator in a frame and a rotor with slip rings and brushes. Both bearings are lubricated periodically, and the bearing housing on the non-drive side is insulated against shaft stray currents. For brush excitation the manufacturer produces the DVR100T digital regulator. It is a PWM regulator on MOSFETs powered from the battery; it delivers up to 80 A continuously and 100 A briefly and operates in AVR and FCR modes.
The version for mining dump trucks with an AC drive is designed for machines with a payload of 260–400 t and engines of 2000–4000 hp. Voltage is 1500–2000 V AC, frequency is 120 Hz, speed is 650–1900 rpm with variable speed, and after rectification up to 2800 V DC. The generator is single or double bearing and is supplied to customer requirements. All windings have class H insulation with VPI impregnation, and the windings are reinforced for thyristor and IGBT drives. Cooling is by self-ventilation or by air supplied from the machine's system; excitation is brushless, with a reinforced rotating rectifier. The structure withstands shock loads up to 5 g on any axis, and it is lightened to increase the dump truck's payload.
The manufacturer has been supplying traction generators for mining dump trucks for almost 30 years. Applications include shunting and main-line locomotives, track machinery and mining dump trucks with electromechanical transmission. The generators are produced at the plant in Mankato, Minnesota, USA.
Technical specifications
| Locomotives | engine 1500–4000 hp; 700–1250 V DC; up to 4800 A DC; twin or combined layout |
|---|---|
| Mining dump trucks | 260–400 t, engine 2000–4000 hp; 1500–2000 V AC; 1800–2700 kVA; 120 Hz; 650–1900 rpm; up to 2800 V DC |
| Insulation | class H, VPI of all windings |
| Excitation | brushless with reinforced rotating rectifier (trucks); separate brush excitation (locomotive generator, per manual) |
| Shock resistance | up to 5 g on any axis |
| Cooling | self-ventilation or air supplied from the machine |
| Drives | for SCR and IGBT |
| Regulator | DVR100T (up to 80 A continuous, 100 A short-time) |
Request a price and lead time
Traction generators for locomotives (1500–4000 hp) and 260–400 t mining dump trucks (1800–2700 kVA). We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What engine power are the locomotive traction generators designed for?
For engines of 1500–4000 hp, with rectified voltage of 700–1250 V and rectified current up to 4800 A.
What are the parameters of the generators for mining dump trucks?
For 260–400 t trucks with 2000–4000 hp engines: 1500–2000 V AC, 1800–2700 kVA, 120 Hz, and up to 2800 V DC after rectification.
Are the generators suitable for thyristor and IGBT drives?
Yes, the windings are reinforced for thyristor and IGBT drives, with class H insulation and VPI impregnation. The structure withstands shocks up to 5 g on any axis.
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