Shaoshan 4 improved electric locomotive

Shaoshan 4 improved electric locomotive is an 8-axle freight locomotive. The locomotive consists of two identical four-axle locomotives connected by a coupler and a windshield. The two workshops are equipped with high-voltage connectors for the electrical system, reconnection control cables and air brake system control ducts. The entire vehicle can be synchronously controlled from the driver's cab of any one of the vehicles. The two locomotives can also be separated and used independently as a four-axle locomotive.

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Details

Main Technical Features

1. Use unequal three-section half-controlled bridge thyristor phase-controlled voltage regulation and third harmonic filter to improve the power factor of the locomotive; the traction characteristics are controlled by constant current and quasi-constant speed characteristics. Resistor braking is fed-in resistor braking.
2. Adopt low-position inclined drawbar, which has high adhesion performance.
3. Equipped with idling protection device and axle load transfer compensation device, which improves the locomotive's adhesion and traction.
4. Adopt forced self-steering oil circulation and all-aluminum plate-warped oil radiator.
5. It adopts DK-1 type brake and has electro-pneumatic braking and air-electric combined braking functions.
6. Adopt multi-functional electronic control devices including traction control, electric brake control, axle load compensation control, idling protection control, power factor compensation control, air-electric combined braking control, etc.

The Main Technical Parameters

Current system	AC 25kV 50Hz
gauge	1435mm
shaft type	2（Bo-Bo）
Axle load	23t
Locomotive curb weight	2×92t
Continuous power	6400kW
Maximum operating speed	100km/h
Locomotive sustained speed	51.5km/h
Sustained traction	450kN
Starting traction	628kN
Electric braking method	Feedback resistor braking

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