Tractive Effort of a Voyager

[ABB125]

Does anyone know what the tractive effort of a voyager is?

I know the power available in each vehicle (520kW engine*, 2x275kW motors), but not the tractive effort. Is there a way I can work it out? An approximation/rule of thumb should be sufficient.

Also, how much of the power is lost between the engine(s) and rail? Rule of thumb is, I believe, 80% of engine power is available at the rail (accounting for electrical losses etc), but then some more will be used up by lighting, heating etc.

Thanks


*Used to be 560kW, but they were derated at some point in the past. Hence the power of the traction motors exceeding the power of the engine.

 

[hexagon789]

Does anyone know what the tractive effort of a voyager is?

I know the power available in each vehicle (520kW engine*, 2x275kW motors), but not the tractive effort. Is there a way I can work it out? An approximation/rule of thumb should be sufficient.

Also, how much of the power is lost between the engine(s) and rail? Rule of thumb is, I believe, 80% of engine power is available at the rail (accounting for electrical losses etc), but then some more will be used up by lighting, heating etc.

Thanks


*Used to be 560kW, but they were derated at some point in the past. Hence the power of the traction motors exceeding the power of the engine.

The traction motors are rated at continuous 235kW, not 275kW.

Taken from the 2001 official VT spec sheet. Sadly that same document does not give tractive efforts, but bear with me.

 

[ABB125]

The traction motors are rated at continuous 235kW, not 275kW.

Taken from the 2001 official VT spec sheet. Sadly that same document does not give tractive efforts, but bear with me.

Platform 5 says 275kW, but doesn't specify whether that's continuous or maximum. I'm guessing that it'll be maximum then!

 

[hexagon789]

Platform 5 says 275kW, but doesn't specify whether that's continuous or maximum. I'm guessing that it'll be maximum then!

Presumably so, I understand the motors (also Alstom) in 458s are 225kW cont., 265kW short-term. So 235/275 seems reasonable.