Re: Dual Voltage for R1 2001
Bill Bolton
Friday, September 14, 2001 9:53 PM
On Fri, 14 Sep 2001 20:35:44 -0400, Joseph Spinella wrote:
Hi Joseph... I see you are a fellow IEEE member!
Again, I don't know the specific answer, but in the case of tram
designed originally for 600V from the ground up, you'd either need to
do some significant redesign/engineering work on the whole internal
power system, or else fit something like a solid state static inverter
that took 600V-750V DC in and gave 600V DC out. That way you would
only need to have 750V insulation from the trolley poles to the
inverter and could still use 600V insulation on the output side in the
controllers, line breakers, lighting circuits, motors etc .
Now a days the size of inverter needed to cope with a 4 x 40HP motor
tram is not large, so it could probably be located in some
out-of-the-way location without materially impacting the cosmetic
appearance of the car.
Cheers,
Bill
Bill Bolton
Sydney, Australia
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Hi Joseph... I see you are a fellow IEEE member!
How does one wire for 600V and 750V? I know how it's done for
600-1200V.
Again, I don't know the specific answer, but in the case of tram
designed originally for 600V from the ground up, you'd either need to
do some significant redesign/engineering work on the whole internal
power system, or else fit something like a solid state static inverter
that took 600V-750V DC in and gave 600V DC out. That way you would
only need to have 750V insulation from the trolley poles to the
inverter and could still use 600V insulation on the output side in the
controllers, line breakers, lighting circuits, motors etc .
Now a days the size of inverter needed to cope with a 4 x 40HP motor
tram is not large, so it could probably be located in some
out-of-the-way location without materially impacting the cosmetic
appearance of the car.
Cheers,
Bill
Bill Bolton
Sydney, Australia
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Monitoring Service trial
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