[PRCo] Re: Fineview___PCCs

[Boris Cefer]

Yes, our system is 600 V too. In fact, 600 V is a nominal value; our
equipment is designed to work between 400 and 720 V DC. And even if the
regenerative braking from a new equipment pushes about 800 Volts to line,
the old accelerator-equipped (currently about 40% of our fleet) stuff
doesn't suffer any significant problems.
But why do you ask?

B

----- Original Message -----
From: "Derrick J Brashear" <shadow at dementia.org>
To: <pittsburgh-railways at dementia.org>
Sent: Saturday, March 13, 2004 7:28 AM
Subject: [PRCo] Re: Fineview___PCCs


> On Fri, 12 Mar 2004, Boris Cefer wrote:
>
> > Maintenance specification we use here for drum brake says that each car
must
> > be tested by removing of drum brake fuse and pressing power pedal to
reach
> > starting current of 290 Amps - drum brakes must hold the car (on dead
level
> > track). 290 Amps cause approximately the same traction effort as 9.5 %
> > downgrade. Sometimes we experience drums which are sufficient to hold
the
>
> Assuming it's also a 600vdc system like those here, that implies 6 times
> as much energy to hold it on a hill as a passenger automobile. Don't ask
> why I know that.
>
>