I seem to remember that motors for things like electric locomotives have a 5
minute rating and a 1 hour rating, and the 5 minute rating is quite a lot
higher. That gives more power to get the train rolling and faster short term
acceleration.
73
Peter G3RZP
========================================
Message Received: Mar 10 2013, 06:31 AM
From: "Bill Turner"
To: "Amps"
Cc:
Subject: Re: [Amps] rms Volts, Amps and Watts
ORIGINAL MESSAGE:
On Sat, 9 Mar 2013 22:10:33 -0800, Jim wrote:
>
>## How the hell can u possibly run a 5 peak hp motor on a 120 v outlet... u
>can’t.
REPLY:
Yes you can. You're forgetting about inertia. For a fraction of a second,
the mass of the rotating parts can indeed deliver lots of horsepower. Is
it sustainable? No, that's why it's peak.
Is that useful? No, but it is true. And that's why they get away with it.
73, Bill W6WRT
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|