GenSet AC Switch-over relay problem

[heinz wittenbecher]

In my '76 Transmode the power panel includes a switch-over relay with a
built-in delay. This gives the GenSet time to stabilize before the relay
kicks in moving AC source from shorepower to GenSet.

The Panel, which includes the converter (which I no longer use) is made
by Progressive Dynamics Inc of Marshall, MI as best as I can figure out
by old nameplates. I missed the timewarp today so will try to call them
tomorrow but thought I'd ask if anyone has anything similar that I might
use in case I can't get a replacement.

It seems there is an AC sensor and a capacitor involved. Leads from the
capacitor connect to the relay coil. I'm assuming the delay is caused by
time it takes for the capacitor to charge and therby supply power to the
coil to close the relay contacts, or rather switch them. (The relay is a
double pole/double throw)

I am considering replacing it with a manual drop relay if no alternative
but thought I'd check here first.

Does the GMC factory installation have a time delay before the GenSet
power actually comes on line or does it feed AC to the coach as soon as
it's been started?

Thanks in advance.

Heinz

BTW, does anyone know how/where I might find out who/where might've
built my Transmode? I'm guessing it was an Ontario (Canada) firm, but
have not been able to find any clues in the coach or it's user manual.

 

[jim bounds1]

Heinz,
A new design crossover awitch is available. I have them in 30 & 50 amp
designs. They incorporate a timer circuit which allows the genny to
warm up before it sees the load. I think they are not over $75.00.
Give me a call at work and I'll give you more info.

Jim Bounds gmccoop.com

>
> In my '76 Transmode the power panel includes a switch-over relay with a
> built-in delay. This gives the GenSet time to stabilize before the relay
> kicks in moving AC source from shorepower to GenSet.
>
> The Panel, which includes the converter (which I no longer use) is made
> by Progressive Dynamics Inc of Marshall, MI as best as I can figure out
> by old nameplates. I missed the timewarp today so will try to call them
> tomorrow but thought I'd ask if anyone has anything similar that I might
> use in case I can't get a replacement.
>
> It seems there is an AC sensor and a capacitor involved. Leads from the
> capacitor connect to the relay coil. I'm assuming the delay is caused by
> time it takes for the capacitor to charge and therby supply power to the
> coil to close the relay contacts, or rather switch them. (The relay is a
> double pole/double throw)
>
> I am considering replacing it with a manual drop relay if no alternative
> but thought I'd check here first.
>
> Does the GMC factory installation have a time delay before the GenSet
> power actually comes on line or does it feed AC to the coach as soon as
> it's been started?
>
> Thanks in advance.
>
> Heinz
>
> BTW, does anyone know how/where I might find out who/where might've
> built my Transmode? I'm guessing it was an Ontario (Canada) firm, but
> have not been able to find any clues in the coach or it's user manual.