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alex

25/06/2007 7:15 AM

Correct setting for a Danfoss magnetic switch.

Hi,

I have a TS with a Danfoss magnetic switch which I have just upgraded
with a used 1.5 HP motor.

Yesterday I was testing it by ripping some boards down. After a minute
or two the motor would shut down. I plugged the motor directly into
an outlet, ripped some wood, and the motor worked fine.

I opened up the switch and noticed a plastic bar that could move over
a index from 2-16.

Any idea what this is used for?

The TS is on a dedicated 20A breaker and the motor draws 16A.

Thanks

Alex


This topic has 1 replies

b

in reply to alex on 25/06/2007 7:15 AM

25/06/2007 9:06 AM

On Jun 25, 10:15 am, alex <[email protected]> wrote:
> Hi,
>
> I have a TS with a Danfoss magnetic switch which I have just upgraded
> with a used 1.5 HP motor.
>
> Yesterday I was testing it by ripping some boards down. After a minute
> or two the motor would shut down. I plugged the motor directly into
> an outlet, ripped some wood, and the motor worked fine.
>
> I opened up the switch and noticed a plastic bar that could move over
> a index from 2-16.
>
> Any idea what this is used for?
>
> The TS is on a dedicated 20A breaker and the motor draws 16A.
>
> Thanks
>
> Alex

Actually, what you have is probably known as a motor-starter,
a self-latching relay _with_heaters_in_series_with_output_.

In many cases, you'd select the heaters to match the max draw.
When properly sized, they'd allow starting surge, and trip overloads
when draw exceeded rating by x% for y or more msec.

Maybe you have adjustable overload/heaters? Since this does
impact your personal safety and that of your neighbors (from fire),
it'd be a Good Thing to understand how it works, and make it
work safely.

Like: ask mfg. and/or DAGS. Or ask at local electrical supply
house where you bought it.

J


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