DIN Rail Mount Control Transformers

[SteveSmith]

Hi,

Does anyone know of a manufacturer of DIN rail mount control transformers. So far I can only find Hammond -

http://www.hammondpowersolutions.com/docs/product/htp02section1dinrail.pdf

Unfortunately, they do not have a 208V or 220V to 120V 50/60 Hz 75VA transformer.

Steve Smith, C.I.D.
Product Engineer
Staco Energy Products Co.

http://www.stacoenergy.com

 

[busbar]

You may be stuck with ‘group F’ or ‘group G’ transformers like

http://www.microntransformers.com/pdf/micron_domestic_webcat.pdf

You might contact CPT manufacturers and see if they know of an adapter/base for DIN-rail mount of their products. But, isn’t 3½ pounds a bit much for DIN rail?

 

[SteveSmith]

Thanks Busbar. I can find only one manufacturer who makes a decent adapter - Prem Magnetics. We are mounting these transformers horizontally on a panel, so the weight is not a problem - we have actually used a 200 VA rated transformer with no problems.

 

[nbucska]

You can use a separate/stand-alone 220V to 110V trafo connected before the 110V control equipment.

<nbucska@pcperipherals.com>

 

[SteveSmith]

nbucska,

We are trying to make all components rail mounted to allow quick assembly & easy replacement for different options.

 

[amptramp]

If I interpret the catalog correctly, the web site you indicated

http://www.hammondpowersolutions.com/docs/product/htp02section1dinrail.pdf

does offer a 220 to 120 VAC VAC 75VA DIN rail mount control transformer. Type PTD-AA is the series - PTD75MQMJ is the part number.

 

[SteveSmith]

Actually the PTD75MQMJ is as follows:

240/480V : 120V
230/460V : 115V
220/440V : 110V

Steve Smith, C.I.D.
Product Engineer
Staco Energy Products Co.

http://www.stacoenergy.com

 

[amptramp]

Steve,

I agree. So what is the problem?

 

[SteveSmith]

Due to voltage line drop I need the voltage to be a nominal 120V not 110V. Yes, I know that many transformers come in with the secondary voltage a bit high but we have not seen this in the Hammond transformers.

 

[nbucska]

If you use switching power supplies, they should tolerate
a lot of input variation.

<nbucska@pcperipherals.com>

 

[amptramp]

Steve,

What quantities are you looking at? Hammond can supply a 208/120 DIN rail mount in quantity.

 

[SteveSmith]

amptramp,

This is for a new product so AMU is just a guess. We will probably buy only 25-100 pieces at first and go from there.

I've sent a request to Hammond on availability of a 208/120 transformer (last week) and still haven't received a reply.