RS 485 Communication cable for Substatio nYard

[ariccardo]

Can anyone please tell me what cable you use for any RS485 communication cable for outside use in a substation? I use to use Belden 9742 but it is not rated for moisture outside etc. Any help would be appreciated.

Thanks

 

[dpc]

Any Type TC instrumentation cable - twisted shielded pair should be listed for wet locations.

Okonite Type P-OS is one options. It comes in either 300 V or 600 V.



David Castor

http://www.cvoes.com

 

[itsmoked]

I'd call a Beldon Rep. It's pure torture to wade thru their mounds of data to find what you need with regard to weather protection.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[jfpe]

How about Belden 3105A?

 

[ariccardo]

I'm not sure these have the the low capacitance you need for this does it?

 

[dpc]

What spec are you trying to meet?

David Castor

http://www.cvoes.com

 

[ariccardo]

I just need a cable that is suitable for rs 485 communication, I am surprised that so many utilities are not using this communication and outside

 

[dpc]

RS-485 isn't really too demanding in terms of the cable characteristics.

I think utilities prefer to run fiber inside substations these days for the inherent safety and noise immunity benefits over a copper connection. Having said that, we have used RS-485 fairly successfully in substations when fiber ports were not available.





David Castor

http://www.cvoes.com

 

[HornTootinEE]

We run RS-485 all over our distribution subs for SCADA. We use standard ethernet cable that we get in a great big roll box. It's buried in conduit though, so we don't have a weather hardened cable.