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Moisture in Circuit breaker/ D20 RTU

Moisture in Circuit breaker/ D20 RTU

Moisture in Circuit breaker/ D20 RTU

(OP)
Hi All,

I have two completely unrelated questions and would appreciate your input. Ist topic is D20RTU and Second topic is  AEG Vacuum type 38 kV outside metal class enclosed moisture isssue.

Q#1 A) What would be the purpose of a test relay in old   
       Datrac GE RTU ?
    B) My setup has old electromechanical relays
       connected  to a the old DATRAC RTU. I was told
       that there is a low set control interface relay   
       that can be activated by RTU through SCADA and can  
       change the relay settings during certain
       situations. I was wondering, if you have heard of
       some  thing like this and is possible in case of   
       electromechacnical relays.
Q#2 A) A 600 A AEG vacuum breaker is placed outside in
       a substation in a metal enclosed enclosure. I
       was told that it needs very frequent maintenance    
       due to moisture ingress and that leads to tracking  
       on insulators connected to vacuum bottles and
       control arms. What could a possible solution to this problem. Do you think anti condensation heaters will solve the problem.

I would appreciate your input.

RE: Moisture in Circuit breaker/ D20 RTU

Should have had the heaters to start with.  Does it have them and maybe they are not working?

Alan

RE: Moisture in Circuit breaker/ D20 RTU

(OP)
Looks like they were not part of the enclosure because it was a retrofit and before that it had a oil circuit breaker in that enclosure.

But what ideas can be there to avoid some thing like this.

Is anti condensation heaters are the way to go. Could you kindly suggest some brand names that would supply some thing like this.

Thanks

RE: Moisture in Circuit breaker/ D20 RTU

I normally just see heaters in enclosures referred to as 'heaters.'  Is there any difference with an anti condensation heater?  Either way, the enclosure should have a heater if it is outdoors.

RE: Moisture in Circuit breaker/ D20 RTU

They are usually nothing more than a 250 or 500 watt strip heater.  Don't have a mfg. but most any electrical distributor can supply them.  I would also add an adjustable thermostat so they won't be on 24/7.

marks1080:

No difference, but sure sounds more expensive huh!smile

Alan

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