Indoor vs. Outdoor Stress Cones
- Thread starter jbond
- Start date
- Status
- Location
- Illinois
- Occupation
- retired electrician
In many cases the only difference between the indoor and outdoor stress cones is the addition of "skirts" on the outdoor ones. That provides additional distance to prevent flashover in wet conditions.
weressl
Esteemed Member
UV and moisture resistance are also factors, but in many cases the indoor and outdoor components are identical, eg. the indoor material is also UV and moisture resistant.
Just a tidbit of useless information:
The pre molded kits, heat shrink or cold shrink, are not "Stress Cones." The term is used very loosely in the industry. They use a capacitive form of stress control where a true stress cone uses geometric stress control. Someone does make a pre molded stress cone for terminations but I have never seen where to buy them. (I have seen them in text books) It is a piece of material in the shape of a cone you use to start the term. Other than that a true stress cone can only be achieved by hand taping with high voltage splicing tape.
The pre molded kits, heat shrink or cold shrink, are not "Stress Cones." The term is used very loosely in the industry. They use a capacitive form of stress control where a true stress cone uses geometric stress control. Someone does make a pre molded stress cone for terminations but I have never seen where to buy them. (I have seen them in text books) It is a piece of material in the shape of a cone you use to start the term. Other than that a true stress cone can only be achieved by hand taping with high voltage splicing tape.
weressl
Esteemed Member
...and the variable thickness of the dielectric taping material acomplishes capacitive form of stress control. So the term 'stress cone' is an unscientific description of what is accomplished. The proper term for both may be 'variable dielectric stress field control termination'.
charlie
Senior Member
- Location
- Indianapolis
I have never heard of an outside stress cone either. The outside ones are either terminators or potheads, both have skirts. :smile:
weressl
Esteemed Member
I have heard it refered to as such, there is a stress relief termination - or stress-cone - inside the potheads.
charlie
Senior Member
- Location
- Indianapolis
I agree with that Laszlo but it is also considered to be part of the pothead. Speaking of potheads, I have not seen one in several (maybe 20) years. :smile:
weressl
Esteemed Member
I seen one just the other day, young kid, really wasted
On the second thought, it is not really that funny.....
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