Medium voltage switch close coupled to transformer

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Natfuelbilll

Senior Member
A new medium voltage switch is installed close coupled to a transformer. The breaker in this switch is of draw-out construction. Part of the assembly that operates the draw out rails is mounted on the side of the switch. Part of this assembly include a 12" long metal spring used to maintain tension on the draw out rail assembly. You can see this spring by looking through open cover of the transformer.

Normally if this was a standalone switch the spring and arm would be covered by a steel plate.

The manufacturer says I should not be concerned about the spring breaks - but I am - sparks are gunna happen!

I'm looking for a Code or Standards that would disallow this spring from being anywhere in the transformer compartment.
 

Fnewman

Senior Member
Location
Dublin, GA
Occupation
Sr. Electrical Engineering Manager at Larson Engineering
If there is an applicable code or standard, it would likely be NEMA or UL.
 
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