Arrestors in a Loop Feed Padmount Transformer

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dball

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A client has purchased (20) 2,500 kVA, 35kV: 415Y/240 Volt padmount transformers from China. They all are primary dead-front, loop feed construction, however no loop is being installed, ever. We are specifying TNB dead-break primary hardware. I'm trying to determine the most common practice for applying lighting arrestors and also safely pugging the unused wells:
1) Elbow arrestors on the energized conductors and insulated plugs for the unused bushing wells? Or..
2) Is there some product (arrestor/plug) that can be installed on the unused wells?
 
dball said:
A client has purchased (20) 2,500 kVA, 35kV: 415Y/240 Volt padmount transformers from China. They all are primary dead-front, loop feed construction, however no loop is being installed, ever. We are specifying TNB dead-break primary hardware. I'm trying to determine the most common practice for applying lighting arrestors and also safely pugging the unused wells:
1) Elbow arrestors on the energized conductors and insulated plugs for the unused bushing wells? Or..
2) Is there some product (arrestor/plug) that can be installed on the unused wells?
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Why not just install an elbow arrestor on the unused bushing? I guess that would be your number 2. I don't really understand what you are proposing with number 1, how you would connect the elbow arrestor if not in the unused bushing?
 
The termination hardware the contractor is using is shown in the link. https://images.tradeservice.com/OA2QNPBKZAEURZ8S/ATTACHMENTS/DIR100096/HOMCOME01158_1.pdf
I was thinking of maybe a stackable arrestor. (I could be confusing lightning arrestors with surge arrestors.
Showing my ignorance now, but how would one normally safely "plug" the unused bushings? The transformer comes equipped with the bushing inserts.
If a lightning arrestor is advisable, then it seems that accomplishes both, the plugging and the arresting.
 
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