Pad-mount versus "substation" class transformers
Pad-mount versus "substation" class transformers
(OP)
Under what circumstances would I use a "substation" class transformer instead of a pad-mount transformer with all of the key electrical specifications (kVA, primary kV, secondary kV, oil filled, cable connections on primary and secondary) being equal.
Pad-mount are cheaper yet every industrial installation I've been in uses the "gray" (substation type) transformers and the "green" (pad-mount) ones.
Pad-mount are cheaper yet every industrial installation I've been in uses the "gray" (substation type) transformers and the "green" (pad-mount) ones.






RE: Pad-mount versus "substation" class transformers
Substation style transformers may be economical choice when:
1. public access to the transformer is not a concern
2. incoming cables are overhead, or transformer is close-coupled to separate switchgear
3. additional flexibility to handle overload conditions is required.
In addition, substation style transformers allow you to view the gauges, purge gas, and take oil samples without having to open the transformer cable termination compartments.
Pad-mounts are typically used where tamper-proof enclosures are required due to public access. All the gauges and accessories are located inside the cable termination compartments. In addition they tend to be smaller than substation style and take up less space. They also tend to be more aesthetically pleasing.
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RE: Pad-mount versus "substation" class transformers