Short answer: transformer accessory RFQs should include transformer type, rated voltage, rated current, bushing interface, tap changer requirement, protection accessories and drawing dimensions.
| Bushings | Confirm voltage class, current rating, creepage distance, material and mounting dimensions. |
|---|---|
| Connectors | Confirm conductor size, terminal shape, palm hole and material transition. |
| Protection | Confirm arrester, fuse, temperature indicator, oil level indicator or pressure relief device requirement. |
| Documentation | Provide transformer nameplate, drawing, accessory model and standard. |
Transformer accessories often look similar but differ in mounting dimensions, creepage distance and current rating.