20 kV Cast Resin Dry-Type Transformer

Overview: A 20 kV cast resin dry-type transformer is a candidate for an indoor medium-voltage system where a liquid-filled unit is not the preferred arrangement. The final winding, insulation and cooling design should be matched to the system specification.

Where this configuration is considered

Typical evaluation contexts include industrial electrical rooms, public infrastructure and commercial distribution connected to a 20 kV class network. Space for air movement, cable termination and maintenance must be checked early.

Information to define before quotation

Clarify rated kVA, primary and secondary voltages, frequency, vector group, tap range, impedance, expected loading and harmonics. Ask for the proposed enclosure, cooling method, temperature-rise limits, losses, sound data and routine-test scope.

International standards to review

Reference standards may include IEC 60076-1:2011, IEC 60076-11:2018. The applicable editions, clauses, conformity evidence and test scope must be agreed for the final design and destination market. This page does not claim certification or guaranteed compliance for an unspecified product.

A useful question for the technical brief

Will the installation use a ventilated room, a protective enclosure, or an integrated switchgear lineup?

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