IEEE C57.131-2024 PDF

This standard covers electrical and mechanical performance and test requirements for on-load tap-changers of both resistor and reactor types, de-energized tap-changers, and their motor-drive mechanisms installed in power and distribution transformers, reactors, and voltage regulators. Revision Standard - Active. Electrical and mechanical performance and test requirements for on-load tap-changers of both resistor and reactor types, de-energized tap-changers, and their motor-drive mechanisms installed in power and distribution transformers, reactors, and voltage regulators are covered.