Monitoring Relay for Tap Changers
The monitoring relay for tap changers, also known asthe protection relay for tap changers or oil flow relay, isa monitoring device for insulating liquid-filled tapchangers with conservators. It protects the tap changerand the transformer from damage. The monitoringrelay responds to excessive oil flow in the direction ofthe conservator and generates a signal disconnectingthe tap changer and the transformer immediately fromvoltage supply.
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