Optical scanning head for relay testing

LEDs indicate some status information relevant to testing a protection relay, but its binary outputs do not. With the help of the scanning head, such a signal can be converted into a binary signal and used in a test sequence, e.g., for assessment or a trigger condition. The scanning head comes in a set with the ASH1 scanning head adapter for connecting it to the test set’s binary input. For increased flexibility, more than one scanning head can be connected to the test set for reading the protection relay’s different LED indicators.