Utility Relay Company 1-ZERO-HERTZ-TS

The Model B-290 test set is specifically designed for secondary injection testing of the ZERO-Hertz DC trip unit. Pick-up and multiple points on the time-current curves can be quickly tested using this test set. The test set can perform pick-up and time delay trip tests for either the transducer inputs or the shunt inputs depending on the model ZERO-Hertz DC trip unit. The ZERO-Hertz DC trip unit is micro-controller based and includes a 16-character liquid crystal display (LCD).