Tester RET-PT is designed for operation together with the voltamperemeter and phase meter RETOMETR-M3 and serves for determination of polarity of the instrument current transformers and testing of circuit integrity (continuity test).
The continuity test is performed with the help of probes connected to the measuring object. If the circuit is continuous, the LED lights and you’ll hear a beep sound.
To test the current transformer polarity connect probes to CT secondary winding, output clips – to the primary winding, put the switch into “Polarity test” position and start the testing procedure. If the polarity is reverse or the connection is incorrect, the tester LED does not light.