The Model 590F is a broad term used to describe the measurement abilities of a series of clamp on CT models used in conjunction with our popular offline CT tester called the 590G-V2. Combined they are capable of testing the CT ratio and phase accuracy on an active or live power network. The 590F has optional configurations for either High Voltage (HV) or Low Voltage (LV) line systems. A chosen 590F clamp on CT or (Clip-on) is specifically calibrated for use with the chosen line voltage and current to an accuracy of 0.05%.
In situations where access to the CT secondary circuit is quite removed from a Clip-on such as the 590F1 for example, one operator must connect the secondary lead from the 590G-V2 to the CT and then enter in the C.T test data. Another operator must hoist the 590F1 onto the HV line. From this point it will then take about one minute for the 590F1 to auto range and compensate correctly after which it will begin to send the measurements to the 590G-V2.