The PIC-Monitor can be used to determine the pick-up and drop-off values of protection relays.
This could also be the pick-up value of the second instantaneous tripping set (high set) of an overcurrent relay, for example. The test quantities are issued as stair-step pulsed ramps for this purpose. The amplitudes are increased until the pick-up value is reached. To ascertain the drop-off value, ARTES then automatically switches to a stair-step descending ramp.
The programme calculates the test quantities fully automatically with reference to the start and end values set for the ramps and to the fault loop which has been selected. The reaction of the device under test is recorded in real time during the test and subsequently evaluated.