Article number 00001254

The IMP-Monitor can be used to check the operating times and impedance zones of distance protection devices.

The programme automatically calculates the test quantities for the defined fault impedances and the selected fault type. The required fault impedance is defined in the complex impedance plane or in the distance-time diagram.
In addition, the IMP-Monitor enables the ARC (Auto-Reclose) function of the protective equipment to be checked. The aim of this test is to verify the dead times of a successful or unsuccessful auto-reclose operation.