Relay Testing

IT-Monitor

The IT-Monitor is the ideal tool for checking the operating times and directional sensitivity of overcurrent relays with current-dependent and current-independent time delays. The programme automatically calculates the test values for the defined test current and selected fault type. The amplitude of the test current is defined in the current-time diagram. The reaction of the device under test is recorded during the test. Test evaluation is performed with reference to the defined tripping characteristic of the protection device. This can be freely configured in the programme. In addition, the programme already contains all standard characteristics according to IEC and ANSI. The IT-Monitor also has a function for checking the directional control. In this case the relay is supplied with the relevant voltages as well as the currents.