Safety tester AT3-IIIE Checks 1- and 3-phase consumers and extension cables in connection with the SECUTEST S-II and S-III external testing devices
Backup protection when checking faulty specimens thanks to built-in differential current monitoring with power-off
Function test of automatic power-off via self-test button
Prevents short circuits and the triggering of mains fuses thanks to pre-inspection level
Automatic adjustment to set program of SECUTEST-Sxx testing device with transfer of measured values
Check of earth wire resistance, insulation resistance, alternative leaking current, dielectric strength, differential current and touch current in connection with SECUTEST SII and SIII