IMP57 is a fundamental accessory for verifier and engineer to perform, connected with GSC5x, SIRIUS 89, Macrotest 5035, Genius 5080E or Combitest 2019, the Loop/Line impedance and the prospective short circuit current evaluation on a distribution circuit. The high value of test current generated (max 200A) allows quick and accurate measurement (0,1mOhm resolution) also close to power transformer. IMP57 consists in a practical and strong plastic suitcase, it haven't any display and can be connected by RS-232 to the above meters (called Master) to read the measurement results. With 4-wire measurement method the results aren't affected by test leads and it's no necessary perform any preliminary calibration.
