CEI EN 60947-4-1/A1:2013

This Variant includes the following significant technical changes compared to the basic standard: introduction of the starter with engine management; definitions and method of measurement of the power absorption of the control circuit during the maintenance state and the operating state (start); method of measuring the impedance of the poles; requirements for terminals without screws; performance requirements for contactors with couplings; harmonization with Modification 1 of EN/IEC 60947-1:2007, with EN/IEC 60947-2 for operation tests of minimum voltage relays and branch releases, with the North American requirements for short-circuit tests; test requirements for the use of the AC-6b capacitive load; polarity of direct current contactors; dielectric test method in the presence of a built-in varistor; Addition of an extended function (control function) for electronic overload relays.