"Outline of Investigation for IEC Type ""2"" Coordination Short Circuit Tests of Electromechanical Motor Controllers in Accordance with IEC Publication 947-4-1 (Issue 3)"
The requirements in this Outline of Investigation are for verification of short-circuit tests to be conducted on Type ?2? coordinated electromechanical motor controllers as defined by and in accordance with the Standard for Low Voltage Switchgear and Controlgear@ Part 4: Contactors and Motor-Starters@ International Electrotechnical Commission (IEC) Publication 947-4-1. These requirements cover electromechanical motor controllers@ such as manually or magnetically operated contactors with or without thermal or solid state overload relays@ combination motor controllers with discrete components@ and starters that are provided with short circuit protective devices@ that have been investigated for compliance with the requirements in the Standard for Industrial Control Equipment@ UL 508@ and where the main contact voltage rating does not exceed 1000 V ac or 1500 V dc. The requirements in this Outline of Investigation are applicable only to those specific motor controllers and short circuit protective devices (SCPD) which have been coordinated together by the manufacturer.