DIN EN 60051-1 VDE 0411-51-1:2017-11

IEC 60051 is published in separate parts according to the following structure and under the general title Direct acting indicating analogue electrical measuring instruments and their accessories. Part 1: Definitions and General Requirements Common to all Parts. Part 2: Special Requirements for Ammeters and Voltmeters. Part 3: Special Requirements for Wattmeters and Varmeters. Part 4: Special Requirements for Frequency Meters. Part 5: Special Requirements for Phase Meters, Power Factor Meters and Synchroscopes. Part 6: Special Requirements for Ohmmeters (Impedance Meters) and Conductance Meters. Part 7: Special Requirements for Multi-function Instruments. Part 8: Special Requirements for Accessories. Part 9: Recommended Test Methods. Parts 2 to 9 are not complete in themselves and shall be read in conjunction with this Part 1. All of these parts are arranged in the same format and a standard relationship between subject and clause number is maintained throughout. This re-arrangement will assist the reader of IEC 60051 to distinguish information relating to the different types of instruments.