IEC - 61869-1
Instrument transformers – Part 1: General requirements
|Publication Date:||1 October 2007|
|ICS Code (Measurement of electrical and magnetic quantities):||17.220.20|
This International Standard is applicable to newly manufactured instrument transformers with analogue or digital output for use with electrical measuring instruments or electrical protective devices having rated frequencies from 15 Hz to 100 Hz.
This standard is a product family standard and covers general requirements only. For each kind of instrument transformer the product standard is composed by this standard and the relevant specific standard.