BS EN 61869-1:2009 PDF

BS EN 61869-1:2009 Instrument transformers. General requirements BS EN 61869-1 is an International Standard which 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. BS EN 61869-1 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. Contents of BS EN 61869-1: 1 Scope 2 Normative references 3 Terms and definitions 4 Normal and special service conditions 5 Ratings 6 Design and construction 7 Tests 8 Rules for transport, storage, erection, operation and maintenance 9 Safety 10 Influence of products on the natural environment Annex A (normative) Identification of test specimen Annex B (informative) Rules for transport, storage, erection, operation and maintenance Annex C (informative) Fire hazard Annex D (informative) Sample test Bibliography