BS EN BS EN 61858-1 is a European Standard on winding wires which is part one of the multi-series that describes procedures for the evaluation of changes to an established electrical insulation system (EIS) for wire-wound electrotechnical devices and the effect of these changes on the thermal classification of the established EIS.
BS EN BS EN 61858-1 is applicable to EIS used in wire-wound winding electrotechnical devices. The test procedures are comparative in that the performance of a candidate EIS is compared to that of a reference EIS, which has proven service experience in accordance with IEC 60505 or has been evaluated by one of the procedures given in the IEC 61857 series.
BS EN 61858-1 on wire-wound winding EIS is relevant to:
Wire-wound winding are EIS evaluated with the wire-wound coils that are either random or precision wound; not form wound coils.
BS EN 61858-1 provides relatively low-cost and short-time methods by which the user can make modifications to an established EIS by selecting the following evaluating procedures:
BS EN 61858-1 specifies general considerations substitution of phase, the substitution of winding wire, the substitution of impregnating resin, evaluation, substitution with other EIM, evaluation of additions, chemical compatibility of a combination of materials, Single-point thermal ageing test and full thermal aging test that ensures the quality of insulation equipment.
BS EN 61858-1 is useful as it enables the protection of materials through which electric current flows. With BS EN 61858-1 compliant testing, you can maintain EIS integrity and operational efficiency.
BS EN 61858-1:2014supersedes EN 61858:2008.EN. The following significant technical changes with respect to EN 61858:2008:
EN 61858-1:2014
IEC 61858-1:2014