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  • BSI
    PD IEC TR 63139:2018 Explanation of the mathematical addition of working voltages, insulationbetween circuits, and use of PELV, in TC 34 standards
    Edition: 2018
    $435.35
    / user per year

Description of PD IEC TR 63139:2018 2018

This document is related to the insulation coordination in TC 34 standards and provides explanations on mathematical addition of working voltages, insulation between circuits, use of protective extra low voltage (PELV) and insulation between LV supply and control line conductors in order to cover new technologies associated with the use of LED light sources and controllable products.

It describes in which way the addition of supply voltages and working voltages can be arranged for an assessment of the electrical insulation requirements (e.g. creepage distances and clearances) in a system if a first failure occurs.

Furthermore the actual failure scenarios given in IEC 60598-1:2014 and IEC 60598- 1:2014/AMD1:2017, Annex X and IEC 61347-1:2015, Clause 15 are explained in greater detail and the rationale behind the protective requirement for each situation is given (e.g. possible LV primary to ELV secondary does not lead to an overburden of the insulation in the second circuit).

This document also describes the possibility to increase immunity and reliability of electronic circuits, used in combination with LEDs, with the use of PELV and the associated safety consequences for this system.

The insulation between LV supply and control line conductors is also important and this document explains why this is an essential safety consideration for a complete installation system.



Standard NumberPD IEC TR 63139:2018
TitleExplanation of the mathematical addition of working voltages, insulationbetween circuits, and use of PELV, in TC 34 standards
StatusDefinitive
Publication Date2018-10-25
Identical National Standard OfIEC TR 63139:2018
DescriptorsCircuit analysis, Circuit elements, Electric circuits, Circuit theory, Insulation (electrical), Insulation devices (electrical), Voltage, Lamps, Lamp standards
ICS29.140.01 Lamps in general
CommitteeCPL/34
ISBN978 0 580 98923 0
PublisherBSI
Pages24

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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