IEC 61558-1:1997/ISH1:2003
(Main)Interpretation sheet 1 - Safety of power transformers, power supply units and similar - Part 1: General requirements and tests
Interpretation sheet 1 - Safety of power transformers, power supply units and similar - Part 1: General requirements and tests
Interpretation of subclause 19.8
General Information
- Status
- Published
- Publication Date
- 09-Dec-2003
- Technical Committee
- TC 96 - Transformers and reactors
- Current Stage
- DELPUB - Deleted Publication
- Start Date
- 05-Sep-2005
- Completion Date
- 14-Feb-2026
Relations
- Effective Date
- 05-Sep-2023
- Effective Date
- 05-Sep-2023
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Frequently Asked Questions
IEC 61558-1:1997/ISH1:2003 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Interpretation sheet 1 - Safety of power transformers, power supply units and similar - Part 1: General requirements and tests". This standard covers: Interpretation of subclause 19.8
Interpretation of subclause 19.8
IEC 61558-1:1997/ISH1:2003 is classified under the following ICS (International Classification for Standards) categories: 29.180 - Transformers. Reactors. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 61558-1:1997/ISH1:2003 has the following relationships with other standards: It is inter standard links to IEC 61558-1:2005, IEC 61558-1:1997. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
IEC 61558-1:1997/ISH1:2003 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
IS 01 Interpretation of subclause 19.8
IEC 61558-1:1997, First edition
Safety of power transformers, power supply units and similar– Part 1: General
requirements and tests
INTERPRETATION SHEET
Introduction:
WG1 of TC96 has been requested to provide urgently a clarification of the bridge allowed by
resistors or capacitors between different conductive parts.
A clarification of subclause 19.8 of IEC 61558-1 Ed.1 has been agreed by WG1 of TC96 as
follows:
“19.8 Conductive parts separated by double or reinforced insulation, e.g. live parts and
the body or primary and secondary circuits, may be bridged (conductive bridge) by
resistors or Y2 capacitors provided that they consist of at least two separate components
whose impedance is unlikely to change significantly during the lifetime of the transformer.
If the resistors are used they shall comply with the requirements of test (a) in 14.1 of
IEC 60065. If capacitors are used they shall comply with the relevant requirements of
IEC 60384-14.
Where two capacitors are used in series, they shall each be rated for the total working voltage
ac
...
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