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1、November 2005 IEC 60939-1 (Second edition 2005) Passive filter units for electromagnetic interference suppression Part 1: Generic specification CORRIGENDUM 1 NOTE This corrigendum constitutes a revision of the structure of subclause 4.5, as well as an addition to subclause 4.10.3. Page 17 4.5 Voltag
2、e tests Replace the text from 4.5 to the end of 4.5.3.5 by the following: 4.5 Insulation resistance For filters fitted with a discharge resistor, this measurement can only be made with the discharge resistor disconnected. If the discharge resistor cannot be disconnected without the filter being dest
3、royed, the test shall be omitted for lot-by-lot tests; for qualification approval and periodic tests, where the discharge resistor cannot be disconnected without the filter being destroyed, the sample shall consist of filters specially made without discharge resistors. 4.5.1 Measuring voltage Before
4、 the measurement is made, the filters shall be fully discharged. Unless otherwise specified in the relevant specification, the insulation resistance shall be measured, at the d.c. voltage specified in Table 2. Table 2 DC voltage for insulation resistance Voltage rating of the filter Measuring voltag
5、e UR or UC 1 750 Max. burning time s Additional requirements A 15 30 60 120 3 B 10 20 30 60 10 C 5 10 20 30 30 Burning droplets or glowing parts falling down shall not ignite the tissue paper 4.23 Active flammability This test is not applicable to filters that do not incorporate capacitors. This tes
6、t is not required for filters that incorporate capacitors certified as according to 4.18 of IEC 60384-14. If the filter is within a metal case, this test is not required regardless of the capacitors used. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicen
7、see=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 20:59:47 MDTNo reproduction or networking permitted without license from IHS -,-,- 60939-1 IEC:2005(E) 31 If capacitors which do not follow 4.18 of IEC 60384-14 are used in a filter without metal case, the test according to 4
8、.18 of IEC 60384-14 shall be conducted on the individual capacitors in turn after they have been removed from the filter. 4.24 Solvent resistance of marking 4.24.1 The filters shall be subjected to test XA of IEC 60068-2-45 with the following details: a) solvent to be used: see 3.1.2 of IEC 60068-2-
9、45; b) solvent temperature: 23 C 5 C; c) conditioning: method 1 (with rubbing); d) rubbing material: cotton wool; e) recovery time: not applicable unless otherwise stated in the detail specification. 4.24.2 After the test, the marking shall be legible. 4.25 Component solvent resistance 4.25.1 Initia
10、l measurements The measurements prescribed in the relevant detail specification shall be made. 4.25.2 The filters shall be subjected to test XA of IEC 60068-2-45 with the following details: a) solvent to be used: see 3.1.2 of IEC 60068-2-45; b) solvent temperature: 23 C 5 C; c) conditioning: method
11、2 (without rubbing); d) rubbing material: not applicable; e) recovery time: 48 h unless otherwise stated in the detail specification. 4.25.3 The measurements prescribed in the relevant specification shall then be made and the specified requirements shall be met. _ Copyright International Electrotech
12、nical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 20:59:47 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Electrotechnical Commission Provided by IHS under license
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23、cal Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 20:59:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISBN 2-8318-7856-X -:HSMINB=ZU: ICS 31.160 Typeset and printed by the IEC Central Office GENEVA, SWITZERLAND Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/07/2007 20:59:47 MDTNo reproduction or networking permitted without license from IHS -,-,-