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IEC

PDF Standards IEC 60660 Ed. 2.0 b:1999

Insulators – Tests on indoor post insulators of organic material for systems with nominal voltages greater than 1 000 V up to but not including 300 kV
standard by International Electrotechnical Commission, 10/29/1999

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IEC

PDF Standards IEC 60335-2-71 Ed. 2.1 b:2007

Household and similar electrical appliances – Safety – Part 2-71: Particular requirements for electrical heating appliances for breeding and rearing animals CONSOLIDATED EDITION
standard by International Electrotechnical Commission, 05/23/2007

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