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3、 () 7III IEC 60331-212011 21 0,6/1,0 Tests for electric and optical fibre cables under fire conditions. Circuit integrity.Part 21. Procedures and requirements. Cables of rated voltage up to and including 0,6/1,0 kV1 0,6/1,0 - , - . , - , , . , -.2 :IEC 60331-11:1999 Tests for electric cables under f
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