IEC 60331-1:2009 pdf Tests for electric cables under fire conditions - Circuit integrity- Part 1: Test method for fire with shock at a temperature of at least 830。C for cables of rated voltage up to and including 0,6/1 ,0 kV and with an overall diameter exceeding 20 mm

IEC 60331-1:2009 pdf Tests for electric cables under fire conditions – Circuit integrity- Part 1: Test method for fire with shock at a temperature of at least 830。C for cables of rated voltage up to and including 0,6/1 ,0 kV and with an overall diameter exceeding 20 mm

IEC 60331-1:2009 pdf Tests for electric cables under fire conditions – Circuit integrity- Part 1: Test method for fire with shock at a temperature of at least 830。C for cables of rated voltage up to

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