Test on gases evolved during combustion of materials from cables -- Determination of acidity (by pH measurement) and conductivity
This part of IEC 60754 specifies the apparatus and procedure for the determination of the *potential corrosivity* of gases evolved during the combustion of materials taken from electric or optical fibre cable constructions by measuring the *acidity (pH)* and *conductivity* of an aqueous solution resulting from the gases evolved during the combustion. The heating (combustion) procedure of this part of IEC 60754 is the same as in IEC 60754-3.
The general method specified in this standard is intended for the testing of individual components used in a cable construction. Formulae are given for the calculation of a weighted value for a combination of materials found in a specified cable. The use of this method will enable the verification of relevant requirements for either individual components or combined components of a cable construction stated in the appropriate cable specification.
A simplified method is included for the testing of individual components where it is required only to demonstrate compliance with a stated performance requirement for quality control purposes.
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