AS NZS 62852:2020 pdf download.Connectors for DC-application in photovoltaic systems一Safety requirements and tests (IEC 62852:2014, MOD).
5.6 Resistance to deterioration
If deterioration of specific parts might impair safety, the resistance of those parts to expected
stresses shall be verified by the execution of the test program in Clause 6.
5.7 General design
5.7.1 Mechanisms which are used for mounting the connector and/or termination of conductors shall not be used to fix live parts in the connector housing, if it may impair the proper function of the mechanism or reduce the clearance and creepage distances below the requirements according to 5.18.
5.7.2 Connectors shall be so designed that connection of conductors of the type and cross- sectional areas as specified by the manufacturer is possible. Besides the termination of the conductor, care shall be taken that no damage of the insulation is possible, e.g. by avoiding sharp edges.
5.7.3 Cables connected to the connector shall be suitable for use in photovoltaic systems.
The values of the rated current and the rated voltage shall have at least the rated values of
the connector. Cables shall be flexible and the conductor shall be at least class 5 according to
IEC 60228.
5.7.4 Non-rewirable connectors shall be so designed that:
— the flexible cable cannot be separated from the connector without making it permanently useless,
— the connector cannot be disassembled or parts of it cannot be removed by hand or by using a general purpose tool, for example a screwdriver, as intended,
— means are provided to prevent live parts, e.g. free strands of a conductor, from reducing the minimum insulation distance between such live parts and all accessible external surfaces of the connector, with the exception of the engagement face of the male connector,
— a connector becomes useless for further use when for the re-mounting, other parts than the original ones are necessary,
— connectors with non-rewirable terminations are also considered as rewirable, if they are reconstituted with original parts and with tools of the manufacturer, if applicable.
If this cannot be granted by the design or manufacturing process itself, the in-process test schedule according to 6.4 or another test of the same safety level shall be carried out.
5.8 Design of a free connector
In a free connector, the wires shall be protected against shear and tensile stress at the termination and be secured to prevent twisting.
This requirement does not apply to
a) free connectors for termination to cables in fixed mountings (plug connection in the sense of a detachable connection),AS NZS 62852 pdf download.