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Crimp and Lug Testing

BS EN 61238-1 is the standard that covers compression and mechanical connnectors for power cables at rated voltages of up to 36kV. There are two classes defined within the standard - Class A which includes short circuit testing and Class B which does not include this testing.

Crimp testing and lug testing sees three samples subjected to tensile testing, The samples must be 40x the cross-sectional area in mm2 for aluminium conductors, and 60x the cross-sectional area in mm2 for copper conductors (in N) up to a maximum of 20,000N.

A further six samples are the subjected to tests in the following sequence:

 

Class A
Initial resistance measurements
Heat cycling to raise the reference conductor to 120oC
Resistance measurements after 200 cycles, before short circuit
Short circuit at 25kA raising the conductor to between 250oC to 270oC
Resistance measurements after 200 cycles after short circuit
Resistance measurements every 75 cycles up to a total of 1000 cycles
Class B
Initial resistance measurements
Heat cycling to raise the reference conductor to 120oC
Resistance measurements after 250 cycles
Resistance measurements every 75 cycles up to a total of 1000 cycles

 

For both Class A and Class B tests on crimps and lugs, the variations in resistance are analysed statistically.

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About Eland Cables

About Eland Cables

Established in 1975, Eland Cables is a supplier of power, data, instrumentation and control cables and cable accessories to the world's most demanding industries and to some of its most prestigious projects. Our reputation is built on an unswerving focus on quality, technical expertise and customer service.

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Our focus on quality has resulted in our in-house specialist cable testing facility securing the ISO 17025 accreditation. This certifies the competence, impartiality and performance capability of our laboratory and its evaluations. In turn, it means peace of mind for our customers with regard to the quality of the cables they source from us.

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Our highly-qualified technical team is on hand to provide technical support with all aspects of cable selection, technical specification, regulatory requirements, and bespoke cable design and manufacture.

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