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Prequalification test of Ultra High-Voltage power cable systems
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IEC 62067 is the applicable standard for ultra high-voltage cables of extruded insulation material rated 170 kV and above. This standard was first introduced in 2001 and has been widely adopted by all manufacturers and utilities around the world. A special feature of this standard is the differentiation between the Type Test Sequence and a Prequalification test. The type test sequence applies to the cable and individual accessories, while the prequalification test is intended to test the long-term behavior of the system when installed in normal conditions – buried in the ground and/or in a cable gallery.
KEMA has a special outdoor test facility for the performance of Prequalification tests. The cable can be directly buried (piped or non-piped) in the ground, installed in a duct bank or cable tunnel. Hence, all possible methods of cable installation are possible, and accessories can be installed in any possible manner.
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[download] Brochure KEMA High-Power and High-Voltage Laboratories (.pdf 1.493 kb)
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Type testing of cables and accessories
Prior to the pre-qualification test, cables need to be type
tested.
Read more
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