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DNV GL has started the testing of ultra-high-voltage (UHV) grid components has started at its recently expanded KEMA High-Power Laboratory (HPL) in Arnhem, the Netherlands. KEMA HPL is the world’s largest independent testing and certification laboratory for medium, high and ultra-high voltage TD equipment.


The need to carry higher volumes of electricity over longer distances is leading to the emergence of so-called super grids, large-scale electricity transport networks operating at voltages of 800 kV and above. To support the electricity transmission and distribution (T&D) industry as it transitions to higher transport voltages and super grids, DNV GL expanded its available testing power to 15 GVA. Today, KEMA High-Power Laboratory is the first facility in the world capable of testing UHV electrical grid components including power transformers up to 800 kV and switchgear up to 1200 kV. “The expansion of KEMA will help the T&D industry move into the super grid age with confidence”, said Jacob Fonteijne, Executive Vice President KEMA Laboratories at DNV GL.
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First UHV component, an ABB transformer, successfully passed testing in extended KEMA Laboratories High Power Laboratory at DNV GL.

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DNV GL’s expanded KEMA High-Power Laboratory performs first-ever Ultra-High-Voltage Component Tests