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At our modern cable testing locations, we conduct type- and prequalification tests, as well as long-term tests or tests which accompany the manufacturing process.
We offer the following tests for
medium- and high-power cables to you:
• Power-frequency voltage
• Direct voltage
• Lightning impulse voltage
• Switching impulse voltage
• Partial discharge measurements
• Tan δ - measurements
• Alternation of load
a - up to 500 kV duration voltage
a - up to 3.000 A load current
• Dynamic short-circuit current testing
• Thermic short-circuit current testing
• Humidity and salt-fog
In addition, we test medium-voltage cables up to 24kV:
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Conditioning in the water-bath at 55 ± 5 °C. |
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Ageing over 1 or 2 years at 40 ± 5 °C at power frequency voltage.
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Determination of the residual strength after ageing by voltage step-test up to 300 kV.
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Determination of the water–tree–picture, microscopic examination.
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Ageing test on medium-voltage cables
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