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Custom‑Built 40kA High‑Current Impulse Test Solution for Large‑Scale Offshore Wind Farm

Apr 19, 2026
HVHIPOT Electric Co., Ltd. has delivered a fully custom‑engineered 40 kA high‑current impulse test complete solution for one of Asia’s large‑scale offshore wind farm projects, providing reliable testing validation for wind turbine units and submarine export cables under extreme electrical stress conditions.
Offshore wind assets operate in harsh marine environments, exposed to frequent lightning surges, transient short‑circuit impacts, high humidity and salt corrosion. Wind turbine key components and submarine power cables must maintain robust insulation integrity and withstand severe impulse current stress throughout their long‑term service life. Conventional standard test systems cannot fully replicate real‑world offshore fault conditions, which created clear demand for a tailored high‑current impulse testing setup for this project.
Our engineering team conducted in‑depth analysis of site requirements, IEC offshore wind testing specifications, submarine cable capacitance characteristics and turbine‑level impulse withstand criteria. The complete solution covers impulse current generation unit, high‑precision measurement & acquisition system, integrated safety interlock control, test software and auxiliary accessories. Capable of delivering peak impulse current up to 40 kA, the system simulates lightning strike and short‑circuit transient events, performing comprehensive evaluation on insulation performance, structural mechanical stability and anti‑surge capacity of wind turbine assemblies and submarine cables. All test waveforms, measurement accuracy and safety mechanisms comply with relevant international standards for offshore renewable energy equipment.
During factory acceptance and technical hand‑over, the system achieved stable waveform output, repeatable test data and complete safety protection logic, fully satisfying the project’s type‑testing and pre‑commissioning verification requirements. This solution helps identify potential insulation defects in advance, lowers operational failure risks for offshore wind facilities, and supports safe, reliable grid‑connection of large‑capacity offshore wind generation.
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