Leak Prevention & Detection of MV Gas-Insulated RMU Switchgear

2026-10-12 For SF6-insulated Ring Main Units (RMU) or GIS, the leakage rate requirement depends on whether the gas compartment is classified as a closed pressure system or a sealed pressure system under IEC standards. 1. IEC 62271-1 (General HV Switchgear Standard) IEC 62271-1 defines: Gas system type Maximum SF6 leakage rate Closed pressure system ≤ 0.5% per year […]

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Why Do Some Switchgear Have One CT While Others Have Three?

2026-10-12 Current transformers are widely used in power systems; their function is to induce a small current—proportional to the current flowing through a high-current cable—for use in metering and relay protection. What is the function of a current transformer? To ensure the safe and economical operation of a power system, it is essential to monitor

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Main Structure of Our New Production Building Successfully Topped Out

2026-10-12 On October 11, 2026, the main structure of our new production building was successfully topped out, marking a major milestone in the project’s construction. This achievement lays a solid foundation for the remaining construction work and the building’s completion and commissioning. With the main structure now complete, the project will move on to the

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Strengthening Global Partnerships Advancing SF6-Free Solutions at Hannover Messe 2026

2026-04-24 From April 20 to 24, 2026, we proudly exhibited at Hannover Messe 2026 in Germany, marking our third consecutive year at this premier global industrial event. Throughout the exhibition, we had the pleasure of reconnecting with our long-standing partners, further deepening our cooperation and mutual trust. We also engaged in detailed and constructive discussions

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Necessity of Short-Circuit Making Capability for Earthing Switches in MV RMUs

2026-01-05 Functional Role of the Earthing Switch In medium-voltage ring main units (RMUs), the earthing switch (ES) is often regarded as a device intended solely for maintenance grounding. However, under several credible operating and fault conditions, the earthing switch may be required to make onto a live circuit and withstand the resulting short-circuit current. For

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Good News! Our 24kV and 38kV Permanent Magnetic Auto Reclosers Passed the Full Tests at XIHARI

2025-12-16 Recently, our company’s independently developed 24kV and 38kV permanent magnetic auto reclosers successfully completed all project tests at the Xi’an High Voltage Apparatus Research Institute (XIHARI). ◆ The 24kV/16kA permanent magnet drive recloser passed the T100 test according to IEC 62271-111.7.103, with the rated operating sequence being O-0.1s-CO-1s-CO-1s-CO-60s-CO, and passed all three tests successfully. ◆ The 38kV/16kA permanent

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Syarikat Kami Berjaya Membangunkan RMU Luaran Kos Efektif

2024-05-30 Sebagai tindak balas kepada keperluan pelanggan asing baharu, syarikat kami telah berjaya membangunkan unit utama cincin ekonomi yang boleh digunakan di luar dan di dalam rumah. Selepas ujian, sifat mekanikal dan pelbagai penunjuk elektrik semuanya memenuhi keperluan pelanggan. Pelanggan kami sangat berpuas hati dengan kelajuan pembangunan dan prestasi keseluruhan kami! ini

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Secara Eksklusif Mendedahkan Masa Lalu & Masa Kini Voltan Ultra Tinggi China (Separuh Pertama)

2024-05-20 Dalam keadaan "tiada piawaian, tiada pengalaman dan tiada peralatan" di dunia, UHV China telah berjaya berubah daripada "bermula dari awal" kepada "negara utama dengan peralatan penting", daripada "Dicipta di China" kepada "Terkemuka oleh China", daripada "Peralatan di China" kepada "Dunia Peralatan". Boleh dikatakan pembinaan UHV

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Secara Eksklusif Mendedahkan Masa Lalu & Masa Kini Voltan Ultra Tinggi (Separuh Kedua) China

2024-05-29 Menakluki "Gunung Everest" elektrik, UHV ialah "bermula dari awal" di China. Sejak 2004, State Grid Corporation of China telah menganjurkan berpuluh-puluh institusi penyelidikan saintifik dan universiti, lebih daripada 200 syarikat pembuatan peralatan, lebih daripada 500 unit pembinaan, dan ratusan ribu orang untuk mengambil bahagian dalam penyelidikan asas, teknologi UHV.

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