Sansion Power SXBP Series Resonance Test System Successfully Completes 110kV Cable Withstand Voltage Test

Recently, the SXBP Series High-Voltage Variable Frequency Series Resonance Test System developed and produced by Sansion Power demonstrated its exceptional performance in a major 110kV power transmission and transformation project. Utilizing its outstanding stability and high efficiency, the system successfully completed the AC withstand voltage test for a 110kV power cable, providing a solid technical guarantee for the timely commissioning of the project.

With the acceleration of urbanization, the demand for high-voltage and extra-high-voltage cables in urban power grids continues to grow. As the main arterial roads of urban grids, 110kV power cables require extremely high safety, accuracy, and equipment capacity during commissioning acceptance tests.

Traditional power-frequency withstand voltage test equipment is often bulky, heavy, and requires an extremely high power supply capacity on-site, making it difficult to execute large-capacity and long-distance cable tests under constrained field conditions. Safely and efficiently completing AC withstand voltage testing on long 110kV cables under limited site conditions is a major challenge for power construction teams.

To address these challenges, the SXBP Series High-Voltage Variable Frequency Series Resonance Test System was selected for this project. The system exhibits significant technical advantages, particularly for 110kV level and large cross-section power cables:

• Superior Field Adaptability & Portability

  Compared with traditional dry-type resonance systems, the SXBP oil-immersed device offers superior heat dissipation and an optimized weight-to-volume ratio, making it better suited for complex and variable job sites. Its modular design allows easy transport and setup, greatly reducing the workload for field operators and boosting testing efficiency.

• Powerful Testing Capacity & Scalability

  As highlighted by its technical capabilities:

  1.Full 110kV Coverage: Effortlessly performs AC withstand voltage tests on 110kV main transformer line ends and handles large 110kV/630mm² cables up to 22 km in length.

  2.Multi-Voltage Level Compatibility: Extends upward to test 220kV main transformer neutral points and 220kV/630mm² cables (up to 20.8 km), while extending downward to accommodate 35kV/240mm² large cross-section cables (up to 23 km).

  2.Multi-Asset Applications: Beyond power cables, it is designed for AC withstand voltage testing on 220kV and below circuit breakers, PTs, CTs, insulators, and GIS equipment.

At the test site, the technical team from Sansion Power collaborated with the construction engineers to conduct systematic AC withstand voltage testing on the 110kV cable. By applying variable frequency technology to find the exact resonant point, high test voltage and current were successfully generated with minimal power source input.

The system's integrated intelligent control panel continuously monitored the testing process, featuring automatic protection mechanisms to instantly safeguard personnel and equipment in the event of an anomaly. The test delivered precise, stable data, with all parameters outperforming design requirements, leading to full client acceptance.

The success of this 110kV cable withstand voltage test once again proves the capability of the SXBP Series Variable Frequency Series Resonance Test System as a premier tool for high-voltage electrical testing. Whether dealing with long-distance high-capacity cables, GIS, or main transformers, Sansion Power delivers accurate, efficient, and dependable resonance testing solutions.

We remain dedicated to supplying advanced technology and exceptional service to global power construction projects.