Goldhome Technical Team Successfully Completes On-Site Testing of Insulation Cylinder Oil-Immersed Test Transformer
Recently, the technical team from Wuhan Goldhome Hipot Electrical Co., Ltd. (hereinafter referred to as "Goldhome") traveled to a customer's project site and successfully completed the on-site installation, commissioning, and testing of an insulation cylinder oil-immersed test transformer. The smooth delivery of this project marks another significant practical achievement for Goldhome in the field of high-voltage testing equipment applications and services.
An oil-immersed cylindrical-tube power-frequency withstand voltage test transformer is a device specifically designed for conducting withstand voltage tests on electrical equipment. It is engineered to generate voltages higher than normal operating voltages to verify the reliability of the test subject's insulation performance under overvoltage conditions. This type of equipment features an oil-immersed design, with the interior filled with insulating oil to enhance insulation levels and aid in heat dissipation. It also incorporates a cylindrical structure made of high-strength insulating material surrounding the coils, effectively increasing electrical isolation between the coils. The equipment is primarily used in industries such as power systems and electrical appliance manufacturing to conduct withstand voltage tests on high-voltage electrical equipment-such as cables and switchgear-during factory acceptance testing or routine maintenance. The AC Resonant Insulation Cylinder Oil-immersed Test Transformer recently launched by Goldhome integrates several of the company's core technologies.
In terms of performance, Goldhome's oil-immersed test transformer with an insulating cylinder replaces the traditional metal casing with an epoxy-glass-fiber-wound insulating cylinder. Combined with the company's proprietary nano-composite insulating coating, its insulation performance is 40% higher than that of traditional products, and partial discharge is strictly controlled below 3 picoCoulombs (pC), far exceeding the industry standard of 5 picoCoulombs. The unit features a dual-design approach of "oil-immersed insulation + multi-channel cooling" and uses eco-friendly blended insulating oil with a breakdown strength of ≥42 kV/2.5 mm, achieving a 35% improvement in cooling efficiency compared to traditional oil-immersed products. Equipped with an intelligent temperature control system, the device maintains a temperature rise of less than 40 K during 8 hours of continuous operation at rated load. In terms of portability, the device features a modular design, with each core component weighing no more than 30 kilograms. A single person can handle transportation and deployment, resulting in a 60% increase in deployment efficiency compared to traditional equipment and a 30% reduction in overall weight compared to similar products. The device has an IP65 protection rating, making it suitable for complex outdoor environments such as those with high humidity and salt fog corrosion. The equipment achieves Class 1.0 testing accuracy, enables real-time data collection, and fully complies with relevant industry standards such as GB/T 16927 and DL/T.
At the project site, the Goldhome technical team first conducted a comprehensive survey of the testing environment and held in-depth discussions with the client's technical lead regarding details such as equipment layout, power supply connection, safety precautions, and testing procedures. Subsequently, on-site testing officially began-the technical team strictly followed standardized procedures to sequentially complete on-site equipment wiring and system integration testing. During the power-frequency withstand voltage test, engineers selected typical high-voltage electrical equipment on-site as test specimens and completed the withstand voltage test in accordance with relevant standard requirements. Throughout the testing process, all performance indicators met design requirements, with core parameters-such as voltage output stability, partial discharge control accuracy, and protection response speed-demonstrating excellent performance; all test items passed on the first attempt.
After the testing concluded, Goldhome's technical engineers conducted comprehensive operational training for the client's technical staff. The training covered an explanation of the equipment's operating principles, demonstrations of operating procedures, key points for daily maintenance, and methods for troubleshooting common issues. The engineers placed special emphasis on pre-test safety checks-including confirming that the test subject had been completely disconnected from the power grid and other external power sources and that appropriate discharge procedures had been completed-as well as the importance of regularly inspecting the condition of the transformer oil and the overall operational status of the equipment during use. The client highly praised the Goldhome team's professionalism and efficient service, noting that the commissioning of this oil-immersed test transformer with an insulated cylinder will effectively enhance the company's ability to test the insulation performance of high-voltage electrical equipment and improve safety standards in production.
