Wuhan Goldhome Hipot Electrical Co., Ltd. continues to support the electric power sector with advanced testing equipment. The company recently unveiled a fully automatic SF6 density relay calibrator designed to improve the efficiency of substation maintenance work.
Technological innovation: Class 0.20 accuracy with dynamic temperature compensation
The GRD-8000 calibrator has achieved a quantum leap in performance thanks to three fundamental technological innovations. According to Dr. Li, head of Goldhome Hipot's research and development center, the device uses a dual-core processor system consisting of a 32-bit ARM microcontroller and a TI high-speed signal processor, which ensures synchronized collection and processing of pressure and temperature data with a response time of less than 50 ms.
An important innovation is the advanced dynamic temperature-pressure compensation technology. Unlike conventional equipment, which requires manual conversion of data to a standard value of 20 °C, the GRD-8000 automatically converts real-time pressure data measured between -20 °C and 60 °C to standard values at 20 °C, with a pressure measurement accuracy of 0.20 class and a temperature resolution of 0.1 °C. Dr. Li explained, "This eliminates the need for temperature-controlled rooms and enables accurate calibration even in harsh conditions such as cold plateaus or high-temperature workshops."
Revolution on site: portable design reduces calibration time by 60%
The GRD-8000 has undergone comprehensive development in terms of ease of use, focusing on the practical requirements of on-site maintenance. Weighing only 5 kg and measuring 380×260×130 mm, the device's integrated portable design allows for easy transport by a single operator. It is equipped with 12 types of universal transition connectors, which allow non-destructive calibration of density relays on more than 90% of the main SF6 switch models without disassembly, significantly reducing equipment downtime.
The intelligent operating system further lowers the threshold for use. The 7-inch anti-glare color touch screen clearly displays real-time parameters such as ambient temperature, measured pressure, and standard pressure at 20℃. With a simple push of a button, the device automatically performs four basic tests, including alarm value, closing value, and their recovery values, and generates test results in the form of a Chinese report in 3 minutes-60% faster than traditional manual calibration.
Industry recognition: Bulk orders from major power distribution companies
The technological advantages of the GRD-8000 quickly gained recognition in the market. Prior to its official launch, it was tested for three months at 500 kV substations belonging to State Grid Jiangsu Electric Power Co., Ltd. Test results showed that the device's test data consistency reached 99.8% and the average calibration time per device dropped from 40 minutes to 12 minutes.
Wuhan Goldhome Hipot Electrical Co., Ltd. specializes in the production of electrical testing equipment, including cable testers, relay test sets, and other diagnostic devices. The company's products are used by utilities and industrial clients to ensure the safety and reliability of electrical installations. For more details on their offerings, please contact Wuhan Goldhome Hipot.
