I. Technological Breakthrough: HMCOP Series Achieves Dual Upgrades in "Precision + Portability"
Leveraging 20 years of R&D expertise, Goldhome Hipot has completed a comprehensive technological upgrade of its core HMCOP series ultra-low-frequency high-voltage generators. New models tailored for diverse scenarios will be launched sequentially between July and August 2025, with key performance metrics reaching industry-leading standards.
1. Fully Electronic Design Overcomes Traditional Equipment Pain Points
The new HMCOP series completely abandons traditional mechanical modulation/demodulation technology, adopting modern digital frequency conversion and microcomputer control. This not only resolves issues like sine wave distortion and high-voltage spark discharge but also significantly reduces equipment size and weight. - For instance, the 50kV-rated HM-COP-50/1.1 features a booster weighing just 50kg and a controller at only 4kg. Combined with its modular design, two engineers can handle on-site transportation and deployment, eliminating the need for cranes that traditional equipment requires. Simultaneously, the equipment employs a high/low-voltage closed-loop negative feedback control circuit to eliminate the effects of capacitive rise. It maintains waveform distortion ≤5% across three adjustable frequencies: 0.1Hz, 0.05Hz, and 0.02Hz. Data is directly sourced from the high-voltage side, achieving measurement accuracy of ±(3% of full scale + 0.5kV), fully compliant with the DL/T 848.4-2004 industry standard requirements.
II. Intelligent Features Enable Efficient Testing
The new model features comprehensive upgrades in human-machine interaction and data processing capabilities: equipped with an 8-inch color LCD touchscreen, it supports touch-based voltage adjustment (with real-time switching between 1V, 2V, 5V, and 10V increments). The built-in computer can store 3,200 sets of test data and generate on-site Chinese test reports via a thermal printer. Pre-programmed with multiple standard procedures for diverse test subjects, the equipment supports insulation withstand voltage tests for various devices including 10kV-110kV cross-linked polyethylene cables and large high-voltage rotary motors. It excels particularly in long-distance cable testing-at 0.02Hz frequency, the effective test length for 10kV cables increases by 30% compared to traditional equipment. Safety protections include integrated mechanisms for power supply overcurrent, high-voltage overcurrent, and oil tank overheating. Both high- and low-voltage overcurrent protection activate within 20ms. The high-voltage output protection resistor is built into the booster unit, eliminating the need for additional wiring and further simplifying on-site operation.
III.Deep penetration of key domestic scenarios
In the field of rail transit, Goldhome Hipot comprehensive testing solutions centered on ultra-low frequency (VLF) testing technology have been deployed in key national railway power supply hub projects such as the Fuping Traction Substation in Shaanxi Province. These solutions support insulation testing for 330kV-level equipment, further expanding the application boundaries of the technology in high-voltage complex scenarios.
IV.Global Service and Technology Export Acceleration
In the international market, Guodian Huamei recently completed specialized training for technical representatives from Pakistan's power sector. The program featured in-depth exchanges on the operation and application of equipment such as ultra-low-frequency high-voltage testers, advancing the implementation of VLF technology and standards in the South Asian market. By September 2025, the company's ultra-low-frequency high-voltage testers have been deployed globally as part of the "100,000+ units serving global customers" initiative, across more than 100 countries and regions on six continents. In overseas projects like Southeast Asian hydropower stations and African photovoltaic bases, these instruments meet diverse testing demands under varying climatic conditions. Their wide temperature tolerance (-10°C to +40°C) and humidity resistance (≤85% RH) have established them as flagship products for the international expansion of domestic VLF equipment.
For detailed specifications or application examples of the Goldhome Hipot HMCOP Series Ultra-Low Frequency High-Voltage Tester, please visit its official website (www.gdhmdq.com).
