Key technical advantages of the HM3320
This tester stands out for its accuracy, efficiency, and adaptability to real DC system environments:
High-precision fault detection: supports DC system voltages from 24 V to 300 V (covering most industrial DC standards) and is capable of detecting ground fault resistances as low as 1 kΩ, operating accurately even in conditions of high background noise or floating ground.
Fast fault location: integrates the dual functions of "fault resistance measurement" and "fault point location." After fault detection, dedicated clamp sensors track down faulty circuits, reducing troubleshooting time from hours to minutes.
Non-destructive testing: uses low-current signal injection (≤5 mA), avoiding disruption to normal DC system operation. Testing requires no power interruption, ensuring continuous supply to critical loads such as substation control circuits.
Anti-interference performance: Manufactured with electromagnetic shielding and adaptive filtering technology, it maintains stable measurements even in environments with high interference (e.g., near high-voltage equipment in substations or industrial motors).
User-friendly operation: Features a 3.5-inch LCD screen with clear error data indications (resistance value, voltage, signal strength) and single-button operation. It also stores up to 500 test records for later review or reporting.
Backed by Goldhome Hipot's experience in DC testing
The development of the HM3320 by Goldhome Hipot is based on the company's many years of experience in electrical system testing, especially in solving on-site problems for customers of State Grid and China Southern Power Grid. The company's R&D team optimized the tester based on real-world feedback from substation maintenance engineers, ensuring that it works seamlessly with common DC system configurations (e.g., single/dual bus or battery backup systems).
"The HM3320 fills a gap in effective DC ground fault testing," said a product manager at Goldhome Hipot. "For power companies or data centers, where DC system downtime is costly, this tester allows teams to repair faults faster, minimizing operational risks. It is a tool created to meet the 'on-site' needs of our customers."
The HM3320 has already attracted interest from important sectors: electrical network maintenance teams, data center facility managers, and industrial automation providers. Goldhome Hipot offers pre-delivery calibration (traceable to national standards) and on-site training for customers, along with a 1-year warranty and lifetime technical support, in accordance with the company's ISO 9001-certified quality management system.
As DC power systems become an increasingly integral part of smart grids and digital infrastructure, the HM3320 reinforces Goldhome Hipot's commitment to developing specific and practical test solutions. The controller is now available for orders worldwide, and Goldhome Hipot's international distribution network ensures timely delivery to customers in Asia, Europe, and Africa.
The latest training delivered by Goldhome Hipot provided participants with practical knowledge that improves their ability to maintain the safety of electrical systems. Initiatives such as this reflect the company's commitment to supporting its customers beyond the supply of equipment.
The increasing emphasis on electrical safety standards around the world has increased the demand for reliable solutions for testing ground faults in direct current systems. Companies interested in maintaining the safety of their operations benefit from working with experienced manufacturers who understand the complexity of electrical testing requirements.
