H2550 Pointer Type Insulation Resistance Tester: Three Core Advantages Ensure Reliable Testing
In the field of electrical equipment insulation performance testing, analog insulation resistance testers play an irreplaceable role in preventive testing of power systems and equipment troubleshooting, thanks to their three core advantages: real-time feedback, interference resistance, and portability and durability.
Three Core Advantages
1. Real-time Trend Monitoring for Precise Capture of Dynamic Insulation Changes
Analog insulation resistance testers utilize an ultra-thin mechanical dial with a hairspring, where the continuous movement of the pointer intuitively reflects the dynamic trends in insulation resistance. The direction and speed of the pointer's movement help experienced operators instantly assess the stability of insulation performance and identify abnormalities such as moisture ingress, surface contamination, or localized breakdown. The use of a mechanical pointer allows for easy observation of the range of insulation resistance changes-a feature that digital instruments struggle to replicate. Although digital megohmmeters provide precise numerical values, they may fail to visually demonstrate the decay process of insulation resistance in environments with strong interference.
II. Strong Anti-Interference Capability, Adaptable to Complex Field Environments
In environments with strong electromagnetic interference, such as high-voltage substations and power plants, digital instruments may experience value fluctuations or display anomalies due to high-frequency interference. Analog insulation resistance testers are equipped with an equipotential protection ring and a low-pass filter circuit, which effectively shield against external power-frequency and high-frequency electromagnetic interference. They can still deliver stable and accurate test results in harsh electromagnetic environments, such as substations rated at 110 kV or higher and near high-voltage motors. The housing features a robust construction combining high-strength aluminum alloy and ABS plastic, offering excellent sealing and water resistance, making it suitable for various complex field operations.
III. Portability, Durability, and Low Power Consumption: Enhancing On-Site Work Efficiency
The analog insulation resistance tester is battery-powered, offering advantages such as compact size, light weight (typically 2 kg), and portability. Featuring a low-power design, its maximum current consumption is only 80 mA; eight AA batteries can support continuous operation for 7 hours under maximum load. The C-type meter supports both AC and DC operation, featuring a built-in rechargeable battery and an intelligent charging module, with a short-circuit current exceeding 2mA. The use of an internal automatic range-switching circuit significantly increases the instrument's upper measurement limit; the high-voltage range can measure up to 200GΩ, meeting the insulation testing requirements for various electrical equipment such as transformers, motors, and cables.
Goldhome's Technical Expertise
Goldhome Hipot, established in 2008 and located in the Wuhan Economic and Technological Development Zone, is a national-level high-tech enterprise integrating R&D, production, and sales. The company has been honored with the titles of Wuhan "Science and Technology Little Giant" Enterprise and "Gazelle Enterprise." It strictly adheres to national standards such as DL/T 845.1-2004 and DL/T 474.1-2018, and other national standards.
In the field of pointer-type insulation resistance testers, Goldhome's HM2550 model features an ultra-thin dial gauge design with dual voltage output settings of 2500V and 5000V. It can measure up to 100 GΩ at 2500V and up to 200 GΩ at 5000V. The unit features a portable design with an ABS plastic housing, weighs only 2 kg, and is powered by 8 AA batteries. It is easy to operate and includes high-voltage warning tones and a timer alarm function. The meter features an automatic high/low range dual-scale display with color-coded markings for easy reading. This product is an ideal testing instrument for measuring the insulation resistance of transformers, current transformers, generators, high-voltage motors, power capacitors, power cables, surge arresters, and more. It is widely applicable in power plants, substations, industrial and mining enterprises, and third-party testing institutions.
