Advanced Insulation Testing with BY2672 Digital Megger

Insulation resistance testing is a critical predictive maintenance task for electrical equipment, ensuring system safety and reliability. The BY2672 Digital Insulation Resistance Tester represents a significant step forward from traditional analog megohmmeters, offering enhanced capabilities for demanding field and industrial applications.

Key Advantages Over Traditional Testers

Unlike older, hand-cranked analog megohmmeters, the BY2672 is a solid-state, battery-powered instrument. This eliminates operator-dependent variability in voltage output, ensuring consistent and repeatable results. Its most notable advantage lies in its high output power and strong short-circuit current (≥ 3.0mA).

1.Superior Performance on Capacitive Loads: When testing long cables, bus bars, or large motors, the inherent capacitance can cause a significant voltage drop in lower-power testers, leading to inaccurate and artificially low insulation readings. The BY2672's high short-circuit current allows it to charge these capacitive loads rapidly and maintain the rated test voltage (2500V or 5000V) effectively. This provides a true and reliable measurement of the insulation resistance under stable voltage conditions.

2.Enhanced Anti-Interference Capability: Electrical substations and industrial plants are filled with electromagnetic noise. The BY2672 is specifically engineered for these environments. Its equipotential protection ring and fourth-order active low-pass filter actively shield the measurement from external power frequency and strong electromagnetic fields. This results in a stable reading, free from the flickering and instability often seen with less robust testers.

Technical Capabilities in Detail

The BY2672 offers two standard test voltages for high-voltage apparatus: 2500V and 5000V. Its measuring range is exceptionally wide, from 20 MΩ to 199,999 MΩ, automatically ranging to simplify operation. The relative error is maintained within <±10%±1 digit, ensuring good accuracy for condition assessment.

A key feature for technicians is its handling of low-resistance measurements. Using a scaling method, the instrument minimizes the impact of voltage drop, providing more accurate results even when measuring lower-quality insulation.

Operational Efficiency

The BY2672 is designed for user convenience. The large LCD display clearly shows the resistance value, and the automatic range conversion means technicians do not waste time manually switching scales. It can be powered by standard AA batteries or via AC power, making it versatile for both remote and workshop use.

Comparison Table: BY2672 vs. Traditional Analog Megger

Conclusion：

For technicians working on medium and high-voltage equipment like transformers, switchgear, and long-run power cables, the BY2672 Digital Insulation Resistance Tester provides a robust, accurate, and user-friendly solution. Its high output power, superior noise immunity, and stable performance under capacitive load conditions make it a far more reliable tool than legacy analog testers for diagnosing insulation health and preventing unexpected failures.

GDZX is a manufacturer of power testing equipment, offering a wide range of product categories with comprehensive models and providing professional technical support. Contact: +86-17396104357.Website: https://www.highvoltage-testequipment.com/