ZGF DC Micro-amperemeter: Technical Overview for HV Applications

The ZGF DC Micro-amperemeter is a specialized instrument designed for precise and reliable measurement of small direct currents, particularly in demanding high-voltage (HV) testing environments. Its design prioritizes safety, durability, and accuracy, making it an essential tool for technicians and engineers working on insulation diagnostics, dielectric testing, and related high-voltage circuitry.

Core Design Philosophy: Safety and Shielding

A standout feature of the ZGF is its arc-shaped, full HV shielded construction. This design is critical in high-voltage environments to prevent surface leakage currents and the influence of external electrostatic fields from corrupting the low-level microampere measurements. The shielding ensures that the current reading accurately represents only the current flowing through the intended conductor, significantly enhancing measurement integrity.

Robust Protection and Reliability

The instrument incorporates an over-current and over-voltage protection function. This built-in safeguard is vital for preventing damage from unexpected surges or faults during HV tests, such as insulation breakdowns. Coupled with its strong anti-impulse current capability, the ZGF is engineered to withstand transient spikes, ensuring long-term operational stability and high reliability in unpredictable test conditions. Its operation is noted for being simple, allowing technicians to integrate it into test setups with minimal configuration.

Detailed Technical Specifications

The performance of the ZGF is defined by the following key technical indicators:

1.Measuring Range: 0 – 1999 µA. This range is optimal for measuring leakage currents in insulation and other low-current HV phenomena.

2.Resolution: 1 µA. Provides fine granularity for detecting minute changes in current.

3.Accuracy: ±0.5% of reading ±1 digit. This level of accuracy ensures trustworthy data for diagnostic and compliance testing.

4.Operational Environment: Rated for use in temperatures from 0 to 40°C and at relative humidity up to 85%, making it suitable for most laboratory and controlled field conditions.

Conclusion

The ZGF DC Micro-amperemeter combines essential safety features like full HV shielding and circuit protection with precise measurement capabilities. Its robust design, focused on mitigating the challenges of high-voltage environments, offers technicians a dependable tool for critical current measurements. The specified accuracy, wide range, and strong impulse resistance make it a practical choice for applications ranging from routine maintenance diagnostics to rigorous high-voltage compliance testing.

GDZX is a manufacturer of power detection equipment, offering a diverse range of products with comprehensive models and providing professional technical support. Contact us at +86-27-6552607 or +86-17396104357.Website: http://en.gdzxdl.com/