Advanced DC Parameter Testing of Zinc Oxide Arresters with ZX-MOA Analyzer Introduction

Zinc Oxide Surge Arresters (MOA) are critical components in modern power systems, protecting equipment from transient overvoltages. Ensuring their operational integrity requires precise evaluation of key parameters, including DC reference voltage (U₁mA) and leakage current at 0.75U₁mA. The ZX-MOA DC Parameter Tester addresses these needs with an integrated, automated solution designed for field and factory applications.

Key Features

1.Fully Automated Measurement
The ZX-MOA employs closed-loop control and microprocessor technology to autonomously execute tests. Operators initiate measurements with a single button, and the system completes both U₁mA and 0.75U₁mA leakage current evaluations within 15 seconds. This rapid cycle enhances efficiency for batch testing scenarios.

2.Compact All-in-One Design
Integrating a DC high-voltage generator (0–30 kV), precision measurement circuits, and control logic into a portable chassis (≤15 kg), the instrument eliminates the need for external power supplies or auxiliary equipment. Its lightweight construction facilitates deployment in substations, power plants, and manufacturing facilities.

3.Engineered for Field Reliability

High-voltage components utilize military-grade insulation materials to ensure stability under harsh environments (humidity ≤85% at 25°C).

Simplified two-terminal Kelvin sensing minimizes wiring errors during on-site testing.

Transient suppression circuitry protects against electrostatic interference during high-voltage switching.

Application Scenarios

1.Preventive Maintenance
Detect early-stage degradation in MOA blocks caused by moisture ingress or valve sheet delamination by monitoring deviations in U₁mA (>5% drift indicates failure risk).

2.Production Quality Control
Validate consistency of U₁mA thresholds during arrester manufacturing, ensuring compliance with IEEE C62.11 standards.

3.Post-Fault Analysis
Perform diagnostic tests on arresters exposed to lightning strikes or switching surges to confirm post-event insulation recovery.

The ZX-MOA DC Parameter Tester redefines efficiency in surge arrester diagnostics through intelligent automation and rugged portability. By delivering laboratory-grade accuracy in field conditions, it serves as an indispensable tool for power utilities and OEMs committed to maintaining grid reliability. Technical teams can leverage its rapid testing capability to optimize maintenance schedules and mitigate unplanned outages caused by arrester 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/