High Precision Anti-interference Zinc Oxide Lightning Arrester Live Testing Instrument for Long-term Field Detection

Introduction

Different from the complex operation and single testing method of traditional lightning arrester detection equipment, the live testing instrument for zinc oxide lightning arrester adopts a distributed wireless acquisition design, with current and voltage sampling wirelessly transmitted to the host, completely eliminating the problem of complex on-site wiring. 

At the same time, the instrument integrates three testing methods: current method, voltage method, and no voltage method. It supports flexible switching between handheld, desktop, and Android tablet/phone multiple hosts. The entire measurement process is controlled by a human-machine interface, with simple operation and stable data. 

It balances the convenience of on-site testing with the accuracy of detection results and is suitable for various complex detection environments in the power field.

Technical Specifications

Product Functions

Comprehensive Parameter Measurement

• Leakage current: total current waveform, fundamental wave effective value, peak value;

• Resistive current component: waveform, 1/3/5/7/9 times effective value, peak value Irp, fundamental wave peak value Ir1p;

• Capacitive current: fundamental wave value;

• Voltage: voltage waveform, effective value;

• Other parameters: phase difference, active power, power consumption, etc.

Diverse Testing Modes

Intuitive Data Display & Analysis

The large color screen displays the test data and voltage/current/resistive current waveforms in real time, and the data display supports detailed/simplified mode switching. The built-in harmonic analysis and vector calculation functions can separate the resistive current from the total current, and realize the quantitative analysis of arrester insulation performance.

Convenient Data Management

• Data Saving: Automatically save test data with the test time as the file name, with power-off protection function;

• Data Export: Support U disk to export test data in Word format, easy for offline archiving and report editing;

• Data Sharing: Android APP supports sharing test data in text, picture and Word formats to mainstream social and office platforms;

• Data Printing: Equipped with a Bluetooth thermal printer (standard configuration), which can realize on-site printing of test data (desktop host supports direct printing).

Intelligent Auxiliary Functions

• Anti-interference Processing: With anti-interference calculation and angle compensation functions, solve the problem of three-phase mutual interference in high-voltage scenes;

• Battery Management: Real-time display of host and collector battery status, with low power prompt function;

• System Setting: Support screen background color/brightness adjustment, standby time setting, system time calibration, etc.;

• Test Note Input: Support Chinese/English input of site, equipment, personnel, notes and other information, which is convenient for marking and managing test data;

• MODBUS Communication: The handheld/desktop host supports MODBUS RS232 communication (optional RS485), which can be connected to the upper computer for centralized data management.

Safe and Humanized Design

• The wiring sequence is guided, and the instrument is required to be reliably grounded first before other wiring, avoiding electrical safety hazards;

• The current and voltage signal lines are anti-reverse connection design, which prevents the instrument from being burned due to wrong wiring;

• Built-in over-voltage and over-current protection, ensuring the safe operation of the instrument in complex on-site environments;

• The one-key switch and touch operation design make the operation simple and easy to get started, reducing the learning cost of testers.

Electric current method

Voltage method