Ⅰ General Information

GDYZ-301 Metal Oxide Arrester Tester is a preventive on-line/on-site test tool to check the health of Metal Oxide 

Arresters of different voltage levels. It can detect dangerous problems inside the arresters such as insulation

moisture and valve plate aging.

Ⅱ Features

• 800 × 480 LCD touch screen,high speed thermal printer;
• Long distance wireless transmission. PT signal wireless transmission distance more than 400 m, up to 2000 m;
• Suitable for testing in various situation such as lightning arrester with or without electricity,laboratory;
• Test three phase current,three pahse voltage at the same time,more efficient;
• No strong electricity inside,voltage no more than 12V.Current and voltage sensors are completely isolated,safe and reliable;
• Support various voltage sampling:1. Wired 2 wireless 3. no voltage
•     A. wire: digital signals transmission with cable which the signal is from PT metering winding; 
•     B. wireless: digital signals wireless transmission which the signal is from PT metering winding;
•     C. No voltage: No need to get signal from PT terminals.Use software calculation to get voltage standard. 
• Built-in high energy Li-battery.With 6000mAh high energy Li-battery,suitable for no power supply field;
• Equipped with industrial grade operating system, support direct shutdown mode; With a USB interface,can connect with a USB mouse, keyboard, easy to operate;
• With a 4GB SD card,can store massive testing datas;
• Advanced data processing.Supporting upper management software, with functions of historical data management, data analysis,report automatic generation and printing;
• High speed sampling frequency, advanced digital signal processing technology, strong anti-interference performance, high precision measurement results;
• With dust-proof, waterproof, anti-corrosion plastic sealed box, small size, light weight, easy to carry.

Ⅲ Technical Parameters

• Power Supply: 220V, 50Hz or internal battery;
• Measuring range:   
•     Leakage Current (RMS) 0-10mA (scalable);
•     Voltage (RMS) 30-100V (scalable).
• Measuring accuracy:
•     Current: total current> 100μA, ± 2% of reading ± 1 digit;
•     Voltage: Voltage signal> 30V, ± 2% of reading ± 1 digit.
•     Wireless Accuracy: 5%
• Measurement parameters:
•     Leakage current total current waveform, fundamental wave RMS, peak value.
•     Resistive component fundamental wave RMS of leakage current, 3,5,7 times RMS.
•     Resistive component peak value of leakage current, Including positive peak value Ir+, negative peak value Ir-.
•     Capacitive current fundamental wave, full voltage, full current phase angle difference.
•     Voltage RMS.
•     Lightning arrester power.
• Voltage datum signal sampling method:
•     Sync with cable: 40 meters (can be extended)
•     Wireless sync:> 400 meters (can be extended);
• Battery parameter:
•     Charging time> 6 hours
•     Continuous working time> 4 hours
•     Continuous working hours> 8 hours;
•     Dimension: 34cm × 22cm × 20cm;
•     Weight: 5kg (without cable box);