Product Introduction

       NDYH-VI Zinc Oxide Arrester Tester is a specialized instrument used to detect the electrical performance of zinc oxide arresters. This instrument is suitable for live or de-energized testing of zinc oxide arresters at various voltage levels, enabling timely detection of hazardous defects such as internal insulation moisture and valve aging.

       The instrument is simple to operate and easy to use. The entire measurement process is controlled by a single-chip microcomputer. It can measure the total current, resistive current and its harmonics, power frequency reference voltage and its harmonics, active power, and phase difference of the zinc oxide arrester. A large screen displays the true waveforms of voltage and current.
       Using digital waveform analysis technology, the instrument employs software anti-interference methods such as harmonic analysis and digital filtering to ensure accurate and stable measurement results. It can accurately analyze the content of the fundamental and 3rd to 7th harmonics, overcome phase-to-phase interference, and correctly measure the resistive current of the side-phase arrester.
       The unit is equipped with a high-speed panel printer and rechargeable batteries, making it very convenient for field use. The instrument uses a unique high-speed magnetic isolation digital sensor to directly collect input voltage and current signals, ensuring data reliability and security.

Product Features

☆ Large-screen LCD display with full Chinese menu operation, making it easy to use.

☆ High-precision sampling and processing circuits, combined with advanced Fourier harmonic analysis technology, ensure more reliable data.

☆ The instrument uses a unique high-speed magnetic isolation digital sensor to directly collect input voltage and current signals, ensuring data reliability and security.

☆ This instrument can use electric field induction instead of PT secondary wiring.

☆ Supports non-synchronous voltage sampling mode.

☆ Capable of three-phase simultaneous measurement with automatic compensation, making it particularly convenient to use.

☆ Features such as output of fundamental peak resistive current and side-phase correction.

☆ Equipped with rechargeable batteries, a calendar clock, and a micro printer; can store 120 sets of measurement data.

Technical Parameters

☆ Total current measurement range: 0–10mA RMS, 50Hz/60Hz; Accuracy: ±(reading × 5% + 5μA)

☆ Fundamental resistive current measurement accuracy (secondary method, excluding inter-phase interference): ±(reading × 5% + 5μA)

☆ Current harmonic accuracy: ±(reading × 10% + 10μA)

☆ Reference voltage input range: 25V–250V RMS, total harmonic content <30%, 50Hz/60Hz

☆ Reference voltage measurement accuracy: ±(reading × 5% + 0.5V)

☆ Voltage harmonic measurement accuracy: ±(reading × 10%)

☆ Fundamental current-voltage phase angle Φ: 0°–360°

☆ Battery operating time: 6 hours for main unit; Charging power: 220V±10%, 50Hz/60Hz; Charging time: 5 hours

☆ Main unit dimensions: 325×280×140

☆ Main unit weight: 3.5Kg (excluding cables)

☆ Operating environment: Temperature: -10–50°C; Humidity: <90%