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SA-30i Plus Surge Arrester Analyzer (Advanced Model)

The SA-30i Plus is the advanced, high-accuracy version of the SA-Series surge arrester analyzers. Designed for extra precision, improved harmonic compensation, and deeper analysis functions, it is ideal for HV/MV substations, transmission networks, and utilities requiring detailed arrester diagnostics.
It measures resistive current, total leakage current, 3rd harmonic content, voltage phase angle, power loss, and delivers highly stable results even in noisy environments.

Key Features

  • Advanced model with enhanced accuracy & stability

  • Full online surge arrester testing—no need to disconnect the arrester

  • Measures:

    • Resistive leakage current

    • Total leakage current

    • Third harmonic current

    • Phase angle & power loss

  • Superior DSP filtering for high-interference substations

  • Automated voltage compensation and harmonic separation

  • Internal memory with USB data export

  • Large backlit LCD for field readability

  • Rugged casing suitable for outdoor use

Technical Specifications

Parameter Specification
Applicable Arrester Voltage 3–500 kV
Resistive Leakage Current Range: 0–10 mA • Accuracy: ≤ ±0.5%
Total Leakage Current Range: 0–10 mA • Accuracy: ≤ ±1%
Harmonic Analysis 1st–3rd harmonics with enhanced filtering
Phase Angle Accuracy ≤ ±0.5°
Display High-contrast LCD
Storage Internal memory + USB output
Power Supply 220 V AC or built-in Li-ion battery
Operating Temperature –10 °C to +55 °C
Weight ≈ 6 kg

Standard Accessories

  • Current clamp sensor

  • Voltage / reference leads

  • USB cable

  • Power adaptor

  • Soft carrying case

  • User manual + calibration certificate

Applications

  • High-precision assessment of MOA surge arresters in substations

  • Trending and predictive maintenance for HV/MV networks

  • Detection of contamination, surface current, and internal ageing

  • Commissioning tests and periodic inspections

Optional Accessories

  • Hard-shell ruggedised case

  • Extended insulated lead set

  • Field thermal printer

  • Advanced analysis software (PC-based)

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