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SA-10i Surge Arrester Tester

The SA-10i is a portable surge arrester analyzer designed for fast, accurate field testing of metal-oxide (MOA) surge arresters. It measures leakage current, resistive current, total current, third-harmonic content, and power loss to determine arrester health and insulation condition. Ideal for utilities and maintenance teams needing reliable on-site diagnostics.

Key Features

  • Performs online and offline surge arrester testing

  • Measures: resistive leakage current, total leakage current, third harmonic current

  • High-accuracy digital signal processing for stable readings

  • Automatic voltage compensation for harmonics

  • Built-in phase angle measurement

  • USB data export & internal memory for test records

  • Lightweight, field-portable design

  • Anti-interference filtering for substation environments

Technical Specifications

Parameter Specification
Test Voltage Applicable to 3–500 kV arresters
Resistive Current Accuracy ≤ ±(1% + 1 digit)
Total Leakage Current Accuracy ≤ ±(1% + 1 digit)
Harmonic Detection Up to 3rd harmonic
Measurement Range 0–10 mA
Phase Accuracy ≤ ±1°
Display 5″ LCD screen
Data Storage Internal memory + USB output
Power Supply AC 220 V ±10 % or internal battery
Operating Temp –10 °C to +50 °C
Weight ≈ 5 kg

Standard Accessories

  • Test leads & measurement clamps

  • USB data cable

  • Power supply cable

  • User manual

  • Carry case

  • Calibration certificate

Applications

  • Substation MOA surge arrester health assessment

  • Transmission & distribution network maintenance

  • Online leakage current trending

  • Detection of ageing / moisture ingress in arresters

Optional Add-Ons

  • Extended high-voltage insulated leads

  • Field printer for instant reports

  • Protective hard-case upgrade

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