Product Detail

ES3090 Loop Resistance Tester

  • Ultra-high current testing (up to 220A) for precision micro-ohm measurements (0.10μΩ–5.00mΩ).
  • Multi-range current output: 87 fine-adjustment steps (2.5A/step) + 8 coarse-adjustment gears (5A–220A).
  • Industrial-grade 5.6-inch color LCD with 999-data storage and adjustable backlight.
  • Four-wire method ensures accurate results for high-voltage switch contactswelded joints, and metal loop resistances.
  • Built-in 11.1V 4000mAh lithium battery with overheat/open-circuit protection
  • Complies with IEC61010-1 (CAT III 600V)JJG166-1993, and DL/T967-2005 standards

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The ES3090 is engineered for critical resistance testing in power systems and industrial applications. Its 220A max current (fast mode) and ±0.15% accuracy make it ideal for high-voltage circuit breakers, welded components, and conductor loops. Features include auto-shutdowntemperature monitoring, and simple tap-style test leads (3m length, <10mΩ resistance).
Specifications:
  • Measurement Ranges:
Current Gear Resistance Range
5A 100μΩ–3500mΩ
220A 0.10μΩ–500μΩ
  • Resolution0.01μΩ (minimum).
  • Test Time: Adjustable (10s–60s for ≤100A; fast mode for >100A).
  • Power11.1V 4000mAh battery (200mA standby, 14.8V charger included).
  • Environmental:
    • Operating: -10°C to 40°C, <70% humidity.
    • Storage: -20°C to 60°C, <70% humidity.
  • Dimensions/Weight:
    • Meter: 229mm×166mm×74mm / 2kg.
    • Test Leads: 3m red/black cables (tapped ends).
  • SafetyCAT III 600VAC 3700V withstand voltage.
About Manufacturer:
Fuzrr Technology (Guangzhou Zhengneng Electronic Technology Co., Ltd). is a professional manufacturer engaged in R&D, production and sales. The factory is located in Guangzhou, the metropolis of China’s International Greater Bay Area Economic Circle, near Hong Kong, Macau, and Shenzhen in the south. Mainly manufacture Utility locator, Cable identification, multimeters, insulation resistance testers, grounding resistance testers, power quality monitors, megohmmeters, Battery internal resistance testers, clamp power meters, high voltage Current clamp meters and more! We have a professional engineer technical team, efficient sales team and competitive price advantage, exporting to more than 80 countries and regions. After more than 15 years of development, we have gained rich experience in manufacturing and exporting, and have cooperated with global brand agents. The workshop is equipped with automatic production lines, with more than 100 skillful workers, automatic plug-in machinery and multifunctional testing equipment. Our R&D department provides strong technical support and accepts OEM, ODM for large order projects.

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