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HYR10D(S) Handheld Grounding Continuity Tester

The HYR10D(S) Handheld Grounding Continuity Tester is a portable high-current resistance tester designed to measure the continuity and connection resistance of grounding conductors, grounding grids, and bonding connections in power systems.

With selectable test currents from 1 A to 10 A and resolution down to 0.1 μΩ, it helps identify poor contacts, loose connections, corrosion, and other grounding faults. Its compact design, built-in rechargeable battery, LCD display, automatic testing, and 1,000-record data storage make it ideal for field testing in substations, power plants, and electrical facilities.
  • Detailed Description

Key Advantages

  • High-current testing: Selectable test current of AUTO, 1 A, 3 A, 5 A, or 10 A
  • Ultra-low resistance measurement: Resolution down to 0.1 μΩ
  • Multiple measurement ranges: Optimized for different test-current levels
  • High measurement accuracy: ±(0.5% + 2 digits)
  • Portable field design: Compact handheld instrument with a protective carrying case
  • Built-in rechargeable battery: Supports convenient on-site testing without external power
  • Large LCD display: Clear visualization of measurement results and operating status
  • Large data capacity: Stores up to 1,000 test records
  • Fast and simple operation: Automatic test control and straightforward user interface
  • Customizable test leads: Standard 4 m red lead and 1 m black lead; customized lengths available

Wide Measurement Capability

The instrument supports multiple test-current levels to accommodate different grounding and bonding applications:

Test Current Resistance Measurement Range
10 A 0.5 mΩ–0.8 Ω
5 A 2 mΩ–2 Ω
3 A 5 mΩ–3 Ω
1 A 10 mΩ–10 Ω
Resolution 0.1 μΩ
Accuracy ±(0.5% + 2 digits)

Designed for Field Applications

The handheld structure allows technicians to carry the instrument directly to the test location. The supplied carrying case provides convenient protection and transportation for the tester and its accessories.

The HYR10D(S) can be used for:

  • Grounding conductor continuity testing
  • Grounding grid connection resistance testing
  • Electrical bonding connection testing
  • Substation grounding system inspection
  • Power plant grounding system maintenance
  • Transmission and distribution equipment grounding inspection
  • Electrical cabinet and equipment grounding verification
  • Commissioning and preventive maintenance of electrical installations

Technical Specifications

Parameter Specification
Model HYR10D(S)
Test Current AUTO, 1 A, 3 A, 5 A, 10 A
Resistance Range 0.5 mΩ–0.8 Ω (10 A); 2 mΩ–2 Ω (5 A); 5 mΩ–3 Ω (3 A); 10 mΩ–10 Ω (1 A)
Resolution 0.1 μΩ
Accuracy ±(0.5% + 2 digits)
Display LCD
Data Storage Up to 1,000 records
Operating Temperature 0°C to 40°C
Relative Humidity <90% RH, non-condensing
Power Supply Built-in rechargeable battery
Maximum Power 100 W
Main Unit Dimensions 252 × 160 × 65 mm
Carrying Case Dimensions 290 × 235 × 360 mm
Main Unit Weight Approx. 2 kg
Carrying Case Weight Approx. 8 kg
Test Leads Standard: 4 m red lead + 1 m black lead; customizable

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Address:  Baoding, Hebei Province, China

Tel/WhatsApp: +86 13331227795
                          +86 18131253868

E-mail: sales18@hbhytech.com
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