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WR.10B Winding Resistance Tester

The WR.10B Winding Resistance Ohmmeter is an advanced tester designed for accurate measurement of transformer winding resistance and the DC resistance of high-power inductive devices. Controlled by a microcomputer, it automates self-check, data processing, and display functions. With its new power technology, the WR.10B is lightweight, highly accurate, and capable of delivering high output current.

Key Features

  • High accuracy with 1 µΩ resolution

  • Wide test current range up to 10A

  • Lightweight, portable design for field or lab use

  • Automated self-check and data processing

  • Built-in printer for immediate test reporting

  • Stores up to 200 test groups with PC connectivity

  • Suitable for transformer winding resistance and DC resistance testing

Technical Specifications

Resistance Precision

  • ±(0.2% RGD + 2d)

Test Range

  • 1.000Ω – 1000Ω (20mA)

  • 100.0mΩ – 100.0Ω (200mA)

  • 10.00mΩ – 10.00Ω (2A)

  • 4.000mΩ – 4.000Ω (5A)

  • 2.000mΩ – 2.000Ω (10A)

Output Voltage

  • 30 VDC

Low Scale

  • 1 µΩ

Output Current Precision

  • ±5%

Data Storage & Connectivity

  • Stores up to 200 test groups

  • Built-in thermal printer for onsite reports

  • Supports PC upload via USB

Weight

  • 10 kg

Power Supply

  • AC 220V ±10%, (50 ±1) Hz

  • Built-in Li-ion battery pack

Operating Conditions

  • Temperature: –10°C to 50°C

  • Humidity: <90% (non-condensing)

Standard Accessories

  • WR.10B Tester – 1

  • 220V Power Wire – 1

  • Test Wires – 1

  • Ground Wire – 1

  • Fuse (3A) – 5

  • PC Software CD – 1

  • Instruction Manual – 1

  • Survey Report – 1

  • Production Certification – 1

  • USB-Serial Wire – 1

  • Accessory Case – 1

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