UNI-T UT625B | 200A Low Resistance Ohmmeter

The UNI-T UT625B Low Resistance Ohmmeter is the higher-current model for contact and loop resistance measurement in high-voltage switches, transformers, busbars, cable joints, grounding devices, rail transit, new energy and power-system maintenance. UNI-T lists UT625B with 0.1µΩ to 2000mΩ range, 5A to 200A DC test current, four-wire Kelvin measurement, built-in thermal printer, USB/PC software analysis, comparison testing, adjustable test duration and 200 stored records.

Pro Tip

Use the UT625B for high-current connection points, where a 200A test current yields a more representative contact-resistance check than lower-current meters. Buy UNI-T UT625B from Kamadi Pakistan for 200A loop and contact resistance testing.

Buyer’s Selection Guide

Choose the UT625B if you need 200A maximum test current and 2000mΩ range. It is better than UT625A for heavier switchgear, busbar and high-current connection testing.

Key Features

• 200A low resistance ohmmeter
  
• 0.1µΩ to 2000mΩ resistance range
  
• 5A to 200A DC test current
  
• Four-wire Kelvin measurement
  
• Built-in thermal printer
  
• USB data transfer
  
• PC software analysis
  
• PASS/FAIL comparison display
  
• 10s to 60s adjustable test time
  
• 200 test record storage
  

Technical Specifications

• Model: UT625B
  
• Product Type: 200A Low Resistance Ohmmeter
  
• Resistance Range: 0.1µΩ to 2000mΩ
  
• Test Current: 5A to 200A DC
  
• Stepping Current: 5A or 10A
  
• Best Resolution: 0.1µΩ
  
• 200A Range: 0.1µΩ–1999.9µΩ
  
• 100A Range: 2.000mΩ–9.999mΩ
  
• 50A Range: 10.00mΩ–99.99mΩ
  
• 5A Range: 100.0mΩ–2000mΩ
  
• Accuracy: ±(0.4%rdg+0.04%FS) for lower ranges reference
  
• Test Method: Four-wire Kelvin test
  
• Test Time: 10s / 20s / 30s / 60s; 1s stepping
  
• Maximum Continuous Single Test: 60s
  
• Data Storage: 200 sets
  
• Printer: Built-in thermal printer
  
• Display: 7-inch color LCD
  
• Open Circuit Voltage: 10V DC
  
• Output Power: ≤250W
  

Applications

• High-voltage switch contact testing
  
• Busbar and high-current joint inspection
  
• Transformer connection testing
  
• Rail transit and power-system maintenance
  
• New energy combiner box and inverter checks