Fluke 1625-2 | Advanced GEO Earth Ground Tester with AFC & R Measurement*

Ground measurements near substations, industrial equipment, or electrically noisy environments can be affected by interference, making stable results harder to obtain. The Fluke 1625-2 GEO Earth Ground Tester adds advanced measurement control to Fluke's multi-method ground-test platform.

It supports fall-of-potential, soil resistivity, selective and stakeless testing, while Automatic Frequency Control (AFC) identifies interference and selects an appropriate test frequency. R* mode calculates earth-ground impedance at 55 Hz to provide a result more representative of fault-current conditions. Programmable limits speed repetitive testing, and the tester also provides additional AC/DC resistance and continuity functions. Its resistance measurement range extends to 300 kΩ with a stated operating error of ±5%.

Advanced Ground Tester Selection Guide

Choose the 1625-2 where electrical interference, advanced fault-condition analysis or programmable limits justify AFC and R* functionality. The 1623-2 suits standard multi-method ground testing.

Market Relevance

The Fluke 1625-2 is particularly relevant to Pakistan's utilities, substations, generation plants, industrial facilities, solar farms and critical grounding systems. Kamadi Pakistan offers the Fluke 1625-2 for advanced earth-ground verification and troubleshooting.

Key Features

• Four earth-ground test methods
  
• Automatic Frequency Control
  
• R* earth impedance at 55 Hz
  
• Adjustable test limits
  
• USB data storage and transfer
  

Technical Specifications

• Model: Fluke 1625-2
  
• Resistance Range: 0–300 kΩ
  
• Operating Error: ±5%
  
• Test Voltage: 20 / 48 V
  
• Short-Circuit Current: 250 mA
  
• AFC Frequency: 94–128 Hz
  
• R Frequency:* 55 Hz
  
• Ingress Protection: IP56
  
• Safety Rating: CAT II 300 V
  
• Battery: 6 × AA alkaline
  

Applications

• Substation grounding
  
• Power-plant earth systems
  
• Soil resistivity measurement
  
• Lightning protection testing
  
• Industrial grounding audits
  

Professional Tip: Use AFC when readings fluctuate near electrically noisy installations; interference can otherwise make a sound grounding system appear unstable.