Application

The clamp-on measurement method is new and unique. It offers the ability to measure the earth’s resistance without disconnecting the ground. This type of measurement also offers the advantage of including the bonding to the ground and the overall grounding connection resistances along with indispensable troubleshooting tools to help you maintain uptime. It is recommended that all grounds and ground connections be checked periodically as a part of a normal predictive maintenance plan. If an increase in resistance of more than the acceptable limits is found during these periodic checks, then the engineer should investigate the source of the problem and make the correction to lower the resistance by replacing or adding ground rods to the ground system.

Typically used for 

• Measuring earth resistance of the electrical ground rod and grid. 
• Utility poles/Service entrance or meter
• Street lighting
• Lightning protection
• Street cabinets
• Telephone pedestals and telecommunication tower’s grounding
• Cell towers (applications with buried ground ring)
• Pad mounted transformer
• Pole mounted transformer
• Measures AC leakage current of transformer neutral
• Conduct field surveys quickly and effectively to retrieve and analyze the readings for later reference

Features

• LCD of up to 4 digits
• Range: 0.01Ω to 1200 Ω
• Resistance measurement resolution 0.001 Ω
• Memory storage capability of up to 99 records
• Long jaw size: 65mm — 32mm φ
• The unique long jaw is particularly suitable where grounding is done by flat steel or copper strips
• Alarm setting feature with selection range available from 1 Ω to 199 Ω
• Double insulation level protected from the external magnetic field as well as electric field
• Automatic range selection, automatic self-calibration
• Single measuring time: 0.5 seconds