Fluke 1630-2, 1.5 kΩ CAT III, CAT IV 1000V

This earth tester is a clamp-style instrument for measuring earth/ground loop resistance and AC leakage current without disconnecting parallel grounds. It is intended for indoor and outdoor use where auxiliary stakes cannot be placed, enabling Rapid assessment of earthing components in paved areas, inside buildings or on power pylons. The instrument is battery-powered and pairs wirelessly with a mobile app to Record and store measurements and location data.

• Dual-clamp stakeless measurement eliminates auxiliary stakes and saves time
• ±1.5% accuracy on low-resistance ranges for precise loop readings
• True RMS leakage current measurement across a 40 Hz–1 kHz frequency range
• Stores a minimum of 32,760 logged readings for long-term data capture
• User-defined alarm thresholds enable Rapid pass/fail evaluation
• Band-pass filter reduces noise to improve leakage current clarity

• Suitable for commissioning and troubleshooting multi-grounded earthing systems
• Ideal for maintenance checks on substations and overhead pylons
• Used for on-site verification of equipment earthing in paved facilities
• Can be used for leakage current surveys on electrical distribution networks

It runs on four AA alkaline cells and delivers more than 15 hours of operation under typical ground resistance test conditions with the backlight and RF off.

The jaw accommodates conductors up to approximately 40mm diameter and meets IP30 ingress protection with the jaw closed.

The wireless link transmits measured values, GPS coordinates and images to a Cloud service for association with assets and work orders, reducing manual transcription.

It is rated to CAT IV 600V and CAT III 1000V for measurement applications and meets relevant IEC/EN standards.

The display is a 9999-count LCD with a refresh rate of 4/s and indicates overload conditions with an OL message.