Clamp-on Earth Resistance Tester | 0.05–1500Ω | AC current measurement | automatic shutdown

Technical Specifications

Measurement type: earth resistance (without electrodes), AC current
Earth resistance measurement range:
20.00 Ω
200.0 Ω
1500 Ω
AC current measurement (50/60Hz, Auto-ranging):
100.0 / 1000 mA
10.00 / 30.0 A
Measurement frequency: ~1 time per second
Power consumption: ~50 mA (max. 100 mA)
Auto power off: after ~10 min. of inactivity
Power supply: 4 × AA (LR6/R6) 1.5V batteries
Dimensions: 246 × 120 × 54 mm
Weight: ~780 g (with batteries)
Warranty: 12 months
Support: OBM

Functions

Earth resistance measurement without electrodes – fast and convenient testing
AC current measurement – additional analysis capability
Automatic range selection – easy to use
Clamp-type measurement – no need to disconnect the circuit
Auto power off – saves battery
Stable and accurate measurements – for professional use
Mobile and ergonomic design

Usage

For home users: checking the quality of home grounding, evaluating electrical safety before connecting devices, easy use without complex measurement methods
For engineers / energy specialists: analysis of grounding systems in industrial facilities, electrical network diagnostics and preventive maintenance, quick checks without shutting down the system
For electricians: grounding verification during installation, fault diagnostics and network analysis, work in environments where speed and accuracy are important
For maintenance specialists: regular safety inspections, equipment maintenance in factories, warehouses, server rooms, documentation and reporting

Advantages

Measurement without additional electrodes
Fast and easy operation
Automatic measurement ranges
Compact and mobile
Suitable for professionals and advanced users
Additional AC current measurement function

Disadvantages

Not suitable for all grounding types (e.g., isolated systems)
Requires a closed loop for measurement