Clamp type grounding resistance tester measurement range and usage data analysis

Clamp grounding resistance tester is a major breakthrough in traditional grounding resistance measurement technology, widely used in grounding resistance measurement of electric power, telecommunications, meteorology, oilfield, construction and industrial electrical equipment.
Clamp grounding resistance tester does not need to disconnect the grounding down conductor when measuring the grounding system with loop, no need for auxiliary electrode, safe and fast, easy to use.
The Clamp Ground Resistance Tester measures ground faults that cannot be measured by conventional methods and can be used in applications where traditional methods cannot be used because the instrument measures the combined value of the grounding resistance and the ground lead resistance. The instrument has long jaws and round jaws. The long jaws are especially suitable for flat steel grounding. In addition, the instrument can measure the leakage current and neutral current of the grounding system.
The basic principle of the clamp grounding resistance meter to measure the grounding resistance is to measure the loop resistance. The jaw portion of the clamp consists of a voltage coil and a current coil. The voltage coil provides an excitation signal and induces a potential E on the circuit under test. Under the action of the potential E, a current I will be generated in the circuit under test. The clamp meter measures E and I, and the measured resistance R is obtained by the following formula.

Clamp grounding resistance tester

1. Clamp-type grounding resistance tester does not require auxiliary electrode
2, safe and fast
3, easy to use

Power: 6VDC (4 sections of alkaline dry battery)
Working temperature: -10 ° C -55 ° C
Relative humidity: 10%-90%
LCD display: 4-digit LCD digital display, length and width 47 × 28.5mm
Jaw opening size: long jaw 28mm; round jaw 32mm
Clamp meter quality (with battery): long jaws 1320g; round jaws 1120g
Clamp meter size: long jaw length 293mm, width 90mm, thickness 66mm
Round jaw length 260mm, width 90mm, thickness 66mm
Explosion-proof mark for explosion-proof products: Exia II BT3
Protection level: double insulation structure features: jaw mode range shift: automatic external magnetic field: <40A/m
External electric field: <1V/m
Single measurement time: 1 second resistance measurement frequency: >1KHz
The highest resolution of resistance measurement: 0.001Ω
Resistance measurement range: 0.01-1000Ω
Current measurement range: 0.00-30.0A
Current frequency to be measured: 45-65Hz
Can store measurement data: 50 sets of resistance alarm threshold setting range: 1-199Ω
Current alarm threshold setting range: 1-499mA