Double Clamp Earth Resistance Tester, 0 To 300kΩ

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Model: RDDLZ-ERT-300k
Weight: 1.00
SKU: RDDLZ-ERT-300k

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Low price earth resistance tester is specially designed for measuring ground resistance, DC resistance, soil resistivity, ground current, and ground voltage, equipped with a 0~300kΩ range, large LCD display, a large-capacity rechargeable lithium battery pack, and a USB interface for data upload. Waterproof double clamp-on ground resistance tester is suitable for use in outdoor construction sites.

Features

Clamp ground resistance tester is available with a 0~300kΩ measure range and a waterproof case.
It adopts import FFT (Fast Fourier Transform Algorithm) and AFC (Automatic Frequency Control) technology. With unique antijamming capability and environmental adaptability, high consistency of retest.
Package with waterproof protection box, waterproof, crash-proof, anti-drop and durable, large-capacity rechargeable lithium battery pack, such tester especially suitable for application at the outdoor construction site.
Digital clamp on earth resistance tester is equipped with a large LCD display, alarm function, overload protection function, and automatic shutdown function, also with data storage, data access and data upload by USB interface function.

Specifications

Model	RDDLZ-ERT-3200C
Power Supply	DC7.4V 2600mAh rechargeable lithium battery
2/3/4-wire Method Measure Earth Resistance	Range: 0.00Ω~300KΩ; Resolution: 0.01Ω; Accuracy: ±2%rdg±3dgt
Selection Method Measure Earth Resistance	Range: 0.00Ω~3000Ω; Resolution: 0.01Ω; Accuracy: ±2%rdg±3dgt
Double Clamp Method Measure Earth Resistance	Range: 0.00Ω~100Ω; Resolution: 0.01Ω; Accuracy: ±10%rdg±5dgt
Earth Voltage Measurement	Range: 0.0~100V AC; Resolution: 0.1V; Accuracy: ±2%rdg±3dgt
Earth current Measurement	Range: 0.00mA~600.0A Resolution: 0.00mA; Accuracy: ±2%rdg±3dgt
Soil Resistivity Measurement(ρ)	Range: 0.00Ωm~9000KΩm; Resolution: 0.01Ωm
CT Size	φ70mm
Short-circuit Test Current	AC 250mA max
Open-circuit Test Current	AC 40V max
Test Frequency	128Hz/111Hz/105Hz/94Hz (AFC)
Data Storage	2000 groups
Automatic Shutdown	15 minutes after power on, will automatically shut down without any operation
LCD Dimension	LCD Frame Dimension: 128mm×75mm； LCD Display Dimension: 124mm×67mm
Tester Dimension	80mm(L)×260mm(W)×160mm(H)
Total Weight	6700g (include package)
Working Current	Standby: around 25mA (Backlight close); Measurement: 100mA (Backlight close)
Test Wires	Red 40m, yellow 30m, green 20m, black 10m, red 1.6m, black 1.6m (total 6 pcs wires)
Auxiliary Ground Rod	4PCS: φ10mm×150mm
USB Interface	With a USB interface, software monitoring, storage data can be uploaded to computer, saved and printed
Bluetooth Communication	Support the Bluetooth communication function of the Android system, after installation the APP, mobile terminals can be used to test operations and view test records
Alarm Function	Measure value exceeds alarm setting value, will "Toot-toot-toot" alarm indication
Battery Voltage	While the battery voltage decreases to around DC 7.2V±0.1V, will display low battery voltage symbol, and remind to replace the battery
Accessories	Tester: 1PC; Current Clamp Sensor: 2PCS; Ground Rod: 4PCS; Testing wires: 6PCS; USB communication cable: 1PCS; Special recahrager: 1PCS; Tester bag: 1PCS

Range and Accuracy

Measurement Function	Measurement Range	Accuracy	Resolution
2/3/4-wire method to measure grounding resistance (R~), DC resistance (R—)	0.000Ω~9.999Ω	±2%rdg±0.05Ω	0.001Ω
	10.00Ω~29.99Ω	±2%rdg±5dgt	0.01Ω
	30.0Ω~299.9Ω	±2%rdg±3dgt	0.1Ω
	300Ω~2999Ω	±2%rdg±3dgt	1Ω
	3.00kΩ~300.00kΩ	±4%rdg±3dgt	10Ω
Selective method to measure grounding resistance (R~)	0.000Ω~9.999Ω	±2%rdg±0.05Ω	0.001Ω
	10.00Ω~29.99Ω	±2%rdg±5dgt	0.01Ω
	30.0Ω~299.9Ω	±2%rdg±3dgt	0.1Ω
	300Ω~3000Ω	±2%rdg±3dgt	1Ω
Double clamp method to measure grounding resistance (R~)	0.01Ω~0.99Ω	±10%rdg±5dgt	0.01Ω
	1.0Ω~29.9Ω		0.1Ω
	30Ω~100Ω		1Ω
Soil resistivity (ρ)	0.00Ωm~99.99Ωm	Accuracy: According to the precision of R (ρ=2πaRa:1 m~100m;π=3.14)	0.01Ωm
	100.0Ωm~999.9Ωm		0.1Ωm
	1000Ωm~9999Ωm		1Ωm
	10.00kΩm~99.99kΩm		10Ωm
	100.0kΩm~999.9kΩm		100Ωm
	1000kΩm~9000kΩm		1kΩm
Ground interference voltage (V~) 50Hz/60Hz	AC 0.0~100.0V	±2%rdg±3dgt	0.1V
Ground interference current (A~) 50Hz/60Hz	AC 0.00mA~600.0A	±2%rdg±3dgt	0.01mA

Note

The additional error when rC max or rP max is ≤±5%rdg±5dgt.
rC max: 4kΩ+100R＜50kΩ, rP max: 4kΩ+100R＜50kΩ
The additional error at 2.5V interference voltage is ≤±5%rdg±5dgt.

Details

Applications

RDDLZ provides earth resistance testers with a measurement range of 0.00Ω-300kΩ, which are widely used in ground resistance measurement and loop resistance measurement in fields such as electric power, telecommunications, meteorology, oil fields, construction, and industrial electrical equipment. When measuring the grounding system with a loop, the ground resistance tester does not need auxiliary electrodes and does not need to disconnect the grounding wire, which is safer and faster.

Tips: 3-Wire Method for Measuring Earth Resistance

Find two independent grounding bodies RB and RC near the grounding body RA to be tested, and measure RA and RB respectively. The values of RA and RC, RB and RC are calculated to obtain the value of RA. This is the three-wire method of the ground resistance tester.

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