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ES3002 Double Clamp Multi-function Earth Resistance Tester

Resistance range : 0.01Ω-30KΩ
Soil resistance range : 0.0Ωm-9999KΩm
Current range : AC 0.0mA-1000A
Voltage range : AC 0.00V-600V
Measurement method: Precise four-wire、 three-wire measurement, simple two-wire measurement、Selection method, double clamp method for measuring grounding resistance

Function	Ground resistance、Soil resistivity、DC resistance、Ground voltage、AC current
Ambient temperature and humidity	23℃±5℃，below 75%rh
Interference voltage	<20V (should be avoided)
Interference current	<2A (should be avoided)
Measure R electrode spacing	a＞5d
Measured ρelectrode spacing	a＞20h
Power	8.4V lithium battery (built-in)
Backlight	Controllable backlight, suitable for use in dim places
measurement mode	Precise four-wire、 three-wire measurement, simple two-wire measurement、Selection method, double clamp method for measuring grounding resistance
Measurement methods	2.3.4-wire method measurement: Polarization method, measuring current 20mA Max Soil resistivity: four-pole method Selectivity Measurement: Polarization Method, Measuring Current 20mA Max Double clamp method: non-contact mutual inductance measurement method, test current 1mA Max DC resistance: polarization method AC current: average rectification (clamp) Ground Voltage: Average Rectification(between S-ES interface)
Test voltage waveform	Sine wave
Test frequency	128Hz
Short circuit test current	AC 20mA max
Open circuit test voltage	AC 28V max
Electrode spacing range	1m～100m
Display mode	4-bit large LCD display, with backlight
Measurement instructions	LED flashing indicator during measurement
LCD size	111mm×68mm
LCD display field	108mm×65mm
Instrument size	L/W/H：277.2mm×227.5mm×153mm
Clamp size	L/T/H：101mm×27mm×214mm
Test line	4 strips：red 15m，black 15m, yellow 10m，green 10m each one
Simple test line	2strips：yellow 1.5m，green 1.5m each one
Auxiliary Grounding rod	4PCS：φ10mm×200mm
Current clamp	2PCS：Banana plug
Current clamp diameter	φ50mm
Current clamp lead	Length 2m
Measure time	AC current：about 2 times/sec; Ground voltage：about 2 times/sec; grounding resistance、soil resistivity: about 7 seconds/time
Line voltage	Measurement below AC100V (ground voltage measurement function cannot be used to measure commercial power)
USB interface	With USB interface, storage data can be uploaded to the computer, save and print
Communication Line	One USB communication line, 1.5m long
Data storage	500 groups, “MEM” storage indicates, flashing “FULL” symbol indicates that the memory is full
Data review	Data review function: “MR” symbol display
Overflow display	Over-range overflow function: “OL” symbol display
Current clamp low current indication	When measuring by the selection method or the double-clamp method, when the current signal received by the current clamp A is lower than 0.5 mA, the symbol “ ” is displayed, and at this time, the clamping direction of the current clamp A should be checked.
Interference test	Automatic identification of interference signals, “NOISE” symbol indication when the interference voltage is higher than 5V
Auxiliary grounding test	With auxiliary ground resistance test function, 0.00KΩ ~ 30kΩ (Rh max = 3kΩ +100R <50kΩ; Rs max = 3kΩ +100R <50kΩ)
Alarm function	Alarm when the measured value exceeds the alarm setting value
Battery voltage	Real-time display of battery power, reminding timely charging when battery voltage is low
Automatic Shutdown	“APO” Indicates, automatic Shutdown After 15 Minutes
Power consumption	Standby: 40mA Max(Backlight off)
	Turn on backlight: 43mA Max
	measuring：120mA Max(Backlight off)
Weight	Instrument： 2430g(with battery)
	Current clamp：940g(2PCS)
	Test lines：1300g(including simple test line)
	Auxiliary grounding rod： 850g(4PCS)
Working temperature and humidity	-10℃～40℃；below 80%rh
Storage temperature and humidity	-20℃～60℃；below 70%rh
Overload protection	Grounding resistance：AC 280V/3 seconds between H-E and S-ES ports
Insulation resistance	20MΩ以上(500V between circuit and housing)
Pressure resistance	AC 3700V/rms(between circuit and housing)
Electromagnetic properties	IEC61326(EMC)
Suitable for safety regulations	IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、pollution level 2)； IEC61010-031； IEC61557-1(grounding resistance)； IEC61557-5(soil resistivity)； JJG 366-2004. JJG 366-2004(ground resistance meter)； JJG 1054-2009(Clamp grounding resistance meter).