Digital Earth Resistance Tester Grounding Resistance Tester

• Max Diameter of Workpiece: <500mm
• Mass Scope of Workpiece: <900kg
• Type: Universal Testing Machine
• Maxcapacity: >1000KN
• Accuracy Grade: 0.5
• Load Way: Electronic Load
• Model NO.: HFDW-8000D
• Loading Method: Dynamic Load
• Display: Digital
• Control: Computer Control
• Weight: 0-100Kg
• Power Source: AC220V
• Oil Cylinder Position: Under
• Transport Package: Wooden Case with Foam Inside, No Fumigation,Not in
• Trademark: Hengfeng
• Origin: China
• Production Capacity: 500/Year

Product Description

                                   Digital Earth Resistance Tester Grounding Resistance Tester


Product introduction
HFDW-8000D soil resistivity earth resistance tester is controlled by a microprocessor and can accurately detect ground resistance, soil resistivity, and ground voltage. It uses a fast filtering technique to minimize interference. Displaying the resistance value of the auxiliary electrode in the same screen, which is convenient for judging the measurement error caused by environmental factors, facilitating more accurate measurement of the grounding true resistance value, and storing 500 sets of data at the same time.Widely used in telecommunications, electricity, meteorology, computer rooms, oil fields, power distribution lines, iron tower transmission lines, gas stations, factory grounding networks, lightning rods and so on. The instrument has the characteristics of precise, fast, simple, stable and reliable.

Function
grounding resistance, soil resistivity;Ground voltage, AC voltage measurement
 

Technical Specification

 

Grounding resistance range	0.01Ω~3000Ω    Accuracy±1.5%rdg±3dgt
Grounding resistance resolution	0.01Ω
Grounding voltage range	0~100V AC        Accuracy±1.5%rdg±3dgt
Grounding voltage resolution	0.01V
base condition	23ºC±5ºC,below 75%rh   (Auxiliary grounding resistance 100Ω±5%,voltage to ground<10V)
Function	Ground resistance measurement, ground voltage measurement, low value resistance measurement
Power	DC 6V 4.5AhLead-acid battery, standby for more than 100 hours
Backlight	Controllable gray screen backlight, suitable for use in dim places
Measuring mode	Precise three-wire measurement, simple two-wire measurement
Measuring methods	Grounding resistance: rated current change pole method, 128Hz; Ground Voltage: Average Rectification
Test frequency	128Hz
Short-circuit test current	> 20mA ( sine wave)
Wire resistance check	Avoid the errors cause of the test line is not fully inserted into the instrument interface or the contactor is incorrectly replaced or the user replaces the extended test lead, to make the ground resistance test more accurate
Display mode	4-bit large LCD display, gray screen backlight
Measurement instructions	LED flashing indicator during measurement, LCD countdown display
LCD size	108mm×65mm
Instrument size	L/W/H:277.2mm×227.5mm×153mm
Test line length	3 strips:red 15m,yellow 10m,green 5m each one
Simple test line	2 strips:yellow 1.6m,green 1.6m each one
Auxiliary grounding rod	2PCS:φ10mm×200mm
Measure time	Ground voltage: about 3 times/sec; grounding resistance: about 5 seconds/time
Measurement times	More than 5000 times
Line voltage	Measuring voltage to ground: test below AC 100V
USB interface	With USB interface, software monitoring, 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 instructions, display "FULL" symbol indicates that the storage is full
Data review	Data review function: "MR" symbol display
Overflow display	Over-range overflow function: "OL" symbol display
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 shut-down	"APO" indicates automatic shutdown after 15 minutes
Power consumption	Standby: 40mA Max (backlight off)
	Turn on backlight: 43mA Max
	Measurement: 120mA Max (backlight off)
Weight	Instrument: 2397g (with battery)
	Test line: 850g (including simple test line)
	Auxiliary grounding rods: 425g (2)
	Instrument bag: 271g
Working temperature and humidity	-10ºC~40ºC;below 80%rh
Storage temperature and humidity	-20ºC~60ºC;below 70%rh
Overload protection	Grounding resistance: AC 280V/3 seconds between E-H and E-S ports
Insulation resistance	Above 10MΩ (500V between circuit and case)
Pressure resistance	AC 3700V/rms(between circuit and case)
Electromagnetic properties	IEC61010-4-3,Wireless frequency electromagnetic field≤1V/m
Suitable for safety regulations	IEC61010-1,IEC1010-2-31,IEC61557-1,5,IEC60529(IP54),pollution level 2,CAT  300V