ES3050 digital equal potential tester is also known as micro-ohmmeter, ohmmeter, DC grounding resistance tester, using the most microprocessor technology, four-wire test, safe and reliable.It is a special instrument for detecting equipotential bonding quality between metal components of objects such as housings, lightning protection belts, ground beams, structures, cabinets, steel bars, pipes, windows, guardrails, radiators, and assembly lines.It can also measure the resistance of the connection conductors between various electrical equipments and earth ground, the DC resistance of transformers, and also can measure the contact resistance of switches and socket contacts, coils, metal wires, welding points and other low-value resistances.Widely used in telecommunications, electric power, meteorology, computer room, oil field, power distribution lines, iron tower transmission lines, gas stations, factory grounding grids, lightning rods, etc. It also has the function of measuring DC voltage and AC voltage.
        The ES3050 digital equipotential tester consists of a host computer, monitoring software, test leads, and communication lines.The mainframe large-screen LCD display is clear at a glance.Can store 500 sets of data, resistance measurement range: 0.0001 Ω ~ 30K Ω, DC voltage range: 0.0 ~ 1000V, AC voltage range: 0.0 ~ 750V.The monitoring software has on-line real-time monitoring and historical query functions, dynamic display, alarm value setting and alarm indication function, and functions such as reading, reviewing, saving, reporting and printing of historical data.

Function	Equipotential bonding resistance test between metal components, low-value resistance test, resistance test of connecting conductors between ground and ground electrodes, contact resistance test, etc.
DC resistance range	0.0001Ω～30.00KΩ    Accuracy±1%rdg±5dgt
Resistance resolution	0.0001Ω
Test method	Four-wire test
Test current	≥1A
Open circuit voltage	≤7V
Capacity factor	Measuring capacity factor≤15W
DC voltage range	0.0V～1000V DC        Accuracy±1.5%rdg±5dgt
DC voltage resolution	0.1V
AC voltage range	0.0V～750V AC         Accuracy±1.5%rdg±3dgt
AC voltage resolution	0.1V
Power	DC 6V 4.5Ah Large-capacity battery Continuous standby for more than 100 hours
Backlight	Controllable gray screen backlight, suitable for use in dim places
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	Red 5m，black 5m each 2PCS
Measure time	Resistance test：about 3second/time；Voltage test：about 2times/sec
USB interface	With USB interface, software monitoring, storage data can be uploaded to the computer, save and print
Communication Line	USB Communication Line 1PC
Data storage	500 groups，"MEM" stores indicates, the "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: 30mA Max(backlight off)
	Turn on backlight: 43mA Max
	Measure：2A Max(backlight off)
Weight	Instrument： 2397g(including battery)
	Test line：850g(including simple test line)
	Instrument box：1200g
Working temperature and humidity	-10℃～40℃；below 80%rh
Storage temperature and humidity	-20℃～60℃；below 70%rh
Overload protection	C1-C2 P1-P2 AC 280V/3 seconds between ports
Insulation resistance	Above 10MΩ(500V between circuit and housing)
Pressure resistance	AC 3700V/rms( between circuit and housing)
Electromagnetic properties	IEC61010-4-3，Wireless frequency electromagnetic field≤1V/m
Suitable for Safety Regulations	IEC61010-1, CAT III 600V, pollution degree 2, JJG724-1991 "DC digital ohmmeter verification procedure", JJG166-1993 "DC resistance verification procedure", "DL/T967-2005 loop resistance tester and DC resistance fast Tester verification procedure

Instrument	1PC
Instrument box	1PC
Monitoring Software CD	1PC
USB communication line	1PC
Test line	4PCS（red 5m，black 5m each 2）
charger	1PC
Manual, certificate	1SET

FR3010 Digital Ground Resistance Tester (Simple)

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