Digital grounding resistance tester (multiple)

The ES3000 digital grounding resistance tester (multifunctional type) is a commonly used instrument for testing and measuring grounding resistance. It adopts a large LCD gray white screen backlight display and microprocessor technology to meet the requirements of two-wire and three wire testing resistance. Suitable for telecommunications, power, meteorology, computer rooms, oil fields, power distribution lines, iron tower transmission lines, gas stations, factory grounding grids, lightning rods, etc. The instrument testing is characterized by precision, speed, simplicity, stability, and reliability.

Controlled by a microprocessor, it can automatically detect the connection status of various interfaces and the interference voltage and frequency of the grounding network, and has the function of testing the resistance value of the auxiliary grounding electrode. Simultaneously storing 500 sets of data, resistance measurement range: 0.01 Ω~2000 Ω, grounding voltage range: 0~100V. Data can be monitored online through monitoring software, USB data can be uploaded to PC, and it has unique functions such as numerical retention and intelligent alarm prompt.

Composed of a host, monitoring software, testing cable, USB cable, and grounding pin, it has functions such as historical data reading, viewing, saving, reporting, and printing.

Range of grounding resistance	0.01 Ω~3000 Ω accuracy ± 1.5% rdg ± 3dgt
Ground resistance resolution	0.01Ω
Grounding voltage range	0-100V AC accuracy ± 1.5% rdg ± 3dgt
Ground voltage resolution	0.1V
Benchmark conditions	23 ℃± 5 ℃, below 75% RH (auxiliary grounding resistance 100 Ω± 5%, ground voltage<10V)
work ability	Ground resistance measurement, ground voltage measurement, low value resistance measurement
electricity source	DC 6V 4.5Ah lead-acid battery with continuous standby time of over 100 hours
body's back light	Controllable gray and white screen backlight, suitable for use in dark fields
Measurement method	Precision three line measurement, simple two line measurement
measuring method	Grounding resistance: rated current pole changing method, 128Hz; Ground voltage: average rectification
Test frequency	128Hz
Short circuit test current	>20mA (sine wave)
Line resistance verification	To avoid errors caused by incomplete insertion of the test line into the instrument interface, poor contact, or user replacement of extended test lines, and to ensure more accurate measurement of grounding resistance.
display mode	4-digit ultra large LCD display, gray and white screen backlight
Measurement indication	LED flashing indication during measurement, LCD countdown display
LCDsize	108mm×65mm
Instrument size	Length, width, and height: 277.2mm × 227.5mm × 153mm
Test line length	3 pieces: 1 red 15m, 1 yellow 10m, and 1 green 5m each
Simple testing line	2 pieces: 1 red 1.6m, 1 green 1.6m each
Auxiliary grounding rod	2 pieces: 10mm x 200mm in diameter
Time	Ground voltage: approximately 3 times per second; Grounding resistance: about 5 seconds/time
Measurement frequency	Over 5000 times (Measure 10 Ω at 20 Ω level, test once, stop for 25 seconds and then test again)
line voltage	Measurement of ground voltage: measured below AC 100V
USBinterface	Equipped with USB interface, software monitoring, data storage for uploading to computer, saving and printing
open up or clear out by poking or jabbing interrogate line	One USB communication cable, 1.5m in length
Data Storage	500 sets, flashing the "FULL" symbol indicates that the storage is full
data hold	Data retention function: "HOLD" symbol display
Data retrieval	Data retrieval function: "READ" symbol display
Overflow display	Overscale overflow function: "OL" symbol display
Alarm	When the measured value exceeds the alarm set value, an alarm prompt will be issued
battery voltage	Real time display of battery level, reminding timely charging when battery voltage is low
Automatic shutdown	APO "indicates that it will automatically shut down after 15 minutes of startup
work consume	Standby: 40mA Max (backlight off)
	Power on backlight: 43mA Max
	Measurement: 120mA Max (backlight off)
nature measure	Instrument: 2397g (including battery)
	Test line: 850 (including simple test line)
	Auxiliary grounding rod: 425g (2 pieces)
	Instrument bag: 271g
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 ports E-H and E-S
insulation resistance	Above 10M Ω (500V between circuit and casing)
Resistance press	AC 3700V/rms (between circuit and casing)
Electromagnetic characteristics	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 III 300V