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Digital grounding resistance tester (multiple)
Function: Ground resistance measurement, ground voltage measurement, low value resistance measurement Resistance range: 0.01~3000 Voltage range: 0~100
Product details
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.
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 |
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