Large Grounding Grid Ground Earth Resistance Meter 5A Digital Earth Ground Resistance Tester

• Type: Strength Testing Machine
• Weight: 18kg
• Power Source: AC180 to 270V, 50/60Hz
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: HM3001
• Maximum Output Voltage: 450V
• Output Current: 1, 2, 3, 4, 5A
• Test Current Waveform: Sine Wave
• Transport Package: Wooden Box with Foam Inside
• Specification: 355 * 335 * 340mm
• Trademark: GDHM
• Origin: Hubei, China(Mainland)
• Production Capacity: 500 Sets Per Year

Product Description

 Large grounding grid ground earth resistance  meter  5A  digital earth ground resistance tester 

I. Summary

HM3001 Earth Grid Resistance Tester is a high-precision testing instrument used in various fields such as substations to test grounding resistance and related parameters. The instrument has the characteristics of small volume, light weight, convenient carrying, strong anti-interference performance, high accuracy, etc. The instrument is of an integrated structure, with a built-in frequency conversion power supply module, and the output power supply is continuously variable in frequency. The frequency can be changed to 45Hz or 55Hz, the high-speed processor core is built in, and the high-end digital filtering technology is adopted, thus effectively avoiding the interference of power frequency electric field to the test and fundamentally solving the difficult problem of accurate measurement under strong electric field interference. A large number of on-site tests and users' use show that when grounding grid tests are carried out in the harsh electromagnetic environment of the substation, the measurement data of the grounding resistance tester of the grounding grid are accurate, stable and good in repeatability, and are ideal instruments for measuring the characteristic parameters of large and medium-sized grounding grids.


II. Advantage
Full-touch super-large liquid crystal display
The operation is simple. The instrument is equipped with a high-end full-touch LCD screen and an ultra-large graphical operation interface. Each process is very clear and the operator can use it without additional professional training. The whole process of measurement can be completed with one touch. It is currently a very ideal intelligent measuring device.
Frequency Conversion Technology, Accurate Measurement
The anti-interference ability is strong. The internal variable frequency power supply module of the instrument provides the instrument measurement output power supply, the frequency can be changed to 45Hz or 55Hz, and the digital filtering technology is adopted, thus effectively avoiding various power frequency interference signals on site and enabling the instrument to realize high-precision, accurate and reliable measurement.
DSP high speed processor
Accurate and fast, the instrument uses a professional DSP fast digital signal processor as the processing core, which greatly improves the operation and processing capability of the instrument itself on the premise of ensuring accurate measurement data.
Whole Process Intelligent Measurement and Control
With the strong support of the internal high-performance processing core, the instrument completes a series of complicated calculation steps such as current output, voltage acquisition and frequency conversion in the whole measurement process quickly and automatically. The instrument can automatically judge the impedance of the current loop, and automatically adjust the output current value of the different frequency power supply (the maximum output current is 5A) according to the impedance. The test task can be completed automatically without human intervention. The measuring contents of the instrument include the grounding impedance z, the pure resistance component r and the pure inductance component x of the grounding grid.
Mass storage data
The instrument is internally equipped with a calendar chip and a large-capacity memory, which can store the test results in chronological order, check the historical records at any time and print them out.
PC Data Processing
The data measured by the instrument can be exported through U disk, and then related data can be consulted and managed on pc.


III. Technical index

1	Conditions of use	-15ºC∽40ºC	RH<80%
2	Anti-interference principle	Frequency conversion method
3	Electric source	AC 220V±10%	allowed generator
4	Measure output current	1A~5A   Adjustable
5	Measure output voltage	0V~400V
6	Test power frequency	45, 50, 55, 60, 65HZ single frequency 45/55, 55/65 47.5/52.5HZ Automatic Dual Frequency
7	Output rating	2000W
8	Distinguishing rate	Grounding impedance: 0.0001
		Impedance angle:0.0001°
9	Precision	Grounding impedance:±(1%* reading +0.002)
		Impedance angle:±(1%* reading +0.02°)
10	Resistance measurement range	0.001Ω~5K
11	Exterior dimensions	370(L)×295(W)×358(H)
12	Memory size	100 groups support U disk data storage
13	Weight	Main engine 22 Kg, ground pile 7 Kg