High Quality Ground Network Earth Resistance Meter for Contact Voltage Measuring

• Customization: Available
• After-sales Service: Support
• Warranty: 1 Year
• Model NO.: HM3001
• Type: Earth Resistance Tester
• Weight: 18kg
• Power Source: AC180 to 270V, 50/60Hz
• Maximum Output Voltage: 450V
• Test Current Waveform: Sine Wave
• Measurement Range: 0~5000 Ω
• Resolution: 0.001m Ω
• Measurement Error: ± (Reading 2% + 0.005 Ω)
• Test Current Frequency 1: Single Frequency: 40-70Hz
• Test Current Frequency 2: 50±0.1Hz to 50±10.0Hz
• Output Current: 5A or External Power Supply 30A
• Output Voltage: 400V or External Power Supply: 1000V
• Certificate: ISO
• Transport Package: Wooden Box with Foam Inside
• Specification: 355 * 335 * 340mm
• Trademark: HMDQ
• Origin: Hubei, China(Mainland)
• HS Code: 9030332000
• Production Capacity: 500 Sets Per Year
• Package Size: 116.00cm * 60.00cm * 52.00cm
• Package Gross Weight: 60.000kg

Product Description

High quality Ground Network Earth Resistance meter for contact voltage measuring 

Summary

HM3001 Earth Net Grounding Resistance Tester is a special instrument to measure the ground resistance between the ground net and the ground connection site. The instrument adopts frequency conversion anti-interference technology, which does not need large current measurement, and can measure the accurate data of 50Hz in the strong interference environment of the substation. The measurement results are displayed by the large-screen liquid crystal, and can be printed and output with its own micro printer. The instrument can measure the grounding impedance and grounding resistance at the same time, which can truly reflect the actual characteristics of the ground grid



Advantage
1. Good power frequency equivalence is measured. The test current waveform is sine wave, and the frequency difference is 0.1Hz and the maximum is 10Hz. It can be used at either 50 hz or 60 hz frequencies.
2. Strong anti-interference ability. The instrument adopts the different frequency method measurement, combined with the modern hardware and software filtering technology, make the instrument has a very high anti-interference performance, the test data is stable and reliable.
3. High measurement accuracy. The basic error is only 0.005 Ω, which can be used to measure the earth net with very small grounding impedance.
4. Powerful features. It can measure current pile, voltage pile, ground grid impedance, grounding resistance, grounding conduction, soil resistivity, step voltage, contact voltage, potential gradient, etc.
5. Full touch LCD screen, large full graphical operation interface, every process is very clear. Operators need no additional training for professional use. The whole process is tested with a little touch.

1.  It is equipped with calendar chips and large memory to save results at any time. Always view history and print out. Both the current time and the storage time can be displayed and printed.
2.  Scientific and advanced data management: instrument data can be exported through U disk, and data can be viewed and managed on any PC through special software. Capable to generate reports and test reports.

8. Safe and reliable. The instrument has grounding protection, current limit and pressure limit protection, sound and light alarm functions to ensure the safety of test personnel and equipment.
9. With the vector test function, it can measure the impedance and pure resistance of the ground grid. The impedance angle can be measured.
10. The wiring labor amount is small, no need for large current line.
11. Integrated model, with standard resistance and constant current source, to facilitate field testing and reduce field wiring.
12. The instrument is easy to operate, and the measurement process is controlled by the microprocessor. As long as the correct measurement method is selected, the measurement of the data can be automatically completed under the control of the microprocessor.
13. When the user needs a high current test (such as 30A), the instrument can be implemented by using the method of external power supply.



Technical index

1. Host technical parameters
1. Measurement range: 0~5000 Ω (including impedance of current pile)
2. Resolution: 0.001m Ω
3. Measurement error: ± (reading 2% + 0.005 Ω)
4. Anti to power frequency 50Hz voltage interference ability: 10V
5. Test the current waveform: a sine wave
6. test current frequency: single frequency: 40-70Hz resolution 0.1Hz set at will
Double frequency: 50±0.1Hz to 50±10.0Hz to set freely
60±0.1Hz To 60±10.0Hz set up
7. Output current: 5A or external power supply 30A
8. Output voltage: 400V or external power supply: 1000V
9. Measurement line requirements:
current wire copper core cross-sectional area of 1.5mm²
 The copper core cross-sectional area of the voltage wire is 1.0mm²
10. Test power supply: built-in 2kW frequency conversion power supply or external high-power frequency conversion power supply.
11. Power supply: AC220V± 10%, 50Hz
12. The overall dimension: 500mm * 377mm * 330mm instrument weight: 20kg