Large Grounding Grid Earth Ground Impedance Measuring Instrument Resistance Tester

• After-sales Service: 1 Year
• Warranty: 1 Year
• Max Diameter of Workpiece: <500mm
• Mass Scope of Workpiece: <900kg
• Type: Universal Testing Machine
• Maxcapacity: >1000KN
• Model NO.: HFDW-4005A
• Accuracy Grade: 0.5
• Load Way: Electronic Load
• Loading Method: Dynamic Load
• Display: Digital
• Control: Computer Control
• Weight: 0-100Kg
• Power Source: AC220V
• Oil Cylinder Position: Under
• Dispalay: Color Touch Screen
• Transport Package: Wooden Case with Foam Inside, No Fumigation,Not in
• Trademark: Hengfeng
• Origin: China
• Production Capacity: 500/Year

Product Description

                               Variable Frequency Step Voltage Ground Network Grid Earth Resistance Tester



Product introduction
Grounding resistance tester can be used to measure the multipurpose model of substation ground network (4 Ω), water fire power plant, microwave station (10 Ω) and lightning rod (10 Ω). A new type frequency conversion AC power supply is adopted, and the measures of microcomputer processing control and signal processing are adopted. The anti interference problem in the test process is solved well, and the test exercises are simplified. The process improves the accuracy and accuracy of the test results, and greatly reduces the labor intensity and test cost of the experimenters.

This instrument is suitable for testing power frequency characteristic parameters and soil resistivity of various kinds of grounding devices such as power frequency grounding impedance. The instrument adopts the technology of different frequency anti-jamming, and can accurately measure the data of power frequency 50Hz under strong interference environment. The maximum 5A of the test current will not cause too high the potential of the grounding device at the time of test, and it also has very strong anti-interference ability, so it can be measured without power interruption.

0-50A output current can be customized
0-800V output voltage can be customized


Features

1. Double frequency conversion,strong anti-interference ability. The instrument adopts the method of different frequency measurement, and with modern software and hardware filtering technology, the instrument has high anti-interference performance, and the test data is stable and reliable.

2. The precision of measurement is high. The basic error is only 0.005 Ω, which can be used to measure the earth network with very small earth impedance.

3. Powerful function. It can measure current stake, voltage stake, grounding grid impedance, grounding resistance, grounding conduction, soil resistivity, step voltage, touch voltage, potential gradient and so on.

4. GPS included Angle function.

5. Vector shunt function.The instrument automatically subtracts the current that is transferred by the tower to calculate more accurate test results.

6. Built-in 1500 Ω imitate human body resistance, when testing step voltage ,users can get the real step voltage data and curve.


7. The operation is simple. All Chinese menu operation directly shows the measurement results.

8. Simple wiring ,no large current line is needed.

9. Built-in thermal printer, easy to print and save test results.

10.USB for easy copying test data.

11.Powerful PC software

12. It is safe and reliable. The instrument has the functions of earthing protection, current limiting and voltage limiting protection, sound and light alarm, and so on to ensure the safety of the test personnel and equipment.
 

Technical Specification

Items	Specification
Impedance Measurement Range	0Ω~2000Ω
Resolution	0.001Ω
Measurement Error	±(2%rdg+0.005Ω)
Anti-Power Frequency 50HZ Voltage Interference Ability	10V
Test Current Wave	Sine Wave
Test Current Frequency	Auto 45Hz/55Hz double frequency, multiple frequency conversion groups are available for optional use
Maximum Current Output	5A
Maximum Voltage Output	400V
Test Cables requirement	Current wires copper core cross-sectional area≥2.0mm^2; Voltage wires copper core cross-sectional area≥1.5mm^2
Power Supply	AC220V±10%,50/60Hz
Data Storage	1000 groups
Computer Interface	RS232 and USB
Internal Printer	Yes
Working Temperature and Humidity	-10ºC~40ºC;80%RH below
Storage Temperature and Humidity	-20ºC~70ºC;70%rh below

 

 

FAQ:

1. How can I choose the suitable one?
Please tell us your detailed requirements by mail or online, we will recommend the suitable one as your request.
 
2. Does your price is competitive?
We have our own factory,we make sure to offer you the best quality with competitive price.
 
3. How can I pay?
We accept many payment term, such as T/T, Western Union…
 
4. When I receive it after pay?
Normal models can be delivered with 4-7days, please contact us to check transport time to your address.
 
5. How to deliver?
We can send by Express, by Sea and by Air.
 
7.What should I do if I do not know how to use?
We provide detailed operation instructions, operation videos, and engineer's online technical support.

8.What should I do if some parts broken?
We provide a 12-month warranty period and long-term maintenance services.