Earth & Ground Grid Test System MCDF9000

Large Ground Testing EPR/GPR/Current Split Earth & Ground Grid Test System

System Features

1) Widely used to determine earth grid integrity and potential contour measure in large grounding system

such as critical utility, substation, power plant, telecommunications and industrial assets, etc.

2) Adopting wireless current split vector measurement technology, it can accurately measure current split

vector of each structure tower of transmission line under strong interference.

3) With strong anti-interference technology, work properly at interference signal 10000times measuring signal.

4) Main measurements commonly performed as below:

- EPR / GPR

- Step & Touch Potential

- Current split / branch and vector, current split coefficient

- Resistance & Impedance

- Soil Resistivity

- Grounding system impedance

- Continuity / remote bonding resistance

- Lightning impulse impedance testing

System Comprising

1. Variable frequency power source
2. Isolation transformer
3. Frequency-selectable multi-meter
4. Wireless current split measurement unit
5. Lightening impulse test unit
6. Remote Earth continuity Test Unit
7. Variable Frequency Earth impedance Test Unit
8. Rogowski coil
9. Wireless frequency-selectable communication unit
10. Transmission GPS antenna device, etc.

System General Technical Parameters

Power supply: AC 380V / 220 V automatic adaptation, 50 Hz / 60 Hz

Output voltage: 0 ~ 800V or customized, sine wave, continuously adjustable

Output current: 0 ~ 50A, can be customized

Measurement range and accuracy:

Voltage measurement range: 0 ~ 400V;

Voltage measurement accuracy: ± (0.5% reading + 0.5mV);

Voltage resolution: 0.01mV;

Current measurement range: 0-50A;

Current measurement accuracy: ± (0.5% reading + 0.5mA);

Current resolution: 0.01mA

Grounding impedance measurement range: 0.001-1000 Ω;

Grounding impedance measurement accuracy: ± (1% reading + 1m Ω);

Grounding impedance resolution: 0.001M Ω;

Phase angle (impedance angle) measurement range: 0 ° to 360 °

Phase angle (impedance angle) measurement accuracy: ± 0.2 °;

Phase angle (impedance angle) measurement resolution: 0.01 °;

Technical Parameters of comprising devices

1. MCDF9100 variable frequency power supply 1 set

Output power: 5 ~ 50KW, customizable

Input power supply: AC220 V or 380 V ± 10% automatic adaptation to 50 Hz;

Output mode: single phase

Output frequency: 40 ~ 70Hz, step 1 Hz, arbitrary frequency conversion, including 49, 50, 51 Hz;

Frequency stability: better than 0.02Hz;

Large screen touch operation, simple and convenient;

With over-voltage, over-current, overheating and other protection functions;

With special anti-interference design to ensure normal operation under strong interference;

Optional support remote optical fiber control to ensure personal safety.

2. MCGCB-10 isolation transformers 1-2 set

Output capacity: matching with frequency conversion power supply

Output frequency: 40 ~ 70Hz;

Output voltage: single phase 0 ~ 400V ~ 800V or customized;

With strong anti-interference function to ensure normal operation under strong interference;

3. DF9001D multi function frequency selectable multimeter

Used to measure voltage, current and phase difference under specified frequency, eliminate interference

of other frequencies, and get accurate measurement results.

Worldwide leading super frequency selective anti-jamming technology. When the interference is 1200

times larger than that of different frequency signals, it can still be measured accurately.

Voltage range: 20mV / 200mV / 2V / 20V / 400V, 5-gear automatic shift;

Current range: 20mA / 200mA / 2A / 20A / 50A, 5-gear automatic shift

Measurement frequency selection range: 40 ~ 70Hz, step frequency: 0.1Hz

Voltage measurement range: 0 ~ 400V;

Voltage measurement accuracy: ± (0.5% reading + 0.5mV);

Voltage resolution: 0.01mV;

Current measurement range: 0-50A;

Current measurement accuracy: ± (0.5% reading + 0.5mA);

Current resolution: 0.01mA

Grounding impedance measurement range: 0.001-1000 Ω;

Grounding impedance measurement accuracy: ± (1% reading + 1m Ω);

Grounding impedance resolution: 0.001M Ω;

Phase angle (impedance angle) measurement range: 0 ° to 360 °

Phase angle (impedance angle) measurement accuracy: ± 0.2 °;

Phase angle (impedance angle) measurement resolution: 0.01 °;

Weight: About 5kg.

4. MCDFWF wireless frequency selective communication instrument

The main function of DFWF wireless frequency selection communication instrument is to communicate

with the remote wireless shunt measurement unit.

Power supply: DC 12V

With special tripod and antenna, stable signal and long transmission distance

Wireless communication distance: more than 2000m under barrier free condition

5. MCDF9005 wireless shunt measurement unit

The DF9005 wireless shunt measurement unit is mainly used for the measurement of tower shunt.

It has powerful function, strong anti-interference ability and high measurement accuracy. It can directly

measure the direction and size of the shunt of each tower.

Super frequency selective anti-jamming technology, anti-interference performance is better than 10000 times;

With Rogowski coil, the measurement range of different frequency shunt: 2mA ~ 20A;

Shunt measurement accuracy with Rogowski coil: ± (2% reading + 2mA);

6. Flexible Rogowski coil

Flexible Rogowski coil is mainly used to measure the shunt of tower, which can be easily wrapped

around the conductor for measurement.

Coil length: 3M

Frequency response: 10Hz ~ 50KHz

Linearity: 0.2%

Flexible opening sampling, can be measured around the cylindrical conductor.

Portable, easy to use, no magnetic material, no saturation;

It has excellent frequency characteristics and fast response speed;

It has small distortion and low insertion loss;

The opening of the secondary circuit does not cause danger and will not damage other equipment

in case of current overload.

7. MCDFDT-10A grounding downlead conduction tester (optional)

It is applicable to the measurement of the on resistance between the

grounding down lead of power equipment and the grounding grid

(for adjacent equipment), as well as the measurement of low resistance

resistance value.

Measurement range: 1 ～ 1999m Ω

Resolution: 0.1M Ω

Test current: DC 1A, 2A, 5A and 10A

Measurement accuracy: ± (0.5% + 2d)

Measuring radius: 50m

Display mode: LCD backlight display

Working mode: continuous

Working power supply: AC220 V ± 10% 50 Hz or built-in battery power supply

8. Special GPS positioning instrument for DFGT grounding

The special GPS positioning instrument for DFGT grounding, the instrument mainly solves the problem

that conventional GPS equipment can not calculate the angle of voltage pole and current pole and the linear distance.

Main functions and features:

Real time display voltage pole, current pole linear distance and included angle, easy positioning

Built in impedance correction formula

Location and calculation data storage, download, restore

National Road voice and 3D real scene navigation

Design of seven Inch Touch Screen

Music and movie playing

High speed internet surfing

Notepad, leisure games and other applications

Field test photos

Zhengzhou Great Electric Co.,Ltd, established in 2011, is a fast growing company in Zhengzhou, Henan Province, in the same year, Henan Muchen Trading Co.,Ltd was founded as our export sales company, taking charge of all export deals.

We specialize in production & supply of high-quality products for power field, high voltage field, power lab, etc. Our major products includes: meter test equipment, transformer test equipment, high voltage test equipment, relay test equipment, instrument transformer…etc.

After ten years’ efforts and focusing on products improvement, our solution & offer can compete with some major competitors from Europe and US, such as Zera, MTE, Radian…etc, just as a result, we setup strong relationship with our partners in some countries like Brazil, India, Vietnam, Bangladesh, South Africa, Paraguay, Colombia, Israel, Uzbek, Malaysia, Indonesia….etc

Together with our partners in overseas countries, we won many projects and also we are winning.

We offer technical and commercial assistance to our customers, serving them to maintain their time and cost schedules; we offer valuable solution and help our partners to win with excellent quality with competitive prices and good after sales service; we are devoted to develop and setup partnership with our clients to get one win-win.

Our management team and experienced staff are committed towards meeting our client’s specific objectives by offering valuables.

Our mission is: Focus on power field, basing on technology and innovation, providing valuable solution, grow together with our partners in the world.

Welcome to visit us and we are here ready to provide all the necessary assistance you want, sincerely hope we can have good chances to work together and setup long term cooperation relationships.