Htdw-3A Large-Scale Digital Intelligent Grid Ground Network Earth Resistance Tester

• Display Type: Digital Only
• Certification: CE
• Customized: Customized
• 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.: HTDW-3A
• Impedance Measurement Range: 0~200 Ohm
• Resolution: 0.001 Ohm
• Maximum Output Voltage: AC 400V (45Hz,55Hz, Double Frequency, Sine Wave)
• Maximum Output Current: AC 3A (45Hz,55Hz, Double Frequency, Sine Wave)
• Current Output Gear: 3/2.5/2/1.5/1A
• Anti-Jamming Capability: Anti- Frequency 50Hz Voltage 10V
• Measured Wire Required Value-1: Current Wire Copper Core More Than 1.5 mm2
• Measured Wire Required Value-2: Voltage Wire Copper Core More Than 1.0 mm2
• Dimension: 295*340*310mm3
• Weight: 28kg
• Colour: Black
• Certificate: Ce/ISO
• Style: Portable
• Transport Package: Carton
• Specification: see details
• Trademark: HV TEST
• Origin: China
• HS Code: 9030332000
• Production Capacity: 300 Sets Per Month
• Package Size: 29.50cm * 34.00cm * 31.00cm
• Package Gross Weight: 30.000kg

Product Description

Product overview
Currently in the power system, it is mainly used frequency large current three-pole measurements to test the ground network earth resistance. In order to prevent frequency interference generated by the power grid operation, to improve the accuracy of the measurement results, insulation preventive test code states: the test current of frequency large current method shall not be less than 30A. Thus, the test equipment is too heavy; the test process is complex; large work strength, long test time and many other issues.
Ground Network Earth Resistance Tester adopts the new variable frequency AC power, and take advantage of computer processing control and signal processing, to solve the interference problem of testing process, simplifying the test operation process, improve the precision and accuracy of test results, greatly reduce the labor intensity and testing costs.

Products features
1. Good frequency equivalence. The measured current waveform is sine wave, the difference between frequency and power frequency is 5Hz, use 45Hz and 55Hz two frequency to test.
2. Strong anti-jamming ability, use different frequency method , assorted with modern hardware and software filtering techniques, make the device with strong anti-jamming ability, test results stable and reliable.
3. High precision, intrinsic error 0.005Ω, can test the ground network of small impedance.
4. Powerful: can test current pile, voltage pile, ground resistance, pace voltage, contact voltage.
5. Easy to operate, menu operated, directly display the test results.
6. Do not need high current wire.

Technique parameters

Impedance measurement range	0~200Ω
Resolution	0.001Ω
Measurement error	±(reading×2%+0.005Ω)
Maximum output voltage	AC 400V (45Hz,55Hz, double frequency, sine wave)
Maximum output current	AC 3A (45Hz,55Hz, double frequency, sine wave)
Current output gear	3/2.5/2/1.5/1A
Anti-jamming capability	Anti- frequency 50Hz voltage 10V
Measured wire required value	Section surface of current wire copper              core≥1.5 mm2
	Section surface of voltage wire copper              core≥1.0 mm2
Power supply	AC 220V±10%,50Hz
Dimension	295×340×310mm3
Weight	28kg

Common problem
1. Is your company a sales company or a manufacturer?
Wuhan Huatian Electric Power Automation CO., LTD.is an industrial and trade enterprise, with its own  factory, self-produced and self-sold. We were founded in 2004 and have fifteen years of production experience. Our company has reliable production lines, test rooms and R&D centers.

2. Whether the goods are in stock, whether they can be customized, and how long the delivery time is.
After the goods have been ordered, we can be made to order according to the special requirements of customers by using the latest technology. The delivery time is usually within 10 working days if there are no accidents.

3. Is the quality guaranteed?
In order to ensure quality, we use imported components in large quantities. After three times of quality inspection, the goods can be sent out, and the export is uniformly packed in non-fumigation wooden boxes.

4. What are the after-sales terms?
We offer free consulting service, one year warranty, and adopt various methods such as email communication, video calls, technology door-to-door, aiming to solve any after-sales problems in a timely manner.

5. What are the cooperative countries or regions?
Products have been successfully exported to the United States, Brazil, Australia, Russia, the Netherlands, Indonesia, Bangladesh, Iran, India, Saudi Arabia, Mongolia, Japan and other countries and regions. In the United States, India, Vietnam and other regions have cooperative distributors, can provide thoughtful services.


Contact us

Wuhan Huatian Electric Power Automation CO., LTD

Address: T4, No. 1, High-tech 2 Road,East Lake High-tech Development Zone,Wuhan
Zip code: 430074
Tel:[phone]
Fax: [phone]