1.5mA 15mA 150mA 300mA 3A Winding Resistance Ohmmeter Transformer Resistance Meter

• Display Type: Digital Only
• Certification: CE
• Customized: Customized
• Model NO.: HTZZ-3A
• Transport Package: Carton
• Specification: see details
• Trademark: HV TEST
• Origin: China
• HS Code: 9030849000
• Production Capacity: 300 Sets Per Month
• Package Size: 46.00cm * 44.00cm * 29.00cm
• Package Gross Weight: 34.000kg

Product Description

Brief introduction
DC resistance measurement of transformer winding is an essential test project during transformer transfer, repair and changing tapping switch. Measuring DC resistance of transformer winding, you can check out weld or connection quality of down-lead, the winding inter-turn short circuit or open circuit, and whether tap-changer is well contacted. In the previous it is generally to use QJ44 double bridge to measure DC resistance, but the measuring current for this type of bridge is mA level current. So measurement will take a long time, and accuracy is lower. In order to change the above situation, our company has developed HTZZ-3A DC Resistance Rapid Tester.
This instrument is a high-precision regeneration product used to replace DC single/double bridge. Equipped with advanced switch power supply technology, the measurement speed of the instrument is faster a hundred times than that of the bridge. Using four and half bits LCD to display the measurement results and  three and half bits LCD to display ambient temperature or test current value, it overcomes the shortcoming of other similar products that it is difficult to read value from the LED display in the sun and possesses automatic arc suppression function. The instrument is characterized by fast test speed, high precision, intuitive display, strong anti-interference ability, small size, low power consumption, stable and reliable test data. Built-in rechargeable battery pack (12V) and AC/DC dual-use, the instrument is very convenient for on-site and field test.
The instrument meets DLT 845.3-2004 "resistance measurement device general technical requirements- Part 3 DC Resistance Tester" requirements.

Products features
1. Fast test: The maximum output charge current of the instrument is up to 3A. When measuring it can effectively compensate current inertial for large inductor and accelerate core saturation, thereby reduced the charging time and increased test speed. Its test speed is faster hundreds of times than the traditional single instrument and double bridge.
2. High accuracy: The application of advanced four-terminal measurement and constant current source technology to the instrument makes the inductive load charging current hold a relatively stable value. Base on that, and the instrument with stable anti-sense capability and strong anti-interference characteristics can ensure the accuracy of measurement. And the use of imported high-quality components not only improves the measurement accuracy, but also makes the instrument have good repeatability.
3. Wide measurement range: resistance measurement range 1μΩ ~ 20KΩ, wide range.
4. AC and DC power supply: Attached rechargeable battery, the instrument can use AC and DC power supply. Portable design, it is easy to carry and use.

Product parameters

Working condition	Temperature	0ºC~40ºC
	Relative humidity	≤85%RH
Measurement range	Seven-gear range	1μΩ~20mΩ
		20mΩ~200mΩ
		0.2Ω~2Ω
		2Ω~20Ω
		20Ω~200Ω
		200Ω~2kΩ
		2kΩ~20kΩ
Measuring accuracy	±(0.2%+2d)
Resolution	1μΩ
Constant current source	3A(1μΩ~20mΩ,20mΩ~200mΩ,0.2Ω~2Ω)
	300mA(2Ω~20Ω)
	15mA(20Ω~200Ω)
	1.5mA(200Ω~2kΩ)
	150mA(2kΩ~20kΩ)
Working voltage	DC	12V~16.8V
	AC	220V
Power Dissipation	≤15W
Dimension	365×330×180mm^3
Weight	5kg (including test clamp and test lead)

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]