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HTZZ-2A DC Resistance Rapid Tester (2A)
Fast testing speed: The maximum output charging current of the DC low resistance tester can reach 2A, which accelerates the saturation of the iron cor
Product details
Product IntroductionProduct Introduction
The DC resistance test of transformer windings is an indispensable test item for transformers after handover, major repairs, and changes to tap changers. By measuring the DC resistance of the transformer winding, the welding or connection quality of the leads, the presence of inter turn short circuits or open circuits in the winding, and the good contact of the tap changer can be checked. In the past, QJ44 double arm bridge was used to measure direct resistance, and the measurement current of this type of bridge is in the milliampere range, which requires a long measurement time and low accuracy. In order to change this situation, shorten measurement time, and reduce the workload of testers, our company has developed a DC low resistance tester.
The DC low resistance tester is a high-precision replacement product for DC single and double arm bridges. The instrument adopts advanced switching power supply technology, with a measurement speed more than 100 times faster than that of a bridge. The display part displays the measurement results on a four and a half digit LCD liquid crystal display, and the environmental temperature or test current value on a three and a half digit LCD liquid crystal display. It overcomes the disadvantage of other similar products that display values on LED in sunlight, and also has an automatic arc extinguishing function. The DC low resistance tester has the advantages of fast speed measurement, high accuracy, intuitive display, strong anti-interference ability, small size, low power consumption, stable and reliable test data, and is not affected by human factors. The instrument is equipped with a rechargeable battery pack (14.8V), which can be used for both AC and DC, making it convenient for on-site and field testing.
The DC low resistance tester meets the requirements of DL/T 845.3-2004 "General Technical Conditions for Resistance Measurement Devices Part 3: DC Resistance Tester".
Product Name: DC Resistance Speed Tester, Transformer DC Resistance Tester, Transformer DC Resistance Speed Tester, Transformer DC Resistance Fast Tester, Inductive Load DC Resistance Speed Tester, Inductive Load DC Resistance Fast Tester, Inductive Load DC Resistance Tester, DC Low Resistance Tester
Product parametersProduct Parameters
Technical Parameter
| Conditions of Use | ambient temperature | 0℃～40℃ |
| Relative temperature | ≤85%RH | |
| measuring range | Seven range range | 1μΩ～20mΩ |
| 20mΩ～200mΩ | ||
| 0.2Ω～2Ω | ||
| 2Ω～20Ω | ||
| 20Ω～200Ω | ||
| 200Ω～2kΩ | ||
| 2kΩ～20kΩ | ||
| measurement accuracy | ±(0.2%+2d) | |
| Highest resolution | 1μΩ | |
| Constant current source | 2A (1 μ Ω～ 20m Ω, 20m Ω～ 200m Ω, 0.2 Ω～ 2 Ω) | |
| 200mA(2Ω～20Ω) | ||
| 10mA(20Ω～200Ω) | ||
| 1mA(200Ω～2kΩ) | ||
| 100uA(2kΩ～20kΩ) | ||
| working voltage | direct-current | 12V～16.8V |
| exchange | 220V | |
| power consumption | ≤15W | |
| External dimensions | 365×330×180mm3 | |
| quality | 5kg (including testing pliers and testing wire) | |
Note:
1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. If there is any act of theft or copying, legal responsibility will be pursued.
2. To learn more about Huatian products, please enter the product center. Service Hotline: 400-8855-448
Product FeaturesProduct Characteristics
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1. Fast testing speed: The maximum output charging current of the DC low resistance tester can reach 2A. During measurement, it can effectively compensate for the current inertia of large inductive devices, accelerate iron core saturation, shorten charging time, and improve testing speed. It is hundreds of times faster than traditional instruments such as single and double arm bridge
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2. High accuracy: In addition to using advanced four terminal measurement method, the DC low resistance tester also adopts advanced constant current power supply technology to maintain a relatively stable charging current for inductive loads, with stable anti inductance and strong anti-interference ability, thereby ensuring measurement accuracy. And using high-quality imported components from abroad, the measurement results have high accuracy and good repeatability
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3. Wide measurement range: Resistance measurement range is 1 μ Ω～ 20k Ω, with a wide range
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4. Dual use of AC and DC: The DC low resistance tester comes with a rechargeable battery pack, powered by AC and DC, with a portable design that is easy to use and carry
Product videoProduct Video
Product AtlasProduct Picture
Product Attachment Diagram
Instrument host
TEST
TEST
power line
ground wire
fuse
Instruction manual, inspection report, certificate of conformity
Product detail diagram
Host appearance
control panel
Resistance display
Temperature/current display
grounding
Resistance range selection key
Temperature/current selection
power switch
Start stop button
Work status indicator light
Test line socket
Production process diagram
On site production drawing 1
On site production drawing 2
On site production drawing 3
On site production drawing 4
product certificateProduct Certificate
Our company's products are strictly produced in accordance with international and national standards and industry regulations. They have passed the testing of national, provincial, and municipal power research institutes, measurement centers, and authoritative power departments, and have fully passed the ISO9001 international quality management system certification, the People's Republic of China manufacturing measuring instrument license, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, and GB/T45001-2020 occupational health and safety management system requirements.
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