UHV-H200P high-precision resistance circuit tester

At present, the conventional QJ44 double arm DC bridge is widely used in the power system to measure contact resistance, but the test current of this type of bridge is only m, making it difficult to detect the defect of reduced cross-sectional area of the circuit conductor. When measuring the contact resistance of the conductive circuit of a high-voltage switch, due to the influence of the oil film and oxide layer between the contacts, the measured value is several times larger and cannot truly reflect the contact resistance value. For this purpose, the standard DL/T845.4-2004 "General Technical Conditions for Resistance Measuring Devices: Loop Resistance Testers" and the new version of the verification regulation JJG1052-2009 "Verification Regulation for Loop Resistance Testers and Direct Resistance Testers" of the Ministry of Electric Power stipulate that the measurement current for measuring (isolating) switches, circuit breakers and other contact resistances should not be less than 100A DC, and the minimum current holding time should not be less than 60 seconds, to ensure accurate test results.

UHV-H200P high-precision resistance circuit testerThe operation panel adopts ergonomic design, conforms to operating habits, uses high-frequency switching power supply and digital circuit technology, and is suitable for measuring the circuit resistance of switch control equipment. The test current adopts the national standard recommended DC 100A. The circuit resistance can be directly measured under DC 100A, and the test results are displayed on a large LCD screen with functions such as data storage, output printing, and time setting. There is also a 50A gear for users to choose from; It is a domestic contact resistance tester that can achieve a resolution of 0.01 μ Ω and is very stable, with performance exceeding that of imported high current micro ohmmeters.UHV-H200P high-precision resistance circuit testerMeets the requirements of on-site high-voltage switch maintenance and high-voltage switch factory circuit resistance testing by the power and supply departments.

Product parameters

technical parameters

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. For more information on ultra-high voltage products, please enter the product center.

Product features

1. High current: The automatic circuit resistance tester adopts new power supply technology, which can continuously output high current for a long time, overcoming the drawbacks of instantaneous current of pulse power supply. It can effectively penetrate the oxide film of switch contacts and obtain good test results.

2. High stability: Under severe interference conditions, the LCD screen position data can remain stable within ± 1 word range, with stable readings and good repeatability.

3. High precision: Adopting dual channel high-speed 16 bit ∑ - Δ AD sampling and new digital signal processing technology, with a resolution of 0.01 μ Ω, it is currently the most stable contact resistance tester in China that can achieve a resolution of 0.01 μ Ω, and its performance exceeds that of imported high current micro ohmmeters.

4. Intelligence: Using imported high-performance CPUs, the system automatically switches the measurement range based on the signal size during measurement, ensuring the accuracy of the product's testing. The over temperature protection circuit can automatically stop outputting current when the instrument exceeds the set temperature, ensuring the safe use of the instrument.

5. High quality: All key components are imported, and the cleverly designed temperature compensation circuit effectively eliminates the influence of environmental temperature on measurement results. The use of connectors enhances the anti vibration performance.

6. Function *: The current can be freely selected from 50A, 100A, 150A, and 200A, and the testing time can be selected from fast, 10 seconds, 30 seconds, and 60 seconds, far exceeding the performance of other similar instruments.

7. Human computer interface friendly: touch screen control, convenient and fast, self setting instrument date and time, real-time saving of measurement data, and instant printing of measurement results.

8. USB transfer: Transfer measurement data to a USB drive through a USB interface, and further analyze and process the measurement data in conjunction with the upper computer software.

9. Easy to use: small size, light weight, easy to carry.

Product Video Product Atlas

Product Attachment Diagram

main unit of the instrument

dedicated test line

USB drive

ground wire

power cord

10A insurance tube

printing paper

Product detail images

host

main unit of the instrument

panel

terminal

printer

screen

USB port

power switch

power socket

ground terminal