Xi'an Xu&Hui Electromechanical Technology Co., Ltd.
| Minimum test length | 10m |
| Payment Terms | T/T |
| Supply Ability | 3000unit/year |
| Delivery Time | 5-8 work days |
| Packaging Details | wooden packaging |
| Resolution | 0.1m |
| Screen Size | 7 inch |
| Brand Name | XZH TEST |
| Model Number | XHGG501X |
| Certification | ISO |
| Place of Origin | Xi'an ShanXi |
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Product Specification
| Minimum test length | 10m | Payment Terms | T/T |
| Supply Ability | 3000unit/year | Delivery Time | 5-8 work days |
| Packaging Details | wooden packaging | Resolution | 0.1m |
| Screen Size | 7 inch | Brand Name | XZH TEST |
| Model Number | XHGG501X | Certification | ISO |
| Place of Origin | Xi'an ShanXi | ||
| High Light | Smart Cable Fault Locator ，TDR Cable Tester ，0.1m Resolution Fault Distance Tester | ||
This cable fault tester realizes ABC three-phase cable sampling separately, and the sampling waveform is displayed on the screen at the same time, so that the waveform of the three-phase cable can be compared. The instrument has the functions of adaptive output pulse sampling speed and automatic waveform analysis, and the application is simple.
Product characteristics
| Maximum test length | not less than 50km |
| Sampling speed | 10MHz, 20MHz, 50MHz, 100MHz, 200MHz |
| Pulse width | 1us, 0.75us, 0.5us, 0.2us, 0.1us |
| Pulse amplitude | 400V |
Distance testing capabilityWorking principle
Cable fault tester adopts traveling wave method test principle:
1. Traveling wave method: When the radio wave is transmitted in the transmission line, if the transmission line is not uniform, that is, the characteristic impedance of a point in the transmission line changes, when the radio wave is transmitted to the point, in addition to continuing to transmit to the load, it will also produce reverse transmission and return to the test end, we call the reverse transmission of the wave reflected wave, the phenomenon of the wave producing reverse transmission is called the reflection phenomenon of the wave. The so-called traveling wave refers to the general name of incident wave and reflected wave.
2, when the radio wave is transmitted in the transmission line, the polarity of the echo at the short circuit point is opposite to the polarity of the emitted pulse, and the polarity of the echo at the break point (including the cable terminal) is the same as the polarity of the emitted pulse. Using the pulse method, the instrument can easily determine the distance between the fault point and the test end according to the polarity of the echo.
3. The cable fault tester applies a low-voltage pulse signal to the cable under test, and the pulse signal generates a reflected signal through the fault point of the cable. The cable fault tester processes the reflected signal and presents a waveform diagram. The coarse fault distance of the cable under test is determined by analyzing the reflected waveform.
The wiring method is as follows: Use a single Q line to connect the "sampling interface" of the cable fault tester to the faulty phase line and cable shielding layer. The low voltage pulse wiring is shown in the figure below.
Note: During the test, it must be confirmed that there is no electricity stored in the cable body.
Step 1: Clamp the signal line to test phase A. The test phase selection of the corresponding interface is also set to phase A. Then click the sample/keep button on the interface to enter the sampling state. Observe the sampling waveform. If you think the sampling waveform is good, click the sample/keep button to enter the hold state for waveform analysis. Refer to "Waveform" Example -Analyze waveforms.
Step 2: Clamp the signal line to test phase B. Repeat the first step of the testing process.
Step 3: Clamp the signal line to test phase C. Repeat the first step of the testing process.
After the above three-step test is completed, the interface displays the pulse test waveforms of the three-phase cable at the same time.
Company Details
Business Type:
Manufacturer
Year Established:
2013
Total Annual:
1000000-5000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Xi'an Xu&Hui Electromechanical Technology Co., Ltd. /Xian XZH Electric Power Technology Co., Ltd. Has found in 2013, located in Xi'an, China. which is a highly experienced team dedicated to developing electrical... Xi'an Xu&Hui Electromechanical Technology Co., Ltd. /Xian XZH Electric Power Technology Co., Ltd. Has found in 2013, located in Xi'an, China. which is a highly experienced team dedicated to developing electrical...
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