China Sweep Frequency Response Analyzer Transformer Winding Deformation Tester, Find details about China Transformer Winding Deformation Tester, Sweep Frequency Response from Sweep Frequency Response Analyzer Transformer Winding Deformation Tester
based on the measurement of the windings characteristic parameters inside the transformer, the tester using the world's developed countries sound internal fault frequency response analysis (FRA) method, able to make an accurate internal transformer fault judgment.
After the completion of the design and manufacture transformers, coils and its internal structure to be finalized, therefore a transformer coil winding, if the voltage level, method of winding are the same, each coil corresponding parameters (Ci, Li) is determined. Thus the frequency domain response characteristics of each coil also will determine, among the corresponding three-phase coil has a comparable frequency spectrum.
It occurs inter-turn, phase short circuit during the test or collision during transport, causing the coil relative displacement, and during operation under short circuit and fault conditions due to the tension caused by the electromagnetic, coil is deformed, it will make the distribution parameters of the transformer windings changes. Thus influent and change the existing frequency domain transformer frequency response feature, that frequency response amplitude changes occur and resonance frequency shift, etc. WXBR-V applies to the internal structure of fault detection 63kV ~ 500kV power transformers.
FRA quantization process transformer internal winding parameters response changes in the different frequency domain, according to the value of the change magnitude, frequency response magnitude change, regional and response trends, to judge the transformer internal windings degree of change, in turn, can determine whether the transformer has been severely damaged, need to overhaul measurement.
For the running transformer, regardless of whether there is a saved frequency domain feature picture in the past, by comparison the difference between fingerprints of fault transformer coil can also judge the degree of fault. Of course, if you save a set of transformer windings original characteristic graph easier for the operation of transformers, maintenance and inspection after the accident analysis and provide a strong basis more accurate.
FRA from the laptop and chip microprocessor precision measurement systems, compact, easy to operate, with comprehensive test analysis function.
2. Features1).Use high-speed, high integration microprocessor to sample and control.
2).Use USB to connect the notebook PC and device.
3).Communication wireless Bluetooth interface between the laptop and instruments.
4).Hardware cassette mechanism adopts DDS (from America), can correctly detect the breakdown :distortion, swell, shift, tilt, inter-turn short circuit deformation and contacting short circuit inter-phase.
5).High-speed, dual channel, 16 bit A/D sampling (the wave from curve will change obviously if change the tapping switch during the field tests.).
6).The software can adjust the output signal range, the maximum amplitude peak±10V.
7).The computer automatically generating the test results to be Word document.
8).Use precision, high stability components, the same phase repeat test, measurement repetition rate >99.5%.
9).Finished circuit boards, surface specially treatment with anti-water pollution and harmful gases.
10).The device with two measurement system: linear scan and sectional scan.
11).Amplitude-frequency characteristic comply the national technical specifications.
12).Test data automatic analysis system, horizontal compare the similarity of A,B ,C, the results as below:
(1)conformance is very good
(2)conformance is good
(3)conformance is bad
(4)conformance is very bad
Vertical compare A-A,B-B,C-C, obtain the original data to compare the winding deformation with the test data in the same phase, the results as below:
(1)normal
(2)slight deformation
(3)moderate deformation
(4)serious deformation
13).Automatically generating Word document,convenient for customers to save and print.
3 Parameters
Scan mode
Linear scan distribution | Scan measurement range | (1kHz)-(2MHz), 2000 scan frequency point, resolution:1kHz |
Sectional scan measurement distribution | Scan measurement range | (0.5kHz)~(1MHz), 2000 scan frequency point |
(0.5kHz)~(10kHz) | ||
(10kHz)~(100kHz) | ||
(100kHz)~(500kHz) | ||
(500kHz)~(1000kHz) |
Other parameters
Amplitude measurement range | (-100dB)~(+20dB) |
Amplitude measurement accuracy | 0.1dB |
Scan frequency accuracy | <0.01% |
Signal input impedance | 1MΩ |
Signal output impedance | 50Ω |
Co-phase repetitive rate | 99.50% |
Instrument dimension | 300×340×120mm3 |
Case dimension | 310×400×330mm3 |
Weight | 10kg |
II.Company Profile:
Wuhan WG Hipot Electric Tester Co.,Ltd. (hereafter referred to as WG Hipot) is the professional factory of high voltage testing equipment with over 15 years industry experience.
ISO Certified factory, qualified R&D and after-sales Engineer team, 3000 square meters workshop, our high voltage testers cover full range: High voltage hipot tester, Circuit breaker Switchgear Tester, Transformer tester, Relay Protection Tester, CT/PT Tester, MOA/Insulator Tester, SF6/Insulation Oil Test Equipment, Resistance Tester, etc.
Since 2003, with the support from our investors Wuhan High Voltage Institution and Xi'an High Voltage Institution, WG Hipot established and pioneered in high voltage testing field in domestic market as the designated supplier for State Grid and mainstream power companies.
Meantime, WG Hipot has developed overseas markets across 5 continents worldwide. We gained good feedback from our customers with our high performance, good quality, customized specification and easy-to-operate high voltage testers, which can be widely used in railway, oil and chemical industry, electricity grid, university, big factory etc.
III.Customer Visit:
IV.Filed Test&Service:
V.Certification:
VI.Package & Shipment:
VII. FAQ
1.When can I get the price?
We usually quote within 6hours after we get your inquiry. If you are vey urgent to get price, please call us or tell us in your email so that we will regard your inquiry priority.
2. What about the leading time for production?
Honestly, it depends on the order quantity and the product. Usually our leading time is within 7 working days after order confirmed.
3. What is your payment terms?
We accept EXW,FOB, CFR, CIF, ect. You can choose the one which is the most convenient and cost effective for you.
4. How much will be the Shipping cost and time?
This will depend on the size of your goods and the method of shipping (by sea/ by air/by Express) and your designated port or airport. We will be grateful if you can spare us some minutes to evaluate the cost based on the information provided.
5. Could you please tell me the Warranty Period of your product?
Our warranty period is one year free and lifelong maintenance. If the product is damaged (if not man-made damage), in the first year,we will send free parts for replacement. Over warranty, maintenance is paid service.
6. What kind of Certificate can you provide?
We can provide the CE mark, ISO 9001 quality certificate, third party calibration certificate(CNAS) and factory test report.
7. Do you have Technical Backup to all customers from different countries?
To be sure,our technical support is always available and quick response.
We are manufacturer with much on-site testing experience, thus we know how to deal with your problems. Moreover, our engineers can go to your country to support if need.