產品簡介

NABX全自動變壓器繞組變形測試儀（頻響法）用于測試6kV及以上電壓等級電力變壓器及其它特殊用途的變壓器，電力變壓器在運行或者運輸過程中不可避免地要遭受各種故障短路電流的沖擊或者物理撞擊，在短路電流產生的強大電動力作用下，變壓器繞組可能失去穩定性，導致局部扭曲、鼓包或移位等**變形現象，這樣將嚴重影響變壓器的安全運行。按國家電力行業標準DL/T911－2004采用頻率響應分析法測量變壓器的繞組變形，是通過檢測變壓器各個繞組的幅頻響應特性，并對檢測結果進行縱向或橫向比較，根據幅頻響應特性的變化程度，判斷變壓器繞組可能發生的變形情況。

NABX變壓器繞組變形測試儀（頻響法）由測量部分及分析軟件部分組成，測量部分是由信號生成及信號測量組成的黑匣子，分析部分由筆記本電腦完成，測量部分通過USB或網絡與筆記本電腦連接。

產品別名

電力變壓器繞組變形測試儀、變壓器繞組變形檢測儀、變壓器繞組變形測量儀、變壓器繞組變形分析儀

產品特性

1.不對變壓器進行吊罩、拆裝的情況下就可以進行測試。

2.使用目前最為流行的掃頻法進行測量。

3.NABX變壓器繞組變形測試儀可以對6kV以上的變壓器進行測量。

4.采用分體式結構，測試主機與主控計算機之間采用USB或網絡連接，即插即用。

5.現場接線簡單、使用方便。

6.測量動態范圍寬：－100dB～20dB。

7.分析軟件功能強大，軟件、硬件指標滿足國標DL/T911-2004。

8.采用windows平臺，兼容Window 2000/Window XP/Windows7。

9.采用數據庫保存測試數據，對測試數據的管理簡潔方便。

10.可以同時加載6條曲線，各條曲線相關參數自動計算，自動診斷繞組的變形情況，給出診斷的參考結論。

11.軟件管理功能強大，充分考慮現場使用的需要，自動保存環境條件參數，以便作變壓器繞組變形診斷時提供依據。測量數據自動存盤、具有彩色打印功能，方便用戶出測試報告。

12.軟件人性化特點明顯，測量的各種條件多為選擇項，不用在現場作很多的輸入，使用人員更加的方便。

13.軟件智能化程度高，在輸入、輸出信號連接好之后，只需要按一個鍵就可以完成所有的測量工作。

14.軟件界面簡潔直觀。

產品參數

1.測試主機與PC接口：USB。

2.信號源：儀器自帶一個通道信號輸出作為掃頻的激勵信號；信號輸出為標準正弦波，信號輸出幅度可以軟件調節，**幅度Vpp10V，信號輸出阻抗為50Ω。

3.兩個***通道，一個***激勵信號，一個***響應信號，用于計算傳遞函數。

4.***通道量化精度：12位。

5.***通道**靜態誤差：0.5%。

6.每通道**存儲容量：64K樣點。

7.***通道輸入阻抗：1MΩ。

8.掃頻測量范圍：0.5kHz－2MHz。

9.掃描方式：采用線形分布或對數分布的掃頻測量方式。

10.掃描頻率精度：信號源輸出正弦信號的頻率精度不大于0.01%。

11.掃頻測量頻點：固定模式或用戶自定義。

12.符合國家電力行業標準：DL/T911-2004。

Product introduction

NABX transformer winding deformation tester based on transformer internal winding characteristic parameters measurement, adoptingthedevelopedcountries internal fault frequency response analysis (FRA) method, able to make accurate judgments on the transformer internal fault. Once the transformer is manufactured, its coil andtheinternalstructure is stabilized, therefore to a multi- winding transformer coil, if the voltage level is same, with the same windling method, around the system in the same way , thecorrespondingparameter ofeach coil (Ci, Li) should is determined. Thus each coil resulting frequency domain response is determined , which corresponds to the frequency spectrum between thethree-phase coilshaving acomparable. Transformer turns occurs during the test , the interphase short circuit or a collision during transport , resulting in the relative displacement of the coil ,and theshort-circuit duringoperation and the fault condition causing the coil deformation due to the electromagnetic force , will make the distribution parameters of the transformer windingschange.Thereby affecting andchanging transformers original frequency domain characteristics, namely the frequency response and resonant amplitude variations occurring frequency offset and so on.Andaccording to the responseanalysis method developed NA201?transformer winding frequency response tester, is such a novel transformer internal fault nondestructive testing equipment. Itissuitable for 63kV ~ 500kV powertransformer internal structure fault detection. Transformer winding deformation tester is inside the transformer winding parameters at different frequencydomainresponse changes were quantified aftertreatment , according to the magnitude of the changes the size , frequency response magnitude of change , regional and response trends to determineinternaltransformer winding the degree of change ,in turn, can according to the measurement results to determine whether the transformer has been seriously damaged , the need for a major overhaul.

Also called name

Power transformer winding deformation tester, transformer winding deformation tester, transformer winding deformationmeter,transformer windingdeformation analyzer

The Characteristics of the products

1, Collection control adopt high-speed , highly integrated microprocessor.

2 , Notebook with USB interface for communication between the instrument

laptops and USB interface for communication between instruments .

3, there is communication wireless blue-tooth interface between laptop computer and instruments .

4 , the hardware chipset adopt DDS dedicated digital high-speed sweeping technology ( USA ) , though the testing, canaccuratelydiagnosed the windingdistorted, drum kits, shift, tilt, deformation of inter-turn short circuit and phase to phase short circuit fault.

5 ,high resolution dB value measurement, dual-channel 16-bit A / D ( on-site test change the tap , means obvious output change ) .

6 , the signal output amplitude can be adjusted by software, the maximum amplitude peak ±10V.

7 , the computer generates an electronic document testing results (Word)

8, choose precision, high stability components, to the same-phase repeated testing, the measurement repetition rate to 99.5%.

9, the finished circuit board ,with a special process on the surface, with water-proof and anti-harmful gas functions .

10 , the instrument has a linear frequency sweep measurements and segmented sweep measurement dual measurement system featurestwotechniquescompatible with the current domestic geNAe measurement mode

11 , the amplitude-frequency characteristics meet the national tester technical indicators standard. Abscissa ( frequency ) withlinearand logarithmicindexing, so the printed curve can be linear pitch curve points, also can be a logarithmic curve, the user can choose according to actual needs .

12, automatic detection of data analysis system, horizontal comparison A, B, C three-phase windings similarity comparison, theresultsas follows:①perfect consistency,②good consistency ,③ordinary ?consistency,④poorconsistency.Vertical comparison, A-A, B-B, C-C obtain the original data and the current data phase to phase windingdeformation comparison between, the results asfollows:①normalwinding deformation,②mild winding deformation,③moderate windingdeformation,④severe deformation deformation.

13 , automatically generated Word electronic documents, for saving and printing .

14 , the instrument fully meet the electricity standard DL/T911-2004 " power transformer winding deformation FrequencyResponseAnalysis" technicalconditions .

The parameters of the products

1, Scanning mode: (instrument with linear sweep frequency measurement and segmented sweep frequency measurement dualmeasurementsystem)

(1) Distribution of linear sweep

Sweep frequency measurement range: (1kHz) - (2MHz), 2000 sweep frequency points, resolution is 1kHz

(2) Segment sweep frequency measurement distribution

Sweep frequency measurement range: (0.5kHz) - (1MHz), 2000 sweep points;

(0.5kHz) - (10kHz), resolution is 0.02kHz

(10kHz) - (100kHz), resolution is 0.2kHz

(100kHz) - (500kHz), resolution is 1kHz

(500kHz) - (1000kHz), resolution is 1kHz

2, Other technical parameters:

(1) Amplitude Measurement Range: (-100dB) - (+20 dB)

(2) Amplitude Accuracy: 0.1dB

(3) Scanning Frequency accuracy: less than 0.01%

(4) Signal Input impedance: 1MΩ

(5) Signal output impedance: 50Ω

(6) Same phase repetitive rate: 99.5%

(7) Measuring Instruments Dimensions (LWH) 345X250X120 (mm)

(8) Instrument aluminum box dimensions (LWH) 425X335X215 (mm)

(9) Instrument Accessories aluminum box dimensions (LWH) 425X335X150 (mm)

(10) Total Weight: 10Kg