南澳電氣生產(chǎn)NABX全自動變壓器繞組變形測試儀

產(chǎn)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(yùn)行或者運(yùn)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(chǎn)生的強(qiáng)大電動力作用下，變壓器繞組可能失去穩(wěn)定性，導(dǎo)致局部扭曲、鼓包或移位等永久變形現(xiàn)象，這樣將嚴(yán)重影響變壓器的安全運(yùn)行。按國家電力行業(yè)標(biāo)準(zhǔn)DL/T911－2004采用頻率響應(yīng)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(yīng)特性，并對檢測結(jié)果進(jìn)行縱向或橫向比較，根據(jù)幅頻響應(yīng)特性的變化程度，判斷變壓器繞組可能發(fā)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(wǎng)絡(luò)與筆記本電腦連接。

產(chǎn)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(chǎn)品特性

1.不對變壓器進(jìn)行吊罩、拆裝的情況下就可以進(jìn)行測試。

2.使用目前最為流行的掃頻法進(jìn)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(jìn)行測量。

4.采用分體式結(jié)構(gòu)，測試主機(jī)與主控計(jì)算機(jī)之間采用USB或網(wǎng)絡(luò)連接，即插即用。

5.現(xiàn)場接線簡單、使用方便。

6.測量動態(tài)范圍寬：－100dB～20dB。

7.分析軟件功能強(qiáng)大，軟件、硬件指標(biāo)滿足國標(biāo)DL/T911-2004。

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

9.采用數(shù)據(jù)庫保存測試數(shù)據(jù)，對測試數(shù)據(jù)的管理簡潔方便。

10.可以同時加載6條曲線，各條曲線相關(guān)參數(shù)自動計(jì)算，自動診斷繞組的變形情況，給出診斷的參考結(jié)論。

11.軟件管理功能強(qiáng)大，充分考慮現(xiàn)場使用的需要，自動保存環(huán)境條件參數(shù)，以便作變壓器繞組變形診斷時提供依據(jù)。測量數(shù)據(jù)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(diǎn)明顯，測量的各種條件多為選擇項(xiàng)，不用在現(xiàn)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(chǎn)品參數(shù)

1.測試主機(jī)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(biāo)準(zhǔn)正弦波，信號輸出幅度可以軟件調(diào)節(jié)，最大幅度Vpp10V，信號輸出阻抗為50Ω。

3.兩個采集通道，一個采集激勵信號，一個采集響應(yīng)信號，用于計(jì)算傳遞函數(shù)。

4.采集通道量化精度：12位。

5.采集通道最大靜態(tài)誤差：0.5%。

6.每通道最大存儲容量：64K樣點(diǎn)。

7.采集通道輸入阻抗：1MΩ。

8.掃頻測量范圍：0.5kHz－2MHz。

9.掃描方式：采用線形分布或?qū)?shù)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(diǎn)：固定模式或用戶自定義。

12.符合國家電力行業(yè)標(biāo)準(zhǔn)：DL/T911-2004。

Product introduction

NABX transformer winding deformation tester based on transformer internal winding characteristic parameters measurement, adopting the developed countries internal fault frequency response analysis (FRA) method, able to make accurate judgments on the transformer internal fault. once the transformer is manufactured, its coil and the internal structure 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 , the corresponding parameter of each coil (Ci, Li) should is determined. Thus each coil resulting frequency domain response is determined , which corresponds to the frequency spectrum between the three-phase coils having a comparable. Transformer turns occurs during the test , the interphase short circuit or a collision during transport , resulting in the relative displacement of the coil , and the short-circuit during operation and the fault condition causing the coil deformation due to the electromagnetic force , will make the distribution parameters of the transformer windings change. Thereby affecting and changing transformers original frequency domain characteristics, namely the frequency response and resonant amplitude variations occurring frequency offset and so on. And according to the response analysis method developed NA201 transformer winding frequency response tester, is such a novel transformer internal fault nondestructive testing equipment. It is suitable for 63kV ~ 500kV power transformer internal structure fault detection. Transformer winding deformation tester is inside the transformer winding parameters at different frequency domain response changes were quantified after treatment , according to the magnitude of the changes the size , frequency response magnitude of change , regional and response trends to determine internal transformer 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 deformation meter, transformer winding deformation 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, can accurately diagnosed the winding distorted, 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 features two techniques compatible with the current domestic geNAe measurement mode

11 , the amplitude-frequency characteristics meet the national tester technical indicators standard. Abscissa ( frequency ) with linear and logarithmic indexing, 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, the results as follows: ①perfect consistency,②good consistency , ③ordinary  consistency, ④ poor consistency. Vertical comparison, A-A, B-B, C-C obtain the original data and the current data phase to phase winding deformation comparison between, the results as follows: ①normal winding deformation, ②mild winding deformation, ③moderate winding deformation, 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 Frequency Response Analysis" technical conditions .

The parameters of the products

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

(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