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 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
