Product Description
ZX-BRY01 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. HTBX-H
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.
Products features
1.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:
a.conformance is very good
b.conformance is good
c.conformance is bad
d.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:
a.normal
b.slight deformation
c.moderate deformation
d.serious deformation
13.Automatically generating Word document,convenient for customers
to save and print.
Products parameters
| 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 | 99.5% |
| Instrument dimension | 300×340×120mm3 |
| Case dimension | 310×400×330mm3 |
| Weight | 10kg |
