Transformer Sweep Frequency Response Winding Deformation Testing Instrument
Transformer winding deformation tester can accurately judge the fault in the transformer, according to test transformer's internal winding characteristics parameters. The testing adopts fault frequency response analysis method(FRA), which has been completely developed and widely used in the world.
Transformer winding deformation tester can accurately judge the fault in the transformer, according to test transformer's internal winding characteristics parameters. The testing adopts fault frequency response analysis method(FRA), which has been completely developed and widely used in the world.
When a transformer is designed and manufactured well, its coil and internal structure have been fixed. Transformer may come interturn short circuit or phase short circuit during the testing, sometimes it's impacted during transportation, which causes coil movement, or coil deformation caused by electric magnetism pulling under short circuit or fault conditions. All these may make transformer's parameters change, then affect or change transformer's original frequency characteristics. The tester is suitable for 63kV~500kV electrical transformers internal fault detecting.
Main Technical Parameters
1.Scanning mode
(1) Line-type scanning distribution
Sweep frequency measurement range: (10Hz)-(10MHz) 40000 sweep frequency points, resolution: 0.25kHz, 0.5kHz and 1kHz.
(2) Section sweep frequency measurement distribution
Sweep frequency measurement range: (0.5kHz)-(1MHz), 2000 sweep frequency points
(0.5kHz)-(10kHz)
(10kHz)-(100kHz)
(100kHz)-(500kHz)
(500kHz)-(1000kHz)
2. Other technical parameters
(1)Amplitude measurement range: (-120dB) to (+20dB)
(2)Amplitude measurement accuracy: 0.1dB
(3)Sweep frequency accuracy: 0.01%
(4)Signal input impedance: 1MΩ
(5)Signal output impedance: 50Ω
(6)Signal output amplitude: ±20V
(7)In phase testing repetition rate: 99.9%
(8)Host dimension: 300x340x120mm
(9)Aluminum alloy box dimension: 310x400x330mm
(10)Total weight: 10kg
Main Technical Features
1.The collect controlling adopts high speed, high integration microcomputer.
2. Communication via the USB interface.
3. Communication via wireless WIFI interface(optional)
4. The hardware chip adopts DDS digital high speed sweep frequency technology(America), according to the testing, it can accurately diagnose the distortion, bubble, movement, incline, interphase short circuit deformation, inphase contact short circuit and other faults.
5. High speed dual channel 16 digits A/D sampling(on-site testing changes the tap changer, waveform curve will change obviously).
6. Signal output amplitude software adjustment, the max amplitude crest ±10V.
7. The computer will automatically analyze testing results and generate electric files(Word).
8. Detecting datas auto analyzing system
(1)Transverse comparison A, B , C three phase winding similarity, the analyze results:
a. Excellent consistence
b. Good consistence
c. Bad consistence
d. Worst consistence
(2)Vertical comparison A-A, B-B, C-C, recall the original datas and present datas, then compare during inphase, the analyze results:
a. Normal winding
b. Light deformation
c. Moderate deformation
d. Serious deformation
9. Automatically generate word files to reserve or print.
Kiyu Power is a high-tech enterprise professionally engaged in R & D, manufacture and marketing of power testing products, instruments, power industry automation systems for 20 years.We export completed set to Korea, Singapore, Vietnam, India, Ecuador, Paraguay, Pakistan, Philippines, Russia, Italy, Austria, Portugal, Chile such as PD test system, impulse voltage generator, temperature rising test system, transformer comprehensive test system, cable fault detect system and varies of instruments for transformer, circuit breaker, switchgear, lightning arrestor, insulator, cable, battery,SF6 gas and so on.
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