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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. Sweep voltage output: ±10V (P-P=20V)
7. Same-phase test repeatability: 99.9%
8. Measuring instrument dimensions (L x W x H): 300X340X120 (mm)
9. Instrument aluminum alloy case dimensions (L x W x H): 310X400X330 (mm)
10. Total weight: 10Kg
Product Overview:
Based on the measurement of internal winding characteristic parameters of transformers, the internal fault frequency response analysis (FRA) method, which is being developed and perfected in developed countries around the world, can accurately judge internal faults in transformers.
Technical Features:
1. Acquisition control adopts high-speed, highly integrated microprocessor.
2. Communication between laptop and instrument via USB interface.
3. Communication between laptop and instrument via wireless Bluetooth interface (optional accessory).
4. The hardware core uses DDS dedicated digital high-speed sweep frequency technology (USA). Through testing, faults such as winding distortion, bulging, displacement, tilting, inter-turn short circuit deformation, and phase-to-phase contact short circuit can be accurately diagnosed.
5. High-speed dual-channel 16-bit A/D sampling (field test changing tap changer, waveform curve has obvious changes).
6. Signal output amplitude is software adjustable, maximum amplitude peak ±10V.
7. The computer automatically analyzes the test results and generates electronic documents (Word).
8. The instrument has dual measurement system functions of linear sweep measurement and segmented sweep measurement, compatible with the measurement modes of the two current domestic technical schools.
9. The amplitude-frequency characteristics comply with the national technical indicators for amplitude-frequency characteristic testers. The horizontal axis (frequency) has both linear and logarithmic scales, so the printed curve can be either linear or logarithmic, depending on the user's actual needs.
10. Automatic analysis system for test data,
Horizontal comparison: compare winding similarity among phases A, B, and C,
The analysis results are:
① Very good consistency
② Good consistency
③ Poor consistency
④ Very poor consistency,
Longitudinal comparison: retrieve original data and compare with current data for the same phase (A-A, B-B, C-C) to compare winding deformation,
The analysis results are:
① Normal winding
② Slight deformation
③ Moderate deformation
④ Severe deformation
11. Can automatically generate Word electronic documents for saving and printing.
12. Fully meets the technical conditions of the electric power standard DL/T911-2004 "Frequency Response Analysis Method for Deformation of Power Transformer Windings".
Technical Parameters:
1. Sweep mode:
1. Linear sweep distribution
Sweep measurement range: (10Hz)-(10MHz), 40000 sweep points, resolution of 0.25kHz, 0.5kHz, and 1kHz
2. Segmented sweep measurement distribution
Sweep measurement range: (0.5kHz)-(1MHz), 2000 sweep points;
(0.5kHz)-(10kHz)
(10kHz)-(100kHz)
(100kHz)-(500kHz)
(500kHz)-(1000kHz)
Keywords: Transformer Winding Deformation Tester/Detector, Transformer Winding Deformation Tester/Detector
