Product Introduction
The UHV-311 Sweep Frequency Response Analyzer is designed to measure the winding characteristic parameters inside transformers. It utilizes the Frequency Response Analysis (FRA) method to accurately diagnose internal transformer faults. The device is applicable for fault detection in power transformers ranging from 63kV to 500kV.

Product Features
1. Utilizes DDS digital high-speed frequency sweeping technology for precise fault diagnosis.
2. Features a highly integrated microprocessor with high-speed dual-channel 16-bit A/D sampling.
3. Supports linear and segmented frequency sweep measurements, compatible with domestic technical standards.
4. Allows testing without disassembling the transformer, reducing labor intensity.
5. Flexible signal input and output lead placement without affecting results.
6. Amplitude-frequency characteristics meet national technical standards, with options for linear or logarithmic division curves.
7. Intelligent software automatically adjusts signal output amplitude and sampling frequency.
8. Offers a variety of frequency linear sweep measurement functions with a sweep frequency up to 1MHz.
9. Provides historical curve comparison and expert intelligent analysis for transformer winding diagnosis.
10. Powerful software management with automatic data analysis, saving, and color printing functions.

Technical Parameters
- Linear sweep frequency measurement range: 1kHz to 1MHz
- Segmented sweep frequency measurement ranges: 0.5kHz to 1kHz, 0.5kHz to 10kHz, 10kHz to 100kHz, 100kHz to 500kHz, 500kHz to 1000kHz
- Amplitude measurement range: -100dB to +20dB
- Amplitude measurement accuracy: ±1dB for +20dB to -60dB, ±2dB for -60dB to -100dB
- Scan frequency accuracy: <0.01%
- Signal input impedance: 1MΩ
- Signal output impedance: 50Ω
- Co-phase repetitive rate: 99.5%
- Instrument dimensions: 300×340×120mm
- Case dimensions: 310×400×330mm
- Weight: 10kg