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QYJFD-8A Partial Discharge Ultrasonic Positioning System
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QYJFD-8A Partial Discharge Ultrasonic Positioning System
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Product description

This system integrates a high-performance computer, a high-sensitivity partial discharge sound measuring probe, a program-controlled amplification filter, a high-speed A/D converter, transient waveform recording, signal analysis, and fault location calculation software. It is a system for on-site detection, diagnosis and positioning of insulation faults of high-voltage electrical equipment, such as large-scale transformers and oil-filled high-voltage electrical equipment, as well as the collection, analysis and positioning of partial discharge ultrasonic signals in GIS. Discharge on the surface of metal parts and high-voltage coils can quickly identify the location of the fault.

Product Features

1. Eight-channel ultrasonic real-time monitoring to meet the needs of all users

2. Judge the nature and location of the discharge according to the ultrasonic characteristics of the discharge, with high accuracy

3. Electroacoustic and acoustic knot positioning algorithm, efficient and reliable positioning

4. Ultrasonic positioning accuracy is 5cm, which can detect ultrasonic signals with partial discharge less than 200pC

5. Large dynamic gain, the range is suitable for most samples

6. Perfectly record the whole process events of the test for trend analysis of the equipment status

Product parameter

1. Measurement channel: 8 channels

2. Detection sensitivity: 0.1pC

3. Sensitivity of ultrasonic probe: -65dB

4. Sampling rate: 20-50MHz/channel

5. Sampling length: unlimited depth can be set

6. Synchronization frequency: 40-1000Hz

7. Minimum positioning error: 50mm (laboratory), 200mm (field)

8. Partial amplifier receiving channel amplification bandwidth: 20-300kHz

9. Ultrasonic positioning preamplifier magnification: 5000

10. Ultrasonic positioning preamplifier bandwidth: 20-500kHz

11. Power supply: AC90-260V, 50Hz

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