The digital partial discharge detector is a new generation of high-performance digital partial discharge measurement and analysis instrument realized by a new technology, and is a substitute for the traditional analog partial discharge instrument. Its various original anti-interference technologies enable you to make accurate measurements in strong interference environments; friendly user interface and high-speed sampling refresh rate have the visual effects of analog partial discharge instruments; provided a variety of waveform analysis and recording methods You can easily judge the nature of the discharge; automatic recording and processing of various test data can quickly generate test reports with pictures and texts; using dual-channel embedded system, TFT touch screen, the system is stable and reliable, and the failure rate is low. The system comprehensively uses computer technology, analog electronic technology, high-speed signal acquisition technology and advanced digital signal processing and graphic display technology to complete the automatic measurement and analysis of partial discharge.
The partial discharge instrument adopts the WINDOWS series operating platform, which can freely choose ellipse, straight line, sine wave display, two-dimensional, three-dimensional graphic analysis mode, spectrum window, QVF three-dimensional characteristic window, and can statically measure the partial discharge pulse of the one-wave test voltage in detail, observe and analyze. Digital windowing operation can be performed, any phase windowing can be performed, single window or double window can be selected, and the ellipse can be rotated 360° to avoid the influence of interference on the measurement. Multi-channel measurement and digital differential technology can flexibly form pulse polarity identification or balance measurement loops to effectively suppress interfering pulse signals. Advanced spectrum analysis processing can effectively reduce background interference. With multiple input channels, it can boost and measure the six PD signals of the test product at one time (expandable), which can easily analyze the source of the PD signals. Under the full Chinese character operating platform, frequency band selection, gain conversion, spectrum analysis and two-dimensional and three-dimensional graphic display can be easily performed. In addition, the system can also print or save a single graph, and save the graph data of continuous time for analysis.
ITEM | |
Channel | 2 electrical signal interfaces, one external synchronization interface |
Sampling accuracy | 12bit |
Range switching | 60dB、50dB、40dB、30dB、20dB、10dB、0dB、-10dB共8档 |
Frequency range | 80k-200kHz、40k-300kHz |
Nonlinear error of this range | 5% |
Measuring Range | 0.1pC~100000pC |
Sensitivity | 0.1pC |
Capacitance range | 6pF~250µF |
Testing power supply frequency range | 50~400Hz |
Display | |
Display | 7” TFT Touch screen |
Resolution | 800×480 |
Storage | |
Physical storage | 256MB DDR2 for running memory |
SD card storage | Standard 16G card, can be upgraded to 32G, used to store test records and test data |
Port | |
RS232 | Used for synchronous transmission interface with PC |
USB | External mouse and keyboard, and external mobile storage device |
Power supply | AC 220V |
Electrical signal port | 2-channels BNC interface for signal input |
SMAport | External synchronization interface |
SD card slot | Can insert SD card up to 32G |
Internet access | Extensible |
Grounding Button | Used for grounding |
General instructions | |
CPU | Basic frequency 533MHz |
System | WINCE6.0 |
Environment temperature | -20℃ to 45℃ |
Storage environment temperature | -20℃ to 60℃ |
Volume | 350mm × 245mm × 175mm |
Weight | 5.8kg |
