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Digital PD Detector Partial Discharge Testing
Digital PD Detector Partial Discharge Testing Product Overview
The transformer partial discharge detection device and the sensorwith the software using advanced signal processing technology covering a wide range of statistical methods and graphical display mode and coming with highenergy lithium batteries can flexibly achieve the detection of transformer partial discharge signals and ultrasonic signals capable of full range of detection for the transformer's partial discharge.
Partial discharge detection location detect the partial discharge changes in the transformer's internal during the operation by examining the partial discharge conditions of the device to analyze the insulating state of the transformer.
High frequency current transformers (pulsed current method) an ultrasonic sensor (ultrasonic method).
Through a variety of means to suppress various external noise interference it improved signal to noise ratio and the measurement accuracy.
product features Product Characteristics
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Digital PD Detector Partial Discharge Testing Working Condition
Altitude ≤3000m Environmental Temperature -20~60°C Relative Humidity ≤95%
Digital PD Detector Partial Discharge Testing Host Performance Indicators
Number of channels: 4 independent measurement channels (scalable) and 1 external trigger input channel.
Sampling rate: 200MSa / s
Sampling accuracy: 12bit
Host Screen size: 6.5 inches
Operation: mouse keyboard touch screen
Host interface: 2 USB ports 1 Ethernet port 1 VGA port.
Synchronous Frequency range: 30Hz ~ 1MHz
Power Mode: Built-in lithium battery or external AC power supply (AC220V 50Hz)
Measurement content: Discharge magnitude (Q) the discharge phase (?) the discharge density (N)
Data processing sampling period: ≤1μs
PD signal statistical analysis:
1 two-dimensional (Q-T; N-T; ?-Q; ?-N) map
2 three-dimensional (?-Q-T ?-N-T) Atlas
3 amplitude-time a relationshipmagnitude-phase relationship number of discharges-phase relationship
Charging power supply: AC220V; 50Hz frequency
System design life: more than 10 years
Digital PD Detector Partial Discharge Testing Sensor Parameters
| Sensitivity | Measuring Band | Center Frequency | measuring range | |
| High Frequency Current Transformer | 10pC | 20kHz-30MHz | -- |
10pC-100nC |
| Ultrasonic Sensor | -60dB | -- | 40kHz |
-60dB-0 dB |
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