MSJF-3001BUltrasonic partial discharge tester
This method utilizes ultra-high frequency (UHF) ground waves and ultrasonic waves to detect partial discharge. By using an external UHF sensor to receive the UHF and ultrasonic signals radiated and generated by partial discharge inside the GIS equipment, it can effectively detect whether there is discharge inside the equipment.
This new type of partial discharge detector is primarily used to detect partial discharge in switchgear, transformers, cables, GIS, overhead lines, etc., under operating conditions.
It integrates a built-in ultrasonic and ground wave two-in-one sensor within the main unit, allowing for partial discharge detection of switchgear without the need for external sensors.
It features non-invasive detection, requiring no power outage during the detection process, simple operation, and multi-purpose functionality.
1. Configurable with different sensors to achieve partial discharge detection for almost all high-voltage electrical equipment;
2. Provides various discharge patterns such as time-domain waveforms, PRPD, and PRPS for the analysis of different discharge types;
3. User-friendly human-machine interface for convenient data management of different equipment;
4. Built-in ultrasonic sensor and transient earth voltage (TEV) sensor; can be connected to dedicated sensors for transformers, GIS, overhead lines, cables, etc.;
5. Uses a non-invasive detection method; no power outage is required during the test, and no additional high-voltage source is needed, making it more convenient to use than traditional pulse-type partial discharge detectors;
6. Test bandwidth range is 30kHz-2.0GHz. What are the detection principles for various frequency bands
1. Ground Wave Parameters:
① Measurement Range: 0-60 dBmV
② Resolution: 1 dB
③ Accuracy: ±1 dB
④ Maximum Pulses per Cycle: 1400
⑤ Measurement Frequency Band: 3-100 MHz
2. Contact Ultrasonic Parameters:
① Measurement Range: -6 dBμV - 68 dBμV
② Resolution: 1 dB
③ Accuracy: ±1 dB
④ Frequency Range: 20-200 kHz
3. Non-Contact Ultrasonic Parameters:
① Measurement Range: -6 dBμV - 68 dBμV
② Resolution: 1 dB
③ Accuracy: ±1 dB
④ Sensor Center Frequency: 40 kHz
4. UHF Parameters:
① Detection Frequency Band: 300-3000 MHz
② Measurement Range: 0-60 dBmV
5. High-Frequency Current Transformer Parameters:
① Sensor Transfer Impedance: 9.9 mV/mA
② Detection Frequency: 3-30 MHz
Other Features:
1. Sensitivity: 1 mV
2. Detection Range: 0-10000 mV
3. Hardware
4. Casing: ABS
5. Display: 4.0-inch RGB LCD screen, Resolution 800*480
6. Sampling Accuracy: 12-bit
7. Synchronization Method: Internal synchronization, External synchronization
8. Connector: USB interface (also for charging)
9. 3.5mm stereo headphone jack
10. External sensor input interface
11. Wireless Wi-Fi (optional)
12. Headphones: Minimum 8 ohms
13. SD Card: Standard 16G - 64G
14. Built-in Battery: 3.7V 5000mAh lithium battery
15. Operating Time: Approximately 6 hours
16. Charger: AC 90-264V or DC 5V
17. Operating temperature: -20 - 50℃
18. Humidity: 20-85% relative humidity
19. Dimensions and weight: 210*100*35 (mm), 0.4 KG (main unit)