If not in early detection and location of partial discharge, may be dangerous for users and lead to costly equipment damage.The air gap discharge by discharge and surfaceIs the most likely result in equipment damage or produceArc flashThe partial discharge type.Just likeAcoustic imagingThrough sound detection of compressed air and gas leakage, can also be through acoustic imaging detection of partial discharge.
The voice of the partial discharge frequency in the ultrasonic frequency range.High sensitive acoustic imager (e.g.,雷竞技appBureau of Fluke ii910 ultrasonic imaging) can detect and accurate location of partial discharge.Ii910 will sound figure in visible light image above cover, so that to find the location of the partial discharge becomes very simple.
To find the location of partial discharge
In general, the partial discharge in high voltage and the various types of defects lead to electrical stress insulation failure finally.Air gap discharge is the result of the insulation gas gap is punctured, the surface by discharge is due to the pollution of insulator, and on the outside of the insulator.The discharge may occur in the high voltage equipment (such as transmission system or distribution system) or high voltage electric machine (such as generator or motor).
Due to the partial discharge will damage the equipment as time goes on, it's often difficult to determine the severity of the damage.use雷竞技appBureau of Fluke ii910 ultrasonic imagingConduct regular check, can quickly and easily for the initial testing and monitoring.Just scanning equipment, then find the potential problems.Focuses on the system of the join point might help, because these points are the most common location of partial discharge.
use雷竞技appFluke ii910Acoustic imaging, don't need to have experience or partial discharge detection.
Usi雷竞技appng a Fluke ii910 for partial discharge detection
Step 1: boot.Press and hold the 雷竞技apppower button for at least 2 seconds, then open the Fluke ii910 bureau of ultrasonic imaging.
Step 2: look at the menu.To see the tools menu, click on the screen with your fingers, please.(click anywhere outside the menu on the screen can be hidden menu.)
Step 3: capture mode.Click on the "capture mode" icon, and then to choose.
- Select images, video or PDQ mode.
Step 4: create a folder.Using folders organize files.New files are saved to the screen capture folder name as shown on the corresponding folder.You can select the folder name or timestamp to check the file.
- Click on the folder name at the bottom of the screen.(folder name list will pop up, including "create folder" option.
- Using the keyboard input the new file name.
Step 5: on the imager.The ideal distance of 1 to 8 meters (3 to 26 feet).Good view, can achieve a longer distance - the farthest to 21 meters (70 feet).
Step 6: sound wave spectrum.Use the default frequency as a starting point.
Step 7: testing and capture.No matter adopt what kind of image capture mode, procedure is simple.Aim the audio-visual apparatus target area.When the target area clearly shows that sound, according to "capture" button.
- Image mode.According to "capture" button to save a static picture.After save the image, the screen will display a small image (thumbnail).
- Click on the icon image can explain to add images, photographs, or tag.(can also be done after the event.
- (note: the image model can capture with overlapping audio-visual static scene photos, and save it for the PNG or JPG format.)
- Video mode.According to "capture" button to start recording.
- According to "capture" button again to stop recording and save the video.(can also be done after the event.
- By clicking on the "video" icon, can be added to the video, the video or tag.
- PDQ mode.To ensure sound in shown in circular region.
- According to "capture" button to start recording.Audio-visual apparatus automatically capture data about 1.5 s.
Step 8: file transfer.Will use the attached USB cable雷竞技appFluke ii910To connect to PC.(PC will add a U disk drive list.)
- Open a new usb to see the saved image or video file.
- The required files are copied to the PC of the turf.
- Transfer is completed, remove the usb from the PC.
Step 9: turn it off.Press the power button at a time.On the screen, click the "ok".
Partial discharge report
After all the images and video transmission to the PC,雷竞技appBureau of Fluke ii910 ultrasonic imagingOnline report builder allows you to within a few minutes to create a comprehensive report.You can share with the responsible manager or other maintenance technicians these reports.In addition, after the problem solving, can refer to these reports to verify its effect.
