Ofil manufactures daytime corona cameras with DayCor® technology inside. Ofil's cameras are non-destructive and non-intrusive bi-spectral UV-Visible with high sensitivity to UV spectral range. Ofil's cameras detect corona and pinpoint the emitting sources. Used worldwide by thousands of predictive maintenance teams.dOfil manufactures daytime corona cameras with bispectral UV-Visible sensors that detect corona and its emmiting sources.

1. Ofil’s Daytime Corona Cameras

3. Economic

4. Routinecorona cannot be seen during daytime

6. Corona is caused by ionization of gas, where electrons that have gained energy from the local e-field revert to their original state and release light/energy mostlyin the UV range

7. A critical value of e-field (~24Kv/Cm) is needed to induce the local corona discharge

10. Corona camera for daytime Principle: Bi-Spectral UV-Visible Input: UV radiation – unseen by human eye + Visible view of the background Output Visible representation of the unseen UV overlaid on the background

11. The spectrum: UVc is in the solar blind UV IR 120 C B A 10 100 8 80 Solar Radiation (µW/cm2/nm ) 6 Filter Transmission (%) 60 4 40 2 20 200 300 400 500 600 700 800 900 1000 Wave length (nm) visible range corona

12. Bi Spectral imaging 250 kV Combined mode Visible mode UV mode

13. Examples - Transmission Transmission - BN

14. Examples - distribution Pinpoint corona sources 13.4kV

15. Examples - substation

16. Examples - switchgear

17. Examples - motors

19. Remote sensing

20. Detect Corona and UV events

21. Locate and pinpoint Corona

22. Measure UV events

23. Record each corona source

25. Hand held for on foot patrol

26. Vehicle mounted

28. Ranger

29. Rail

30. Rom

32. UVolle-SCITI – Corona Inspection Training Institutewww.citi-training.com

33. www.ofilsystems.com Thanks.