Corona discharges and hot spots in a single pass
COROCAM 8HD
Corona effect cameras
COROCAM 8HD
Combined corona and infrared camera
| C/ María Barbeito, 14 | Contact Contact T [+34] 982 20 99 20 |
|---|---|
| 27003, Lugo, Spain | T [+34] 982 20 99 20 info@amperis.com | www.amperis.com |
Dual diagnosis of corona discharges and hot spots
Dual diagnosis in a single inspection
By combining the solar-blind ultraviolet channel with a radiometric thermal camera, the CoroCAM 8HD locates corona discharges and hot spots on the installation in the same pass, without repeating the inspection with two separate units.
High-resolution thermal channel
The vanadium-oxide microbolometer detector covers the 7.5 to 13.5 µm band, measures from -40°C to 160°C with an NEdT sensitivity below 62.5 mK, and offers 640×512 pixels with 15 configurable colour palettes and isotherms.
Certified ultraviolet sensitivity
The solar-blind ultraviolet channel detects emissions of up to 2.05×10-18 W/cm2 (3 pC at 20 m, IEC 60270:2000), with an optional Non-Solar-Blind mode of around 1×10-18 W/cm2 (0.8 pC at 15 m) for indoor or night-time inspection.
Thermal-channel isotherms over a string of insulators
Synchronised zoom across all three channels
The 30x optical zoom of the visible channel is synchronised with the digital zoom of the ultraviolet and infrared channels, so all three always show the same field of view at the requested resolution.
Applications and functions
Applications
- Joint inspection of corona discharges and hot spots on high-voltage substations.
- Root-cause diagnosis of faults involving both corona effect and heating.
- Demanding predictive maintenance for professional inspectors.
- Technical documentation with environmental variables logged against each measurement.
Ultraviolet channel
Gain is set manually, while the threshold, integration and noise reduction optimise the image. The discharge is overlaid in 6 preset colour combinations or 100 user-selectable hues, with background priority and adjustable transparency.
Thermal channel
Focus, from 2.3 m to infinity, can be automatic or manual, with 8x digital zoom and a 10.4° × 8.3° field of view. Level and span are adjusted automatically or manually, and the operator can manually log distance, air temperature and pressure, humidity and wind speed for each measurement.
Visible channel and GPS
The 1920×1080-pixel sensor offers 0.1 lux in day mode and 0.05 lux in night mode, with automatic or manual focus from 1.5 m to infinity. Internal GPS with an external booster antenna geolocates every point inspected.
Software and post-processing
On-board recording
Still images, video and radiometric data in UCF format are automatically saved to the 64 GB or larger microSD card, together with the camera settings and the environmental variables logged by the operator.
Download and reporting
Material is downloaded via card reader or USB. The CoroBASE software, included as an accessory, organises the images, videos and radiometric data from each inspection to produce the report; no additional licence is required.
Grip and menus
The one-handed rotating grip and multi-function keypad switch between UV+visible, UV+infrared or each channel separately from an icon-based menu with 10 user profiles.
| COROCAM 8HD — MEASUREMENT DATA | |
|---|---|
| Thermal channel | VOx, 7.5-13.5 µm; -40°C to 160°C; NEdT < 62.5 mK; 640×512 px |
| UV sensitivity (solar-blind) | 2.05×10-18 W/cm2 · 3 pC at 20 m (IEC 60270:2000) |
| UV sensitivity (optional NSB) | ≈1×10-18 W/cm2 · 0.8 pC at 15 m |
| Field of view | UV 8° × 6° (~10° diagonal); thermal 10.4° × 8.3°, 8x digital zoom |
| Visible channel | 1920×1080 px; 0.1/0.05 lux day/night; 30x optical zoom, up to 12x digital |
| Focus | Thermal 2.3 m to infinity; visible 1.5 m to infinity; both automatic or manual |
| GPS and connectivity | Internal GPS with external booster antenna; Ethernet, USB, RS-232 |
| Recording | JPG, AVI 720p and UCF radiometric data on 64 GB+ microSD |
| Protection and weight | IP43; 2.5 kg with battery; 215 × 200 × 155 mm |
| Power and warranty | Li-ion, up to 3 h; 12-month warranty |
Specifications subject to change without notice.