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A UVcamera can help you because:

You save money, save time, and increase the reliability and safety of your facility. Electrical equipment and high voltage (HV) motors and alternators can be damaged by corona and arcing. As a Predictive and Proactive Maintenance tool, a UVcamera is able to see and detect where corona occurs, even during full daylight. These areas of power usage benefit from using a UVcamera:
Power Generation

Power Generation

The windings on High Voltage generators can be damaged by corona. At the power station, the equipment to monitor regularly for corona is:

Generator windings
Cabling
HT Terminals on step-up transformers

Switching Equipment:
Links
Circuit Breakers: oil filled CBs (OCB)
Vacuum Breakers (VCB)
Gas Filled CBs (SF6)

Protection:
Lightening arresters

Problems caused by corona

Problems caused by corona

Corona occurs with voltages above 1000 volts, and is more likely to happen in the presence of moisture, such as humid and outdoor environments.

Common problems caused by corona are:

Ozone production causes cracking of elastomer (rubber) items
Insulation damage
Corrosion - from Nitric acid formed in the presence of moisture and corona
Power loss
Electromagnetic interference
Audible noise

Power Transmission

Power Transmission

Power transmission over long distances is a common place to develop corona. Use a UVcamera to monitor the following equipment for corona:

Transmission Line :
Conductors
Jumpers
Joints
Vibration Dampers

EHT Switchyard Equipment:
HT Terminals on step-down transformers
Busbars
Conductors
Links
Circuit Breakers: OCBs, VCBs, SF6

Power Distribution and Consumption

Power Distribution and Consumption

Applicable to municipalities, heavy industry, mining and more. At the switch yards and substations, equipment to monitor for corona is:

HT Switchyard Switching Equipment

Indoor HT Switchboards:
OCBs, VCBs, SF6
Cable crutches

HT Transformer Terminals

Mini subs




High Voltage (HV) Motors & Alternators

High Voltage (HV) Motors & Alternators

High Voltage equipment has windings that can easily develop corona, especially in a humid environment.

Common HV equipment to monitor regularly for corona is:

HT Motor Terminals

Windings on:
Mine Hoist Motors
AC Motors on MG sets
Open Cast Mining Truck Traction Motors

Transformers


This is how you see corona

This is how you see corona

Corona emits UVc light. So, see UVc, and see corona. Corona is caused when the air around an energized conductor gets ionized, causing a discharge. The Nitrogen molecules in the surrounding air and moisture, get excited and emit ultraviolet radiation; UVa, UVb and most importantly, UVc radiation (100-280nm). A UVcamera separates the dominant UVa and UVb from the UVc light, (see image) so that corona discharge can be pinpointed. See below for details on our 'solar blind' UVcameras.

The UVcamera Range

For maintenance and reliability professionals, UVcameras save you time and money with non-contact condition monitoring. Some of the range is 'Solar Blind’, which means the sensitive UV lenses and filters are able to detect and separate even weak UVc signals. This can happen in full daylight, reducing the need for night work and overtime expenses. With LCD displays, you can immediately see exactly where corona discharge is occurring on your equipment, and how severe the corona discharge is. Your maintenance schedule can use this knowledge with good effect. UVcameras are light weight, so that technicians can perform continuos inspections with minimal physical strain on eyes and arms. Each model also offers its own, unique features, so touch the pictures below for details, or contact us for more info on each UVcamera.
Scalar
Scalar
Video & Photo | Can overlay UV and real life image | Set multiple scanning profiles | 4.3" LCD screen for real time recording and playback | LED flashlight |USB | 0.9kgs (2.0lb)
Luminar
Luminar
Video & Photo | Solar Blind | Can overlay UV and real life image | Temperature and relative humidity meter | High res. LCD | GPS | Powerful zoom
Uvollé
Uvollé
Video & Photo | Solar Blind | Large keys | Simple menu | Temperature and humidity meter | Data processing software | 4 hrs battery | Large LCD screen | LED flashlight (up to 3m) | Zoom | GPS
Superb
Superb
Hyper sensitive, Solar Blind lens | Can overlay UV and real life image | 'Blob’ counting | Reporting software | Manual and auto focus | Wide field of view | Powerful zoom | 5" / 6.5" LCD | USB

See corona. Save money. Save time. UVcamera.