Ultrasound port enables detection of faults in electrical distribution systems and switchgear
VP12 ultrasound port
IRISS has launched the VP12 ultrasound port, which enables technicians to identify potentially hazardous and costly faults, such as arcing, tracking and corona, in electrical distribution systems and switchgear.
According to the company, the system — which can be used for either ultrasound or infrared inspection tasks — provides access to consistent-quality data regardless of the technician’s experience or the enclosure rating.
In ventilated switchgear, the port provides a standardised measurement point, but in NEMA-rated enclosures its effect is said to be even more valuable.
Technicians wearing the appropriate personal protective equipment can collect data on critical, energised equipment in accordance with the safety mandates listed within NFPA70E.
- Body measures 6.5cm in diameter and features a 1.2cm port
- Port is manufactured using non-conductive, UL94 switchgear-grade plastics and insulated to 30kV/mm
- Standard kit includes an infrared transmissive lens for optional and permanent use as an infrared window for small targets or small infrared camera lens apertures
- Alternative grill opening complies with the IP2X standard for maximum hole size in switchgear to prevent the accidental insertion of tools and fingers
- Lockable cover maintains IP65/NEMA 4 seal when closed and the overall unit is impact and flame resistant in line with IEEE standards
Infrared (IR) thermography has never been a simple thing. Emissivity, reflections and transmission rates for IR windows can cause confusion and frustration without the proper knowledge, experience, training and skill. And those four qualities are exactly what the American Society for Non-Destructive Testing (ASNT) defines as certification. This paper from IRISS is intended to simplify the complex subject of IR window transmission.
In this technical article, IRISS provides a range of infrared window installation hints and tips, including the following: preparing your infrared targets; treating bare metal surfaces; and ensuring you have extra cutting tools.
The VP-12-IR’s 12mm viewing area was designed for tight areas or for use with infrared (IR) cameras with smaller, wider angle lens systems.
In this article, IRISS provides a range of infrared window installation hints and tips, including the following: (1) take plenty of high-quality digital images; (2) know your infrared camera’s minimum focus distance; and (3) check the operation of the infrared window before energising the equipment.
Every infrared camera defines its field of view (FOV) across a horizontal or vertical axis. According to IRISS, there are two ways to determine the FOV on a camera: (1) you can calculate the FOV; or (2) you can measure the FOV with a practical field test. A practical FOV test is a quick method to determine what can be seen at set distances with your camera, the lens and infrared windows.