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NFPA 70B and CSA Z463 for Electrical Maintenance

When does airborne ultrasound fit in the standard?

By Adrian Messer, Manager of U.S. Operations, UE Systems

When it comes to establishing an electrical maintenance program for your facility, there are many resources at your disposal. For inspection of energized electrical equipment, an infrared camera is probably the first tool that comes to mind. However, a growing number of maintenance and reliability professionals have come to realize that airborne ultrasound is a viable tool that can be used to inspect and diagnose conditions such as corona, tracking, arcing, and partial discharge in energized electrical equipment.

The standards that maintenance and reliability professionals access for guidance in establishing procedures and best practices for inspecting and maintaining electrical equipment in facilities are National Fire Protection Association (NFPA) 70B, and Canadian Standards Association (CSA) Z463. Both of these documents have been established to create recommended practices for inspecting and maintaining electrical assets in order to prevent accidents and reduce downtime.

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