SURGE ARRESTERS ARE OFTEN OVERLOOKED WHEN PERFORMING POWER FACTOR TESTS on transformers, breakers and other apparatus in a substation. Oftentimes, the testers are aware of how a transformer or a ...

If you have paid close attention to power lines, you might have noticed metal spring-like structures close to the transmission towers. These spring-like structures are known as lightning arresters, ...

Thomas & Betts’ metal-oxide surge arrestors include the following features: IEEE 386 interfaces provide convenient energized connection with other 200A loadbreak or deadbreak components EPDM molded ...

The National Electrical Manufacturers Association (NEMA), on behalf of its Surge Arresters Section, has published six guides and accompanying videos on arresters. These include four guides on ...

The NEC distinguishes between surge arresters and transient voltage surge suppressors (TVSSs), yet both provide surge protection. What's the difference between them? Surge arresters generally apply to ...

Operating at 12.5-GHz frequencies, the gas-discharge-tube-type SurgeGuard PTC-Sax-SAF-20 lightning arrester includes SMA connectors. Using a nickel-over-brass construction, a gold-center conductor, ...

The primary defense to protect electrical equipment from over-voltages is surge arresters. These necessary devices hold metal oxide varistors (MOVs) and are rapid response protectors against voltage ...

DURING the last five years an investigation has been made of the discharge currents of a number of 38,000-volt lightning arresters. The transmission system on which these arresters were installed is ...

What is inside one of those things? The folks over at Northstreetlabs have set out to answer just that question. You’ve seen these things before, and if you’re uneducated on the subject like myself, ...