Power Electronics and Energy

A ThunderBolt Zapped near our Home. The Power Shut down, The Earth Leakage Circuit Breaker ELCB tripped. The Problem was a Mains Strip Board, It was the Puncture and Short of Y-Caps. 

The caps that were used are very good caps 630V DC rated, but not approved Y-Caps. And five other similar boards have survived, The Board that was zapped is 12 Years Old. It was the same board that had given some problem in the Kitchen a year back.

The cap who Broke Down saved other equipments, saved my day. The lightning bolt was so loud, it woke me up, in sound sleep. I am sure even a Good Y-Cap would have failed, The Bolt from the Blue was a Big one.

This reminds me of a friend of mine who used to Troubleshoot equipment by Sniffing. I saw him sniff out with his nose, Shorted Tantalum Caps in A Genrad Danbridge. Genrad means General Radio, And the LCR bridge was Huge made of discretes and Simple ICs.

One thing leads to another, the Celestial Spark has ignited old Memories. The Chain Reaction Reminds me of another being who could identify Metals by Tasting-Sniffing. He would detect Platinum and Gold, wires and Plating in Old Valves and Antique Telecom Equipment.

 

Supplementary to EMI/RFI/EMC Immunity of an Equipment. Many Installations are subject to Highly Disruptive Electrical Environment not just EMI. Depending on the budget and the situation a solution has to be found. Sometimes a CVT or an Isolation Transformer can do a lot of good. 

Converting all Energy inputs to battery energy and having a Isolated Synthetic Sine Supply may be an expensive but good solution. Either way the devices that face the harsh environment have to be over rated along with these protections. - delabs design Notes

Design of AC Electronics Load Surge Protection - World Academy of Science, Engineering and Technology - WASET

 

Abstract-This study examines the design and construction of AC Electronics load surge protection in order to carry electric surge load arisen from faults in low voltage electricity system (single phase/220V) by using the principle of electronics load clamping voltage during induction period so that electric voltage could go through to safe load and continue to work. The qualification of the designed device could prevent both transient over voltage and voltage swell.

A ThunderBolt Zap can damage electronic parts. The Earth Leakage Circuit Breaker ELCB or Overload Breaker may Trip.

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Fully automated Electrical Safety Testing to IEC60601-1. Sentinel II saves time by scanning patient connections for leakage current without powering down the medical device.

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