Voltage Regulator Lightning Arrestors

[Milliamp]

Is there any data on sizing the lightning arrestors used on voltage regulators, normally connected source to load?

 

[itsmoked]

How about some useful information to go with the question. Your application perhaps?

Keith Cress
kcress -

http://www.flaminsystems.com

 

[magoo2]

GE used to have an internal arrester across the series winding for their design. McGraw used an external arrester so you might check with Cooper Power Systems.

If you had a 7200 V regulator, the series winding would normally see 720 V at most (i.e., 10%), so a low voltage arrester of 750 V or more would work.

You'd still have a 9 or 10 kV arrester at the terminals, but you'd also have one for the series winding.