How to build a surge suppression circuit?

[gupta]

how i can build surge suppression circuit with minimum response time and maximum energy dissipation using "metal oxide varistors"
OR
plz give other suggessions and websites,
thanks

 

[platonas]

Re: surge suppression

You can connect the varistors in a Delta form. that is, between Live-Neutral, Live-earth, Neutral earth. Also you can use an isolation transformer which can supply your load.
Varistors are placed on primary of the transformer.

Everything depends on the application, you have to be more specific on application and energy to be absorbed by varistors.

 

[IanP]

Re: surge suppression

Here is an example of MOV-Diode Hybrid SPD (surge protection device) which also includes an inductor:
**broken link removed**
and here is an example on how to be protected by "large" inductors:
**broken link removed**
It also discusses reliability of MOVs..

 

[netsearcher]

Re: surge suppression

see this one :
**broken link removed**