Surge arresters limits overvoltages produced by transient charge injection, in order to protect transformer insulation, for example, between windings and tank.
They should be connected to the tank. Grounding point is no important.
Grounding grid limits step and contact potential.
See...
You need to interrupt the current without bouncing. A mercury switch can do this in less than 10 nonoseconds.
The problem to solve is to cancel the efects of parasitics.
I made a nanopulse generator using a common level sensitive mercury switch. The resulting pulse was really clean, showing no...
I am trying to build a Transmision Line Pulse generator for EMC testing. Can anybody tell me where to find a subnanosecond switch for this application? As far as I know, mercury relays are the devices normally used for this purpose, but I did not find a manufacturer in the WEB.