Standy generator control panel issues

[Strima]

I'd be interested in the solution to this.

 

[marconi]

Navaraj: I sent this email to First Power and Surge Protection in Sheffield UK:

First Power - Lightning and Surge Protection Specialist | First Power & Surge Protection - http://www.firstpowerandsurgeprotection.com/

'Good morning from London and thank you for responding so promptly.

I am helping a client in Nepal protect the electronic controller (GADC 321/422) which automatically starts a standby diesel generator and carries out the switchover of supplies. Following two episodes of lightning - which were indeed intense - the electronic controller has failed - presumably from some sort of over voltage picked up in the wiring to and from it.

All the main voltage cabling already has some surge protection installed and (so far) has suffered no damage whatsoever. So it is the low voltage dc (12V-24V) for which I am investigating technology which can be easily installed by the client (an electrician).

At the attachment is the ubiquitous controller. It has a dc Aux input 8-35V(bottom right), several on/off inputs from water temperature, oil pressure and fuel sensors; some current clamp inputs from the alternator output; some voltage and current sensor inputs from alternator output and utility supply; and finally some on/off outputs for cranking, hooter, etcetera.

Could you recommend please some transient over-voltage protectors for some or all of these inputs and outputs, or provide me with some pointers towards devices which may be suitable for me to study their specification and suitability for this application?