John I know you monitor the IEC TC 108 safety saga.
Have you noticed the long running Japanese proposal to use two surge
protection components (SPCs) in series between services? It amounts to
building an MSPD, with no PE connection, into the equipment. This
guarantees the surge from one service can transfer to another. This
proposal is driven by the types of power distribution system in Japan.
Regards,
Mick Maytum
Safety and Telecom
Standards
[email protected]
------ Original Message ------
From: "John Woodgate" <[email protected]>
To: "mickm" <[email protected]>; [email protected]
Sent: 19/09/2017 10:19:07
Subject: RE: [PSES] Meaning of MSPD
Thanks. I did not recall your earlier post. Your last sentence gives
another good reason to *separately* ground SPDs for different systems.
With best wishes DESIGN IT IN! OOO – Own Opinions Only
www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England
UK is a sovereignty, not a Zollverein-ty
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