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S.P.D.s and Populated Consumer Units.

Are new populated consumer units with S.P.D.s fitted designed to mainly protect the sensitive electronic equipment downstream of the S.P.D.s WITHIN THE CONSUMER UNIT? Is that the makers' MAIN intention as R.C.D.s, R.C.B.Os and other sensitive electronic devices can be damaged by Voltage surges, as compared to basic protective devices like wire or cartridge fuses or more basic M.C.B.s?

https://www.youtube.com/watch?v=5OuirPKoY0c

Z.

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0 wallywombat over 6 years ago

whjohnson:

The thing is, would such devices be quick eniough to prevent a spike being induced in the secondary before the electronics on the south side of that were fried?

Well they're usually semiconductor based, so can be extremely fast. For example, type 2's are tested against a waveform that reaches it's peak in 8 microsecs. The main thing that will affect their usefulness is the length of the leads from the SPD to the points where the circuit is "tapped into" due to the inductance of the leads.
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0 wallywombat over 6 years ago

whjohnson:

The thing is, would such devices be quick eniough to prevent a spike being induced in the secondary before the electronics on the south side of that were fried?

Well they're usually semiconductor based, so can be extremely fast. For example, type 2's are tested against a waveform that reaches it's peak in 8 microsecs. The main thing that will affect their usefulness is the length of the leads from the SPD to the points where the circuit is "tapped into" due to the inductance of the leads.
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S.P.D.s and Populated Consumer Units.

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