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300Ma 4 Pole Rcd - Pme Supply?
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<blockquote data-quote="steptoe" data-source="post: 398344" data-attributes="member: 7"><p>I'll feed a bit on this one,</p><p></p><p>an S type, or TD [time delay] has a set delay at the beginning of the trip sequence, so its permissable trip time is greater than a 'normal' RCD</p><p></p><p>that is how you can gain discrimination,</p><p></p><p>not, as a lot of people mistakenly think, by using a larger rated device,</p><p></p><p>ie, 30mA 100mA 300mA , should all trip within the same time allowance,</p><p></p><p>whereas an S type will have a larger timeframe to still comply.</p></blockquote><p></p>
[QUOTE="steptoe, post: 398344, member: 7"] I'll feed a bit on this one, an S type, or TD [time delay] has a set delay at the beginning of the trip sequence, so its permissable trip time is greater than a 'normal' RCD that is how you can gain discrimination, not, as a lot of people mistakenly think, by using a larger rated device, ie, 30mA 100mA 300mA , should all trip within the same time allowance, whereas an S type will have a larger timeframe to still comply. [/QUOTE]
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