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 RCCB for Water Heater

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jchong
post Jun 11 2022, 06:42 PM

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QUOTE(ceo684 @ Jan 12 2022, 07:13 PM)
Modern RCD from ABB, Hager come with anti nuisance trip feature, it will not nuisance trip much compared to those sold before 2000, about 97% reduction.
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I saw some RCCBs listed as 'High Immunity'. Is this HI the same as anti nuisance trip feature or it's something different?
jchong
post Jun 12 2022, 04:58 PM

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QUOTE(ceo684 @ Jun 11 2022, 10:28 PM)
HI is usually used to described advanced anti-nuisance trip (protect against switching transients and harmonics).
Those with anti nuisance trip (protect against switching transients) for residential use will suffice.
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Thanks for the reply. Learned a lot from your various postings.

 

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