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Re: VDE 0100 to introduce AFCIs [Re: sparky] #219079
01/17/18 10:32 AM
01/17/18 10:32 AM
L
LongRunner  Offline
Member
Joined: May 2015
Posts: 51
Albany, Western Australia
30mA, generally (though 10mA RCD outlets are available for medical applications). At least 2 RCDs are required in an Australian home, and each RCD may feed a maximum of 3 subcircuits.

Normally we use the Multiple Earthed Neutral system (similar to Protective Multiple Earthing in the UK), which does not require a main RCD as used with TT systems.

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Re: VDE 0100 to introduce AFCIs [Re: Texas_Ranger] #219091
01/19/18 08:03 PM
01/19/18 08:03 PM
S
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,347
Thx LongRunner

I gotta keep referencing these earthing systems you folks are talking about ,so bear with me.

So, if you're using 30ma RCD's , are they now going to be marketed as 30ma afci RCD's?

~S~

Re: VDE 0100 to introduce AFCIs [Re: Texas_Ranger] #219093
01/20/18 01:30 PM
01/20/18 01:30 PM
U
uksparx  Offline
Member
Joined: Apr 2005
Posts: 47
Egremont,Cumbria,UK
hmm, reading some snippets from the upcoming new regulations here in the UK, it looks like we are going to have to deal with the horrors that are AFCIs here very soon!

Re: VDE 0100 to introduce AFCIs [Re: Texas_Ranger] #219094
01/20/18 05:09 PM
01/20/18 05:09 PM
S
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,347
Ok Uksparx, i'm going to let you in on the dirty little afci secret. They are no more than what your RCD's already are. AFCI technology is based on time honored toroidal coils

This is the heart of your RCD's

No matter how much electronica one places in line with a toroidal, it will all only sense what a toroidal can sense

Our testing labs devised a 15KV 'simulator' , which energized a piece of zip (lamp) cord , with a cut in it AND wrapped in flammable tape to pass a 'series arc' test here

The rest is afci "combination" history

I would like to think your country has a tad more integrity in it's validation of consumables

~S~

Re: VDE 0100 to introduce AFCIs [Re: Texas_Ranger] #219142
02/12/18 02:36 PM
02/12/18 02:36 PM
T
Texas_Ranger  Offline OP
Member
Joined: Dec 2001
Posts: 2,412
Vienna, Austria
No, there are no combined RCD/AFDD devices as far as I know, the DIN rail AFDDs are in series with an RCD where RCD protection is required.
According to a Siemens representative quite a few high-load circuits won't ever see AFDD protection since it's technically impossible to design a three-phase AFDD and most significant household appliances (cooker, tankless water heater) are three-phase loads.

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