rcd tripping times

Farmelectrics · Feb 24, 2015

just a quick one doing some rcd tests today, and at x1 value the tripping time was 46mseconds and at x5 29mseconds now i no that as long as at x5 value is under 40mseconds all is ok just thought the x1 value was a bit high so my question is there a max value for times 1 as i must admit not had x1 values that high before your thoughts please

telectrix · Feb 24, 2015

x1 should trip within 300mS. TN, or 200mS TT.

Farmelectrics · Feb 24, 2015

ok cheers tel generally my x1 tests have allways been under 3omseconds cheers

Pete999 · Feb 24, 2015

farmelectrics said:
ok cheers tel generally my x1 tests have allways been under 3omseconds cheers

Depends if it's BS 4293 or BSEN61008 or rcbos BSEN 61009

Farmelectrics · Feb 24, 2015

generally theve been bs 60898 most are on the sites we look after

Jay Sparks · Feb 24, 2015

farmelectrics said:
generally theve been bs 60898 most are on the sites we look after

This is an mcb not an RCD. If your cu has 60898 in, the rcd's will probably be 61008 as pete says. Or rcbo's 61009.

Des 56 · Feb 24, 2015

Jay Sparks said:
This is an mcb not an RCD. If your cu has 60898 in, the rcd's will probably be 61008 as pete says. Or rcbo's 61009.

I was going to say the same,lets hope farm had a brain fart or this may now get interesting lol

telectrix · Feb 24, 2015

probably a brain fart.. well he is almost welsh (wirral).

Pete999 · Feb 24, 2015

telectrix said:
probably a brain fart.. well he is almost welsh (wirral).

I sincerely hope he had a brain fart

telectrix · Feb 24, 2015

it's only numbers, who cares?

BES · Feb 24, 2015

There all the same those switchy things than the wires go in. I only use the ones with 40 on them cause its my favourite number.

Des 56 · Feb 24, 2015

telectrix said:
probably a brain fart.. well he is almost welsh (wirral).

mmm So sorry to get that info tel ,it must have been one enourmous let down

After all,being born so close and yet not quite making the promised land

telectrix · Feb 24, 2015

but if the wirral was in wales, would there be enough sheep to go round?

would the sheep need the wellies to cross the dee estuary?

Leesparkykent · Feb 24, 2015

http://www.niceic.com/Uploads/File6438.pdf

Simonslimline · Feb 24, 2015

telectrix said:
but if the wirral was in wales, would there be enough sheep to go round?

would the sheep need the wellies to cross the dee estuary?

These lot should be just fine.

[ElectriciansForums.net] rcd tripping times

Farmelectrics · Feb 24, 2015

I'm big enough to admit my mistake just for the record they are bs 61009

davesparks · Feb 24, 2015

farmelectrics said:
just a quick one doing some rcd tests today, and at x1 value the tripping time was 46mseconds and at x5 29mseconds now i no that as long as at x5 value is under 40mseconds all is ok just thought the x1 value was a bit high so my question is there a max value for times 1 as i must admit not had x1 values that high before your thoughts please

What is the point of conducting tests if you do not know what constitutes a good or bad result?

ian.settle1 · Feb 24, 2015

telectrix said:
but if the wirral was in wales, would there be enough sheep to go round?

would the sheep need the wellies to cross the dee estuary?

I had my way the would be razor wire across the border and any bugger trying to get across it into England would be shot.

There again I could take solence in the fact I catch a Welshman inside Chester city walls after 6 at night I can legally kill him as long it is with a bow and arrow.

TJ Anderson · Feb 24, 2015

farmelectrics said:
I'm big enough to admit my mistake just for the record they are bs 61009

Then they are not BS. It is BSEN 61009 300ms max 1x and 40ms max 5x. A BS type (4293) would be 200ms max 1x and 40ms max 5x. Wait until you test an MEM 30ma RCD, for whatever reason they are often 100+ms on 1x and only just scrape in under 40ms on 5x.

Des 56 · Feb 24, 2015

ian.settle1 said:
I had my way the would be razor wire across the border and any bugger trying to get across it into England would be shot.

There again I could take solence in the fact I catch a Welshman inside Chester city walls after 6 at night I can legally kill him as long it is with a bow and arrow.

Wow that was intense

Its probably best now to have the cheques sent by post

uksparks · Feb 24, 2015

I always found that hager boards that are around 10 - 15 years old, the 1x usually comes out at around 135ms, only ever seen it on these boards, and interestingly my hager board of the same era (2000) does exactly that, but the newer ones are 30 - 40ms.

I have to say I always make a note on the cert, although its perfectly acceptable and within, make a note that it's on the higher end of what I would like to see, but nothing needs to be done. I guess I just make a note on an observational level in case the next person questions it and has my paperwork to hand.

davesparks · Feb 24, 2015

The dimmers I install used to have hager RCDs in them and they were always in the late hundreds for x1 trip times.

They use Eaton parts now since Eaton bought the company (cooper controls) that own the company (zero88) that manufacture them. Funnily enough zero88 are welsh! (As far as I know they still are)

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