RCD trip time tests

[biggrilla]

Hi folks,

Hoping somebody on here can give me a little bit of advice. Just tested trip times on a 30mA 61009 RCD, greatest time at x1 was 24ms and at x5 was 28ms.

I know the regs state that at x1 under 300ms is needed and at x50 a reading under 40ms is required - but should the x1 reading be greater than the x5 - or is it "just one of those things!"


Thank you in anticipation of help!

BigGrilla

 

[NEsparky]

I realy woulnd worry about it yes they should be the other way round, but they both pass it could just be down to the slightest difference in connection.

I would even say if you were to test agin it would be different.

I wouldnt worry about it mate.

Jim

 

[robsparky1975]

bleedin rcds,fitted a dual board recently,one rcd kept tripping on half cycle,done ramp test at 30ma,showing 14ms,fitted replacement same sort of thing,ok i was getting annoyed by this time,must have reset that thing 20-30 times and then it started to play ball,this was a brand new hager unit,so i take it citys dont sell many as they sit in the stores for some time,wonder how many rcds out there never get tested with button,easy for them to seize up a bit.

 

[sparkylad]

Hi Biggrilla. I find most RCBOs give approx same trip time on x1 as x5----should always do 180 phase shift test also

 

[pushrod]

Hi Biggrilla. I find most RCBOs give approx same trip time on x1 as x5----should always do 180 phase shift test also

Agree - (largest value between 0 and 180 is recorded)