RCD Times on EIC

[parm]

Hi All,

Getting a bit confused here, do you record the 5*I or I disconnection time on the EIC cert?

Cheers

 

[Guest123]

You have to record both on NIC ones......which ones are you using???

 

[sjm]

Beaten to it by Lenny. You should record both.

 

[parm]

Sorry should have made that clear, using the basic IEE certs that you can print off from a PDF. It only has one box to record and says refer to note 13 but it doesn't clarify any further. Thanks in advance

 

[sjm]

What does note 13 say?

 

[parm]

Note 13 says' The operation of RCDs shall be tested by simulating a fault current , independent of any test facility in the device. Record operating time in column 13. Effectiveness of the test button must be confirmed'

What do you think?

 

[sjm]

I would suggest that 1xI is the result that should be recorded as this is the fault current that will cause the RCD to operate.

 

[Amp David]

1x in the column and note the 5x in comments/remarks box

 

[mad frankie]

record the 1x1 which should be the highest trip time obviously if you have a trip time over 40ms on either 1x1 5x1 you would have to check your rcd or meter

 

[parm]

Thanks all, makes sense

 

[telectrix]

can anyone tell me where to find in brb, the 40msec. max.trip time for RCD?

 

[mad frankie]

should be chapter41

 

[mad frankie]

page 82 16th edition on site guide 11.5 wher an rcd or rcbo with a rated residual operating current of 30ma is used to provide supplementary protection against direct contact with a test current of51 n the device should open in less than 40ms, unless the the protective conductor potential rises by less than 50v
regards

 

[telectrix]

yeah, got that. 40msec at x5. but what about x1? i was always under the impression that the max. trip time at x1 was 200msec.

 

[Guest123]

BS EN 61008 / 61009 = 300mS @ 1 x IdeltaN

BS 4293 = 200mS @ 1 x IdeltaN