RCD 0.0s??

[Loopytunes]

Hi all,

Just back from an EICR where one of the RCDS was testing out at 0.0ms for the 1/2, 1 and 5 tests both ways, not had this problem before, can anyone shed any light?

Thanks in advance,

Loops

 

[Pete999]

A bit more info required loopytunes, type, size, how were you testing etc

 

[telectrix]

te terminals with no load connected. if still duff readings, then it's a duff RCD

 

[Guest77]

Was the correct milliamperage scale tested? is the tester calibrated and functioning correctly? two questions to start.

 

[GMES]

Hi all,

Just back from an EICR where one of the RCDS was testing out at 0.0ms for the 1/2, 1 and 5 tests both ways, not had this problem before, can anyone shed any light?

Thanks in advance,

Loops

Here you go mate

 

[yellowvanman]

Hi all,

Just back from an EICR where one of the RCDS was testing out at 0.0ms for the 1/2, 1 and 5 tests both ways, not had this problem before, can anyone shed any light?

Thanks in advance,

Loops

Not had it for all 6 measurements, when I have had it on isolated occassions I have assumed the trip time was quicker than the tester could actually measure (I assume your using a Fluke)

 

[Sintra]

What type of RCD is it. Is your meter set for that type. Have you ramped it?

 

[shanky887614]

Are you sure you have got it on the right rcd setting?

If you did the test on say 500/1000ma I wouldn't be surprised if you got a reading extremely low

 

[Loopytunes]

It's a 30mA RCD tested using a Fluke 1651b which has no ramp test, tested using correct settings, wired up and isolated same results, was thinking duff RCD but wanted to check to see if this has happened to anyone before?

 

[Loopytunes]

And yes tester callibrated

 

[davesparks]

If it tripped at 1/2 it's rated current then it is oversensitive and therefore needs replacing.

 

[Sintra]

The op still hasn't stated what TYPE of RCD it is.

 

[Loopytunes]

Apologies, it is a Contactum 63A 30mA DP RCD in a domestic property -

Associated standards:
BS EN 61008


Rated voltage:
220-250V



Rated current:
63A


Rated frequency:
50-60Hz


Switched poles :
2 pole


Minimum switch contact gap :
4 mm






Ambient operating temperature:
-5 to 40°C (24hour average not exceeding 25°C)


Maximum installation altitude :
2000m

 

[Loopytunes]

And it is NOT installed over the maximum installation altitude of 2000m.......

 

[Sintra]

So if it's type B have you got your tester set to DC. Has it got the type B symbol below.