Three Phase Rcd No Neutral. Test Button?

[Tricey]

Hi,

I have several Europa RCD to install they are three phase 415v. They are being connected to a three phase supply that has no neutral. We cannot get the test button to operate when pressed. When you hold test button it is putting a resistance of 3.28K ohm between the neutral connector and L2. What step should I take to get operation from the test button?

Cheers Adam

 

[steptoe]

link it to earth?  :C

 

[Evans Electric]

You could try a 4W  resistor between Term 4  -  Term N   or ask your supplier . 

 

[Andy™]

A: get a neutral

B: get an RCD that has the test between 2 phases

C: suitable resistor between 'neutral' and another phase

 

[OnOff]

On the Schneider Si RDSs it's a 2.4k resistor between the N terminal and one of the line terminals. Got an "uncontrolled" info sheet on it somewhere from them............

TBH if you're installing them you should be testing them with the appropriate kit and not assuming pressing the Test button constitutes a test. You won't get your tripping times etc.............unless you can count in mSecs........ :lol:

Feed in top only aren't they too?

Email Europa, [email protected]

 

[ProDave]

link it to earth?  :C

+1

That will give you the same "leakage" current.

A note on the EIC to say what you have done so the next sparky does not wonder why you have E into the N terminal.

 

[Sharpend]

You're not recommending that a job is done properly are you paddler, oh that is frowned upon these days, you must have been away for a long time!!

 

[Sharpend]

Well now to come to mention it..............................

No but deke on the other hand he's...............

 

[Evans Electric]

...........he,s what ?     You're talking about the Forum Sparks of the Galaxy  here  don't ye know!!  

 

[OnOff]

Buy a 3 pole RCD and not a 4 Pole RCD, I would not personally link the N to an Earth just to get the test button to work 

Not good practise and the N is not an E terminal

Only real solution it to get the correct RCD for the job - a 3 pole one !

Probably why Schneider technical stamp "UNCONTROLLED" all over their doc. I got that long ago I think they faxed it.........

 

[OnOff]

Found the uncontrolled copy from Schneider.......Europa may say similar:

 

[NozSpark]

I can't read that,,,, it's in French!!!!

 

[OnOff]

I can't read that,,,, it's in French!!!!

Right click on the image and "Translate to English"......