Need a portable RCBO to trip faster than general

[westward10]

Members on here are offering you sound advice especially in regard to your 'testing' methods. Any more insults to forum members this thread will be gone.

 

[DPG]

Remember also that if you use a time delayed RCD then you probably won't meet disconnection times, depending on what your local regs stipulate.

 

[Energizer]

I have identified the problem and a potential solution.
Thanks to all members

 

[DPG]

I have identified the problem and a potential solution.
Thanks to all members

If you do decide to go to a type S device you may well be compromising safety. The 40mS is there for a good reason.

 

[Energizer]

I remember to begginer electricians to not repeat my test. I know what I'm doing.
This thread is destinated to advanced members who understands the danger of electricity and think twice about the safety of the life

 

[brianmoooore]

Nobody here mentioned the term of ''selective tripping'', when you have 2 RCD in cascade. In my case, I should replace my general RCD by S type one. The selective residual current protective devices have the identification code S.

Those who are lacking the knowledge are scratching the head and leaving out

I mentioned this in post #19 of your other thread.

 

[mainline]

I have identified the problem and a potential solution.
Thanks to all members

Can you enlighten us to the problem and solution ?.

 

[Energizer]

I mentioned this in post #19 of your other thread.

Exactly. Thank you. Only the S type escaped from my attention. I didn't know before about existence of this type of devices. When I've found the selective tripping explanation, this caught instantly my attention

 

[Energizer]

Can you enlighten us to the problem and solution ?.

The problem is that two cascading RCD are tripping in the same time when leak occurs. Because the upstream RCD is not selective.
The potential solution (valid for my laboratory only, let's say) is mentioned in the post #18
I remember to users to not repeat my test if they don't know what they are doing

 

[ipf]

Exactly. Thank you. Only the S type escaped from my attention. I didn't know before about existence of this type of devices. When I've found the selective tripping explanation, this caught instantly my attention

You're obviously finding out new things but if you didn't even know that S type devices existed, it just about sums up the knowledge involved in your ideas.