The IET is carrying out some important updates between 17-30 April and all of our websites will be view only. For more information, read this Announcement

Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 26 replies
  • Subscribers 32 subscribers
  • Views 10051 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Tripping RCD after smart meter install

Stewart Mason
I got called to a property today. The RCD had started tripping after a smart meter was installed. The insulation resistance between line and cpc was over 300 Mohm on all circuits. The RCD was an MEM unit in a memera 2000 consumer unit.


Whilst at the property the RCD did not trip. I did a google search and one result suggested the RF from the smart meters transceiver was upsetting the RCD. When the smart meter was first energised I guess it starts communicating with the supplier causing said RF.


We have had 3 properties now all with MEM RCD's which have started tripping after smart meters have been installed, normally in the early hours of the day.


Just wondering if anyone else has experienced of this issue?
Parents
  • 0
    I'm not sure what to say to that picture.  ?

    I suspect that many folk would not like to see that during  an inspection. What have you earthed it to ?

    I presume the consumer unit is plastic and you can rip the tin foil  cover off to get to the main switch if you need to. Be really careful where the foil goes - if any tears off and drops in the box it could be 'fun' in a bang sort of way.


    Would you be able to reveal the make and model of the RCD that trips, and the make and model of the smart meter?


    I have been saying for years that the test levels for immunity for CE marking are not really high enough, and equally the test levels for spurious emissions are really a bit too high, as the two together only work if you assume you are free to move things apart in your own home to achieve co-existance - in a case like this clearly you cannot get victim and source far enough away from each other.

    There may be other factors such as conducted interference, so mitigations with ferrite rings may help, but it is far from clear cut.

Reply
  • 0
    I'm not sure what to say to that picture.  ?

    I suspect that many folk would not like to see that during  an inspection. What have you earthed it to ?

    I presume the consumer unit is plastic and you can rip the tin foil  cover off to get to the main switch if you need to. Be really careful where the foil goes - if any tears off and drops in the box it could be 'fun' in a bang sort of way.


    Would you be able to reveal the make and model of the RCD that trips, and the make and model of the smart meter?


    I have been saying for years that the test levels for immunity for CE marking are not really high enough, and equally the test levels for spurious emissions are really a bit too high, as the two together only work if you assume you are free to move things apart in your own home to achieve co-existance - in a case like this clearly you cannot get victim and source far enough away from each other.

    There may be other factors such as conducted interference, so mitigations with ferrite rings may help, but it is far from clear cut.

Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines