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 3 replies
Subscribers 34 subscribers
Views 890 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

Filter coupler

lyledunn over 1 year ago

Could someone tell me what this is beside the isolator on this rather grand consumer unit? Serves a 2 bedroom apartment in Portugal.

0 OlympusMons over 1 year ago

images.app.goo.gl/MHbU2BcJRDpwSMU97

This?
Cancel
Vote Up 0 Vote Down

Cancel
0 mapj1 over 1 year ago

Indeed - in this role, single phase, basically a low pass filter or line impedance stabilisation network (LISN) , Sort of thing that smooths out fast edged spikes by having a low impedance at 50Hz but rising with frequency, Inside I expect to see a series inductor between power in and out, and a parallel capacitive shunt between the output and neutral, and some capacitive coupling out the side to allow phases to be cross linked at HF on the load side.

I wonder how much they charge for it. The ones we have on our EMC /EMP chambers are eye wateringly expensive, but these look more commercial grade. Data sheet is a bit thin on actual impedance values and maximum levels etc.

Mike.
Cancel
Vote Up 0 Vote Down

Cancel
0 mapj1 over 1 year ago

here we go https://www.domoticalia.es/es/index.php?controller=attachment&id_attachment=63

https://www.domoticalia.es/es/index.php?controller=attachment&id_attachment=62

https://www.domoticalia.es/es/index.php?controller=attachment&id_attachment=147

so general filtering / RF isolation between the load side and the dirty mains and a narrow band tap at 120khz for the side port for linking to other lines carrying X10 signals.

Mike
Cancel
Vote Up 0 Vote Down

Cancel

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.