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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?
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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.
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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
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