Innovative Solutions for a Networked World

Characterising a UK LVEDN at HF

Confidential to UK RA TWG

Characterising a UK (underground) LVEDN at HF

Some Preliminary Measurement Results

Presentation to UK RA TWG (VDSL, PLT, Home Networks)

Dr Paul Brown

White Box Solutions, UKSlide 1 of 9

Innovative Solutions for a Networked World

Characterising a UK LVEDN at HF

Confidential to UK RA TWG

Fuse Cut-out

Service Cable

Consumer Unit

Electricity Meter

Customer Premises

Slide 2 of 9

Innovative Solutions for a Networked World

Characterising a UK LVEDN at HF

Confidential to UK RA TWG

Customer Premises Cut-Out (CPCU)

Slide 3 of 9

HF Comms Port

Innovative Solutions for a Networked World

Characterising a UK LVEDN at HF

Confidential to UK RA TWG

C1F1To Live term.block

To Earth term.block

BNC CommsPort

CPCU Circuit Diagram

T1

Slide 4 of 9

Innovative Solutions for a Networked World

Characterising a UK LVEDN at HF

Confidential to UK RA TWG

Feeder PillarTransformer

Substation

Slide 5 of 9

Innovative Solutions for a Networked World

Characterising a UK LVEDN at HF

Confidential to UK RA TWG

Noise Floor CPCU (limit = spectrum analyser)

Slide 6 of 9

Innovative Solutions for a Networked World

Characterising a UK LVEDN at HF

Confidential to UK RA TWG

Slide 7 of 9

Insertion Loss CPCU to 13 Amp. Mains Socket in Garage

Innovative Solutions for a Networked World

Characterising a UK LVEDN at HF

Confidential to UK RA TWG

Slide 8 of 9

Insertion Loss Sub/Stn to CPCU (best case)

Innovative Solutions for a Networked World

Characterising a UK LVEDN at HF

Confidential to UK RA TWG

Slide 9 of 9

LVEDN Radiation Efficiency measured at CPCU wrt Inverted ‘V’ Dipole Antenna @ 6 MHz