Electromagnetic Compatibilty

New standard for In-house PLC above 30 MHz

CENELEC Committee TC210 WG 11 has completed the standard for in-house PLC devices which operate above 30 MHz. The first standard in the family - the now in-force EN 50561-1 - covers the frequency range up to 30 MHz and was debated heavily amongst radio users. It does safeguard the broadcast, amateur and aeronautical frequencies, but spoils the rest of the spectrum for local use. The reason for that is the fairly high emission limit of 110 dBµV.

The now positive voted EN 50561-3 covers measurement setup and limits for frequencies above 30 MHz, while devices which also operate on the low band (which is the usual case) still need to comply with EN 50561-1 or show compliance via an alternative route. A fairly low emission limit value between 85 and 80 dBµV (depending on frequency) was set in EN 50561-3, and additionally the amateur bands (50 - 52 MHz and 70.0 - 70.5 MHz) were notched down to 55 dBµV. This coming standard will again help to stabilize the situation of PLC coexistence and at least to keep the amateur spectrum clean.

Update of ICNIRPcalc - now Version 1.3

ICNIRPcalc is arround for a while. You can calculate the distance persons need to stay clear from a given antenna, so European exposure limits are not exceeded. The new Version has no changes in the program itself, just the antenna database was enlarged. Download here.

EMC WG Membership List Update

Below you will find the membership list of IARU Region 1 EMC WG. Please check carefully and forward any corrections to This email address is being protected from spambots. You need JavaScript enabled to view it.. If your society is not listed please indicate a contact person for the workgroup. Thank you very much.

EMC WG Membership List

HOD =  Head of Delegation = Represents voice of society

Chairman

Thilo Kootz

DL9KCE

Germany (HOD)

tkootz_at_gmx.de

Member

Christian Verholt

OZ8CY

Denmark (HOD)

cmv_at_verholt.dk

Member

Mike Zwingl

OE3MZC

Austria (HOD)

oe3mzc_at_oevsv.at

Member

Tore A. Worren

LA9QL

Norway (HOD)

toreart_at_online.no

Member

Koos Fockens

PA0KDF

Netherlands (HOD)

pa0kdf_at_amsat.org

Member

Hilary Claytonsmith

G4JKS

UK (HOD)

g4jks_at_btinternet.com

Member

Peter Frey

HB9MQM

Switzerland (HOD)

iaru_at_uska.ch

Member

Marek Bury

SP1JNY

Poland (HOD)

sp1jny_at_wp.pl

Member

Henri Chanforan

F6FHV

France (HOD)    

f6fhv_at_r-e-f.org

Member

Sæmundur E. Þorsteinsson  

TF3UA

Iceland (HOD)  

saemi_at_ieee.org

Member

Juan M. Chazarra 

EA5RS

Spain (HOD)

ea5rs_at_ono.com

Member 

Brandan Minish

EI6IZ

Ireland (HOD)

ei6iz.brendan_at_gmail.com

Member

José Francisco de Almeida

CT4AN

Portugal (HOD)

rep-cem_at_rep.pt

Member

John Pink

G8MM

Germany

john_pink_at_lineone.net

Member

Petter Gärdin

SM3PXO

Sweden (HOD)

sm3pxo_at_ssa.se

Member

Armand Erpelding

LX1MA

Luxembourg (HOD)

armerpel_at_pt.lu

Member

Milan Prouza

OK1FYA

Czech Republic (HOD)

prouza_at_attplus.cz

Member

Marko Wirtanen

OH8WM

Finland (HOD)

oh8wm_at_sral.fi

Member

Hans van den Groenendaal

ZS6AKV

South Africa (HOD)

hans_at_intekom.co.za

Member Emanuele D'Andria I0ELE Italy (HOD) emanuele.dandria_at_amsat.it
Member Roger Vermet ON6WU Belgium (HOD)

ON6WU_at_uba.be

Member Heinrich Häberlin HB9AZO Switzerland hb9azo_at_uska.ch

Standard for photovoltaic inverters provides relief

 

The CISPR 11 standard with the catchy title "Industrial, scientific and medical equipment - Radio disturbance characteristics - Limits and methods of measurement" covers power electronic devices such as solar inverters. Although there were voltage limits for conducted emissions at the mains port in the past, limits for the connections to the solar cells were missing.

After a positive vote of the international standard bodies, CISPR 11 Ed.6.0 is about to appear officially. In this new version limits finally apply (74 dBuV between 500 kHz and 30 MHz) for the DC terminals, in particular for systems up to 20 kVA in residential environments (Class B).

Through intensive work of the IARU in the standardization bodies during the last 5 years this goal has now finally been achieved. "But the work in terms of photovoltaic does not end here," said Thilo Kootz, DL9KCE, EMC Coordinator of IARU. “The limits are currently being validated by checking the emissions of installations in a computer model. It is possible that limits will be readjusted after this validation phase. With the current limit, however, a reasonable protection for shortwave reception has already been achieved."

Chair, IARU Region 1 EMC Committee

 

Christian Verholt, OZ8CY, has decided to stand down from his role as Chairman of the IARU Region 1 EMC Committee. Christian has held this role for 22 years and I would like to place on record IARU's gratitude to him for all his work over that extended period. We wish him well for the future.

As a result of this change, the Region 1 Executive Committee has decided to appoint Thilo Kootz, DL9KCE, as Chairman of the IARU Region 1 EMC Committee. Thilo is currently Vice-Chairman of the Committee.

Thilo is also Chairman of the Region 1 Political Relations Committee and an announcement about the leadership of that Committee will be made in due course.

These changes are effective immediately.

Don Beattie, G3BJ
President, IARU Region 1