Standards
EU standard EN50081-1
As/NZ standard 4251.1
Electromagnetic compatibility - Generic emission standard Part 1: Residential, commercial and light industry
This standard for emission requirements applies to electrical and electronic apparatus intended for use in the residential, commercial and light-industrial environment for which no dedicated product or product-family emission standard exists. Apparatus designed to radiate electromagnetic energy for radio communications purposes is excluded from this standard.
Where a relevant dedicated product or product-family EMC emission standard exists, this shall take precedence over all aspects of this generic standard.
Apparatus installed in the locations covered by this standard are considered to be directly connected to low-voltage public mains supplies or to a dedicated DC source which is intended to interface between the apparatus and the low-voltage public mains supply. Apparatus intended to be connected to an industrial power network or to special power supply sources are covered by EN50081-2 generic standard.
Radiated:
Refers to EN55022 class B for test technique. This requires the use of a broadband antenna to measure the level of RF energy radiated from the product into ‘space’. Ideally an Open Area Test Site (OATS) or equivalent should be used. Uncalibrated test sites will require the use of an ERS to quantify test site distortion. Frequency range 30MHz to 1000MHz.Conducted:
Refers to EN55022 class B for test technique, unless discontinuous interference present, in which case EN55014 applies. The RF conducted back down the mains lead is measured preferably with a LISN (Line Impedance Stabilisation Network), or alternatively with a voltage probe if a LISN is not suitable, and from other terminals with a voltage probe. Frequency range 150KHz to 30MHz.The signals from the antenna, LISN or voltage probe are all analysed in a CISPR16 EMC analyser.
The complete basic kit to cover both radiated and conducted emissions measurement in accordance with the standard, including a 16A single phase LISN and RF200 broadband antenna and ERS (emissions reference source to calibrate the test site. ...RFG-4BC
A comprehensive range of alternative LISNs for up to 150A rating and 3 phases are available. If applicable, a voltage probe can be supplied in place of the LISN. ...RFG-5BC
Recommended option: RF910 pre-selector. Essential if the EUT generates broadband noise or ‘clicks’ (e.g. variable speed motors, motors with commutators, power controllers, phase angle controllers) ...add -R
RF200 broadband antenna
ERS
LISN
Voltage probe (PLIP)
RF910 automatic pre-selector
RF800 Band B filter
Help in the selection of the appropriate measurement techniques and automatic display of the relevant limit levels are standard features in the software provided with all Laplace EMC analysers.
Note The above is for guidance only. Refer to the published standard for definitive details, exclusions and exceptions and detailed test technique.
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LAPLACE INSTRUMENTS LTD |
Tel: + 44 (0)1263 515160 Fax: + 44 (0)1263 512532 E-mail:tech@laplace.co.uk |
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