EMCP Software in accordance with EN 61000-3-2 published 1995 and EN 61000-3-2 plus A14 published January 2001

HARCS Software in accordance with EN 61000-3-2 published 1995 and EN 61000-3-2 plus A14 published January 2001

Industry has been lobbying for a long time for publication of essential changes to EN 61000-3-2 which gives a presumption of conformity to EMC directive. Under "Common modification on EN A14:2000 the standard has been published in the OJEC reference C 359 and OJEC date 2000-12-14. With this publication, it is ensured that from the first of January 2001 the relevant products will have the possibility of choice to benefit from the presumption of conformity to the essential requirements of the EMC directive by complying either with the specification laid down in the EN, or those of the EN as modified by its amendment 14 and this up to the first of January 2004. After this date only the latter configuration will apply. This will be welcomed by many industrial circles and manufacturer associations

Some differences between the two test method are listed below:

EN 61000-3-2 (IEC 61000-3-2)	EN 61000-3-2 plus A14

1) Classes	1) Classes
A Balance three phase equipment	A Balanced three phase equipment Household appliances excluding equipment identified as Class D Tools excluding portable tools Dimmers for incandescent lamps Audio equipment
B portable tools	B no change
C Lighting equipment including dimming devices	C no change
D Special wave shape P< 600 W	D P<600 W Personal computers and personal computer monitors, Television receivers
EMCP HAR1000 System	EMCP HAR1000 System A14

EN 61000-3-2 (IEC 61000-3-2)	EN 61000-3-2 plus A14

2) Measurement procedure	2) Measurement procedure
Steady state Transitory state with sliding windows	Calculate the arithmetic average of the measured values from DFT time windows over the entire observation period
If the harmonic components of the measured current vary so as to potentially exceed the limit 1.5 s smoothing filter should be used.	For each DFT time windows the 1.5 s smoothed r.m.s current is used

EN 61000-3-2 (IEC 61000-3-2)	EN 61000-3-2 plus A14

3) Application of limits	3) Application of limits
The limits are applicable to steady-state harmonic current measured according to annexes A,B, C (100 % limits)	The average value for the individual harmonics currents shall be less than or equal the applicable limits (100 % limits)
For transitory even harmonic current of the order from 2 to 10 and transitory odd harmonic current order from 3 to 19, values up to 1.5 times the limits in tables 1 to 3 are allowed for each harmonic during a maximum of 10% of any observation period of 2.5 min. (150 % limits)	For each harmonic order, all 1.5 s smoothed current values shall be less than or equal to 150% of the applicable limits For the 21^st and higher odd harmonics, the average values obtained for each individual odd harmonic over the full observation period may exceed the applicable limits by 50% (150 % limits)
EMCP HAR1000 System	EMCP HAR1000 System A14


In this example the order 12 and 13 are failed where as with the A14 measurement the order 12 and 13 are not failed. Actual Software can be downloaded from EMCP Web site.	The HARCS software version 2.02 does not interpret the measuring results below the 21^st with limits correct The HARCS software version 2.03 interpret the measuring results correct, see graph above.

EN 61000-3-2 (IEC 61000-3-2)	EN 61000-3-2 plus A14

4) Observation time	4) Observation time
Not specified	New chapter 6.2.4 Observation periods (Tobs) for four different types of equipment behaviour are considered and described in a table

EN 61000-3-2 (IEC 61000-3-2)	EN 61000-3-2 plus A14

5) Limits for class C equipment	5) Limits for class C equipment
No limits apply to self blasted lamps and semi-luminaires for input power <25 W	Specify limits for : Active power > 25 W Active input power < 25 W

EN 61000-3-2 (IEC 61000-3-2)	EN 61000-3-2 plus A14

6) Power measurement	6) Power measurement
The mean value, taken over one period, of the instantaneous power (not clear defined whether smoothed or not)	Calculation of limits measure the 1.5 s smoothed active input power in each DFT time windows The value for power found by measurement during emission tests, shall not be less than 90% nor greater than 110% of the power specified by the manufacturer in the test report. In the event that the measured value is outside of this tolerance band, the measured power shall be used to establish the limits.
EMCP HAR1000 System	EMCP HAR1000 System A14
	Actual power or manufacturer specified power measurement can be carried out.

EN 61000-3-2 (IEC 61000-3-2)	EN 61000-3-2 plus A14

7) Protocol	7) Protocol
EMCP HAR1000 System	EMCP HAR1000 System A14
Max harmonic current must be < 150% Sliding windows turns 9,11, 13 after some time to failed. One failed order will not turn to passed later during the test time.	Max harmonic current must be < 150% Average limits < 100% for <21 harmonics Average for > 21 odd harmonic < 150% One average failed order at the beginning of the test can turn to passed