W o r k i n g O n B e t t e r S o l u t i o n s 1

Chroma T&M BU Product & Marketing Div. ~ 周晏加 ~

Limits for harmonic current emissionsLimits for harmonic current emissions(equipment input current <=16A per phase)(equipment input current <=16A per phase)

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• Background and History• Test instruments• Classification of equipment• Test methods• Test instruments• Limits• Test conditions

OUTLINE

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BackgroundBackground

Too much Harmonic Current pollute Main power

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IEC 555-2 ( ~1/1/2001)IEC 555-2 ( ~1/1/2001)

HistoryHistory

IEC 61000-3-2:IEC 61000-3-2:1995 (1/1/2001 ~1/1/2004)1995 (1/1/2001 ~1/1/2004) IEC 61000-3-2 A14 IEC 61000-3-2 A14 (1/1/2001 ~ )(1/1/2001 ~ )

GGB17625.1-1998 B17625.1-1998 中國中國 33CC 認證項目 認證項目 (1/5/2002 (1/5/2002 開始開始 , 1/5/2003, 1/5/2003 強制 強制 ))

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Chroma Solution for IEC61000-3-2Chroma Solution for IEC61000-3-2

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Voltage accuracy : 2.0 % or better

Frequency accuracy : 0.5 % or better

Power Capacity : 230V x 16A = 3680VA

Voltage Harmonic distortion (With EUT connected): 0.9 % for harmonic of order 3 0.4 % for harmonic of order 5 0.3 % for harmonic of order 7 0.2 % for harmonic of order 9 0.2 % for even harmonic of order from 2 to 10 0.1 % for harmonic of order 11 to 40

AAC Power RequirementsC Power Requirements

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ZZs and Zm are not specified. But have to be s and Zm are not specified. But have to be low to suit the test requirements.low to suit the test requirements.

AC source, Meter and Cable must good.AC source, Meter and Cable must good.

G

Zs

Zm

EUTAC source

Meter

Equipment

AAC Power RequirementsC Power Requirements

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Chroma Programmable AC Source Spec. :

Voltage accuracy : 0.2 % + 0.2 %F.S < 2%

Frequency accuracy : 0.15 % < 0.5%

Power Capacity : For different EUT

For each test, Check Voltage Harmonic Distortion

Model 6560 (6KVA), Model 61505 (4KVA)Model 6560 (6KVA), Model 61505 (4KVA)

Chroma Programmable AC SourceChroma Programmable AC Source

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•Total error in steady-state mode : Shall not exceed 5% of permissible limit or 0.2 % of rated current of EUT

•Maximum relative deviation between f1 and synchronise frequency : Equal to or lower than 0.03 % of f1

•Attenuation of anti-aliasing filter : 50 dB at least

Chroma Power Analyzer 6630Chroma Power Analyzer 6630

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Balancethree-phaseequipment

Y

N

Equipmenthaving special

wave shape andP <= 600 W

Y

N

Lightingequipment Y

N

Portabletools Y

N

N

Class B

*Motordriven

Class C

* Input power > 25W

Class D

* Input power > 75W

Class A

N

Y

IEC 61000-3-2 IEC 61000-3-2 Classification

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Classification A

0.35

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Classification D

0.35

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Class A

Harmonic order

n

Maximum permissibleharmonic current

A

Odd harmonics

Even harmonics

3

5

7

9

11

13

15<= n <=39

2

4

6

8<= n <= 40

2.30

1.14

0.77

0.40

0.33

0.21

0.15 x 15/n

1.08

0.43

0.30

0.23 x 8/n

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Class B, C

Class B : 1.5 times of class A limits

Class C :

Harmonic order

n

Maximum permissible harmonic current expressed as percentage of the input current at the fundamental

frequency%

Odd harmonics only

2

3

5

7

9

11<= n <=39

2

30‧ *

10

7

5

3

* is the circuit power factor

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Class D

Harmonic order

n

Maximum permissible harmonic current per

wattmA/W

Odd harmonics only

3

5

7

9

11

13<= n <=39

3.4

1.9

1.0

0.5

0.35

3.85/n

Maximum perm-issible harmonic

current (A)

2.30

1.14

0.77

0.40

0.33

See class A

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Transitory state

Measure every 16 cycles of fundamental frequency for 2.5 mins

Smoothing the harmonic components by LPF having time constant of 1.5S +- 10%

i

i

16 cycles

2.5 min

Smoothing

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Transitory state

For harmonic order 3-19 and 2-10, if1. T<10% of observation period (15 sec) and2. none of the waveform over 1.5 times limits

It will be considered as pass the limits

2.5 min (150s)

i

Limit

1.5 x Limit

T

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Amendment 14

1. Classification:

Only PC, PC monitor or TV receiver are class D.

1. Measuring time

2. Transitory state