Siemens EK 726 Series Manual de servicio descargar pdf (Pagina 11)

INTRODUCTION

MICROMASTER

MICROMASTER Vector

MIDIMASTER Vector

SIEMENS DA 64 – 2002/2003

1/5 Version D

1.3.3 Limit values for harmonic currents in non-industrial² applications EN 61000-3-2

Since the 1

of January 2001, all electrical equipment, which fall under the EMC Directive must fulfill the

regulations laid down in EN 61000-3-2 "Limit values for harmonic currents (drive units with input currents <= 16 A

per phase)". All of the Siemens MICROMASTER, MIDIMASTER, MICROMASTER Eco and COMBIMASTER

variable-speed drives, which are classified according to the Standard as devices for "Professional applications"

fulfill the requirements laid down in the Standard.

For drives with 250 W to 550 W and 230 V 1-phase power supplies, which are used in non-industrial applications,

then it is necessary to obtain authorization from the power supply company [power utility company] to connect the

units to the public line supply.

More detailed information on this subject is provided in EN 61000- 3-12, Sections 5.3 and 6.4.

Drive units in this voltage and output range are supplied with the appropriate warning information and labels:

The harmonic currents generated by these products are specified in the table below:

Nominal value Typical Typical Typical voltage distortion

harmonic current harmonic current Nominal values, distribution

transformer

(A) (%) 10 kVA 100 kVA 1 MVA

3. 5. 7. 9. 11. 3. 5. 7. 9. 11. THD (%) THD (%) THD (%)

250W / 230V /

1AC

2.15 1.44 0.72 0.26 0.19 83 56 28 10 7 0.77 0.077 0.008

370W / 230V /

1AC

2.96 2.02 1.05 0.38 0.24 83 56 28 10 7 1.1 0.11 0.011

550W / 230V /

1AC

4.04 2.70 1.36 0.48 0.36 83 56 28 10 7 1.5 0.15 0.015

Table 3: EMC conformance in non-industrial applications

The permissible harmonic currents for “Drive units for professional applications” with an input power > of 1 kW have

still not been defined. This means that all of the electrical equipment, which contain the drives listed above, and

which have input powers >1 kW, do not require authorization before being connected to the line supply. Alternatively,

by installing the input reactors, recommended in the "Options" Section, means that it is not necessary to apply for

authorization to connect the unit to the line supply (drive units with 550 W 230V AC 1 phase are an exception to this

rule).

² Industrial line supplies are those supplies which are not used to supply residential buildings.

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Siemens EK 726 Series Manual de servicio Pagina 11