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Chinese Standard Sharing: Part 3: Electromagnetic compatibility (EMC

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  • Chinese Standard Sharing: Part 3: Electromagnetic compatibility (EMC

    This article is automatically translated by google translate, just for reference.
    Chinese version PDF please CLICK HERE.
    Low voltage DC power

    Part 3: Electromagnetic compatibility(EMC)

    GB This section 21560 specifies the power level does not exceed 30 kW,an input AC or DC input voltage is not more than 660 V,the DC output voltage does not exceed 250 V power source of various means(PSU)of the electromagnetic compatibility(EMC)requirements.
    Power supply means operate independently, or other devices installed in adequate electrical and mechanical protection are -
    for some special industrial applications (e.g. chemical and metallurgical) power supply apparatus used, there may be other products EMC standards. At this time, perform this section may also perform those products EMC standards ^
    many of the power supply apparatus is as relating to different EMC used part of a large apparatus standards, following a) and b)show power classification and EMC scope standards. A detailed breakdown of the power supply, see Appendix A.
    1. Expected power (a separate instrument)independent
    This section applies to the power supply means as a unit and having a direct function of development, especially in a separate unit on the market
    1. "Component supply be divided into two operation:
    • the power supply member regarded as of the instrument
    Present part deemed suitable instrument (e.g., intended for the facility or sold to the public) part of the power supply device,which EMC by the instrument equirements considered for use without additional prepended EMC tests. this does not include a maintenance spares sales the power supply device, which has been carried out as a member of the test machine
    • "Is intended for professional assembly / installer component supply
    section applicable to this kind of power, but help to meet different standards for the relevant end product EMC requirements. such parts supply is expected. these products may be sold by the end of tantalum professional installation personnel who install terminal products to professional assemblers, or delivered to wholesale markets. in both cases, the user of the end product is not only to fulfill its own responsibilities. after assembly further assumed that EMC tests
    Note:the power supply device member people end product, emission value Can be changed (e.g. due to changes in the ground conditions).
    Purpose of this section is to define the power supply EMC and test methods for limits device,comprising one thousand possible interference to other electronic devices (e.g., a radio receiver, a measuring device and a computer apparatus) electromagnetic emission limits, and a continuous, transient conduction disturbance and radiated disturbances (including electrostatic discharge) immunity electromagnetic limits.
    this part of the predetermined minimum power supply device EMC requirements.
    comply with this section, no require additional EMC tests, nor beyond the portion of the necessary.


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