請教一下功率因數標準
請問一下那位大俠知道AC/DC開關電源多大功率需要加上功率因數校正,需要達到百分之多少?我所知道的是7,80W以上的需要PFC,但是不確切.好像EN61000-3-2規定也一直在更改!!
請教一下功率因數標準
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@woshizainiao
那四類電器?~~~我手里的電源是用在工控上的,總的功率84W,不知道ken兄是否知道它的功率因數要求啊??我手里也沒有相應的標準~~~~
standard
for the purpose of harmonic lititation, equipment is classcified as follows:
Class A:balanced three-phase equipment and all others, except that stated in one of the following classes.
Class B:portable tools. arc welding equipment which is not professinal
Class C: lighting equipment including dimming devices
Class D:equipment having an input current with a "special wave shape" as defined in figure 1 and an active input power, P<=600W, measured under the test conditions given in the relevant clauses of annex C
for the purpose of harmonic lititation, equipment is classcified as follows:
Class A:balanced three-phase equipment and all others, except that stated in one of the following classes.
Class B:portable tools. arc welding equipment which is not professinal
Class C: lighting equipment including dimming devices
Class D:equipment having an input current with a "special wave shape" as defined in figure 1 and an active input power, P<=600W, measured under the test conditions given in the relevant clauses of annex C
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@窮則思變
standardforthepurposeofharmoniclititation,equipmentisclasscifiedasfollows:ClassA:balancedthree-phaseequipmentandallothers,exceptthatstatedinoneofthefollowingclasses.ClassB:portabletools.arcweldingequipmentwhichisnotprofessinalClassC:lightingequipmentincludingdimmingdevicesClassD:equipmenthavinganinputcurrentwitha"specialwaveshape"asdefinedinfigure1andanactiveinputpower,P
多謝KEN兄,不過不好意思,CLASS D小弟沒有看懂~~~
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