請教一下功率因數(shù)標(biāo)準(zhǔn)

請教一下功率因數(shù)標(biāo)準(zhǔn)
請問一下那位大俠知道AC/DC開關(guān)電源多大功率需要加上功率因數(shù)校正,需要達(dá)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(guī)定也一直在更改!!

全部回復(fù)(6)

只看樓主

正序查看

倒序查看

woshizainiao

LV.2

2004-03-29 11:06

沒人回我的貼子~~~~
..

回復(fù)

窮則思變

LV.6

2004-03-30 18:56

我不知道最新的版本
根據(jù)你所提到的標(biāo)準(zhǔn),它規(guī)定了四類電器,所以你應(yīng)該具體情況具體對待.你有你提到的標(biāo)準(zhǔn)嗎?就照著標(biāo)準(zhǔn)做就好了

回復(fù)

woshizainiao

LV.2

2004-03-31 16:16

@窮則思變

我不知道最新的版本根據(jù)你所提到的標(biāo)準(zhǔn),它規(guī)定了四類電器,所以你應(yīng)該具體情況具體對待.你有你提到的標(biāo)準(zhǔn)嗎?就照著標(biāo)準(zhǔn)做就好了

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(shù)要求啊??我手里也沒有相應(yīng)的標(biāo)準(zhǔn)~~~~

回復(fù)

窮則思變

LV.6

2004-04-01 08:26

@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(shù)要求啊??我手里也沒有相應(yīng)的標(biāo)準(zhǔn)~~~~

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

回復(fù)

woshizainiao

LV.2

2004-04-01 14:32

@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~~~
..

回復(fù)