Surge相关测试标准和设备.ppt

1、,Surge相關測試標準和設備,Surge的產生及要素 Surge的相關標準 a . ANSI.C/IEEE62.41 b. FCC Part 68 c. IEC 61000-4-5 d . UL 1449 具體標準中的surge要求 儀器和能做的測試匯總,Surge的產生及要素,IEC61000-4-5: Definition-A transient wave of electrical current,voltage,or power propagating along a line or a circuit and characterized by a rapid increase fo

2、llowed by a slower decrease. Switching transients a) major power system switching disturbances, such an capacitor bank switching; b) minor switching activity near the instrumentation or load changes in the power distribution system; c) resonating circuits associated with switching devices, such as t

3、hyristors; d) various system fault Lighting transients: a) direct lighting stroke - inject b) indirect lighting stroke -induce c) lighting earth current flow common earth path discharge,ANSI/IEEE C.62.41 Definition a transient wave of current ,potential,or power in an electric circuit. 1.Lightning 2

4、.Switching transients Surge Characteristics Waveform characteristics: amplitude ,duration ,rise time ,frequency of ringing ,polarity ,energy delivery capability ,amplitude spectral density , position with respect to the phase of mains waveform ,frequency of occurrence.,ANSI /IEEE C.62.41,1.Waveform

5、Ring wave High energy surges Fast transients 2.Location Categories a)outlets and long branch circuits,more than 10m from B,more than 20m from C b)Feeders and short branch circuits;distributions panel devices;bus and feeder industrial plants. c)outside and service entrance ,run between meter and pane

6、l,overhead line to detached building,underground line to well pump,Waveform for location A,B,C,0.5s/ 100k Ring Wave Rise time :0.5s 0.15 s Ringing frequency:100kHz 20kHz,Ratio of second peak to first peak is between 40% and 110%,third to second,fourth to third between 40% and 80%. Rise time 10%90% F

7、irst peak of OCV,SCC is selected ,tolerance 10% Vp/Ip- 30 8 for location A, 12 3 for B No short-circuit current waveform is specified. 1.2/50 s-8/20 s Combination wave OCV-Front time :1.2 s 0.36 s(1.67(t90%-t30%) ,Duration :50 s 10 s (t50%-t50%),SCCfront time 8 s (+1.0,-2.5) s (1.25(t90%-t30%) Durat

8、ion:20 s (+8,-4) s (t50%-t50%) Source impedance 2.0 0.25 Traditionally test on the insulation.,Additional surge test waveform EFT-rise time 5ns 1.5ns,duration 50ns 15ns In a burst during 15ms 3ms Period of repeated bursts is 300ms 60ms For peaks 2kV:5kHz 1kHz;for peaks2kV:2.5kHz 0.5kHz Amplitude def

9、ined by 50 source impedance between 1MHz100MHz 10/1000 s wave OCV:front time 10 s (+0,-5) s ,duration1000 s (+1000,-0) s SCC:front time 10 s (+0,-5) s ,duration1000 s 200 s Residential None Source impedance Commercial 1.0 Upk 1.0 Industrial 1.3 Upk 0.25 5kHz Ring wave Rise time :1.5 s 0.5 s ,frequen

10、cy:5kHz 1kHz Ratio of adjacent peak :60%80% Source impedance 5 2 ,Low None Source impedance Medium 1.0 Upk 1 to 5 High 1.8 Upk 0.5 to 1,IEC61000-4-5 Definitions: front time virtual parameter Voltage 1.67*(30%90%) Current 1.25*(10%90%) Rise time 10%90% Combination wave 1.2/50s-8/20s,effective output

11、impedance of 2 OCV:0.5kV4.0kV Tolerance10% SCC:0.25kA2kA Tolerance10% Polarity: positive/negative Phase shifting 0360 versus ac phase angle Repetition at least 1 per min,10/700 s OCV:0.5kV4.0kV Tolerance10% SCC:12.5A100A Tolerance10% Polarity: positive/negative Phase shifting 0360 versus ac phase an

12、gle Repetition at least 1 per min,Capacitive: couple capacitors 9F or 18F Decoupling inductance L=1.5mH Interconnection line Capacitive: couple capacitors 0.5F Decoupling inductance L=20mH,FCC Part68 68.302 Environment Simulation. Metallic voltage surge: 800V,10-s maximum rise time/560-s minimum dec

13、ay time, between (1)tip and ring of a 2-wire connection;(2)tip and ring ,tip1 and ring 1 of a 4-wire connection;(3)tip and tip1;(4)other pair peak current must not be limited to 100A Longitudinal voltage surge: 1500V, 10-s maximum rise time/160-s minimum decay time between each lead (tip ring tip1 r

14、ing1 M) and 1) earth, 2) leads peak current must not be limited to 200A 1500V, 10-s maximum rise time/160-s minimum decay time between pairs of connection other than tip and ring; peak current must not be limited to 200A 2500V *3, 2-s maximum rise time/10-s minimum decay time between L and N of ac p

15、ower line peak current must not be limited to 1000A,Ul1449 floating output measuring equipment: oscilloscope ,current monitor ,high voltage probe check the waveform: SCC: amplitude tolerance:+10% Duration time(50%50%) 1628s, rise time 1.25*(10%90%) 5.59s OCV: amplitude tolerance:+10%,-5% Duration ti

16、me(50%50%) 4060s, rise time 1.67*(30%90%)0.841.56s,EN55014-2中surge不需要從低到高都打,做 surge的儀器 EMC Pro,E Cat,CE Master,Ecat: E505A- FCC Part 68 Telecom 10s 0-2.5kV,1kA max E502B- CCITT Rec K.17.20.21 10/700s OCV with two 25 outputs for true three-terminal surging of lines connected between instrument and telecom equipment .Also include a 0 output for use of with external coupler / decouplers for multi-line system. Additional 0.5/700s OCV wave