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每500伏特的安全距離為1MM左右呢？

平常打高壓，是否可以這么理解，每500伏特的安全距離為1MM左右呢？初級對地爬電距離3MM，空間距離1.5MM呢？是否正確。
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2010-11-20 22:47

 

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2010-11-20 22:56
@隱形專家
[圖片] 

一、安全間距

1.  LN之間3mm以上，空間距離1.8mm以上，不足時開1mm以上的槽增加沿面距離。

2. 初次級間6.4mm以上，空間距離5mm以上，不足時開1mm以上的槽增加沿面距離。

3. 初級與外殼地4.5mm以上，空間距離3mm以上，不足時開1mm以上的槽增加沿面距離。

4．高壓與地之間銅箔距離1mm以上，其它無要求銅箔間距離0.5mm以上。

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2010-11-20 23:00
@wuzhonggui
一、安全間距1. LN之間3mm以上，空間距離1.8mm以上，不足時開1mm以上的槽增加沿面距離。2.初次級間6.4mm以上，空間距離5mm以上，不足時開1mm以上的槽增加沿面距離。3.初級與外殼地4.5mm以上，空間距離3mm以上，不足時開1mm以上的槽增加沿面距離。4．高壓與地之間銅箔距離1mm以上，其它無要求銅箔間距離0.5mm以上。

 

這是IEC-60950的空間和爬電距離要求：

附表2J – AC交流電源瞬間電壓（摘錄標準表2J）
AC main supply voltage up to and including a Mains transient voltage Vpeak b
Overvoltage category
Vr.m.s I II
50 330 550
100 500 800
150 c 800 1500
300 d 1500 2500
600 e 2500 4000
a    For equipment designed to be connected to a three-phase, three-wire supply, where there is no neutral conductor, the AC MAINS SUPPLY voltage is the line-to-line voltage. In all other cases, where there is a neutral conductor, it is the line-to-neutral voltage.
b   The MAINS TRANSIENT VOLTAGE is always one of the values in the table. Interpolation is not permitted.
c   Including 120/208 V and 120/240 V.
d   Including 230/400 V and 277/480 V.
e   Including 400/690 V.
In general,CLEARANCES in equipment intended to be connected to the AC MAINS SUPPLY shall be designed for Overvoltage Category II.
如果所測的工作電壓峰值超過下表規(guī)格時，上述空間距離的值需增加下表所列的對應(yīng)值
附表2K – 一次電路以及一次電路與二次電路之間的最小電氣絕緣（摘錄標準表2K）
　 　 　 　 　 　 　 　 　 　 　 　 　 Unit:mm
Peaking working voltage
 up to and including,
V		 Mains transient voltage
1500 2500 4000
Pollution degree
1 and 2 3 1 and 2 3 1, 2 and 3
F B/S R F B/S R F B/S R F B/S R F B/S R
71 0.4 1 2 0.8 1.3 2.6 1 2 4 1.3 2 4 2 3.2 6.4
210 0.5 1 2 0.8 1.3 2.6 1.4 2 4 1.5 2 4 2 3.2 6.4
420 F 1.5  B/S 2.0  R 4.0 2.5 3.2 6.4
840 F 3.0  B/S 3.2  R 6.4 
The values in the table are applicable to FUNCTIONAL INSULATION (F) if required by 5.3.4 a) (see 2.10.1.3), BASIC
INSULATION (B), SUPPLEMENTARY INSULATION (S) and REINFORCED INSULATION (R).
If the peak working voltages exceeds the peak voltage of the AC main supply voltage, linear interpolation is permitted between the nearest two points, the calculated minimum clearance being rounded up to the next higher 0.1 mm increment.
附表2L– 次電路中的附加間隙（摘錄標準表2L）
　 　 　 　 　 　 　 　 　 　 　 　 　 Unit:mm
Mains transient voltage
1500V 2500V
Pollution degree 1 and 2 Pollution 3 Functional basic or supplementary insulation Reinforced insulation Pollution degree 1, 2 and 3 Functional basic or supplementary insulation Reinforced insulation
Peak working voltage up to and including,
 V		 Peak working voltage up to and including V
210 210 0 0 420 0 0
298 294 0.1 0.2 493 0.1 0.2
386 379 0.2 0.4 567 0.2 0.4
474 463 0.3 0.6 640 0.3 0.6
562 547 0.4 0.8 713 0.4 0.8
For voltages above the peak working voltage values given in the table, liner extrapolation is permitted.
附表2N – 最小爬電距離（摘錄標準表2N）
　 　 　 　 　 　 　 　 　 　 　 　 　 Unit:mm
RMS working voltage up to and including ,
V		 Pollution degree
1 2 1 2 3
Material group
Printed boards Other materials
I, II, IIIa, IIIb I, II, IIIa I, II, IIIa, IIIb I II IIIa, IIIb I II IIIa, IIIb
10 0.025 0.04 0.08 0.4 0.4 0.4 1 1 1
12.5 0.025 0.04 0.09 0.42 0.42 0.42 1.05 1.05 1.05
16 0.025 0.04 0.1 0.45 0.45 0.45 1.1 1.1 1.1
20 0.025 0.04 0.11 0.48 0.48 0.48 1.2 1.2 1.2
25 0.025 0.04 0.125 0.5 0.5 0.5 1.25 1.25 1.25
32 0.025 0.04 0.14 0.53 0.53 0.53 1.3 1.3 1.3
40 0.025 0.04 0.16 0.56 0.8 1.1 1.4 1.6 1.8
50 0.025 0.04 0.18 0.6 0.85 1.2 1.5 1.7 1.9
63 0.04 0.063 0.2 0.63 0.9 1.25 1.6 1.8 2
80 0.063 0.1 0.22 0.67 0.9 1.3 1.7 1.9 2.1
100 0.1 0.16 0.25 0.71 1 1.4 1.8 2 2.2
125 0.16 0.25 0.28 0.75 1.05 1.5 1.9 2.1 2.4
160 0.25 0.4 0.32 0.8 1.1 1.6 2 2.2 2.5
200 0.4 0.63 0.42 1 1.4 2 2.5 2.8 3.2
250 0.56 1 0.56 1.25 1.8 2.5 3.2 3.6 4
320 0.75 1.6 0.75 1.6 2.2 3.2 4 4.5 5
400 1 2 1 2 2.8 4 5 5.6 6.3
500 1.3 2.5 1.3 2.5 3.6 5 6.3 7.1 8
Linear interpolation is permitted between the nearest two points, the calculated spacing being rounded to the next higher 0.1 mm increment. For reinforced insulation, the calculated value for basic insulation shall be doubled first before applying the rounding off.
我司產(chǎn)品一般使用“污染等級2，材料組別：IIIa或IIIb”
如果從表2N查得的爬電距離小于從表2K或2L或表2M（適用時）查的相應(yīng)的電氣間隙，則應(yīng)采用所查得的該電氣間隙值作為最小爬電距離的數(shù)值
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ppfc_ctr
LV.6
5
2010-11-20 23:02
@wuzhonggui
 這是IEC-60950的空間和爬電距離要求：附表2J–AC交流電源瞬間電壓（摘錄標準表2J）ACmainsupplyvoltageuptoandincludingaMainstransientvoltageVpeakbOvervoltagecategoryVr.m.sIII50330550100500800150c8001500300d15002500600e25004000a   Forequipmentdesignedtobeconnectedtoathree-phase,three-wiresupply,wherethereisnoneutralconductor,theACMAINSSUPPLYvoltageistheline-to-linevoltage.Inallothercases,wherethereisaneutralconductor,itistheline-to-neutralvoltage.b  TheMAINSTRANSIENTVOLTAGEisalwaysoneofthevaluesinthetable.Interpolationisnotpermitted.c  Including120/208Vand120/240V.d  Including230/400Vand277/480V.e  Including400/690V.Ingeneral,CLEARANCESinequipmentintendedtobeconnectedtotheACMAINSSUPPLYshallbedesignedforOvervoltageCategoryII.如果所測的工作電壓峰值超過下表規(guī)格時，上述空間距離的值需增加下表所列的對應(yīng)值附表2K–一次電路以及一次電路與二次電路之間的最小電氣絕緣（摘錄標準表2K）　　　　　　　　　　　　　Unit:mmPeakingworkingvoltage uptoandincluding,VMainstransientvoltage150025004000Pollutiondegree1and231and231,2and3FB/SRFB/SRFB/SRFB/SRFB/SR710.4120.81.32.61241.32423.26.42100.5120.81.32.61.4241.52423.26.4420F1.5 B/S2.0 R4.02.53.26.4840F3.0 B/S3.2 R6.4 ThevaluesinthetableareapplicabletoFUNCTIONALINSULATION(F)ifrequiredby5.3.4a)(see2.10.1.3),BASICINSULATION(B),SUPPLEMENTARYINSULATION(S)andREINFORCEDINSULATION(R).IfthepeakworkingvoltagesexceedsthepeakvoltageoftheACmainsupplyvoltage,linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedminimumclearancebeingroundeduptothenexthigher0.1mmincrement.附表2L–次電路中的附加間隙（摘錄標準表2L）　　　　　　　　　　　　　Unit:mmMainstransientvoltage1500V2500VPollutiondegree1and2Pollution3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPollutiondegree1,2and3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPeakworkingvoltageuptoandincluding, VPeakworkingvoltageuptoandincludingV21021000420002982940.10.24930.10.23863790.20.45670.20.44744630.30.66400.30.65625470.40.87130.40.8Forvoltagesabovethepeakworkingvoltagevaluesgiveninthetable,linerextrapolationispermitted.附表2N–最小爬電距離（摘錄標準表2N）　　　　　　　　　　　　　Unit:mmRMSworkingvoltageuptoandincluding,VPollutiondegree12123MaterialgroupPrintedboardsOthermaterialsI,II,IIIa,IIIbI,II,IIIaI,II,IIIa,IIIbIIIIIIa,IIIbIIIIIIa,IIIb100.0250.040.080.40.40.411112.50.0250.040.090.420.420.421.051.051.05160.0250.040.10.450.450.451.11.11.1200.0250.040.110.480.480.481.21.21.2250.0250.040.1250.50.50.51.251.251.25320.0250.040.140.530.530.531.31.31.3400.0250.040.160.560.81.11.41.61.8500.0250.040.180.60.851.21.51.71.9630.040.0630.20.630.91.251.61.82800.0630.10.220.670.91.31.71.92.11000.10.160.250.7111.41.822.21250.160.250.280.751.051.51.92.12.41600.250.40.320.81.11.622.22.52000.40.630.4211.422.52.83.22500.5610.561.251.82.53.23.643200.751.60.751.62.23.244.5540012122.8455.66.35001.32.51.32.53.656.37.18Linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedspacingbeingroundedtothenexthigher0.1mmincrement.Forreinforcedinsulation,thecalculatedvalueforbasicinsulationshallbedoubledfirstbeforeapplyingtheroundingoff.我司產(chǎn)品一般使用“污染等級2，材料組別：IIIa或IIIb”如果從表2N查得的爬電距離小于從表2K或2L或表2M（適用時）查的相應(yīng)的電氣間隙，則應(yīng)采用所查得的該電氣間隙值作為最小爬電距離的數(shù)值
IEC-60950的空間和爬電距離要求，資料很詳細，收了謝謝
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cheng111
LV.11
6
2010-11-21 02:10
@wuzhonggui
 這是IEC-60950的空間和爬電距離要求：附表2J–AC交流電源瞬間電壓（摘錄標準表2J）ACmainsupplyvoltageuptoandincludingaMainstransientvoltageVpeakbOvervoltagecategoryVr.m.sIII50330550100500800150c8001500300d15002500600e25004000a   Forequipmentdesignedtobeconnectedtoathree-phase,three-wiresupply,wherethereisnoneutralconductor,theACMAINSSUPPLYvoltageistheline-to-linevoltage.Inallothercases,wherethereisaneutralconductor,itistheline-to-neutralvoltage.b  TheMAINSTRANSIENTVOLTAGEisalwaysoneofthevaluesinthetable.Interpolationisnotpermitted.c  Including120/208Vand120/240V.d  Including230/400Vand277/480V.e  Including400/690V.Ingeneral,CLEARANCESinequipmentintendedtobeconnectedtotheACMAINSSUPPLYshallbedesignedforOvervoltageCategoryII.如果所測的工作電壓峰值超過下表規(guī)格時，上述空間距離的值需增加下表所列的對應(yīng)值附表2K–一次電路以及一次電路與二次電路之間的最小電氣絕緣（摘錄標準表2K）　　　　　　　　　　　　　Unit:mmPeakingworkingvoltage uptoandincluding,VMainstransientvoltage150025004000Pollutiondegree1and231and231,2and3FB/SRFB/SRFB/SRFB/SRFB/SR710.4120.81.32.61241.32423.26.42100.5120.81.32.61.4241.52423.26.4420F1.5 B/S2.0 R4.02.53.26.4840F3.0 B/S3.2 R6.4 ThevaluesinthetableareapplicabletoFUNCTIONALINSULATION(F)ifrequiredby5.3.4a)(see2.10.1.3),BASICINSULATION(B),SUPPLEMENTARYINSULATION(S)andREINFORCEDINSULATION(R).IfthepeakworkingvoltagesexceedsthepeakvoltageoftheACmainsupplyvoltage,linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedminimumclearancebeingroundeduptothenexthigher0.1mmincrement.附表2L–次電路中的附加間隙（摘錄標準表2L）　　　　　　　　　　　　　Unit:mmMainstransientvoltage1500V2500VPollutiondegree1and2Pollution3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPollutiondegree1,2and3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPeakworkingvoltageuptoandincluding, VPeakworkingvoltageuptoandincludingV21021000420002982940.10.24930.10.23863790.20.45670.20.44744630.30.66400.30.65625470.40.87130.40.8Forvoltagesabovethepeakworkingvoltagevaluesgiveninthetable,linerextrapolationispermitted.附表2N–最小爬電距離（摘錄標準表2N）　　　　　　　　　　　　　Unit:mmRMSworkingvoltageuptoandincluding,VPollutiondegree12123MaterialgroupPrintedboardsOthermaterialsI,II,IIIa,IIIbI,II,IIIaI,II,IIIa,IIIbIIIIIIa,IIIbIIIIIIa,IIIb100.0250.040.080.40.40.411112.50.0250.040.090.420.420.421.051.051.05160.0250.040.10.450.450.451.11.11.1200.0250.040.110.480.480.481.21.21.2250.0250.040.1250.50.50.51.251.251.25320.0250.040.140.530.530.531.31.31.3400.0250.040.160.560.81.11.41.61.8500.0250.040.180.60.851.21.51.71.9630.040.0630.20.630.91.251.61.82800.0630.10.220.670.91.31.71.92.11000.10.160.250.7111.41.822.21250.160.250.280.751.051.51.92.12.41600.250.40.320.81.11.622.22.52000.40.630.4211.422.52.83.22500.5610.561.251.82.53.23.643200.751.60.751.62.23.244.5540012122.8455.66.35001.32.51.32.53.656.37.18Linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedspacingbeingroundedtothenexthigher0.1mmincrement.Forreinforcedinsulation,thecalculatedvalueforbasicinsulationshallbedoubledfirstbeforeapplyingtheroundingoff.我司產(chǎn)品一般使用“污染等級2，材料組別：IIIa或IIIb”如果從表2N查得的爬電距離小于從表2K或2L或表2M（適用時）查的相應(yīng)的電氣間隙，則應(yīng)采用所查得的該電氣間隙值作為最小爬電距離的數(shù)值

專業(yè)....手下了

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yong168
LV.7
7
2010-11-21 09:16
@隱形專家
[圖片] 
學習了~~~~
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wzx123
LV.5
8
2010-11-21 13:54
@wuzhonggui
一、安全間距1. LN之間3mm以上，空間距離1.8mm以上，不足時開1mm以上的槽增加沿面距離。2.初次級間6.4mm以上，空間距離5mm以上，不足時開1mm以上的槽增加沿面距離。3.初級與外殼地4.5mm以上，空間距離3mm以上，不足時開1mm以上的槽增加沿面距離。4．高壓與地之間銅箔距離1mm以上，其它無要求銅箔間距離0.5mm以上。

學習一下，呵呵

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2010-11-21 13:55
@wuzhonggui
 這是IEC-60950的空間和爬電距離要求：附表2J–AC交流電源瞬間電壓（摘錄標準表2J）ACmainsupplyvoltageuptoandincludingaMainstransientvoltageVpeakbOvervoltagecategoryVr.m.sIII50330550100500800150c8001500300d15002500600e25004000a   Forequipmentdesignedtobeconnectedtoathree-phase,three-wiresupply,wherethereisnoneutralconductor,theACMAINSSUPPLYvoltageistheline-to-linevoltage.Inallothercases,wherethereisaneutralconductor,itistheline-to-neutralvoltage.b  TheMAINSTRANSIENTVOLTAGEisalwaysoneofthevaluesinthetable.Interpolationisnotpermitted.c  Including120/208Vand120/240V.d  Including230/400Vand277/480V.e  Including400/690V.Ingeneral,CLEARANCESinequipmentintendedtobeconnectedtotheACMAINSSUPPLYshallbedesignedforOvervoltageCategoryII.如果所測的工作電壓峰值超過下表規(guī)格時，上述空間距離的值需增加下表所列的對應(yīng)值附表2K–一次電路以及一次電路與二次電路之間的最小電氣絕緣（摘錄標準表2K）　　　　　　　　　　　　　Unit:mmPeakingworkingvoltage uptoandincluding,VMainstransientvoltage150025004000Pollutiondegree1and231and231,2and3FB/SRFB/SRFB/SRFB/SRFB/SR710.4120.81.32.61241.32423.26.42100.5120.81.32.61.4241.52423.26.4420F1.5 B/S2.0 R4.02.53.26.4840F3.0 B/S3.2 R6.4 ThevaluesinthetableareapplicabletoFUNCTIONALINSULATION(F)ifrequiredby5.3.4a)(see2.10.1.3),BASICINSULATION(B),SUPPLEMENTARYINSULATION(S)andREINFORCEDINSULATION(R).IfthepeakworkingvoltagesexceedsthepeakvoltageoftheACmainsupplyvoltage,linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedminimumclearancebeingroundeduptothenexthigher0.1mmincrement.附表2L–次電路中的附加間隙（摘錄標準表2L）　　　　　　　　　　　　　Unit:mmMainstransientvoltage1500V2500VPollutiondegree1and2Pollution3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPollutiondegree1,2and3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPeakworkingvoltageuptoandincluding, VPeakworkingvoltageuptoandincludingV21021000420002982940.10.24930.10.23863790.20.45670.20.44744630.30.66400.30.65625470.40.87130.40.8Forvoltagesabovethepeakworkingvoltagevaluesgiveninthetable,linerextrapolationispermitted.附表2N–最小爬電距離（摘錄標準表2N）　　　　　　　　　　　　　Unit:mmRMSworkingvoltageuptoandincluding,VPollutiondegree12123MaterialgroupPrintedboardsOthermaterialsI,II,IIIa,IIIbI,II,IIIaI,II,IIIa,IIIbIIIIIIa,IIIbIIIIIIa,IIIb100.0250.040.080.40.40.411112.50.0250.040.090.420.420.421.051.051.05160.0250.040.10.450.450.451.11.11.1200.0250.040.110.480.480.481.21.21.2250.0250.040.1250.50.50.51.251.251.25320.0250.040.140.530.530.531.31.31.3400.0250.040.160.560.81.11.41.61.8500.0250.040.180.60.851.21.51.71.9630.040.0630.20.630.91.251.61.82800.0630.10.220.670.91.31.71.92.11000.10.160.250.7111.41.822.21250.160.250.280.751.051.51.92.12.41600.250.40.320.81.11.622.22.52000.40.630.4211.422.52.83.22500.5610.561.251.82.53.23.643200.751.60.751.62.23.244.5540012122.8455.66.35001.32.51.32.53.656.37.18Linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedspacingbeingroundedtothenexthigher0.1mmincrement.Forreinforcedinsulation,thecalculatedvalueforbasicinsulationshallbedoubledfirstbeforeapplyingtheroundingoff.我司產(chǎn)品一般使用“污染等級2，材料組別：IIIa或IIIb”如果從表2N查得的爬電距離小于從表2K或2L或表2M（適用時）查的相應(yīng)的電氣間隙，則應(yīng)采用所查得的該電氣間隙值作為最小爬電距離的數(shù)值

我們就是按照這張表來的

 

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P200818
LV.5
10
2010-11-21 21:16
@yong168
學習了~~~~

今天又遇到這個問題，裸板測試老化沒問題 ，等灌封（防水電源）后，高溫老化后，出現(xiàn)聲音，并且輸出電壓掉了2V左右，拆開電源剪掉地線（原本地線接外殼并且跟PCB板子的Y電容連接的），只接外殼后就沒問題了 ，大家能否給個解釋。

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wuzhonggui
LV.9
11
2010-11-21 22:13
@P200818
今天又遇到這個問題，裸板測試老化沒問題，等灌封（防水電源）后，高溫老化后，出現(xiàn)聲音，并且輸出電壓掉了2V左右，拆開電源剪掉地線（原本地線接外殼并且跟PCB板子的Y電容連接的），只接外殼后就沒問題了，大家能否給個解釋。

外殼是接輸入還是輸出的地！

最好是兩邊都接地！

安全方面的考慮！

 

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cheng111
LV.11
12
2010-11-23 22:10
@powercheng
我們就是按照這張表來的 

有一點不理解：

“附注：決定是否符合要求前，內(nèi)部器件應(yīng)先施與10N力，外殼應(yīng)施與30N力，以減小其距離.....” 

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zero3210
LV.7
13
2010-11-24 13:09
@wuzhonggui
 這是IEC-60950的空間和爬電距離要求：附表2J–AC交流電源瞬間電壓（摘錄標準表2J）ACmainsupplyvoltageuptoandincludingaMainstransientvoltageVpeakbOvervoltagecategoryVr.m.sIII50330550100500800150c8001500300d15002500600e25004000a   Forequipmentdesignedtobeconnectedtoathree-phase,three-wiresupply,wherethereisnoneutralconductor,theACMAINSSUPPLYvoltageistheline-to-linevoltage.Inallothercases,wherethereisaneutralconductor,itistheline-to-neutralvoltage.b  TheMAINSTRANSIENTVOLTAGEisalwaysoneofthevaluesinthetable.Interpolationisnotpermitted.c  Including120/208Vand120/240V.d  Including230/400Vand277/480V.e  Including400/690V.Ingeneral,CLEARANCESinequipmentintendedtobeconnectedtotheACMAINSSUPPLYshallbedesignedforOvervoltageCategoryII.如果所測的工作電壓峰值超過下表規(guī)格時，上述空間距離的值需增加下表所列的對應(yīng)值附表2K–一次電路以及一次電路與二次電路之間的最小電氣絕緣（摘錄標準表2K）　　　　　　　　　　　　　Unit:mmPeakingworkingvoltage uptoandincluding,VMainstransientvoltage150025004000Pollutiondegree1and231and231,2and3FB/SRFB/SRFB/SRFB/SRFB/SR710.4120.81.32.61241.32423.26.42100.5120.81.32.61.4241.52423.26.4420F1.5 B/S2.0 R4.02.53.26.4840F3.0 B/S3.2 R6.4 ThevaluesinthetableareapplicabletoFUNCTIONALINSULATION(F)ifrequiredby5.3.4a)(see2.10.1.3),BASICINSULATION(B),SUPPLEMENTARYINSULATION(S)andREINFORCEDINSULATION(R).IfthepeakworkingvoltagesexceedsthepeakvoltageoftheACmainsupplyvoltage,linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedminimumclearancebeingroundeduptothenexthigher0.1mmincrement.附表2L–次電路中的附加間隙（摘錄標準表2L）　　　　　　　　　　　　　Unit:mmMainstransientvoltage1500V2500VPollutiondegree1and2Pollution3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPollutiondegree1,2and3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPeakworkingvoltageuptoandincluding, VPeakworkingvoltageuptoandincludingV21021000420002982940.10.24930.10.23863790.20.45670.20.44744630.30.66400.30.65625470.40.87130.40.8Forvoltagesabovethepeakworkingvoltagevaluesgiveninthetable,linerextrapolationispermitted.附表2N–最小爬電距離（摘錄標準表2N）　　　　　　　　　　　　　Unit:mmRMSworkingvoltageuptoandincluding,VPollutiondegree12123MaterialgroupPrintedboardsOthermaterialsI,II,IIIa,IIIbI,II,IIIaI,II,IIIa,IIIbIIIIIIa,IIIbIIIIIIa,IIIb100.0250.040.080.40.40.411112.50.0250.040.090.420.420.421.051.051.05160.0250.040.10.450.450.451.11.11.1200.0250.040.110.480.480.481.21.21.2250.0250.040.1250.50.50.51.251.251.25320.0250.040.140.530.530.531.31.31.3400.0250.040.160.560.81.11.41.61.8500.0250.040.180.60.851.21.51.71.9630.040.0630.20.630.91.251.61.82800.0630.10.220.670.91.31.71.92.11000.10.160.250.7111.41.822.21250.160.250.280.751.051.51.92.12.41600.250.40.320.81.11.622.22.52000.40.630.4211.422.52.83.22500.5610.561.251.82.53.23.643200.751.60.751.62.23.244.5540012122.8455.66.35001.32.51.32.53.656.37.18Linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedspacingbeingroundedtothenexthigher0.1mmincrement.Forreinforcedinsulation,thecalculatedvalueforbasicinsulationshallbedoubledfirstbeforeapplyingtheroundingoff.我司產(chǎn)品一般使用“污染等級2，材料組別：IIIa或IIIb”如果從表2N查得的爬電距離小于從表2K或2L或表2M（適用時）查的相應(yīng)的電氣間隙，則應(yīng)采用所查得的該電氣間隙值作為最小爬電距離的數(shù)值
很專業(yè) 資料很好 收下了謝謝
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2010-11-24 13:20
@隱形專家
[圖片] 
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cheng111
LV.11
15
2010-11-26 02:03
@cheng111
有一點不理解：“附注：決定是否符合要求前，內(nèi)部器件應(yīng)先施與10N力，外殼應(yīng)施與30N力，以減小其距離.....” 

怎么沒有人跟帖呢

自己頂一下

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flyahead
LV.5
16
2010-11-26 16:03
@wuzhonggui
 這是IEC-60950的空間和爬電距離要求：附表2J–AC交流電源瞬間電壓（摘錄標準表2J）ACmainsupplyvoltageuptoandincludingaMainstransientvoltageVpeakbOvervoltagecategoryVr.m.sIII50330550100500800150c8001500300d15002500600e25004000a   Forequipmentdesignedtobeconnectedtoathree-phase,three-wiresupply,wherethereisnoneutralconductor,theACMAINSSUPPLYvoltageistheline-to-linevoltage.Inallothercases,wherethereisaneutralconductor,itistheline-to-neutralvoltage.b  TheMAINSTRANSIENTVOLTAGEisalwaysoneofthevaluesinthetable.Interpolationisnotpermitted.c  Including120/208Vand120/240V.d  Including230/400Vand277/480V.e  Including400/690V.Ingeneral,CLEARANCESinequipmentintendedtobeconnectedtotheACMAINSSUPPLYshallbedesignedforOvervoltageCategoryII.如果所測的工作電壓峰值超過下表規(guī)格時，上述空間距離的值需增加下表所列的對應(yīng)值附表2K–一次電路以及一次電路與二次電路之間的最小電氣絕緣（摘錄標準表2K）　　　　　　　　　　　　　Unit:mmPeakingworkingvoltage uptoandincluding,VMainstransientvoltage150025004000Pollutiondegree1and231and231,2and3FB/SRFB/SRFB/SRFB/SRFB/SR710.4120.81.32.61241.32423.26.42100.5120.81.32.61.4241.52423.26.4420F1.5 B/S2.0 R4.02.53.26.4840F3.0 B/S3.2 R6.4 ThevaluesinthetableareapplicabletoFUNCTIONALINSULATION(F)ifrequiredby5.3.4a)(see2.10.1.3),BASICINSULATION(B),SUPPLEMENTARYINSULATION(S)andREINFORCEDINSULATION(R).IfthepeakworkingvoltagesexceedsthepeakvoltageoftheACmainsupplyvoltage,linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedminimumclearancebeingroundeduptothenexthigher0.1mmincrement.附表2L–次電路中的附加間隙（摘錄標準表2L）　　　　　　　　　　　　　Unit:mmMainstransientvoltage1500V2500VPollutiondegree1and2Pollution3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPollutiondegree1,2and3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPeakworkingvoltageuptoandincluding, VPeakworkingvoltageuptoandincludingV21021000420002982940.10.24930.10.23863790.20.45670.20.44744630.30.66400.30.65625470.40.87130.40.8Forvoltagesabovethepeakworkingvoltagevaluesgiveninthetable,linerextrapolationispermitted.附表2N–最小爬電距離（摘錄標準表2N）　　　　　　　　　　　　　Unit:mmRMSworkingvoltageuptoandincluding,VPollutiondegree12123MaterialgroupPrintedboardsOthermaterialsI,II,IIIa,IIIbI,II,IIIaI,II,IIIa,IIIbIIIIIIa,IIIbIIIIIIa,IIIb100.0250.040.080.40.40.411112.50.0250.040.090.420.420.421.051.051.05160.0250.040.10.450.450.451.11.11.1200.0250.040.110.480.480.481.21.21.2250.0250.040.1250.50.50.51.251.251.25320.0250.040.140.530.530.531.31.31.3400.0250.040.160.560.81.11.41.61.8500.0250.040.180.60.851.21.51.71.9630.040.0630.20.630.91.251.61.82800.0630.10.220.670.91.31.71.92.11000.10.160.250.7111.41.822.21250.160.250.280.751.051.51.92.12.41600.250.40.320.81.11.622.22.52000.40.630.4211.422.52.83.22500.5610.561.251.82.53.23.643200.751.60.751.62.23.244.5540012122.8455.66.35001.32.51.32.53.656.37.18Linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedspacingbeingroundedtothenexthigher0.1mmincrement.Forreinforcedinsulation,thecalculatedvalueforbasicinsulationshallbedoubledfirstbeforeapplyingtheroundingoff.我司產(chǎn)品一般使用“污染等級2，材料組別：IIIa或IIIb”如果從表2N查得的爬電距離小于從表2K或2L或表2M（適用時）查的相應(yīng)的電氣間隙，則應(yīng)采用所查得的該電氣間隙值作為最小爬電距離的數(shù)值
學習了
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holyfaith
LV.8
17
2010-11-26 21:34
@wuzhonggui
 這是IEC-60950的空間和爬電距離要求：附表2J–AC交流電源瞬間電壓（摘錄標準表2J）ACmainsupplyvoltageuptoandincludingaMainstransientvoltageVpeakbOvervoltagecategoryVr.m.sIII50330550100500800150c8001500300d15002500600e25004000a   Forequipmentdesignedtobeconnectedtoathree-phase,three-wiresupply,wherethereisnoneutralconductor,theACMAINSSUPPLYvoltageistheline-to-linevoltage.Inallothercases,wherethereisaneutralconductor,itistheline-to-neutralvoltage.b  TheMAINSTRANSIENTVOLTAGEisalwaysoneofthevaluesinthetable.Interpolationisnotpermitted.c  Including120/208Vand120/240V.d  Including230/400Vand277/480V.e  Including400/690V.Ingeneral,CLEARANCESinequipmentintendedtobeconnectedtotheACMAINSSUPPLYshallbedesignedforOvervoltageCategoryII.如果所測的工作電壓峰值超過下表規(guī)格時，上述空間距離的值需增加下表所列的對應(yīng)值附表2K–一次電路以及一次電路與二次電路之間的最小電氣絕緣（摘錄標準表2K）　　　　　　　　　　　　　Unit:mmPeakingworkingvoltage uptoandincluding,VMainstransientvoltage150025004000Pollutiondegree1and231and231,2and3FB/SRFB/SRFB/SRFB/SRFB/SR710.4120.81.32.61241.32423.26.42100.5120.81.32.61.4241.52423.26.4420F1.5 B/S2.0 R4.02.53.26.4840F3.0 B/S3.2 R6.4 ThevaluesinthetableareapplicabletoFUNCTIONALINSULATION(F)ifrequiredby5.3.4a)(see2.10.1.3),BASICINSULATION(B),SUPPLEMENTARYINSULATION(S)andREINFORCEDINSULATION(R).IfthepeakworkingvoltagesexceedsthepeakvoltageoftheACmainsupplyvoltage,linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedminimumclearancebeingroundeduptothenexthigher0.1mmincrement.附表2L–次電路中的附加間隙（摘錄標準表2L）　　　　　　　　　　　　　Unit:mmMainstransientvoltage1500V2500VPollutiondegree1and2Pollution3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPollutiondegree1,2and3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPeakworkingvoltageuptoandincluding, VPeakworkingvoltageuptoandincludingV21021000420002982940.10.24930.10.23863790.20.45670.20.44744630.30.66400.30.65625470.40.87130.40.8Forvoltagesabovethepeakworkingvoltagevaluesgiveninthetable,linerextrapolationispermitted.附表2N–最小爬電距離（摘錄標準表2N）　　　　　　　　　　　　　Unit:mmRMSworkingvoltageuptoandincluding,VPollutiondegree12123MaterialgroupPrintedboardsOthermaterialsI,II,IIIa,IIIbI,II,IIIaI,II,IIIa,IIIbIIIIIIa,IIIbIIIIIIa,IIIb100.0250.040.080.40.40.411112.50.0250.040.090.420.420.421.051.051.05160.0250.040.10.450.450.451.11.11.1200.0250.040.110.480.480.481.21.21.2250.0250.040.1250.50.50.51.251.251.25320.0250.040.140.530.530.531.31.31.3400.0250.040.160.560.81.11.41.61.8500.0250.040.180.60.851.21.51.71.9630.040.0630.20.630.91.251.61.82800.0630.10.220.670.91.31.71.92.11000.10.160.250.7111.41.822.21250.160.250.280.751.051.51.92.12.41600.250.40.320.81.11.622.22.52000.40.630.4211.422.52.83.22500.5610.561.251.82.53.23.643200.751.60.751.62.23.244.5540012122.8455.66.35001.32.51.32.53.656.37.18Linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedspacingbeingroundedtothenexthigher0.1mmincrement.Forreinforcedinsulation,thecalculatedvalueforbasicinsulationshallbedoubledfirstbeforeapplyingtheroundingoff.我司產(chǎn)品一般使用“污染等級2，材料組別：IIIa或IIIb”如果從表2N查得的爬電距離小于從表2K或2L或表2M（適用時）查的相應(yīng)的電氣間隙，則應(yīng)采用所查得的該電氣間隙值作為最小爬電距離的數(shù)值

很詳細的，呵呵

不過好像是有幾級要求的是吧，在不同的場合要求是不一樣的吧

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holyfaith
LV.8
18
2010-11-26 21:35
@cheng111
有一點不理解：“附注：決定是否符合要求前，內(nèi)部器件應(yīng)先施與10N力，外殼應(yīng)施與30N力，以減小其距離.....” 
說的是不是強度呢？就是有的說要求從多少米摔下去不摔壞，有沒有類似的地方
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cheng111
LV.11
19
2010-11-27 14:28
@holyfaith
說的是不是強度呢？就是有的說要求從多少米摔下去不摔壞，有沒有類似的地方

謝謝，不知道這個文檔從哪里下載呢。我準備開始研究AC-DC模塊，想多學習一些

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yc99826067
LV.4
20
2010-11-27 16:27
@海優(yōu)小波
**此帖已被管理員刪除**

受教啦

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bode
LV.9
21
2010-11-28 11:54
@wuzhonggui
 這是IEC-60950的空間和爬電距離要求：附表2J–AC交流電源瞬間電壓（摘錄標準表2J）ACmainsupplyvoltageuptoandincludingaMainstransientvoltageVpeakbOvervoltagecategoryVr.m.sIII50330550100500800150c8001500300d15002500600e25004000a   Forequipmentdesignedtobeconnectedtoathree-phase,three-wiresupply,wherethereisnoneutralconductor,theACMAINSSUPPLYvoltageistheline-to-linevoltage.Inallothercases,wherethereisaneutralconductor,itistheline-to-neutralvoltage.b  TheMAINSTRANSIENTVOLTAGEisalwaysoneofthevaluesinthetable.Interpolationisnotpermitted.c  Including120/208Vand120/240V.d  Including230/400Vand277/480V.e  Including400/690V.Ingeneral,CLEARANCESinequipmentintendedtobeconnectedtotheACMAINSSUPPLYshallbedesignedforOvervoltageCategoryII.如果所測的工作電壓峰值超過下表規(guī)格時，上述空間距離的值需增加下表所列的對應(yīng)值附表2K–一次電路以及一次電路與二次電路之間的最小電氣絕緣（摘錄標準表2K）　　　　　　　　　　　　　Unit:mmPeakingworkingvoltage uptoandincluding,VMainstransientvoltage150025004000Pollutiondegree1and231and231,2and3FB/SRFB/SRFB/SRFB/SRFB/SR710.4120.81.32.61241.32423.26.42100.5120.81.32.61.4241.52423.26.4420F1.5 B/S2.0 R4.02.53.26.4840F3.0 B/S3.2 R6.4 ThevaluesinthetableareapplicabletoFUNCTIONALINSULATION(F)ifrequiredby5.3.4a)(see2.10.1.3),BASICINSULATION(B),SUPPLEMENTARYINSULATION(S)andREINFORCEDINSULATION(R).IfthepeakworkingvoltagesexceedsthepeakvoltageoftheACmainsupplyvoltage,linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedminimumclearancebeingroundeduptothenexthigher0.1mmincrement.附表2L–次電路中的附加間隙（摘錄標準表2L）　　　　　　　　　　　　　Unit:mmMainstransientvoltage1500V2500VPollutiondegree1and2Pollution3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPollutiondegree1,2and3FunctionalbasicorsupplementaryinsulationReinforcedinsulationPeakworkingvoltageuptoandincluding, VPeakworkingvoltageuptoandincludingV21021000420002982940.10.24930.10.23863790.20.45670.20.44744630.30.66400.30.65625470.40.87130.40.8Forvoltagesabovethepeakworkingvoltagevaluesgiveninthetable,linerextrapolationispermitted.附表2N–最小爬電距離（摘錄標準表2N）　　　　　　　　　　　　　Unit:mmRMSworkingvoltageuptoandincluding,VPollutiondegree12123MaterialgroupPrintedboardsOthermaterialsI,II,IIIa,IIIbI,II,IIIaI,II,IIIa,IIIbIIIIIIa,IIIbIIIIIIa,IIIb100.0250.040.080.40.40.411112.50.0250.040.090.420.420.421.051.051.05160.0250.040.10.450.450.451.11.11.1200.0250.040.110.480.480.481.21.21.2250.0250.040.1250.50.50.51.251.251.25320.0250.040.140.530.530.531.31.31.3400.0250.040.160.560.81.11.41.61.8500.0250.040.180.60.851.21.51.71.9630.040.0630.20.630.91.251.61.82800.0630.10.220.670.91.31.71.92.11000.10.160.250.7111.41.822.21250.160.250.280.751.051.51.92.12.41600.250.40.320.81.11.622.22.52000.40.630.4211.422.52.83.22500.5610.561.251.82.53.23.643200.751.60.751.62.23.244.5540012122.8455.66.35001.32.51.32.53.656.37.18Linearinterpolationispermittedbetweenthenearesttwopoints,thecalculatedspacingbeingroundedtothenexthigher0.1mmincrement.Forreinforcedinsulation,thecalculatedvalueforbasicinsulationshallbedoubledfirstbeforeapplyingtheroundingoff.我司產(chǎn)品一般使用“污染等級2，材料組別：IIIa或IIIb”如果從表2N查得的爬電距離小于從表2K或2L或表2M（適用時）查的相應(yīng)的電氣間隙，則應(yīng)采用所查得的該電氣間隙值作為最小爬電距離的數(shù)值

這些安全距離，是怎么得出來的？

我的理解是在空間上加一定的電壓，然后看漏電流，但這個漏電流是多大才符合標準呢？

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cheng111
LV.11
22
2010-11-28 23:34
@bode
這些安全距離，是怎么得出來的？我的理解是在空間上加一定的電壓，然后看漏電流，但這個漏電流是多大才符合標準呢？
會不會和空氣放電有關(guān)呢？
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2010-11-30 08:51
@yc99826067
受教啦[圖片]
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perterlong
LV.6
24
2010-12-23 18:32
@照明世界
[圖片]
UL60950+UL8750
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隱形專家
LV.10
25
2010-12-24 08:29
@P200818
今天又遇到這個問題，裸板測試老化沒問題，等灌封（防水電源）后，高溫老化后，出現(xiàn)聲音，并且輸出電壓掉了2V左右，拆開電源剪掉地線（原本地線接外殼并且跟PCB板子的Y電容連接的），只接外殼后就沒問題了，大家能否給個解釋。
灌封后材料的介電常數(shù)變了，你在暗室內(nèi)觀察那里有電暈，適當補救。
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bobery
LV.7
26
2011-01-05 17:57
@perterlong
UL60950+UL8750
收藏了
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jepsun
LV.9
27
2011-01-05 21:32
@cheng111
謝謝，不知道這個文檔從哪里下載呢。我準備開始研究AC-DC模塊，想多學習一些
60950對應(yīng)的國標是4943.給你傳一個。GB4943-2001 
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jepsun
LV.9
28
2011-01-05 21:36
@cheng111
有一點不理解：“附注：決定是否符合要求前，內(nèi)部器件應(yīng)先施與10N力，外殼應(yīng)施與30N力，以減小其距離.....” 
我是這樣理解的：壓迫板子，可以縮小爬電距離；壓迫外殼，可以縮小電氣間隙。一個是平面上的一個是空間的。對應(yīng)不同的措施，以人為因素，來模擬最壞的情況下：爬電距離和電氣間隙是否能夠滿足安規(guī)需求。
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jepsun
LV.9
29
2011-01-05 21:41
@cheng111
會不會和空氣放電有關(guān)呢？

不認同bode的看法。這個和空氣電擊穿有關(guān)。

理論上，空氣是絕緣的，但是在一定距離、強電壓下，這個位置的空氣，有可能發(fā)生擊穿，也就不再絕緣了。至于機理，設(shè)計到物理化學、空氣組分等方面的知識。其實這個在高壓電的傳輸方面體會的更深。

個人理解！

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jepsun
LV.9
30
2011-01-05 21:42
@bode
這些安全距離，是怎么得出來的？我的理解是在空間上加一定的電壓，然后看漏電流，但這個漏電流是多大才符合標準呢？
再看一遍，你的理解也有些道理。但我保留。
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jepsun
LV.9
31
2011-01-05 21:44
@海優(yōu)小波
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