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标题: 这份报告中的NC,NB,CT是什么的缩写？ [打印本页]

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作者: 火水晶    时间: 2013-10-14 15:54
标题: 这份报告中的NC,NB,CT是什么的缩写？
[td]

5.3	TABLE: fault condition tests						Pass
	ambient temperature ( ° C)............................... :				85		—
	Power source for EUT: Manufacturer, model/type, output rating................................................... :				EBC series		—
Component No.	Fault	Supply voltage 4 w7 p9 D: ^  u( S( O+ X(V)	Test time	Fuse #	Fuse current (A)	Observation
COMPONENT FAILURE TEST QPS5120	--	--	--	--	--	--
IC104 (op amp)	Short Pn 2 to ref gnd	48Vdc	Instantly	Power Board/ Test fixture F1	30A	NC, NB, unit shut down
U101 (opto)	Short Pn 2 to ref gnd	48Vdc	Instantly	Same	30A	NC, NB, unit shut down
IC200 (feedbacK)	Pin 3-4 Short	48Vdc	Instantly	Same	30A	NC, NB, unit shut down
ABNORMAL OPERATION TESTS	--	--	--	--	--	--
EUT QPS5120	No forced air, in wind tunnel ambient	48Vdc	2:05hrs	Power Board/ Test fixture F1	30A	NB, NC, CT Output loaded to 12.5A @ 12Vdcmain T1 core = 116.7°CMain T1 PWB trace = 118.2°C, Ambient = 48°CWithout air flow, the ambient and load is de-rated to the maximum shown here in the resultsBased on output current efficiency de-rating curves, 48V input has the highest output efficiency.

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作者: Nezof    时间: 2013-10-14 15:58
NB 是no break down 即电气强度可以
& S" T  `4 N# U3 O/ ^# E  A. R+ FNC 是没有碳化现象
NT是没有超过温度限值
6 {2 A' \8 ^% d; S% X
% Y5 y8 {6 G  `当然，上述是我根据字面和你的图猜的，具体可以通过看标准求证
6 h! K8 L5 z, Q% v# G' ^

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作者: zhh0815    时间: 2013-10-14 16:19
这个报告没有这些缩写解释吗？

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作者: 火水晶    时间: 2013-10-14 16:29

zhh0815 发表于 2013-10-14 16:19
这个报告没有这些缩写解释吗？

, M# F0 G  x( g/ j没有找到。这是一份UL报告。UL报告的解释一般会在什么地方？

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作者: wpcily    时间: 2013-10-14 16:56
IP = Internal protection operated (component indicated) CT = Constant temperatures were
obtained CD = Components damaged (damaged components indicated) NB = No indication of dielectric
breakdown NC = Cheesecloth remained intact NT = Tissue paper remained intact

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作者: stey    时间: 2013-10-14 17:45
一般报告后面会有注解。

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作者: 火水晶    时间: 2013-10-15 08:36

wpcily 发表于 2013-10-14 16:56
IP = Internal protection operated (component indicated) CT = Constant temperatures were
obtained CD ...

这个是在什么资料中有说明吗？能否上传让大家学习一下？

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作者: 火水晶    时间: 2013-10-15 08:37

stey 发表于 2013-10-14 17:45
! ^, J/ R5 c$ ~. ^% |& j( p一般报告后面会有注解。

. y8 K$ c& ^- z$ G$ i9 m在这份报告中没有找到。

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作者: wpcily    时间: 2013-10-15 11:19

火水晶 发表于 2013-10-15 08:36
( w* h# i+ c/ E( b; |# [' g7 i" e这个是在什么资料中有说明吗？能否上传让大家学习一下？

% R, E8 P5 H+ o# t9 z7 |UL的datasheet上有描述的。详细的如下：
9 t4 S2 L2 A: W( z4 }0 w+ UIP  Internal protection operated (list component)
2 C% v; Q! P5 P9 `) S; |CT  Constant temperatures were obtained
! k$ G2 Y) x6 n% e) l2 u% DTW  Transformer winding opened
# U# \5 n' U2 g8 s4 E4 t/ y* zCD  Components damaged (list damaged components)
7 z1 U; ~* L" i+ LNB  No indication of dielectric breakdown       
YB  Dielectric breakdown (indicate time and location)
1 j8 z& y) j" x4 z/ r( qNC  Cheesecloth remained intact
1 M- W0 V* t& }$ b- MYC  Cheesecloth charred or flamed
NT  Tissue paper remained intact
1 s8 n* |( p# u% mYT  Tissue paper charred or flamed

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