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[逆变器认证] 逆变器中交流、直流侧的保险丝,必须要安装吗?

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楼主
发表于 2012-7-31 20:32 | 只看该作者 回帖奖励 |正序浏览 |阅读模式
广东安规检测
有限公司提供:
看到其他厂家的一些逆变器产品中都没有交流、直流侧保险丝。或者是只有交流侧有保险丝。那样的设计安规上是否可以?保险丝到底是否需要安装?怎么安装才符合要求呢?
6#
发表于 2013-8-30 16:56 | 只看该作者
沒錯 -->不管是交流侧或者直流侧都可以不用保险絲      
1 V9 K  V0 n- F1 r4 G我們以前有裝, 現在都拿掉了.
5#
发表于 2012-8-29 19:36 | 只看该作者
不管是交流侧或者直流侧都可以不用保险丝,交流并网侧可用继电器保护异常动作,直流侧如果连接到限流源就不存在过流
地板
发表于 2012-8-2 00:14 | 只看该作者
和设计有关 然后看你做异常时FUSE 的能否保护
板凳
发表于 2012-8-1 12:37 | 只看该作者
直流侧可有可无,通过short test评估就OK;7 c9 N7 `. y! ]/ a! z) J- `
交流侧就看你设计了,要样机里没有,需在说明书中说明装机时交流侧用的外置Fuse的Rating,相关要求如下(IEC 62109-1):
, O! e7 E1 ?+ j; X. E, F  {7 A4 \- _3 z
4.4.4.5 Output short circuit
7 C# m8 y, B5 H. T8 NEach power output port of the PCE, and each section of a tapped output, shall be tested one( h0 o8 i, {6 f6 l4 @1 J
at a time, to simulate short circuits in the load or wiring. Overcurrent protection devices as
" g% p3 D  [( i, l9 ]1 y: _provided in the PCE or as specified in the installation instructions, shall be fitted during the
0 U4 Z+ F; Z: o: U6 J' }0 m- ^) h. wtest. All other outputs are loaded or not loaded, whichever load condition of normal use is less8 F9 D: j$ e4 d- _$ a
favorable.
; @  }4 k, t$ ^% e( u; C( R. q, oTesting is required to be performed on all combinations of terminals for the port under. j3 u6 }3 z: U9 V0 {
consideration, two at a time, including neutral and earth terminals, and one test with all
7 ~0 [. K. f4 k4 Fcurrent-carrying terminals of the port shorted together at once. Where analysis shows that the1 @6 m+ z; N! R, O" |7 m  g1 ~5 T
test for one combination is representative of other combinations, tests may be omitted./ k% R+ @1 p+ A8 h5 J" Z) y
In addition to the requirements of 4.4.3, the short-circuit currents are to be recorded and if, s8 b" U7 q8 @3 g! M. F7 t% e
they exceed the maximum rated current of the circuit, the maximum measured current shall be
3 e$ S+ k  T; i( Y) k* @provided in the installation manual for the purpose of coordination of overcurrent protection of: m! H# A& ]7 U8 N8 F* b
the external circuit conductors (see 5.3.2).
: R! d4 S# T* l. t7 B: U! M& ZThe value(s) to be recorded and to be provided with the PCE instructions are the peak$ [# k, b. w' q, d; f
current, and the highest of the RMS current values measured or calculated over a time period' W/ @1 e3 O5 U+ X' q, b' R
as follows:
; U2 d4 j4 G$ o/ u9 {- H# A& \7 ^a) for AC signals, 3 cycles of the nominal AC frequency for the port under consideration, in, |9 [# o2 V! w) S$ }
which case the value is to be stated as the 3-cycle RMS value;
: H% z( o  j6 J3 Eb) for all signals, the duration of the short circuit from the time the short circuit is applied, until4 z6 v+ D% g4 P
the time the short circuit current is interrupted by a protective device or other mechanism, in6 P5 `* B" L6 o8 `
which case the value stated is to include the RMS value and the time period in seconds;2 p) U2 q) s2 s
c) for short circuit tests that result in a continuous non-zero value, the steady-state RMS  F. d8 e6 |' }8 I% F8 y
value, in which case the value is to be stated as a continuous RMS value.$ c. P; z2 v3 r) E. Q# ?: g" o, L
NOTE Where the intended use of the short-circuit current information requires a different type of measurement,
) l8 T& t2 |" dadditional data may be provided. For example, for AC mains fault current contribution some utilities may prefer a
! Y& [1 v1 q9 v¼-cycle RMS or other RMS calculation to the 3-cycle RMS above.

点评

多谢大侠指点迷津!  发表于 2012-8-1 15:13
沙发
发表于 2012-8-1 08:37 | 只看该作者
大部分厂家都是在交流侧安保险丝,但是也有在直流侧安装的,这要看你的设计了
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