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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 |倒序浏览 |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?
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
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;
& e& ?* ?; x9 Q% h. H3 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):8 Y( _8 ]6 A7 P% o' j. O* y

* _4 x" n9 c0 ]. Z4 R4.4.4.5 Output short circuit8 p- ]3 t, |9 ?% N
Each power output port of the PCE, and each section of a tapped output, shall be tested one
' {; d/ I+ M# J1 l1 Y$ B5 Bat a time, to simulate short circuits in the load or wiring. Overcurrent protection devices as
4 v: `5 P* p: }! q( J) Oprovided in the PCE or as specified in the installation instructions, shall be fitted during the
1 B$ E; R! U/ a9 h( C9 g$ Wtest. All other outputs are loaded or not loaded, whichever load condition of normal use is less
" M( d) C/ @, bfavorable.; d7 _! M6 ^' N# z. F- J
Testing is required to be performed on all combinations of terminals for the port under
( W) @4 e! Y1 h, ^# K( m" Qconsideration, two at a time, including neutral and earth terminals, and one test with all
, J! l" Z$ O  T$ A- Q% Acurrent-carrying terminals of the port shorted together at once. Where analysis shows that the9 M$ B$ d) U$ J# {( K
test for one combination is representative of other combinations, tests may be omitted.
( X; Z- H2 L# I( Q. XIn addition to the requirements of 4.4.3, the short-circuit currents are to be recorded and if
* Z" H/ T0 `6 ?5 G" S, lthey exceed the maximum rated current of the circuit, the maximum measured current shall be; y! ~' r4 a1 E1 j
provided in the installation manual for the purpose of coordination of overcurrent protection of
7 S/ X. `4 a  {$ E; w- o: k9 fthe external circuit conductors (see 5.3.2).! r! W6 @7 W  a3 t' s' c
The value(s) to be recorded and to be provided with the PCE instructions are the peak
2 V3 v$ [# a. b7 q& p# Ocurrent, and the highest of the RMS current values measured or calculated over a time period& {5 r  `0 E- S1 M1 \4 @3 R
as follows:
; V5 O) `0 w% J& K4 Z" Ia) for AC signals, 3 cycles of the nominal AC frequency for the port under consideration, in
4 A* U" n& [5 S/ ^' u  m4 h: _1 Awhich case the value is to be stated as the 3-cycle RMS value;( }% o9 c, L9 K; N& R9 Y$ V; {
b) for all signals, the duration of the short circuit from the time the short circuit is applied, until+ o+ e& k: j6 Q
the time the short circuit current is interrupted by a protective device or other mechanism, in
, C" p5 i% S: y; S! i  S5 [& Z) ewhich case the value stated is to include the RMS value and the time period in seconds;6 H5 Y' j- X% p1 c. |
c) for short circuit tests that result in a continuous non-zero value, the steady-state RMS5 v$ a" ^- H1 ^/ K- V* v
value, in which case the value is to be stated as a continuous RMS value.
# K; o5 P6 E1 Y" u. G  E& KNOTE Where the intended use of the short-circuit current information requires a different type of measurement,( H6 h7 Q: ?8 ?0 o
additional data may be provided. For example, for AC mains fault current contribution some utilities may prefer a
, @, R. F+ R( B: o6 U4 V; X¼-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
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
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
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      
7 P0 p, H6 H5 L我們以前有裝, 現在都拿掉了.
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