标题: 逆变器中交流、直流侧的保险丝，必须要安装吗？ [打印本页] 作者: yeanling 时间: 2012-7-31 20:32 标题: 逆变器中交流、直流侧的保险丝，必须要安装吗？ 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？作者: 11狼 时间: 2012-8-1 08:37
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，这要看你的设计了作者: 清水白菜 时间: 2012-8-1 12:37
直流侧可有可无，通过short test评估就OK； 4 D+ ~( w, u1 o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）： 0 h. i& c7 n4 b$ D7 Q; n # e$ Y. }3 A# k4.4.4.5 Output short circuit 4 Z( k* @- {- WEach power output port of the PCE, and each section of a tapped output, shall be tested one % P3 W; ?% a4 @' k L+ Q" k5 sat a time, to simulate short circuits in the load or wiring. Overcurrent protection devices as / L/ q8 `: A2 nprovided in the PCE or as specified in the installation instructions, shall be fitted during the ! j9 b. w9 S. I5 Ytest. All other outputs are loaded or not loaded, whichever load condition of normal use is less: c; U% @" q" u8 @7 {2 D
favorable.& X V; \1 t6 j7 C8 o! T+ W
Testing is required to be performed on all combinations of terminals for the port under , u& s3 l/ _; {- l6 o0 n% [consideration, two at a time, including neutral and earth terminals, and one test with all 6 T: o: L3 @( ^1 h+ ncurrent-carrying terminals of the port shorted together at once. Where analysis shows that the6 Y& |. p9 w. ~# H$ x4 g- F- t$ e
test for one combination is representative of other combinations, tests may be omitted. 1 b: h6 S" S0 L, FIn addition to the requirements of 4.4.3, the short-circuit currents are to be recorded and if/ P7 s, ]" _/ M9 j0 `) G
they exceed the maximum rated current of the circuit, the maximum measured current shall be 5 X7 F; k( K6 F9 l* Kprovided in the installation manual for the purpose of coordination of overcurrent protection of, V! Z! |: s- d
the external circuit conductors (see 5.3.2).4 @2 ?4 \7 U( B
The value(s) to be recorded and to be provided with the PCE instructions are the peak3 o! A& q3 A) ]5 G$ ~* @
current, and the highest of the RMS current values measured or calculated over a time period ) M: o; E. q0 i7 h6 S" Gas follows: ! M6 k# C4 t9 H! Q( Q. |a) for AC signals, 3 cycles of the nominal AC frequency for the port under consideration, in- f/ X" c5 q& K
which case the value is to be stated as the 3-cycle RMS value;2 G/ a# @+ C( F4 J* Y
b) for all signals, the duration of the short circuit from the time the short circuit is applied, until ! q8 H5 E4 ^' H) S) W: othe time the short circuit current is interrupted by a protective device or other mechanism, in; S A0 d/ Z" r; m
which case the value stated is to include the RMS value and the time period in seconds;/ ^% k4 B$ m* ]- k
c) for short circuit tests that result in a continuous non-zero value, the steady-state RMS; p& ^; J' j" R/ c; ^
value, in which case the value is to be stated as a continuous RMS value.$ t9 u; |- M7 R D
NOTE Where the intended use of the short-circuit current information requires a different type of measurement,+ Z8 `$ O: D3 i4 X
additional data may be provided. For example, for AC mains fault current contribution some utilities may prefer a 0 H% R1 Y" H' D8 U1 E: `/ l¼-cycle RMS or other RMS calculation to the 3-cycle RMS above.作者: 戏尘 时间: 2012-8-2 00:14
和设计有关 然后看你做异常时FUSE 的能否保护作者: houfengp83 时间: 2012-8-29 19:36
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作者: kevin245 时间: 2013-8-30 16:56
沒錯 -->不管是交流侧或者直流侧都可以不用保险絲 ) I9 n E3 t* u3 E
我們以前有裝, 現在都拿掉了.