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直流侧可有可无,通过short test评估就OK;
6 J Z1 t( ?0 y4 n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):
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4.4.4.5 Output short circuit
0 W2 b5 _3 Z$ L- q* _' xEach power output port of the PCE, and each section of a tapped output, shall be tested one
( c4 w+ S4 c: P2 x3 m! f. [4 G3 K$ Cat a time, to simulate short circuits in the load or wiring. Overcurrent protection devices as3 L O& L& |- W5 `' U! Z
provided in the PCE or as specified in the installation instructions, shall be fitted during the
/ w5 a. F a4 Mtest. All other outputs are loaded or not loaded, whichever load condition of normal use is less
* e& s& w0 c* v, M; h! W# {' mfavorable.# `$ \4 H6 N5 k3 F
Testing is required to be performed on all combinations of terminals for the port under
. A- ]" i# H# o( J7 j: B0 Xconsideration, two at a time, including neutral and earth terminals, and one test with all; t+ D5 K0 d5 ]! X( S: p4 k/ V n
current-carrying terminals of the port shorted together at once. Where analysis shows that the
M* n' v0 D$ qtest for one combination is representative of other combinations, tests may be omitted.
; n3 S. ^7 q4 S5 W0 D9 F1 A* H+ fIn addition to the requirements of 4.4.3, the short-circuit currents are to be recorded and if+ S) Q$ h9 D; Q7 K
they exceed the maximum rated current of the circuit, the maximum measured current shall be6 \6 v, s- I0 u7 K& Q
provided in the installation manual for the purpose of coordination of overcurrent protection of3 e, I* J/ E' K: m' I
the external circuit conductors (see 5.3.2).7 h* z- x: t7 w% h' d- ]; @; ]! U
The value(s) to be recorded and to be provided with the PCE instructions are the peak6 ]" i" d5 T/ C5 \" O. o
current, and the highest of the RMS current values measured or calculated over a time period
( Z, w" ]4 _" |) oas follows:7 f8 A* [4 Z1 `; d* [* M5 J
a) for AC signals, 3 cycles of the nominal AC frequency for the port under consideration, in( q8 U& r) J; @9 D. x. n& b
which case the value is to be stated as the 3-cycle RMS value;
% G% W. Z$ B1 P$ H0 @& z$ Ub) for all signals, the duration of the short circuit from the time the short circuit is applied, until
7 p- k, o% B3 V% N( n6 c& w8 Athe time the short circuit current is interrupted by a protective device or other mechanism, in i U5 L9 C) G. ^+ Q6 v$ o* F) r! ]' U
which case the value stated is to include the RMS value and the time period in seconds;
: P) e$ Y" p4 w, _0 K ^& }. u1 sc) for short circuit tests that result in a continuous non-zero value, the steady-state RMS* G' A5 }+ x+ r7 A M& e! A( L
value, in which case the value is to be stated as a continuous RMS value.; {( [* w, M9 ~; m G9 Y) u/ h5 G
NOTE Where the intended use of the short-circuit current information requires a different type of measurement,
" X! L$ D% e, O% p/ I' J$ kadditional data may be provided. For example, for AC mains fault current contribution some utilities may prefer a
( ?4 l {3 R$ `/ C¼-cycle RMS or other RMS calculation to the 3-cycle RMS above. |
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