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直流侧可有可无，通过short test评估就OK；
# b1 x( l) I, T& t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）：
/ X! d3 n* P% B4 f- b: f, H- H& g; H+ A9 `6 f. x) h; b1 V0 y- F
4.4.4.5 Output short circuit4 j6 G9 {+ x4 w! b1 A( B
Each power output port of the PCE, and each section of a tapped output, shall be tested one8 Q" E2 Q0 B! c% M9 }0 b
at a time, to simulate short circuits in the load or wiring. Overcurrent protection devices as
& ~+ u E) e5 k/ Yprovided in the PCE or as specified in the installation instructions, shall be fitted during the
, ^1 S( U5 Q1 @test. All other outputs are loaded or not loaded, whichever load condition of normal use is less$ h; ~3 _& T; t: R, O( G
favorable.8 z X3 q' M" k6 S3 D3 l
Testing is required to be performed on all combinations of terminals for the port under+ `7 y7 o' J Y
consideration, two at a time, including neutral and earth terminals, and one test with all
& u; l: t. g1 v7 ]current-carrying terminals of the port shorted together at once. Where analysis shows that the- e6 s8 Z, p: S8 C# a# F, T
test for one combination is representative of other combinations, tests may be omitted.0 I# f7 ~* [7 ^) y. [; f8 ]4 U
In addition to the requirements of 4.4.3, the short-circuit currents are to be recorded and if
9 o6 S! x& k. m/ qthey exceed the maximum rated current of the circuit, the maximum measured current shall be# O7 }( Y2 S9 @+ w1 P
provided in the installation manual for the purpose of coordination of overcurrent protection of# o) B3 ~3 }/ R- y3 \. `7 v
the external circuit conductors (see 5.3.2).
$ R9 h# t* V5 r# N1 P9 Z8 j9 b- JThe value(s) to be recorded and to be provided with the PCE instructions are the peak9 o) e [5 ^3 h$ h# j) K
current, and the highest of the RMS current values measured or calculated over a time period
& Q& b2 u& G3 c: ?7 T( G( o, F7 D+ Sas follows:
- T* j. Z% ~& m/ Ga) for AC signals, 3 cycles of the nominal AC frequency for the port under consideration, in
( g4 t+ J, D' @0 Uwhich case the value is to be stated as the 3-cycle RMS value;( G- ^+ y+ n( k7 B* A# h, l& A
b) for all signals, the duration of the short circuit from the time the short circuit is applied, until4 x2 r4 h- p4 x4 t, V. Q1 ?6 \+ P
the time the short circuit current is interrupted by a protective device or other mechanism, in- M: I- N% G4 h4 \, b+ p% K0 }5 j
which case the value stated is to include the RMS value and the time period in seconds;6 _* W; V* U. U5 r' o7 D& j* }: v
c) for short circuit tests that result in a continuous non-zero value, the steady-state RMS A8 F* o5 _- Z; D# c Z
value, in which case the value is to be stated as a continuous RMS value.; {7 j4 u( M8 T; P# L3 v
NOTE Where the intended use of the short-circuit current information requires a different type of measurement,
! [" l: e+ R% w) q2 l8 L4 u" Z# W. ?additional data may be provided. For example, for AC mains fault current contribution some utilities may prefer a6 c; @) ~# p1 F8 Z' e3 b4 _
¼-cycle RMS or other RMS calculation to the 3-cycle RMS above. |
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