23.3 Electronic cord switches and electronic independently mounted switches shall, without5 T/ w2 n' _" k/ Y
endangering their surroundings, withstand the short circuits they may be subjected to.
4 Z* U7 I, X8 Z* u: @: KCompliance is checked by the following test.
j+ o0 J7 f, e5 U( [' g, C4 c7 `The switch is tested in a substantially non-inductive circuit in series with a load impedance and
+ ]! E' \& M) | r% la device for limiting the let-through I2t.* _& q8 `5 X. t$ X2 n0 S
The prospective short circuit of the supply shall be 1 500 A r.m.s. at a voltage equal to the3 \ L# r; `9 p& P- L2 t. L
rated voltage of the switch under test.( ^6 ?; O" W% u% V2 e
The prospective let-through I2t value shall be 15 000 A2s.# O5 @* k1 G& D0 Y9 y# t( @( s
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问题1:电子开关的短路试验如何做?
, g; E3 @% a) i* X1 ~; l8 P# H问题2:这些参数如何实现?8 R1 C s5 Q9 k N' |( V
5 z" f) J$ V' P3 G- lNOTE 7 Attention is drawn to thefact that solenoid operated pneumatic means may result in an unintentional / m# z% g7 O# j5 `$ Z3 ~, Y
synchronization. 问题3:这一句是什么意思? 7 B3 q/ E; m& w) Q
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