|
|
I think your question can refer to EN60601-1/IEC60601-1 in 4.10.2.+ X- _5 K* D+ ]1 L
Please correct me if any.& i& H$ {- ^" d3 Q, J
Thanks, & l! C2 H. R3 `+ m' i
* O& H' p1 Z5 D# B: Q& n/ [! HFor ME EQUIPMENT intended to be connected to SUPPLY MAINS, the following RATED voltages
4 G, O+ X* H) T6 k$ {, K7 fshall not be exceeded:
" f6 F; {$ e" v& m6 L9 L/ ^; l" V– 250 V for HAND-HELD ME EQUIPMENT;
5 \( b2 T3 [8 n/ K( R. Z8 W– 250 V d.c. or single-phase a.c. or 500 V polyphase a.c. for ME EQUIPMENT and ME SYSTEMS
$ D9 g) y: [" Q, b9 {2 k+ }7 Nwith a RATED input ≤ 4 kVA; or; O" Y& I' c: f
– 500 V for all other ME EQUIPMENT and ME SYSTEMS.
+ B7 V3 I1 y! {8 t& ESUPPLY MAINS in this standard shall be assumed to have the following characteristics:
/ P* c; B) u- W |& S– overvoltage category II for mains transients unless a higher category is specified by the) c' c) K/ @( T5 N
MANUFACTURER;) {4 f$ w/ y: L7 l* l" E" L
– no voltage in excess of 110 % or lower than 90 % of the NOMINAL voltage between any of) t1 W" q+ o9 E! S' v
the conductors of the system or between any of these conductors and earth (see 7.9.3.1);2 M: x( o1 C4 |' P
NOTE 1 IEC 60601-1-2 contains requirements and tests for voltage dips, short interruptions and voltage
3 p6 Q& V: h! r& @- F3 |# Uvariations on the SUPPLY MAINS. See also 1.3.! `0 g+ _* S. V& b! U& N# J/ O9 x
– voltages that are practically sinusoidal and forming a practically symmetrical supply a( ^! i9 A9 v
system in case of polyphase supply;
: b+ K) h) j2 {9 R, g7 O1 s– a frequency of ≤ 1 kHz;3 T& e Q0 T: Z6 A; W; x
– a frequency deviation of ≤ 1 Hz from the NOMINAL frequency up to 100 Hz and ≤ 1 % from- y6 I0 R' z Q
the NOMINAL frequency from 100 Hz to 1 kHz;9 Q/ ^! @3 U2 r, E- c( r* e V
– the protective measures as described in IEC 60364-4-41;
& L8 d7 i5 i7 x9 jNOTE 2 If ME EQUIPMENT or an ME SYSTEM is intended to be operated from a SUPPLY MAINS with
) Z) U5 W7 p6 d" vcharacteristics different from the SUPPLY MAINS described in this subclause, additional safety measures could1 I5 t3 W, V/ e' W
be necessary. D+ G9 t" T+ E: T) Y" O* h5 Y
– a d.c. voltage (as measured by a moving coil meter or equivalent method) having a peakto-* B( g i, S; ]- L
peak ripple not exceeding 10 % of the average value.) \" e0 n& ]& m3 j: V
Where peak-to-peak ripple exceeds 10 % of the average value, the peak voltage has to be
4 j5 z& R$ }2 iapplied. |
|
/1 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2013-1-31 09:36
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡
楼主