|
|
I think your question can refer to EN60601-1/IEC60601-1 in 4.10.2.
( o; s/ i) w, oPlease correct me if any.3 n* d, M4 I) g) S
Thanks,
! i' G! u' E. \6 v! K4 p/ [ O' {! k/ {
For ME EQUIPMENT intended to be connected to SUPPLY MAINS, the following RATED voltages
1 p4 ?$ s+ i" P- G0 A9 q, nshall not be exceeded:
) J; G& @, z* |& [# \4 A– 250 V for HAND-HELD ME EQUIPMENT;5 s: n7 x, z2 m( [# X9 C+ [2 S
– 250 V d.c. or single-phase a.c. or 500 V polyphase a.c. for ME EQUIPMENT and ME SYSTEMS
6 b$ E0 p/ B/ r; q3 {with a RATED input ≤ 4 kVA; or$ u$ s1 ?- r+ g8 U& x! K2 U
– 500 V for all other ME EQUIPMENT and ME SYSTEMS./ b7 l0 }/ ~& B$ r& N; k& R
SUPPLY MAINS in this standard shall be assumed to have the following characteristics:! k' a2 }# z! [
– overvoltage category II for mains transients unless a higher category is specified by the
7 O) R& o9 d$ P5 HMANUFACTURER;5 U6 d6 l( h9 e5 N
– no voltage in excess of 110 % or lower than 90 % of the NOMINAL voltage between any of
* v% E! H3 d# `( ethe conductors of the system or between any of these conductors and earth (see 7.9.3.1);
9 T: a ?- k' g$ l3 ]NOTE 1 IEC 60601-1-2 contains requirements and tests for voltage dips, short interruptions and voltage
8 X& t% s: u6 n1 z' u ~8 S2 @variations on the SUPPLY MAINS. See also 1.3.
4 M& A2 L. `8 R7 X1 X3 ~– voltages that are practically sinusoidal and forming a practically symmetrical supply
$ I. }; [0 A9 J( Nsystem in case of polyphase supply;
5 \9 T" j$ _, ?( K– a frequency of ≤ 1 kHz;! q- H9 W1 L4 I! ^9 ]6 r2 W
– a frequency deviation of ≤ 1 Hz from the NOMINAL frequency up to 100 Hz and ≤ 1 % from/ \7 F' T6 D+ C% }: k" Z9 F
the NOMINAL frequency from 100 Hz to 1 kHz;
3 z7 n0 c$ F, X5 q( G( @ w– the protective measures as described in IEC 60364-4-41;+ {2 x8 B: [5 g" U
NOTE 2 If ME EQUIPMENT or an ME SYSTEM is intended to be operated from a SUPPLY MAINS with8 g# T; @6 h, U
characteristics different from the SUPPLY MAINS described in this subclause, additional safety measures could: Z& A% \/ E1 h; n% L
be necessary.2 e5 T+ W3 G3 K, V5 m% G
– a d.c. voltage (as measured by a moving coil meter or equivalent method) having a peakto-
1 m g5 Z( I. f- Dpeak ripple not exceeding 10 % of the average value.: W; c9 n' `, h7 x
Where peak-to-peak ripple exceeds 10 % of the average value, the peak voltage has to be2 X+ I- ]; y; m8 d3 b1 T, P2 Y
applied. |
|
/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