关于电源的定义

202meng

广东安规检测
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对于电源的概念，一直很模糊，医用设备电气安全通用要求中也没有明确的解释，想请教各位前辈，对于外部电源是怎样界定的，如果只作为充电功能而不能单独为医用设备供电，这样的设备算作外部电源吗？医用设备自身又属于外部电源供电设备吗？谢谢各位的指导！

cny0933

I think your question can refer to EN60601-1/IEC60601-1 in 4.10.2.
+ G% O! ^" n: DPlease correct me if any.
Thanks,
4 @3 e- s( H, {6 x
8 z& s5 {7 I  P; RFor ME EQUIPMENT intended to be connected to SUPPLY MAINS, the following RATED voltages
$ ]' a- k5 r# t+ Vshall not be exceeded:
' q: s6 Z7 r" D  t– 250 V for HAND-HELD ME EQUIPMENT;
  E* v' B3 O3 f; P– 250 V d.c. or single-phase a.c. or 500 V polyphase a.c. for ME EQUIPMENT and ME SYSTEMS
4 m# h# j1 q* y# [with a RATED input ≤ 4 kVA; or
' C7 M* L1 T& ^; q* G– 500 V for all other ME EQUIPMENT and ME SYSTEMS.
SUPPLY MAINS in this standard shall be assumed to have the following characteristics:
– overvoltage category II for mains transients unless a higher category is specified by the
MANUFACTURER;
6 b, Z! o) Y4 m3 y1 h3 R0 G. |% ~" E– no voltage in excess of 110 % or lower than 90 % of the NOMINAL voltage between any of
: B8 U6 X( O! C: Ythe conductors of the system or between any of these conductors and earth (see 7.9.3.1);
# ?! _1 K3 [7 NNOTE 1 IEC 60601-1-2 contains requirements and tests for voltage dips, short interruptions and voltage
7 A2 \, V3 F+ Y& f2 F0 }; uvariations on the SUPPLY MAINS. See also 1.3.
7 h5 P. Z4 S& m" X* q– voltages that are practically sinusoidal and forming a practically symmetrical supply
system in case of polyphase supply;
5 K0 G+ G" k3 g( N% d– a frequency of ≤ 1 kHz;
* U. D" `( W* \/ J9 D' ~– a frequency deviation of ≤ 1 Hz from the NOMINAL frequency up to 100 Hz and ≤ 1 % from
, e5 ^+ o0 S4 G# h( w* nthe NOMINAL frequency from 100 Hz to 1 kHz;
– the protective measures as described in IEC 60364-4-41;
NOTE 2 If ME EQUIPMENT or an ME SYSTEM is intended to be operated from a SUPPLY MAINS with
characteristics different from the SUPPLY MAINS described in this subclause, additional safety measures could
7 n! L1 x; T* ^- o0 \. u: v: `be necessary.
4 d# {. U0 i8 b* M2 Q2 Y  \# w– a d.c. voltage (as measured by a moving coil meter or equivalent method) having a peakto-
! l+ ~9 E2 t  W/ \peak ripple not exceeding 10 % of the average value.
7 v6 ^% B+ d5 K7 GWhere peak-to-peak ripple exceeds 10 % of the average value, the peak voltage has to be
applied.

cyk8421

根据安规标准电源分：1.电网供电的设备，2.内部电源，特定电源，而无你说的外部电源，其实外部电源应该就是1.电网供电的设备

amu_zhu

个人意见，仅供参考
2 \' Z4 j9 n7 _+ p  U如果一个设备，使用适配器供电，产商呢又不提供适配器，
于是呢，就只定义主机为需认证的设备，也就是说，适配器是额外的设备，跟厂商没关系。
在这种情况下，可以理解为此主机是用外部电源供电

cny0933

我想我貼的應該是電網供電的部份，如果有錯請指正!
Thanks,
) B0 _! u4 `' \1 q, o5 @

cyk8421

用适配器供电的设备也被称为由特定电源供电。

202meng

amu_zhu 发表于 2013-2-4 08:47
0 N$ @- ^0 [5 v7 ?2 b个人意见，仅供参考
如果一个设备，使用适配器供电，产商呢又不提供适配器，
于是呢，就只定义主机为需认 ...

" O' L8 {9 g* x3 d2 T' U那如果设备是锂电池供电，充电器只做充电作用，不能单独供电，这样的设备，应该算作内部电源供电设备吗？还是也可以算作外部电源供电呢？

202meng

cyk8421 发表于 2013-2-4 19:04
用适配器供电的设备也被称为由特定电源供电。

充电器算作特定电源供电吗？关于特定电源有没有明确的范围或定义呢？这个我始终没有找到。。还希望高手能够指点

202meng

cny0933 发表于 2013-2-4 15:48
% N* f' `0 A, K4 M$ A我想我貼的應該是電網供電的部份，如果有錯請指正!
$ `. w/ [: O( }Thanks,

是的！用于ME设备或系统的供电网

cyk8421

特定电源的定义：不是供电网，且与供电网隔离的电源