关于电源的定义

202meng

广东安规检测
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IEC60335试验指甲

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！
2 [' Z  v( A% k! y

cny0933

I think your question can refer to EN60601-1/IEC60601-1 in 4.10.2.
Please correct me if any.
6 u6 [) y3 x( |  {( g' }Thanks,

4 s" N* |+ ?) b' o( RFor ME EQUIPMENT intended to be connected to SUPPLY MAINS, the following RATED voltages
/ _! L, P& Z1 M) B6 |shall not be exceeded:
" l3 i# w8 ^0 ?$ _, K6 B– 250 V for HAND-HELD ME EQUIPMENT;
. U7 f0 c( R4 p– 250 V d.c. or single-phase a.c. or 500 V polyphase a.c. for ME EQUIPMENT and ME SYSTEMS
with a RATED input ≤ 4 kVA; or
  z% E- R" _# T, H' b% x% e– 500 V for all other ME EQUIPMENT and ME SYSTEMS.
& i. d/ d+ }& C$ T! rSUPPLY 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;
) v" s. q9 g* v* ~; u9 S5 d2 v- |6 F– no voltage in excess of 110 % or lower than 90 % of the NOMINAL voltage between any of
& ?6 A  S7 y* V( a" B- ^the conductors of the system or between any of these conductors and earth (see 7.9.3.1);
NOTE 1 IEC 60601-1-2 contains requirements and tests for voltage dips, short interruptions and voltage
variations on the SUPPLY MAINS. See also 1.3.
– voltages that are practically sinusoidal and forming a practically symmetrical supply
system in case of polyphase supply;
– a frequency of ≤ 1 kHz;
– a frequency deviation of ≤ 1 Hz from the NOMINAL frequency up to 100 Hz and ≤ 1 % from
the NOMINAL frequency from 100 Hz to 1 kHz;
– the protective measures as described in IEC 60364-4-41;
5 t' `% Q! j/ F" G* [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
be necessary.
9 T) o1 s6 u3 c+ g– a d.c. voltage (as measured by a moving coil meter or equivalent method) having a peakto-
peak ripple not exceeding 10 % of the average value.
. N" H$ l6 A! p4 sWhere peak-to-peak ripple exceeds 10 % of the average value, the peak voltage has to be
9 `4 W- N) c2 t0 y- o: U, W( q0 Sapplied.

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
如果一个设备，使用适配器供电，产商呢又不提供适配器，
  Y: F3 `" \+ X' m! p3 \4 A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。
0 H4 F# z! f3 J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,
7 a- @; Z" e) i2 u/ o

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
$ o+ }! n5 z/ j8 Y  P个人意见，仅供参考
; V6 x! F0 K* S' U) c; _$ w& d如果一个设备，使用适配器供电，产商呢又不提供适配器，
3 a; R2 b) y; Q: J8 h于是呢，就只定义主机为需认 ...

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
  o: O* G4 n0 k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
: H; d, ^6 V$ |7 j# `我想我貼的應該是電網供電的部份，如果有錯請指正!
Thanks,

; W7 _, i8 }" E! c! W, I. d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