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楼主: hmj347

[IEC标准产品] 电动类器具铭牌上的转速是指空载转速吗?

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发表于 2008-7-14 15:54 | 显示全部楼层

电动工具一般确实是标空载转速, 但标准没有强制要求标:

广东安规检测
有限公司提供:
8.6 If units or technical data are expressed by symbols, the following symbols shall be used:
( ~8 U5 H2 F) \n0 ............................ no-load speed
2 \7 U! S8 _' C+ k/ b8 M- b
8.1 Tools shall be marked with:
! a, J" q! a! g  v" }0 e! ~' h– the year of manufacture.
4 l  f+ }  {8 C; b  s– rated voltage(s) or rated voltage range(s), in volts. Tools for star-delta connection shall be$ S+ D- {) j, t' U4 C9 r7 }2 L
clearly marked with the two rated voltages (for example 230 Δ/ 400 Y);
+ w+ s- V* d( E, K& w& n7 t– symbol for nature of supply, unless the rated frequency is marked. The symbol for nature' X( d6 ~% N0 l' i8 i, C
of supply shall be placed next to the marking for rated voltage;
( D4 ^3 [0 O) T# ^– rated input, in watts or rated current, in amperes. The rated input or current to be marked' C2 n- ^& a- h" O5 I) o- N0 g+ p
on the tool is the total maximum input or current that can be on circuit at the same time. If# j# A" P- t' ~
a tool has alternative components which can be selected by a control device, the rated
/ c9 J) r9 d" ]+ D" sinput or rated current is that corresponding to the highest loading possible;4 V' @: S8 O; @6 a% z6 T
– name or trade mark or identification mark and address of the manufacturer or any other
( J6 r+ x0 \+ {/ j& d+ j7 cagent responsible for placing the tool on the market;  O) u6 q% _0 ^% S+ ]: r5 p
– model or type reference;2 f; i% P; k# [+ V; u+ R0 {& K- |
– symbol for class II construction, for class II tools only;6 ^4 O6 L- j8 f+ K- T4 @
– IP number according to degree of protection against ingress of water other than IPX0. If5 m/ n' a5 y. D" ^0 t
the first numeral for the IP numbering is omitted, the omitted numeral shall be replaced by
, j" X7 S( ?5 m; ithe letter X, for example IPX5;! {% `0 {6 m, ~+ }
– “WARNING – To reduce the risk of injury, user must read instruction manual” or the sign
9 ~5 g* x, s% ^5 F- _! `* lM002 of ISO 7010F
) f, ]9 A: Y. L4 ]8).
' b+ M4 u9 a; O8 `* ]1 gIf used, the word “WARNING” shall be in capital letters not less than 2,4 mm high and; N7 k9 l% D# R. X- B5 ~3 J
shall not be separated from the cautionary statement.5 i+ W: X3 x, N/ E' e" W
If used, the statement shall be verbatim except the term “operator’s manual” or “user
: M7 Z# p6 u0 ]7 fguide” may be used for the term “instruction manual”;
0 U- ?0 w5 L6 [% Z8 n# p4 V3 O& ]Additional markings are allowed, provided they do not give rise to misunderstanding.
发表于 2008-7-23 16:36 | 显示全部楼层
如果是电动机或motor,标的是理论转速。一般鼠笼式电动机有转速差,即转子转速滞后定子内的磁场转速。电动类器械的实际空载输出转速比理论转速只差一点点。作为一个机械设计人员,电动类器具铭牌上的转速是通过其它参数决定的。如所需的整体功率,所要输出的转速。再来决定所需要电动类器械的原始输入转速。但一部机械的设计,设计人员应最关心的是电动类器械的输出功率和转矩,其次才是转速。
发表于 2008-7-24 08:39 | 显示全部楼层
标准没有要求说一定要显示转速
$ s7 ^$ s4 V7 M% \0 s5 s8 x- [名牌上的转速 大部分都是标明空载转速
2 J6 Y9 `+ U) x5 _但是也看过一些 是标明最高转速' Z& L5 s1 N: ~" S3 @  P

$ i; P. ^# m* v看厂家而异
发表于 2008-7-24 21:18 | 显示全部楼层
带额定负载时的额定转速.
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