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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:
$ v/ b- ]$ h4 x5 Rn0 ............................ no-load speed
8 E+ d( }- O( a- [* i/ ~  O
8.1 Tools shall be marked with:
# b+ c6 ?  t( |  K6 W– the year of manufacture.+ w& m7 Z" P- G5 }0 z# Z
– rated voltage(s) or rated voltage range(s), in volts. Tools for star-delta connection shall be6 y0 Z! c. v# L0 o
clearly marked with the two rated voltages (for example 230 Δ/ 400 Y);+ s, [% s& y" T4 [9 E' k- B
– symbol for nature of supply, unless the rated frequency is marked. The symbol for nature
( a9 s, t+ Z6 C2 W2 yof supply shall be placed next to the marking for rated voltage;
9 q  K% `! ^' D  E; H– rated input, in watts or rated current, in amperes. The rated input or current to be marked# |% O( o  j4 ^( C6 f
on the tool is the total maximum input or current that can be on circuit at the same time. If
3 q1 n( d: Q) A; F  L7 I8 e6 Ma tool has alternative components which can be selected by a control device, the rated. k4 w4 Q' H9 C6 m: Q5 c2 h
input or rated current is that corresponding to the highest loading possible;
# q" ?0 f% M1 x3 [0 Q5 U0 o2 b– name or trade mark or identification mark and address of the manufacturer or any other9 j/ s. A7 S# ?  [" N: M2 ~
agent responsible for placing the tool on the market;
; |  M( Z6 d' f, A  s0 |% h" G– model or type reference;: D5 v; E" R. f  G( Z- W" `
– symbol for class II construction, for class II tools only;1 T& X1 Z7 v$ r/ t$ A1 T" N# E
– IP number according to degree of protection against ingress of water other than IPX0. If. f  g' I% j3 X- P
the first numeral for the IP numbering is omitted, the omitted numeral shall be replaced by* I% e/ c$ S2 f! @5 r
the letter X, for example IPX5;' h* K2 f. K8 E& ]5 _- C/ J" |3 R
– “WARNING – To reduce the risk of injury, user must read instruction manual” or the sign1 C2 U  m/ H$ U
M002 of ISO 7010F3 a) Z2 _6 @9 f) u7 v! L
8).
3 A2 c! Z. `: V; s! eIf used, the word “WARNING” shall be in capital letters not less than 2,4 mm high and
6 V5 V. x2 S. y% Z8 [( b$ X& qshall not be separated from the cautionary statement.$ d4 J% ~, w2 |; u9 b% X
If used, the statement shall be verbatim except the term “operator’s manual” or “user4 _  @3 H1 m; y: G
guide” may be used for the term “instruction manual”;
) K0 N# c( t, ]; c7 RAdditional 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
5 Q9 @* u1 W; j8 J$ `名牌上的转速 大部分都是标明空载转速& W- X/ d4 k! h9 ^- M: F
但是也看过一些 是标明最高转速/ H8 V4 [9 m+ S' n, G3 e

. N  _" y5 N; U# `6 ~  d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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