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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:

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8.6 If units or technical data are expressed by symbols, the following symbols shall be used:
. b" L6 A- c' ?5 n/ In0 ............................ no-load speed8 l* C; |- K; ]2 i7 b/ ^5 v7 l
8.1 Tools shall be marked with:
! _( L/ {. v% E0 g5 S, l* i2 K– the year of manufacture.6 M2 g9 N4 W- r4 H
– rated voltage(s) or rated voltage range(s), in volts. Tools for star-delta connection shall be
0 y$ U- v# L! ]0 a& bclearly marked with the two rated voltages (for example 230 Δ/ 400 Y);
+ g8 o. y1 w$ H1 }/ F5 x4 Y– symbol for nature of supply, unless the rated frequency is marked. The symbol for nature
" e! o  f( U$ X# M9 Hof supply shall be placed next to the marking for rated voltage;
- L/ f+ }" O- B! o& n4 O: b5 p: O- a– rated input, in watts or rated current, in amperes. The rated input or current to be marked( r' ^. a! j! J: f& `0 m2 _
on the tool is the total maximum input or current that can be on circuit at the same time. If; K! S: J$ g6 ^8 D2 d% y
a tool has alternative components which can be selected by a control device, the rated
; t5 Z3 o# `& w% l' }) u) }input or rated current is that corresponding to the highest loading possible;
7 P+ x9 o: q' I3 S$ q– name or trade mark or identification mark and address of the manufacturer or any other
  e6 |! m0 `3 ^agent responsible for placing the tool on the market;3 @2 j5 E& _% G% P* ]( x
– model or type reference;# B( Q7 R# M* Q& Z$ ^' p
– symbol for class II construction, for class II tools only;  F% U( w  ~8 r: H( f- L  D1 _5 J
– IP number according to degree of protection against ingress of water other than IPX0. If
) j5 ]& d! P2 O, Q$ tthe first numeral for the IP numbering is omitted, the omitted numeral shall be replaced by) B; N8 g; \& N  }9 Z8 i: `. f% t. O
the letter X, for example IPX5;6 g" d7 p: w* S9 p" Q4 J# g; B" _
– “WARNING – To reduce the risk of injury, user must read instruction manual” or the sign, T- R' I! F- O
M002 of ISO 7010F
$ \* V! t, G- S& A& F- w0 |9 Y  u8).; i. F8 k+ {0 v: Y
If used, the word “WARNING” shall be in capital letters not less than 2,4 mm high and$ r9 p8 q3 a* h- k. y$ _
shall not be separated from the cautionary statement.: v3 m8 U) X" T" k% k
If used, the statement shall be verbatim except the term “operator’s manual” or “user
& Z$ ^9 i7 P. s& E; ]& ]* B0 @guide” may be used for the term “instruction manual”;! i+ e7 N9 T* S
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& {) D% k( s- I" K! P
名牌上的转速 大部分都是标明空载转速
0 Z! }3 b( ]+ k: Q但是也看过一些 是标明最高转速/ V# {& P3 w4 `$ g" ?1 r

* ~1 S1 a, d$ N; U4 t) C: H2 f! B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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