作业指导书 nm300 14

1.0 Scope适用范围：

至少有一项功能要依靠用电来完成的所有玩具。

2.0 Equipment设备:

(1)Feeler gauge

测隙塞规

(2)Digital Caliper

数显卡尺

(3)Measuring microscope (if necessary).

测量显微镜（如有需要）

3.0 Procedures程序：

3.1 Clearance Measurement电气间隙测量：

(1) A “through air” spacing is the shortest distance and m ay bend corners and/or

locate over insulating material. It is not, necessarily a straight line measurement.

It is normally “through air” and not taken through materials, such as base.

一个“通过空气”所测得的间距是最短的距离，而且这个间距能弯折且/或

沿着绝缘材料。它不一定是需要进行直线测量。它通常是“通过空气”而

不是通过材料如底部。

(2) The following example illustrates the measuring sequences and positions:

下面的图片展示了测量的步骤和位置：

(3) In reference to Figure 1, first, measure the distance from the corner of the bus #1

to the corner of the base #4.

参照图1，首先，测量从bus的边角＃1到base的边角＃4的距离。

(4) Then, measure the side of the base #4 to #5.

然后，测量BASE的侧边＃4到＃5的距离.

(5) The sum of data obtained from (3) and (4) is the clearance value.

步骤(3) 和 (4)中测得的数值的总和就是电气间隙值.

(6) Refer to the specifications listed below and determine the compliance.

参照下面所列的规定值来判断其符合性。

3.1 Creepage Distance Measurement 爬电距离测量：

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(1) Shortest path between two conductive parts or between a conductive part and

the accessible surface of the toy, measured along the surface of the insulating

material. (*3.4.1*)

玩具中的两导体部件或一个导体部件到一个可触及表面之间的最短距离，

测量沿着绝缘材料表面进行。

(2) The following example illustrates the measuring sequences and positions:

下面的图片展示了测量的步骤和位置：

(3) In reference to Figure 1, first, measured the distance along the neck of the base

#2 to #3.

参照图1，首先，测量沿着base颈端＃2到＃3的距离。

(4) Second, measure the distance at the top of the base #3 to #4.

第二步，测量base的顶部＃3到＃4的距离。

(5) Third, measure the distance at the side of the base #4 to #5.

第三步，测量base的侧边＃4到＃5的距离。

(6) The sum of (3) to (5) gives the value of creepage distance.

步骤(3) 到 (5)中测得的数值的总和就是爬电距离值。

Figure 1

Note: Figure 1 illustrate a basic construction of an electrically line bus secured to an insulated base which is mounted to a grounded metal bracket.

注：图 1 是一个安装在(固定在接地金属支架上的)绝缘基座上的有轨电车基本结构的图解说明。

4.0 Specification规范：

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