EN 55014-1 标准解读2

4.1.1.1 The limits in columns 2 and 3 shall be met on the phase(s) and the neutral of the
mains terminals of all appliances except those of electric tools.
4.1.1.2 On additional terminals of appliances as well as on load and additional terminals of
regulating controls incorporating semiconductor devices the relaxed limits given for "additional
terminals" in columns 4 and 5 apply.
Terminals which may be used as either mains terminals or load/additional terminals are
subject to the limits for mains terminals.
No terminal voltage limits apply for leads, which are not easily extensible by the user
(permanently connected, or provided with a specific connector), which are shorter than 2 m,
and which connect the equipment with an auxiliary apparatus or device, (e.g. semiconductor
speed controls, power plugs with AC-DC converters).
No terminal voltage limits apply to leads integrated in the suction hose of vacuum cleaners,
even if the length exceeds 2 m.
NOTE For the measurement at the load terminals and additional terminals of regulating controls incorporating semiconductor devices see 5.2.4, for additional terminals of other appliances see 5.2.3.

针对4.1.1.1和4.1.1.2这两个条款，是说明市电供电的家用器具（不包括电动工具）的端子要满足的限值。端子包括三种：电源端子、负载端子或者控制端子。标准中用的additional terminal，其实主要指的就是控制端子（个人看法）。
table1 的第2列和第3列，对应的电源端子的限值。L和N线都要满足限值。第4列和第5列是对除电源线以外其他的additional terminal端子的限值。我们可以发现电源端子的限值要比additional terminal端子的限值要严格。

如果电源端子和负载端子重合，则使用电源端子的限值，这也满足了要符合更严格测试限值的要求和理念。

如果是单独的additional terminal，则有要求的长度满足>2m,小于2m的是不做测试要求的。
此处有个特列，就是吸尘器的动力吸管，即使长度大于2m，也没有测试要求，其实这个可以理解的，因为动力吸管没有电结构部分，它完全靠的是电机吸收空气产生的动力，这个测试是没有意义的，所以就没有限制要求，即使长度超过了2m。

4.1.1.3 For the mains terminals of electric tools the particular limits given in columns 6 to 11
apply according to the rated power of the motor, the power of any heating device is to be
excluded (for instance heating power in a blower for plastic welding). For the load terminals
and additional terminals of electric tools, columns 4 and 5 apply without further relaxation.

条款4.1.1.3和4.1.1.1和4.1.1.2是一样的，不过对象是electric tool（电动工具）。使用的限值是CE2中的限值。
在电动工具中，根据电机功率的大小对电源端子的限值分为三种情况，这个和家用电器是不同的。注意这里说的是电机功率，不是产品标称功率。一般有电机的产品其实功率都可以”虚标“的，也就是说实际功率，比标称的功率要小。这个是标准中允许的，安规标准中，关于电机的功率，只有上偏差限值，没有下偏差。

关于table1最后的*号的说明，实际情况是这样的，在以前的测试中，准峰值和平均值的测量时分别由准峰值测量接收机和平均值测量接收机单独完成的，如果在使用准峰值测量接收机测量准峰值时，准峰值已经低于了平均值的限值，则可以省略掉平均值测量的步骤，因为根据数学关系，我们知道准峰值肯定比平均值大，则我们可以断定，平均值肯定低于平均值的限值。不过现在准峰值和平均值的测量集成在一台设备里面，这个条款已经没有什么意义了，我们了解它为什么出现的原因即可。

4.1.1.4 Limits for electric fence energizers apply to
a) the fence terminals on all energizers (columns 4 and 5 of Table 1);
b) the mains terminals on energizers designed for connection to the mains (columns 2 and 3
of Table 1);
c) the battery terminals on energizers designed for operation from a battery (columns 4 and
5 of Table 1).
However, no limits apply to the battery terminals of energizers with built-in batteries which
cannot be connected to the mains supply, or energizers with external batteries if the
connecting lead between the energizer and the battery is shorter than 2 m and is not
applicable of being easily extended by the user without special tools.
Type D energizers, according to IEC 60335-2-76, are measured as battery operated
energizers with connecting leads between the energizer and the battery greater than 2 m in
length.
NOTE In practice, the fence wire can also act as an active source of disturbances, due to the high-voltage discharges, in particular to radio and telecommunication networks. Manufacturers of electric fence energizers should instruct the users to eliminate discharge points such as touching vegetation or a broken fence wire.

4.1.1.4描述的对象是电栅栏激发器，坦白的讲，这种产品我没有见过，也不了解产品的结构，根据网上搜索的信息说，这种产品是布置在围墙上的，如果有外来人强行进入，会报警。和监控的效果差不多吧。

我就了解这么多，由于没有接触过这种产品，不敢多说，如果有朋友了解这种产品，请出来指点下。谢谢了。

如果从这个条款所处的标准的结构上讲，同样是描述某种产品的端子所适用的限值的，和家用电器、电动工具的分析方法是类似的。如果见到这种产品，根据端子的作用，确定相关的限值即可。

4.1.1.5 For battery operated appliances (with built-in batteries, as well as with external
batteries) which can be connected to the mains the limits of columns 2 and 3 of Table 1 apply
to the mains terminals.
No radio disturbance limits apply to appliances with built-in batteries, which cannot be
connected to the mains supply.

No radio disturbance limits apply to appliances with external batteries, if the connecting lead
between appliance and battery is shorter than 2 m. If the connecting lead is longer than 2 m
or easily extendable by the user without special tools, then the limits of columns 4 and 5 of
Table 1 apply to these leads.