关于EN454的一个问题
如何理解5.3.1？ The electrical equipment shall comply with EN 60204-1, with the following requirements given in 5.3.2, 5.3.3,
5.3.4 and 5.3.5.，是产品必须符合EN 60204-1,然后还必须符合5.3.2, 5.3.3,5.3.4 and 5.3.5. ，还是必须符合EN 60204-1的5.3.2, 5.3.3,5.3.4 and 5.3.5的要求的那一部分？今天感到很凌乱啊！
下面是 EN454 5.3的全文
5.3 Electrical hazards
5.3.1 General
Electrical equipment – for example switches – that may be exposed to water, e.g. during cleaning, shall be
protected to an appropriate IP-rating according to EN 60529 and EN 60204-1.
The electrical equipment shall comply with EN 60204-1, with the following requirements given in 5.3.2, 5.3.3,
5.3.4 and 5.3.5.
5.3.2 Safety requirements related to electromagnetic phenomena
The machines shall have sufficient immunity to electromagnetic disturbances to enable them to operate safely
as intended and not fail to danger when exposed to the levels and types of disturbances for the intended use
of the machine (see EN 61000-6-1).
The manufacturer of the machines shall design, install and wire the equipment and sub-assemblies taking into
account the recommendations of the suppliers of these sub-assemblies.
5.3.3 Protection against electric shock
The electrical equipment shall comply with EN 60204-1:2006, Clause 6.
5.3.4 Power circuits
Devices for detection and interruption of over-current shall be applied to each live conductor in compliance
with EN 60204-1:2006, 7.2.3. In case of single phase machines, no such device is required for the earthed
neutral conductor.
5.3.5 Protection against earth faults in control circuits
For machinery supplied from a single-phase conductor and an earthed neutral conductor the single pole
interruption shall be in the phase conductor (see EN 60204-1:2006, 9.4.3.1).
EN 60204-1以及EN 454中的5.3.2, 5.3.3, 5.3.4，5.3.5
以上都要满足。
shall 表示应该满足的要求，视具体情况而定，如某些要求不适用可以不遵守。
如果是must，则不管什么情况都必须遵守。 这是看英文标准的习惯的问题，EN 454的5.3.1讲了shall comply with EN 60204-1, with the following requirements...，这里的following就点明了是本标准下面的5.3.2、5.3.3、5.3.4和5.3.5给出的要求，而不是EN 60204-1的要求。 stey 发表于 2018-3-21 15:59
EN 60204-1以及EN 454中的5.3.2, 5.3.3, 5.3.4，5.3.5
以上都要满足。
shall表示“必须”的意思，而should才是表示“应该”，即可以选择的意思。 The electrical equipment shall comply with EN 60204-1, with the following requirements given in 5.3.2, 5.3.3,2
这句话的准确意思是：电器设备应符合EN 60204-1和遵守5.3.2、5.3.3.2规定的要求。
这里的“应”是欧美标准常用表达方式，就是必须的意思。 学习了，:lol
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