The fifth paragraph of introduction as below:When a part 2 standard does not include additional requirements to cover hazards dealt with in Part 1, Part 1 applies.NOTE 2 This means that the technical committees responsible for the part 2 standards have determined that it is not necessary to specify particular requirements for the appliance in…
The fourth paragraph of introduction as below:If the functions of an appliance are covered by different parts 2 of IEC 60335, the relevant part 2 is applied to each function separately, as far as is reasonable. If applicable, the influence of one function on the other is taken into account.NOTE 1 Throughout this publication, when…
The third paragraph of introduction as below:This standard takes into account the requirements of IEC 60364 as far as possible so that there is compatibility with the wiring rules when the appliance is connected to the supply mains. However, national wiring rules may differ. IEC 60364-1 Low-voltage electrical installations – Part 1: Fundamental principles, assessment…
Clause 8.1.1 mentions that the test probe should be used when the appliance is under “normal use”, while clause 8.1.5 is evaluated prior to installation. Products such as these, which are delivered in several parts, generally require on-site installation. “Live parts of built-in appliances, fixed appliances and appliances delivered in separate units, shall be protected at least by basic insulation before installation or assembly.” Here a type of hazard during installation arises. An example is as follows: An air-conditioning…
standard give us a formula as below: the key requirement in note: The resistance of windings at the end of the test can be determined by taking resistance measurements as soon as possible after switching off and then at short intervals so that a curve of resistance against time can be plotted for ascertaining the…
The second paragraph of introduction as below:This standard recognizes the internationally accepted level of protection against hazards such as electrical, mechanical, thermal, fire and radiation of appliances when operated as in normal use taking into account the manufacturer’s instructions. It also covers abnormal situations that can be expected in practice and takes into account the…
Please check below two photos for test probe B Please pay attention to Image 3, there are four red arrows facing the four right angles. Actually, image 3 shows the incorrect test probe, image 2 shows the correct test probe. In some special cases, such as the diameter of the hole is 12.6mm, the test…
There is a note in table 17 and table 18 as “For working voltages > 10 V and ≤ 630 V, if the voltage is not specified in the table, the values of creepage distances may be found by interpolation.”. If the operating voltage is not the value listed in the table, then we usually…
Based on the names of the clauses, the reader can also get an idea of what to focus on in each clause. Most end-product standards can actually be read through the table of contents to get a general idea. For inexperienced users of the standard, we recommend that when you see the clause names, you…
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