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ZS for an motor run off an inverter

MrJack96
Hi guys. How can you test the zs of a motor run off an inverter drive?
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  • 0
    In terms of the recommendation that the electronics will limit the current to a safe level, this may well be true, but caution is required.


    BS 7671 contains the answer as to what to do ... and from previous experience, davezawadi might not like it (sorry David ?).


    Where reliance on electronic equipment such as power converters to provide electric shock is necessary, this is covered by Regulation 419.2 of BS 7671, which, in addition to stating the voltage the output has to achieve in the relevant time given in Chapter 41 for protection against electric shock, states the following:

    The power electronic convertor shall be one for which the manufacturer gives adequate methods for the initial verification and periodic inspection and testing of the installation.



    So, the answer is "Follow manufacturer's instructions". And if they don't provide any for this purpose, you can't rely on that method of protection against electric shock according to BS 7671.
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  • 0
    In terms of the recommendation that the electronics will limit the current to a safe level, this may well be true, but caution is required.


    BS 7671 contains the answer as to what to do ... and from previous experience, davezawadi might not like it (sorry David ?).


    Where reliance on electronic equipment such as power converters to provide electric shock is necessary, this is covered by Regulation 419.2 of BS 7671, which, in addition to stating the voltage the output has to achieve in the relevant time given in Chapter 41 for protection against electric shock, states the following:

    The power electronic convertor shall be one for which the manufacturer gives adequate methods for the initial verification and periodic inspection and testing of the installation.



    So, the answer is "Follow manufacturer's instructions". And if they don't provide any for this purpose, you can't rely on that method of protection against electric shock according to BS 7671.
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