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63A 3 phase socket
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<blockquote data-quote="Sidney" data-source="post: 462108" data-attributes="member: 30039"><p>I would more than likely be going with 32 amp socket with a 32 amp OCPD. Although we should be using the declared nominal voltage of 400v this calculation throws us slightly over the 32 amp rating of the socket.</p><p></p><p>If we use a more realistic 415v then the load will be 31.99 amps. Caveat being that voltage is actually measured on site to confirm it is suitable. </p><p></p><p>I would then have to consult the manufacturers instructions but at a guess this would be a resistive load, possibly a bridge rectifier, so potentially a B curve MCB of Gg fuse. As this is a modern charger I would hazard a guess that it would more than likely be a soft start but only the manufacturer can confirm.</p><p></p><p>What cable installation method is to be used?</p><p></p><p>I would also need to know supply characteristics and expected Ze for the installation and also any applicable Zdb and voltage drop. Only then can I select my cable.</p><p></p><p>A lot of people tend to forget to account for volt drop when using distribution circuits, I've only recently started placing a calculated volt drop note on the DB circuit chart, I would use a label but this would only annoy Tony...</p></blockquote><p></p>
[QUOTE="Sidney, post: 462108, member: 30039"] I would more than likely be going with 32 amp socket with a 32 amp OCPD. Although we should be using the declared nominal voltage of 400v this calculation throws us slightly over the 32 amp rating of the socket. If we use a more realistic 415v then the load will be 31.99 amps. Caveat being that voltage is actually measured on site to confirm it is suitable. I would then have to consult the manufacturers instructions but at a guess this would be a resistive load, possibly a bridge rectifier, so potentially a B curve MCB of Gg fuse. As this is a modern charger I would hazard a guess that it would more than likely be a soft start but only the manufacturer can confirm. What cable installation method is to be used? I would also need to know supply characteristics and expected Ze for the installation and also any applicable Zdb and voltage drop. Only then can I select my cable. A lot of people tend to forget to account for volt drop when using distribution circuits, I've only recently started placing a calculated volt drop note on the DB circuit chart, I would use a label but this would only annoy Tony... [/QUOTE]
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63A 3 phase socket
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