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This is Carlo Gavazzi Power Analyzer, the sticker says

Input 3x380(660)V

Does it means that the maximum input voltage per line must be 380V or 660V?

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  • \$\begingroup\$ Strange way to write a range. \$\endgroup\$ – winny Jul 20 '18 at 11:11
  • \$\begingroup\$ Ask them, they also have 5(6)A what in the world is that supposed to mean? It means they know how to write unintelligible ratings. \$\endgroup\$ – Voltage Spike Jul 20 '18 at 17:58
  • \$\begingroup\$ Do you have a manual for this thing? \$\endgroup\$ – Dmitry Grigoryev Jul 30 '18 at 8:51
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The "range code" of your product is "AV5", it means that your product can handle from 380V to 660V on its 3 inputs (-> tri-phase). The "D" letter also means that you must supply this power analyzer with 230VAC.

UPDATE : When I say :

from 380V to 660V

I mean 380V to 660V AC Three-phased.

Source : Datasheet

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