My company manufactures systems which incorporate power supplies from various manufactures. Typically these supplies have ratings such as 100V-140V/200V-240V and are designed to operate on a single phase input. Some of my customers have the US 208V 3 phase power distribution which gives you 208V phase to phase or 120V phase to neutral.
My question is directed towards the power supply people on this list. Can ANY supply intended for 200-240V single phase be used at 208V phase to phase (double phase). Would components (EMI suppression for example) be placed between neutral and ground that would preclude the supply from being used phase to phase? Would the use of these supplies in a phase to phase mode negate the EMI/EMC performance? Thanks --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).

