Mains pro 1.6.1 Global Guide
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3.4.1 “Star” connection
If used for rated voltage 230 VAC ph-ground, set the setpoint Uin (page 52) to 230 V, for systems with rated
voltage 120VAC ph-ground, set the setpoint Uin (page 52) is to 120V. No additional setting is necessary for
indication of “Star” connection - MainsPro provides automatic detection of phase-ground voltage measurement.
MainsPro provides over-range to 130% of the rated voltage, i.e. 300 VAC for 230 V system and 156 V for 120 V
system with no change of measurement accuracy.
3.4.2 “Delta” connection
In this arrangement, MainsPro is rated for 400 VAC ph-ph with over-range to 130% = 520 VAC with no change of
measurement accuracy. Setpoint Uin (page 52) is to be set to 400 V, no additional setting is necessary for
indication of “Delta” connection. MainsPro provides automatic detection of phase-phase voltage measurement.
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