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UMG 508Apply measurement voltage• Voltage measurements in networks withnominal voltages above 500VAC againstground must be connected using a voltageconverter.• After connection of the measurement voltages,the measurement values displayed bythe UMG508 for voltages L-N and L-L mustmatch those at the voltage measurement input.• If a voltage converter factor is programmed,this must considered upon <strong>com</strong>parison.Rotary field directionCheck the direction of the voltage rotary field onthe measurement value display of the UMG508.A "right" rotary field is usually available.mWarning!The UMG508 is not suitable for measuringDC voltages.Presentation of the phase sequence accordingto the rotary field direction.UL1-UL2-UL3 = right rotary fieldUL1-UL3-UL2 = left rotary field71

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