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UMG 508Direct measurementNominal currents up to 5A can also be directlymeasured with the UMG508.Under consideration that the direct measurementwill be carried out for the current only inthree phase 4 wire systems with mains voltagetill• 127V/220V (300V CAT III) according UL• 277V/480V (300V CAT III)Ampere meterIf you do not want to measure the current withthe UMG508 alone, but also with an additionalampere meter, the ampere meter must be switchedin series to the UMG508.and three phase 3 wire systems with mainsvoltage till• 277V (300V CAT III) according UL• 480V (300V CAT III)Due to the fact that the UMG508 does nothave integrated protection for the currentmeasurement, this protection must be foreseenin the installation.Illu. Example, current measurement with an additionalampere meter.Illu. Example, direct current measurement.25