ZERA offers a series of reference meters which can meet a variety of requirements. Primarily they are used for testing of meter installations and for observing error limits of electricity meters on site.
Accuracy class 0.02: MT3000
Portable Test Systems
ZERA’s portable test systems comprise of a reference meter with an integrated source. These are particularly useful for testing meter installations with defined currents or currents and voltages in one single device.
MT681 Accuracy class 0.1, 100 A current source
MT686 Accuracy class 0.05, 100 A current source
MT680s Accuracy class 0.1, 120 A current source
MT781 Accuracy class 0.1, 120 A / 500 V current and voltage source
MT786 Accuracy class 0.05, 120 A / 500 V current and voltage source
While testing meter installations on site, often a sufficient load is missing to achieve reliable results. Sources are available to generate currents up to 120 A and voltages up to 500 V.
MT400 Current source up to 12 A
MT500 Current source up to 12 A and voltage source up to 300 V
MT551 Current source up to 120 A and voltage source up to 500 V