Feature summary

Parameter	EM1220H	EM1250H	DM6220H
Accuracy Class for Wh	Class 1 Class 0.5	Class 1	Class 1
Accuracy Class for VARh	± 2%	± 2%	–
Accuracy Class for VAh	± 0.5%	± 1%	–
Sampling rate per cycle	32	32	32
Current: Per-phase and 3 phase average Calculated neutral current	ü	–	ü
Voltage: V L-N - per-phase and 3 phase average V L-L - per-phase and 3 phase average	ü	–	ü
Power Factor Per-phase and average	True PF	True PF	True PF
Frequency	ü	ü	ü
Power	ü	ü	–
Energy	ü	ü	–
3 Phase unbalance	Current Voltage	– –	Current Voltage
Meter On hours Load Run hours Power Interruptions	ü	ü	ü
Phase angle Per-phase (between Voltage and Current)	ü	–	ü
Communication	RS-485 Modbus RTU	RS-485 Modbus RTU	RS-485 Modbus RTU
Revolutions per minute (RPM)	ü	–	ü
Load percentage	ü	–	ü