Voltage measuring instrument EMM-µ4h

currentfrequencyreactive power

The EMM... digital multimeters are made in 72x72mm and 96x96mm flush-mounted housing with reduced depth. The TRMS measurements allow correct operation even in critical conditions. The main measurement parameters are: • Voltage (line and total) • Current (phase and total) • Power (active, reactive, apparent phase and total) • Cosφ (phase and total) • Frequency • Maximum instantaneous values of voltage and current, active power, reactive power and apparent power • Peak values (max demand) • Average value (AVG) for powers and currents • Hour counter • Active, reactive and apparent energy meters (partial and total with programmable tariff functions) • Bidirectional active and reactive energy meters OPERATIONAL CHARACTERISTICS • Self-powered by phases • voltage measurement range: 20...500VAC L-L 20...290VAC L-N • Current measurement range: 0,02...5A • Operating frequency range: 45...65Hz • Accuracy: Voltage: ±0,5% ±1 digit Current: ±1 digit Frequency: ±1 digit Active energy: Class 2 • Total hour meter • Max and AVG measurement storage • True RMS measurements • RS485 port • Modbus-RTU communication protocol • 2 pulses outputs • Housing: flush-mount 96x96mm with reduced depth (EMM-R4h only) • Housing: flush-mount 72x72mm (EMM-p4h only) • Degree of protection: IP65 on front; IP20 at terminal