1
Chapter 1 Meter Overview
DZS300 is an advanced, smart DIN rail energy meter. It is widely used in energy distribution sites,
energy management systems and intelligent on-line monitoring systems of different industries. It can
measure electric parameters i.e. three-phase voltage, three-line voltage, three-phase current,
harmonics (2nd-31st), active power, reactive power, apparent power, power factor, frequency, active
energy, reactive energy, multi-tariff energy etc. with high accuracy.
Chapter 2 Specifications
2.1 Input Voltage
Reference Voltage: 3×220V/380V Voltage Range: 0.6Un~1.2Un
2.2 Input Current
Measuring Range: 1‰In~4In Current Range: 20(80)A
2.3 Energy
Accuracy Class: Class 0.5S Resolution: 0.01kWh
2.4 Frequency Measurement
Frequency Measuring Range: 45~65Hz
2.5 Measuring Accuracy
Voltage/Current: 0.2% Power Factor: 1%
Frequency: ±0.01Hz
2.6 Communication
RS485/Modbus-RTU Communication Protocol Baud Rate: 1200~9600bps (settable)
Remark:
DZ81-DZS300 adopts RS485 interfaces and Modbus RTU communication
protocol to communicate. The terminals are 485A and 485B. The RS485 transmission
medium is shielded twisted pair.
2.7 Power Supply
Power Supply: AC85~265V(45
～
55HZ)/ DC85
～
300V Power Consumption: <3VA
2.8 Pulse Output Interface
Terminals PE+ and PE- are pulse output interface. The import active energy output is
settable.
2.9 Pulses Per Second(PPS) Output Interface
Terminals SEC+ and SEC- are PPS output interface. When the real-time clock update per
