1.General Description
Static three-circuit single-phase two-wire energy meters are designed for measuring AC active energy and variable parameters. They adopt advanced large-scale integrated circuit (IC) and SMT manufacturing technology, featuring bi-directional energy measurement, wide voltage range, anti-tamper performance, high accuracy and reliability, large overload capacity, low self-consumption, compact size, and light weight. The meter is equipped with an RS485 communication port, enabling remote reading.
The meter should be installed in a suitable environment with an ambient temperature range of -25°C to +55°C, a relative humidity of less than 75%, and temperature limits between -40°C and +70°C.
The meter is manufactured in compliance with the international standards IEC 62052-11:Electricity metering equipment (AC) General requirements, tests and test conditions, and IEC 62053-21:Static meters for active energy (classes 1 and 2).
2.Basic Function
Meter type: Three circuit single phase
Rate frequency: 50 or 60 Hz
Rated current: 10(80)A with internal relay control, 10(100)A without relay control
Rate voltage: 85-300V (each phase L-N)
Normal voltage range: 80%Un~110%Un
Limits voltage range: 70%Un~120%Un
Accuracy: Class 1
Pulse constant: See meter
RS485 port: MODBUS-RTU protocol, 1200~9600bps, None parity, default 9600bps
Note:The meter's internal working voltage is supplied from the L1 phase. If L1 loses phase, the other two phases will also not work.