Main Features SRE detection 20 digit STS encryption Tamper detection and record IEC62056-21 compliant optical port Double CT for Phase and Neutral line Disconnects on overload and no credit Support prepayment, credit mode and hot swap Programmable load limit and low credit warning   Split Configuration for Increased Revenue Protection The CIU (Customer Interface Unit) is optional. The MCU (Metering & Control Unit) and CIU is linked via Mbus 2 wires communication, galvanically-isolated PLC or RF wireless communication, the communication method is on request. The CIU is installed within consumer’s home, while MCU is installed in a meter cabinet away from consumers.  

Electrical parameters:
Voltage
Nominal voltage Un	230V
Limited voltage	70%~120%Un
Frequency
Nominal frequency fn	50-60Hz
tolerance	+5%
Current
Basic current(Ib)	5A
Maximum current(Imax)	80A (100A optional)
Starting current(Ist)	20mA
Active energy constant	1000imp/kWh
Measurement Accuracy
Active energy to IEC62053-21	Class1.0
Burden
Voltage circuit	<2W  <8VA
Current circuit	<1VA
Temperature range
Operation meter	-25℃ to+70℃
Storage	-40℃ to+85℃
Insulation
Insulation level		4kV rms 1min
Voltage impulse withstand		8kV 1.2/50 μs
Insulation System Classification		Protective Class II
Electro Magnetic Compatibility
Electrostatic discharges
Contact discharge		8kV
Air discharge		15kV
Electromagnetic RF fields
27MHz to 500MHz typical		10V/m
100kHz to 1GHz typical		30V/m
Fast transient burst test		4kV
Mechanical requirements
Meter shell Protection Rate		IP54
Insulation System Classification		Protective Class II
Maximum cable size		8 mm