Product Description Model NO.: DDSY168 Installation: Direct Connected Electric Equipment: Single-phase Power Meter Connection: Terminal Type: Energy Meter Customized: Customized Communication to Ciu: 2-Wires Transport Package: Standard Packing Origin: Shenzhen China Display: Digital Usage: Multi-Functional Energy Meter, Watt-Hour Meter, Meter for Industry and Home Use, Standard Electric Energy Meter, Prepayment Meter, Reactive Energy Meter, Multi-rate Watt-hour Meters, Maximum Demand Meter Theory: Static Meter Measured Signal: Pulse Peak Certification: RoHS, ISO, CE Size: 155mm*120mm*52mm Trademark: CALIN Specification: IEC 62053-21 The DDSY168 is used for a wide rang of applications, due to an improved dynamic range allowing a basic current of 5 Amp while retaining a maximum current of 80 Amp and extended functional features. It is a compact and keypad-based design in a BS8565 standard housing and maintains the rugged RF immunity withstand of 30V/m and IP54 rating, allowing it to be installed in harsh environments. 
 
Main Features
 20 digit (Standard Transfer Specification) STS encryption
 Detection of significant reverse energy (SRE) 
 IEC62056-21 compliant optical & RS485 port allowing for easy data interrogation
 Disconnects on overload and no credit
 Prepayment and credit mode hot swap
 Programmable load limit and low credit warning
 Detection and record tamper event such as opening cover, reverse connection, black-out
 Easy access to 12 months historical consumption data and last 5 token entered
AMR/AMI Smart Metering Function (on request)
v Easy connection to User Interface Unit (UIU) for split type applications
v PLC/ RF / GPRS communication with a head-end AMR/AMI server 
v Time of Use (TOU) , multi-tariff, holiday setting.
v Advanced load control and disconnection features
 

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
Starting current(Ist)	20mA
Active energy constant	1600imp/kWh
Measurement Accuracy
Active energy to IEC6205321	Class1.0
Power Consumption
Power consumption in Voltage circuit	<2W  <8VA
Power consumption in current circuit	<1VA
Temperature range
Operation meter	-25ºC to+70ºC
Storage	-40ºC to+85ºC
Insulation strength
AC Insulation strength	4kV at 50Hz during 1min
Impulse voltage 1.2/50 μs mains connections	8kV
Electro Magnetic Compatibility
Electrostatic discharges
Contact discharge	8kV
Air discharge	16kV
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

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