Power Line Carrier Sts Prepaid  Meters Multi - Rate , Tariff Control Killowatt Meter

The DDSY168 is used for a wide rang of STS prepaid 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.

The DDSY168 combines IEC compliant accuracy metrology and DLMS/COSEM standard compatible communication technology. The meter adopts power line carrier of BPSK FSK  narrow band PLC communication for data exchange and automated meter reading. It offers utility users and service providers a sound data collection and revenue protection tool and a real-time monitoring system. 

.This type of meter is Integrated Single -Phase Prepaid Electricity Meter provides an integrated solution for kWh measurement and prepayment. Credit and management data is transferred from a point of sales (POS) to the meter via a 20-digit numeric token that is generated using the Standard Transfer Specification (STS) encryption protocol. The token is entered into the meter via a keypad.  

Features

a) Detection of significant reverse energy (SRE)

b) IEC62056-21 compliant optical & RS485 port allowing for easy data interrogation

c) Disconnects on overload and no credit

d) Prepayment and credit mode hot swap

e) Programmable load limit and low credit warning

f) Detection and record tamper event such as opening cover, reverse connection, black-out

 Client benefits

1) PLC/ RF / GPRS communication with a head-end AMR/AMI server (On request)

2) Time of Use (TOU) , multi-tariff, holiday setting

3) IP54 rating

4) Easy connection to User Interface Unit (UIU) for split type applications

5) 15 year designed life

Specifications:

Nominal voltage Un	220/230/240 V
Limited voltage	70%~120%Un
Nominal frequency fn	50-60Hz+5%
Basic current(Ib)	5-10A
Maximum current(Imax)	60-100A
Starting current(Ist)	20mA
Active energy constant	1000imp/kWh
Accuracy as Active energy to IEC6205321	Class1.0
Power consumption in Voltage circuit	<2W  <8VA
Power consumption in current circuit	<1VA
Operating temperature	25 to+70
Storage temperature	40 to+85
Insulation level	4kV rms for 1min
Impulse voltage withstand	8kV, 1.2/50 μs
Air discharge	16kV
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