20(80)A Prepaid Lora Smart Meter with Lora Communication For Single Phase Meter
Single Phase Prepaid smart Energy Meter with Lora Communication
The DDZY150 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.
| Nominal voltage Un | 230V |
| Limited voltage | 70%~120%Un |
| Nominal frequency fn | 50-60Hz |
| tolerance | 5% |
| Basic current(Ib) | 5A |
| Maximum current(Imax) | 80A |
| Starting current(Ist) | 20mA |
| Active energy constant | 1600imp/kWh |
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)
- Easy connection to User Interface Unit (UIU) for split type applications
- PLC/ RF / GPRS communication with a head-end AMR/AMI server
- Time of Use (TOU) , multi-tariff, holiday setting.
- Advanced load control and disconnection features
Technical Specs of RF Receiver:
| Working voltage | +4.75~5.25V |
| Working frequency | 475~495MHz |
| Frequency stability | ±2.5PPM |
| Working bandwidth | 125KHz |
| Tranmitting power | 17dBm/27dBm |
| Transmitting current | <350mA |
| Receiving sensitivity | -136dBm |
| Receiving current | <60mA |
| Working temperature | -40°C~80°C |
Technical Specs of GPRS module:
| Working frequency | EGSM900/DCS1800MHz |
| Max tranmitting power | EGSM900 Class 4 (2 W) |
| GSM1800 Class 1 (1 W) |
| Receiving sensitivity | <-106dBm |
| Working voltage | 4.0V |
| Working temperature | -40°C~80°C |
