Single Phase Smart Prepaid Meter
The single phase smart prepaid meter is used for a wide rage of applications, deu 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 digits (Standard Transfer Specification) STS encryption
● Detection of significant reverse energy (SRE)
● IEC62056-21 compliant port allowing for easy data interrogation
● Disconnects on overload and no credit
● Dual power source working on both prepaid and credit mode
● Programmable load limit and low credit warning
● Detection and record tamper event such as cover open, reversal, black-out, etc.
● Easy access to 12 months historical consumption data and last 5 token entered
User Benefit
● Easy connection to User Interface Unit (UIU) for split type applications
● PLC/RF/GPRS wireless communication with a head-end AMR/AMI server
● Time of Use (TOU), multi-tariff, holiday setting
● 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 (lb) | 5A |
| Maximum current (Imax) | 80A |
| Starting current (Ist) | 20mA |
| Active energy constant | 1600imp/kWh |
Measurement Accuracy
| Active energy to IEC62053-21 | Class 1.0 |
Burden
| Voltage circuit | ＜2W ＜8VA |
| Current circuit | ＜1VA |
Temperature rage
| 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 calssification | Protective Class II |
Electro Magnetci Compatibility
Electrostatci discharges
| Contact discharge | 8kV |
| Air discharge | 16kV |
Electromagnetic RF fields
| 27MHz to 500MHz typical | 10V/m |
| 100kHz to 1GHz typical 30V/m | 30V/m |
| Fast transient burst test | 4kV |
Mechanical Requirements
| Meter sheel protection rate | IP54 |
| Insulation system classification | Protective Class II |
| Maximum cable size | 8mm |
