Wired communication RS485 AMI solutions for multi - dwelling storey buildings
RS485 is a baud commnication port within Calin's meter. It provides the most comprehensive raw data of the meter including metrological value, firmware version, tariff plans, interval settings, alarm threshold, etc. Multi-storey buildings, multi-dweller complexing, student dormitry, body corporates, section-tile community of densely populated areas are perfect situation for this setup. Meters are normally locked away from cutomers premises in a cabinet or kiosk, allowing wired connection in most limited space. For communication with the back end server, a data collector or mini-concentrators can be utilized to link with the meter cabinet as a group control unit, and through GPRS or cable connected to the head-end server.
The communcation between the meter and the server is two-way, meaning meter transmit data and receive command from the head-end as well. A utility can implement load management control with the data readout and analytic tools of the system.
Key Benefit
1) Two way communication IEC standards compliant
2) Stable connection from the bottom layer to the head-end servers (HES)
3) Automated meter readout and remote load management as in intrusive controls
4) Interface with billing system and any other third party system softwares
5) Easy and quick to setup
6) Reduced operational cost and labor cost for meter reading service
AMI electricity meter Specification Datasheet
| Parameter | 1 Phase | 3 Phase |
| Nominal voltage | 110/120/220/230/240V Un (40%- 130%) | 3x110/120/220/230/240V Un(30%- 135%) |
| Norminal current | 5(60)A | 10(100)A |
| Connection type | Whole current / CTVT connection | Whole current / CTVT connection |
| Maximum current | 80A | 100A |
| Frequency | 50Hz | 50Hz |
| Accuracy class | IEC Class.1 | IEC Class.1 |
| Voltage circuit burden | ≤1.5W & 1.2VA | ≤1.5W & 5VA |
| Current circuit burden | ≤0.2VA | ≤0.5VA |
| Protective class | IP 54 as IEC 60529 | IP54 as IEC 60529 |
| Insulation class | 6kV Class II | 6.5kV Class II |
| Surge immunity | 4 kV | 4.3kV |
| Electrostatic discharge | 15kV | 16kV air discharge |
| Immunity to HF fields | 80MHz to 2GHz@30V/m | 80MHz to 2GHz@30V/m |
| Fast transient burst | 4.3kV | 4.3kV |
| Radio interference | As CISPR22 | As CISPR22 |
| Battery life without power | 10 years | 10 years |
| Dimension | 160mmx112mmx71mm | 290mmx170mmx85mm |
| Weight | Approximate 0.7kg | Approximate 3kg |
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