Standard and Compliance
? IEC 62052-11: Electricity metering equipment (a.c.) – General requirements, tests and test conditions – Part 11: Metering equipment
? IEC 62053-21: Electricity metering equipment (a.c.) – Particular requirements – Part 21: Static meter for active energy (classes 1 and 2)
? IEC 62055-41: Electricity metering – Payment systems – Part 41: Standard transfer specification (STS) - Application layer protocol for one-way token carrier systems
? DLMS/COSEM: Device Language Message Specification/Companion specification for Energy Metering
Product Features
? Non-volatile memory to store meter data without the use of a backup battery
? Support local/remote firmware upgrades.
? Split design, UIU with keypad installed in customer premise to monitor meter use
Main Functions
Measurements
? kWh (import, export and absolute)
? Maximum kW demand (import, export)
? Cumulative kW demand (import, export)
? Instantaneous value of voltage, current, phase angle, active power, power factor
? Current date and time
? Frequency
? Neutral line current measurement
Billing
? Automatic monthly billing reset on 00:00:00 of the 1st day in each month, configurable
? Remotely billing reset from AMI central system
? Up to 12 months of data in meter memory
Prepayment Functions
? Support online prepayment remotely from the AMI central system
? Low balance alert by audible alarm & LED alarm to remind user to top up
? Support emergency and friendly holiday mode
? STS/CTS mode switchable
? Prepaid/postpaid mode switchable
? A standard 12-key keypad on UIU with audio feedback upon key press
Load Profiles
? Record up to 100 days of 15-minute load profiles with 16 channels on a FIFO basis.
? Load profile interval configurable from 1-60 minutes
Tariff Functions
? Time of Use (TOU) measurement of import and export energies (kWh) and import and export demands (kW) (up to 4 tariffs, 12 seasons, 12 weeks, 16 switches, 100 special days)
? Internal battery to maintain clock and calendar
Power Quality
? Current reverse
? Over-voltage and under-voltage detection with a configurable time threshold
? Long and short outage detection with a configurable time threshold
? Over current detection with a configurable time threshold
? All power quality events will be recorded on meter memory
Anti-tamper
? Detection of terminal, external magnetic field, bypass etc.
? Show tamper alarm on the LED.
? All tamper events will be recorded on meter memory and sent to the AMI central system remotely
Disconnect/reconnect switch
? 2-pole internal latching relay supporting load limiting, load shedding, and prepayment function
? Remote disconnect/reconnect from AMI central system
? Scheduled disconnect/reconnect
Communication
? Full DLMS/COSEM and IEC 62056-21 compliance optical port
? MC171 for communication when there is no power
Internal PLC/RF module
Operating Voltage | 230V |
Current rating | 5(100)A |
Starting current | 0.4% of Ib |
Frequency | 50Hz±5% |
Accuracy Class | Active Energy: CL 1.0 1000 imp/kWh |
Real-time Clock Accuracy | 0.5s/Day |
EMC | Electrostatic discharges(Contact discharges) | 8kV |
Electrostatic discharges(Air discharges) | 15kV |
Fast transient burst test | 4kV |
Surge immunity test | 6kV |
Electromagnetic RF field (80MHz to 2000MHz) | 10V/m(with current), 30V/m(without current) |
Diameter of terminal holes | 10 mm |
Environment | Temperature Range: -40 °C ~ +70 °C Humidity: Up to 95% |
Protective class | II |
Degree of protection | IP54 |
Applicable scenarios：
? Industrial and commercial buildings.
? Small power distribution system.
