The Three Phase Smart SED302 Meter is an advanced metering solution for modern utility infrastructure, offering accurate energy measurement, comprehensive billing, and power quality monitoring. With flexible plug-and-play communication, multi-tariff support, and robust anti-tamper features, it enhances operational efficiency, reliability, and sustainability.
The SED302 SmartElectricity Meter is a three-phase meter designed for versatile communication and advanced energy monitoring. It supports up to three modules simultaneously, including two communication modules and one input module, enabling seamless integration with smart grid systems.
FRONT VIEW DESCRIPTION:
DISPLAY
The meter features an LCD display with 8 characters and up to 2 decimal points, providing real-time information on energy consumption, voltage, and current. The backlight is white for easy readability.
DATA QUERY BUTTON
Compliant display and demand button are available to allow users to interact with the meter, query data, and navigate menus. Additionally, sound feedback is provided when buttons are pressed.
OPTICAL COMMUNICATION INTERFACE
An optical communication interface is present for data exchange. This interface might be used for data reading , configuration and firmware upgrade.
METER INFORMATION
Essential information, such as the serial number and model details, is provided on the front and module covers, aiding identification and usage.
STS KEYPAD
The meter includes a keypad used for querying data information and recharge.
BASIC PARAMETER
Accuracy
Active
IEC Class 1
Reactive
IEC Class 2
Structure
Structure Type
BS
Wiring connection
L1L1L2L2L3L3NN(3P4W)
Voltage
Nominal voltage Un
3*230/400V-3P4W
Operating range
0.6Un--1.2Un
Current
Basic current I b
5A
Max current Imax
100A
Active I start
0.4%Ib(IEC Class1 Direct)
Reactive I start
0.5%Ib(IEC Class 2 Direct)
Frequency
Nominal frequency Fn
50Hz
Operating range
50Hz±5%
Meter constant
Active (imp/kWh)
1000
Reactive (imp/kVarh)
1000
OUTPUT UNITS
Display
Type
LCD
Value display character number
8
Max decimal
2
Backlight
White
LED
Active pulse
Red
Reactive pulse
Red
Alarm
Red
Credit(2 color)
Red & Green
Latch Relay
Pole number
3 Pole
Maximum Switching Current
120A
Beep
Comply
COMMUNICATION
Local communication
RS485
Comply
Optical port (with iron)
Comply
AMI communication
Wireless
Module type
CAT.1+2G
Antenna
Short
UIU communication
PLC
/
REFERENCE STANDARD
IEC
IEC 62053-21
IEC 62053-23
IEC 62052-11
Protocol
DLMS/COSEM
INPUT UNITS
Key &Detection
Display button
Comply
Billing button
Comply
STS keypad
Comply
Meter cover
Comply
Terminal cover
Comply
Module cover
Comply
Module cover 2
Comply
Magnetic
Comply
Others
display button and demand reset button require sound feedback
LOAD PROFILE
Monthly billing
Billing count
Last 12th
Billing time
The default billing time is 00:00:00 of the 1th day in each month.
Billing data
1. Date and Time
2. Active Energy import total +A (1.8.0)
3. Active Energy export total -A (2.8.0)
4. Reactive Energy import total +R (3.8.0)
5. Reactive Energy export total -R (4.8.0)
6. Active Energy in kWh for the current billing period
7. Reactive Energy in Varh for the current billing period
8. Remaining balance
9. Charging Amount of Current month
10. Current month consumption amount
11. Active maximum power
12. Reactive maximum power
Daily billing
Billing count
62
Billing time
The default billing time is 00:00 of each day.
Billing data
1. Date and Time
2. Active Energy import total +A (1.8.0)
3. Active Energy export total -A (2.8.0)
4. Reactive Energy import total +R (3.8.0)
5. Reactive Energy export total -R (4.8.0)
6. Available credit
7. Current month consumption Amount
Load profile
Capture period
15 min
Entries
100 days
Capture objects (Energy)
1. Date and Time
2. Time status
3. Active demand
4. Reactive demand
5. Import Active energy Wh
6. Import Reactive energy Varh
7. Active Energy import (1.8.0)
8. Reactive Energy import (3.8.0)
Capture objects (Quality)
1. Date and Time
2. Average active power
3. Average reactive power
4. Voltage A/B/C
5. Current A/B/C
6. Power factor A/B/C
7. Average Frequency
Limiter
Enable
Comply
monitor object
active power import/current active power import by default
Threshold value
22KW, configurable
Othres
details check sheet 'limiter'
Over voltage
Enable
Comply
Threshold value
Over voltage threshold: 250V, configurable restore threshold: 240V, configurable
Over current
Enable
/
Threshold value
/
No credit
Enable
Comply
Factory settings
Enable
/
Power off
Enable
/
Tamper
Enable
Comply
tamper item
1. Meter cover open, configurable
2. Terminal cover open, configurable
3. Magnetic field, configurable
When relay is open because of above 3 tamper,
relay can be closed via dlms command directly
00 01 01 00 5E 62 45 FF 02 00 12 00 00
and this status can be read by meter software
MAJOR APPLICATION
Nest_Remote_Comfort_Sensor
Remote Communication and Control:
Equipped withRS485 and wireless communication (CAT.1+2G) with a short antenna, it supports two-way communication, enhancing control and data collection capabilities.
Chat_Bubble
DLMS/COSEM Protocol Compliance:
The meter complies with DLMS/COSEM standards, ensuring compatibility and inter operability with other smart metering systems.
Receipt_Long
Load Profiles and Billing:
It records load profiles at 15-minute intervals for up to 100 days and supports monthly billing data storage for 12 months, providing detailed consumption records. Billing is reset automatically at the beginning of each month, with configurable settings.
Nest_Clock_Farsight_Analog
Real-Time Clock Unit:
The meter has a real-time clock unit with an accuracy of less than 0.5 seconds per day, maintaining precise time for billing and event logging.
Hardware and Structure
backup
Power and Backup:
A super capacitor supports the "last gasp" function for sending final data during power outages, and internal/external batteries provide reliable backup power.
layers
Cover and Terminal Materials:
The meter housing, including the cover, terminal cover, and terminal block, is made of polycarbonate (PC), with a white color for the main body and a transparent terminal cover. The terminal materials are copper, with nickel coating, and zinc-coated iron screws to ensure durability.
Water_Drop
Dust and Water Protection:
The meter is rated with IP54 protection, providing resistance against dust and water, ensuring durability in various environmental conditions.
shield
Sealing and Tamper Protection:
The meter is equipped with multiple seal positions (top cover, terminal cover, module covers, MD button) to prevent tampering. The sealing material is aluminum caps by default.
The Three Phase (SED302) Smart Electricity Meter offers advanced measurement, billing, and communication features for efficient energy usage, monitoring, and management, making it suitable for modern energy infrastructures.
STRUCTURE
Cover
Material
PC
Color
White
Base cover
Material
PC
Color
White
Terminal cover
Material
PC
Color
Transparent
Type
Extended
Terminal block
Block material
PC
Color
White
Wiring clamping type
Clamp cage
Terminal material
Copper
Terminal material coating
Nickel
Clamping screw material
Iron(Default)
Clamping screw coating
Zinc
Dust and water protection
IP54(Default)
missing dimension
266.5 x 168 x 84.5
Sealing
Type
Screw(Default)
Seals material
plastic
Seals fixed position1
Top cover
Seals fixed position2
Terminal cover
Seals fixed position3
Module cover （CAT.1+2G module cover）
Seals fixed position3
Module cover 2（keypad or nfc module cover）
Seals fixed position4
MD button
REGISTER
Energy
Active energy
Comply
Reactive energy
Comply
Apparent energy
/
Demand
Calc method
Slide
Period
15 min
Number Of Interval
3
Active energy
Comply
Reactive energy
Comply
Apparent energy
/
Instantaneous value
Voltage
Comply
Current
Comply
Active power
Comply
Reactive power
Comply
Apparent power
Comply
Frequency
Comply
Power factor
Comply
OTHERS HARDWARE
RTC
Accuracy
< 0.5s/d
Subsidiary power
Super capacitor
Comply (for last gasp)
Internal battery
Comply
External replaced battery
Comply
Measurement elements
Phase line
CT
Neutral line
Shunt, meter need to be able to detect neutral missing as right image
