Three Phase Cellular Smart Meter - i310-G

i310-G Three Phase Cellular Smart Meter with 4G/NB-IoT direct connectivity, DLMS/COSEM protocol, and Class 1.0 accuracy for industrial AMI applications.

PRODUCT OVERVIEW

Next-Gen Industrial Metering

The i310-G three-phase smart meter by Inhemeter combines industrial-grade precision with advanced cellular connectivity (GPRS/3G/4G/NB-IoT) for direct cloud integration. This meter is engineered for commercial buildings, industrial facilities, and high-value installations requiring real-time monitoring and control without traditional gateway infrastructure.

With its directly-connected three-phase design and built-in cellular modem, the i310-G provides utilities with instant deployment capabilities, bi-directional metering for distributed generation, comprehensive power quality monitoring, and remote load control. It supports both prepayment (STS standard) and post-payment applications with military-grade security and advanced event detection.

Industrial Cellular Connectivity

Robust 4G/NB-IoT with redundancy for mission-critical applications.

Bi-directional Energy Flow

Import/export metering for solar, wind, and storage systems.

Power Quality Monitoring

Real-time voltage, current, power factor, and harmonic analysis.

Request Quote
i310-G Smart Meter
i310-G
4G/NB-IoT
Industrial Grade
IP54
Protection
KEY CAPABILITIES

Advanced Features

Enterprise-grade functionality for commercial and industrial operations with comprehensive monitoring and control.

01

Multi-Band Cellular Support

Industrial 2G/3G/4G/NB-IoT with automatic failover for maximum uptime.

02

Bi-directional Metering

Four-quadrant measurement for solar PV, EV charging, and storage integration.

03

Power Quality Analysis

Monitor THD, voltage sags/swells, frequency deviation, and power factor.

04

Advanced TOU & Billing

Up to 8 time zones with seasonal calendars and maximum tracking.

05

Comprehensive Tamper Detection

Magnetic field, cover opening, reverse flow, phase loss, and neutral bypass detection.

06

Remote Load Control

High-capacity relay for demand response and remote service operations.

07

Real-Time Event Pushing

Immediate cloud notifications for critical events, alarms, and power quality issues.

08

Enterprise Security

DLMS/COSEM encryption with VPN, TLS 1.3, and role-based access control.

09

STS Prepayment

IEC 62055 compliant with remote credit transfer and multi-currency support.

10

Modular Architecture

Hot-swappable communication modules for future-proof deployments.

11

IP54 Protection

Industrial-grade enclosure for harsh environments with optional IP65 rating.

TECHNICAL DATA

Technical Specifications

Comprehensive technical data for engineering, procurement, and deployment planning.

Class 1.0
Active Energy Accuracy
100A/120A
Maximum Current
3×400V
Rated Voltage

Measurement Parameters

Voltage Range
3×230/400V ±30%
Frequency
50Hz / 60Hz ±5%
Basic Current (Ib)
5A / 10A
Max Current (Imax)
100A / 120A
Starting Current
0.4% Ib Ultra-sensitive
Power Consumption
< 0.5W / 2VA (Voltage / Current circuit)

Accuracy & Metering

Active Energy Accuracy
Class 1.0 (IEC 62053-21)
Reactive Energy Accuracy
Class 2.0 (IEC 62053-23)
Measurement Type
Four-Quadrant Bi-directional
Energy Direction
Import / Export (Active & Reactive)
Display Resolution
0.01 kWh / 0.01 kvarh
4G/NB-IoT
Cellular Technology
TLS 1.3
Security Protocol
DLMS/COSEM
Protocol Standard

Cellular Module

Technology
GPRS 3G 4G LTE NB-IoT
Frequency Bands
Multi-band (Global coverage)
SIM Support
Standard SIM / Micro SIM / eSIM
Redundancy
Dual SIM Optional
Antenna
Internal / External (optional)

Protocols & Interfaces

Network Protocol
TCP/IP, UDP, MQTT, CoAP, HTTP/HTTPS
Application Protocol
DLMS/COSEM (IEC 62056)
Local Optical Port
IEC 62056-21 (1200 baud - 9600 baud)
RS485 Interface
Modbus RTU / DLMS (9600-115200 baud)
Data Transmission
On-demand / Scheduled / Event-triggered
Data Push Interval
Configurable (5 min - 24 hours)

Security Features

Encryption
AES-128 / AES-256 (DLMS/COSEM)
Transport Security
TLS 1.2 / TLS 1.3
Authentication
HLS (High-Level Security), Certificate-based
VPN Support
IPSec, L2TP, OpenVPN
Access Control
Role-based (Multi-level permissions)
Firmware Update
OTA (Over-the-Air) with signature verification
-25°C to +70°C
Operating Range
IP54/IP65
Protection Rating
20+ Years
Design Life

Temperature & Climate

Operating Temperature
-25°C to +70°C Extended range
Storage Temperature
-40°C to +85°C
Humidity
5% to 95% RH (non-condensing)
Altitude
Up to 2000m (standard) / 4000m (optional)
Thermal Stability
< 0.05% per °C

Mechanical & Protection

Protection Degree
IP54 Standard / IP65 Optional
Enclosure Material
Polycarbonate (UL94 V-0 flame retardant)
Terminal Material
Brass (nickel-plated) / Copper
Dimensions (H×W×D)
265mm × 185mm × 75mm
Weight
≈ 1.5 kg (with comm module)
Mounting
DIN rail / Wall mount / Panel mount
Display
LCD with backlight (optional OLED)

Reliability & Lifespan

Design Life
20+ years
MTBF (Mean Time Between Failures)
> 100,000 hours
Data Retention
10+ years (EEPROM)
Battery Backup
10 years (RTC & critical data)
Relay Life
100,000 switching cycles

Globally Certified & Standards Compliant

Meets international standards for metering, communication, and safety across major markets.

Metering Standards

General Requirements
IEC 62052-11 AC metering equipment
Active Energy
IEC 62053-21 Class 1 and 2 meters
Reactive Energy
IEC 62053-23 Class 2 and 3 meters
Type Test
EN 50470-1/2/3 (European standard)
MID Compliance
2014/32/EU (European Directive)

Communication Standards

DLMS/COSEM
IEC 62056-4-7, IEC 62056-6-2
Data Exchange
IEC 62056-21 Direct local exchange
Optical Interface
IEC 62056-21 Flag protocol
Device Profile
DLMS/COSEM Blue Book (12th edition)

Prepayment Standards

STS Standard
IEC 62055-41 Token carrier transfer
Application Layer
IEC 62055-51 STS application layer
Vending Protocol
IEC 62055-31 Particular requirements

EMC & Safety Standards

EMC General
IEC 61000-4 series
ESD Immunity
IEC 61000-4-2 Level 4 (±8kV contact)
RF Immunity
IEC 61000-4-3 Level 3 (10V/m)
Burst Immunity
IEC 61000-4-4 Level 4 (±4kV)
Surge Immunity
IEC 61000-4-5 Level 4 (±6kV)
Magnetic Field
IEC 61000-4-8 Level 5 (1000 A/m)

Certifications

Type Approved
European
USA
Compliant
EU Directive
9001:2015

Manufacturer Information

Inhemeter (INHE Group) - Leading provider of smart metering solutions with ISO 9001:2015 certified manufacturing facilities.

All products undergo rigorous testing and quality assurance processes, with full traceability and compliance documentation available.

IDEAL APPLICATIONS

Where to Deploy

Commercial Buildings

Office towers, shopping malls, and business complexes requiring detailed energy management.

Industrial Facilities

Manufacturing plants, data centers, and heavy industry with critical power monitoring needs.

Renewable Energy

Solar farms, wind installations, and battery storage with bi-directional metering requirements.

EV Charging Stations

Public and private charging infrastructure with real-time billing and load management.