Product Overview
The Telecom Off-Grid Solar Kit provides continuous DC/AC power for remote, off-grid telecommunication base stations, cellular towers, and microwave relay stations. The system integrates photovoltaic modules, a LiFePO4 energy storage battery bank, an MPPT solar charge inverter, and an intelligent Energy Management System (EMS). Designed for continuous 24/7 operation in harsh environmental conditions (-20C to 55C), the kit eliminates reliance on diesel generators, reducing operational expenditure and carbon emissions for telecom operators.
Key Specifications
|
Parameter |
Specification Details |
|
System Voltage |
48VDC / 51.2VDC nominal (Configurable for 110V/220VAC output) |
|
PV Generating Capacity |
2kWp to 10kWp (Monocrystalline PERC modules, efficiency >= 21.3%) |
|
Energy Storage Capacity |
5kWh to 30kWh modular LiFePO4 (Lithium Iron Phosphate) battery pack |
|
Inverter / Charger Type |
High-efficiency MPPT Solar Inverter (Tracking efficiency >= 99.5%) |
|
Operating Temperature |
-20C to +55C (Optional thermal management for sub-zero climates) |
|
Enclosure Protection |
IP55 / NEMA 3R outdoor-rated steel cabinet (anti-corrosion powder coating) |
|
Communication Protocols |
RS485, CAN 2.0, SNMP, 4G remote monitoring module |
|
Design Life |
>= 10 years (Battery cycle life: >= 6,000 cycles at 80% DOD, 25C) |
|
Certifications |
ISO9001, ISO14001, CE, RoHS, UN38.3, IEC62133 compliant |
Key Product Characteristics
Solid-State Chemistry and Thermal Safety: Utilizes prismatic LiFePO4 cells paired with a multi-tier Battery Management System (BMS) monitoring cell voltage, temperature, and current balance to prevent thermal runaway.
Industrial-Grade Enclosure: Housed in an outdoor cabinet featuring laser-welded structural steel, gasket-sealed doors, and natural convection or optional active air-conditioning, manufactured across a 20,000+ square meter production floor.
High-Efficiency Power Conversion: Integrated MPPT controllers maximize solar harvesting during low-irradiance overcast conditions common in remote deployment zones.
Remote Telemetry: Built-in SNMP and 4G communication interfaces allow network operations centers (NOC) to monitor state-of-charge (SOC), voltage output, and solar yield in real-time.
Core System Components
Each standard off-grid telecom kit arrives factory-integrated and pre-wired, comprising:
Solar Array Subsystem: Monocrystalline PV panels equipped with anodized aluminum mounting rails for ground or pole mounting.
Energy Storage Subsystem: Rack-mounted 51.2V LiFePO4 battery modules with automated balancing circuits and breaker disconnects.
Power Conversion and Control Hub: Combination unit housing the MPPT charge controller, DC/DC or DC/AC inverter, and main distribution panel.
Enclosure and Cabling: Outdoor-rated cabinet complete with surge protection devices (SPD Type II), industrial terminal blocks, and UV-resistant DC cabling.
Applications
Off-Grid Cellular Base Stations (BTS): Powers 2G/3G/4G/5G remote macro and micro-sites lacking grid access.
Rural Microwave and Repeater Links: Supplies stable, uninterrupted electricity for continuous signal transmission over mountainous or desert terrain.
Emergency and Disaster Recovery Comms: Rapid-deployment temporary communication nodes for remote rescue and defense operations.
Compatibility and Integration
Load Compatibility: Directly powers standard telecom DC loads (-48VDC) as well as AC auxiliary loads (transmitters, routers, obstruction lighting) via pure sine wave output.
Generator Hybridization: Features dry-contact signal outputs and automatic transfer logic to integrate auxiliary diesel generators (DG) during prolonged low-sun winter periods.
EMS Integration: Supports standard industrial protocols (Modbus, SNMP) for seamless integration into existing telecom network management software (NMS).
Supply and Customization Options
Manufacturing Capacity: Supported by a 1 GWh annual battery pack production capacity utilizing automated SMT and PACK assembly lines.
OEM/ODM Adaptations: Tailored voltage configurations, custom enclosure dimensions, specialized anti-salt-mist coatings for coastal installations, and private-label firmware/branding.
Lead Time and Logistics: Standard configurations ship within 15 to 25 business days. Export packaging complies with UN38.3 standards for secure international ocean and air freight.
Quality and Testing
Production adheres strictly to ISO9001 and ISO14001 management frameworks. Every unit undergoes a rigorous multi-stage quality control protocol:
Cell Grading and Sorting: Automated testing instruments sort cells by internal resistance and capacity matching.
Welding and Assembly: Laser welding equipment ensures low-resistance electrical connections across module busbars.
BMS Debugging and Aging Tests: Automated test benches verify protection thresholds, balancing currents, and communication interfaces.
Environmental Stress Screening: Extended battery cycle testing systems and Electroluminescence (EL) inspection machines screen for micro-cracks and thermal stability under load.
FAQ
Q: What is the expected autonomy of the battery bank during extended overcast periods?
A: Standard configurations provide 2 to 5 days of autonomy depending on the continuous load profile (W) and geographic solar irradiance data. Custom battery banks can be scaled to higher Ah ratings upon request.
Q: Can this kit integrate with an existing backup diesel generator?
A: Yes. The onboard control unit includes programmable dry-contact triggers that automatically start a backup generator when battery state-of-charge drops below a user-defined threshold (e.g., 20%).
Q: What maintenance is required for remote deployment?
A: The system requires minimal intervention. Routine maintenance is limited to periodic PV module surface cleaning and remote firmware updates or status checks via the 4G/SNMP telemetry link.
Q: What documentation is provided for import clearance and engineering sign-off?
A: Each shipment includes complete factory test reports, CE and RoHS certificates, UN38.3 battery transport reports, MSDS documentation, and detailed electrical schematic wiring diagrams.
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