Engineered for high resilience and wide AC voltage input thresholds (80V-300V AC) to survive grid fluctuations in Sri Lanka's outer provinces.
Sri Lanka’s telecommunications network is expanding rapidly. Leading domestic carrier networks like Dialog Axiata, SLT-Mobitel, and Hutchison Telecommunications are deploying widespread fiber-to-the-home (FTTH) architectures and high-density 5G base stations. However, the island's unique grid footprint poses significant operational hurdles. Operators must deal with power outages, phase imbalance, and voltage drops, especially in rural and coastal areas like Trincomalee, Galle, and Jaffna.
To keep services up and running constantly, base station sites need reliable energy systems. This is why the -48V DC Telecom Power System has become the standard. Grounding the positive terminal prevents electrolytic galvanic corrosion in high-humidity climates. EVS Powers provides robust power systems equipped with advanced hot-swappable rectifiers, integrated Low Voltage Disconnect (LVD) parameters, and SNMP management capabilities, designed to withstand Sri Lanka’s harsh operating conditions.
Purchasers and network planning engineers look for three main features in power conversion hardware:
Modern telecommunication nodes require efficient, modular designs. EVS Powers' product line uses advanced High-Frequency Switching Mode (SMPS) design topologies to provide clean, ripple-free -48V DC power directly to baseband units (BBUs), remote radio heads (RRHs), and microwave transceivers.
| System Capacity Range | Standard Configuration | Typical Infrastructure Deployment Scenario | Sri Lanka Target Infrastructure Compatibility |
|---|---|---|---|
| 1U Height Series (1kW - 3.6kW) | EVS4860-H1A2, EVS4860-H1A1, EVS48100-H1B1 | LTE Small Cells, Micro Base Stations, FTTH Optical Line Terminals (OLT) | Urban Colombo microcells, localized residential fiber network nodes. |
| 5U Embedded Cabinets (9kW - 12kW) | EVS48200-H5B3, EVS48200-H5B4 | Macro Base Stations, Core Data Switching Nodes, Microwave Transmission hubs | Central highway transmission hubs, rural Southern Province coverage towers. |
| Modular Rectifier Units | 30A, 50A, 60A hot-swappable sub-modules | N+1 scalable systems with integrated smart controller cards | Base stations requiring flexible upgrades without site shutdowns. |
In regions like the North Central Province of Sri Lanka, integrating green energy is a key step toward sustainable power grids. EVS modular DC power supplies can work in hybrid solar-grid systems. The system controller prioritizes green energy inputs and keeps the grid or diesel generators as backup options. Equipped with programmable dual low-voltage disconnects (BLVD & LLVD), our systems automatically shut down non-essential loads first to save remaining battery power for critical transmission channels.
At Guangzhou EVS Powers Co., Ltd., we combine advanced engineering with high-precision manufacturing. Every step of the production process, from automated winding to final burn-in testing, is carefully monitored to deliver highly reliable telecom power systems.
Wire Cutting Machine
Wire Cutting
Winding Machine
Plug-In
Automatic Soldering
Soldering Tin
In-Process Test
Glue Filling
Laser Engraving
Canning Machine
Assembly Line
Burn-In Test
Custom double-wall cardboard crating built for marine shipping routes to Colombo port.
We perform exhaustive testing on all telecom power equipment before dispatch. Our products undergo insulation testing, high-temperature simulation, and harmonic feedback monitoring in our testing labs.
Our quality assurance framework guarantees compliance with CE and RoHS directives. By simulating extreme operational conditions, we ensure our power systems run reliably in high-humidity coastal sites in Sri Lanka.
Download Certification Reports
DC Power Supply Tester
AC Withstand Voltage Tester
Temperature & Humidity Chamber
Optical Microscope
High-Load Aging Test
CAD Engineering & Design
Each module receives a certified test report before shipment.
Comprehensive portfolio of -48V configurations designed for indoor racks, outdoor cabinets, and decentralized nodes.
EVS Powers is committed to supporting our Sri Lankan partners. We offer comprehensive engineering support and optimized logistics paths to ensure smooth project execution across the country:
Grounding the positive terminal to create a -48V DC circuit prevents galvanic corrosion of metal parts, conduits, and connectors. In warm, high-humidity environments like Sri Lanka, positive grounding helps protect critical infrastructure from corrosion.
Our rectifiers feature a wide input voltage range (80V to 300V AC). If grid voltage drops, the rectifiers automatically adjust to avoid using battery power, switching to full battery support only during complete grid outages.
Yes. EVS power controllers support charging profiles for both traditional Valve Regulated Lead-Acid (VRLA) batteries and advanced Lithium Iron Phosphate (LiFePO4) battery systems. Charging parameters can be adjusted via the controller interface.
Yes. Our systems feature built-in SNMPv2/v3 and Modbus TCP/RTU communication modules. Operators can monitor voltage levels, system load, temperatures, and alarm states remotely via standard web browsers or integrated Network Management Systems (NMS).
Contact our sales engineers today to receive technical drawings, customized wiring schemes, and competitive pricing for your telecom site requirements.
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EVS Powers
