Explore our high-frequency, transformerless, modular, and lithium-ion online UPS units custom-manufactured to global engineering standards.
In an era driven by hyper-scale data centers, automated manufacturing facilities, complex medical diagnostics, and critical telecom nodes, uninterrupted clean electrical power has transitioned from a operational convenience to an imperative requirement. Power quality anomalies—ranging from total blackouts and micro-voltage sags to harmonic distortions, frequency fluctuations, and voltage spikes—cost global industries billions of dollars annually in system downtime, hardware destruction, and data corruption.
At the center of critical power infrastructure stands the Online Double-Conversion Pure Sine Wave Uninterruptible Power Supply (UPS). Unlike offline (standby) or line-interactive topologies, an online UPS continuously rectifies incoming raw alternating current (AC) into direct current (DC), filtering and boosting it, before using an advanced insulated-gate bipolar transistor (IGBT) inverter to regenerate a pristine, regulation-tight AC pure sine wave output. This technical mechanism guarantees an absolute Zero Transfer Time (0ms) during utility mains failure, creating a complete buffer between raw grid fluctuations and sensitive downstream electronic workloads.
Through continuous double conversion (AC-DC-AC), the inverter constantly feeds the load. When grid power drops, the battery circuit immediately discharges into the DC bus without relay mechanical switching, keeping critical servers operating continuously.
Advanced Digital Signal Processing (DSP) paired with Active Power Factor Correction (APFC) eliminates reactive currents, achieving input power factor ≥0.99 and Total Harmonic Distortion (THD) under 3%, eliminating utility transformer overheating.
Delivers pure, continuous sinusoidal power output matching or exceeding electric utility grid standards. Protects sensitive inductive loads, medical imaging ultrasound devices, and PFC-equipped modern power supplies from micro-stresses.
Shenzhen REO Power Co., Ltd. integrates advanced R&D, supply chain scalability, and ISO-standardized manufacturing to deliver bespoke OEM/ODM UPS solutions worldwide.
Our Chief Technology Officer (CTO) brings over 20 years of hands-on technical experience in power electronics engineering and ODM/OEM design. This engineering background allows us to move beyond conventional contract assembly into co-creation. We evaluate mechanical design, thermal dynamics, and circuit layouts to ensure your branded UPS lineup performs reliably across demanding enterprise environments.
From single-phase 1KVA rack-mount units to 600KVA scalable data center modular cabinets, our firmware engineers build custom DSP parameters, multi-language LCD interfaces, and integrated communication protocols (SNMP, Modbus, RS485, Dry Contacts) tailored specifically to your localized client requirements.
Operating out of two core manufacturing facilities with 10 automated assembly lines, our Monthly Output reaches 80,000 units. Quality assurance follows a strict zero-defect policy across the manufacturing cycle:
Take an inside look at our 13,500 square meter ISO9001-certified factory, SMT automation workshops, and engineering laboratories based in Shenzhen, China.
Founded in 2015, operating across 13,500㎡ equipped with international ISO9001, CE, and IEC compliance protocols.
20+ years CTO engineering expertise specializing in custom DSP firmware, customized PCB design, and hybrid hardware adaptations.
Equipped with AOI, ICT, FCT, ATE, vibration, constant temp/humidity testing, and RoHS compliance control systems.
Modern power infrastructure selection requires matching specific electrical topologies with environmental demand vectors. Below is an engineering comparison of core technical parameters offered across our OEM/ODM production lines.
| Architecture Type | Voltage & Topology | Primary Application Field | Key Technical Advantage |
|---|---|---|---|
| High-Frequency Transformerless UPS | 1-10KVA Single Phase, 10-80KVA 3-Phase | Enterprise IT Racks, Telecom edge, Cloud servers | High power density, smaller physical footprint, up to 96% operational efficiency. |
| Low-Frequency Isolation Transformer UPS | 10-120KVA 3-Phase / Split-Phase (110V/220V) | Industrial automation, heavy machinery, motor loads | Galvanic isolation protects against high back-EMF, surges, and neutral voltage displacement. |
| Modular Hot-Swappable UPS | 15-120KVA, 120-600KVA N+X Redundancy | Tier III/IV Hyperscale Data Centers, Smart Cities | Pay-as-you-grow flexibility, Mean Time to Repair (MTTR) < 5 minutes via live module replacement. |
| Lithium-Ion (LiFePO4) Integrated UPS | 1-3KVA / 6-10KVA 48V Bus Systems | Compact Edge Data Rooms, Remote Sites | 3x lifecycle vs VRLA lead-acid, 60% weight reduction, smart integrated BMS protocol. |
| Custom Medical Ultrasound UPS | Model Maxwin Pro 3KW Medical Grade | Ultrasound imaging, Operating Room diagnostic equipment | Ultra-low leakage current, zero EMI/EMC interference with sensitive diagnostic screens. |
The global power backup sector is rapidly shifting toward Lithium Iron Phosphate (LiFePO4) battery chemistries. OEM Lithium-Ion UPS solutions provide over 3,000 to 5,000 charge cycles at 80% Depth of Discharge (DoD), compared to only 300 to 500 cycles offered by traditional sealed lead-acid (VRLA) batteries.
Our engineering team integrates smart Battery Management Systems (BMS) directly into the main UPS DSP controller via CANbus or RS485 interfaces. This enables cell-level voltage balancing, thermal run-away detection, active state-of-charge (SoC) reporting, and fast recharge cycles (0 to 90% in under 2 hours).
In regions such as North America, Central America, and select Latin American markets, electrical distribution requires dual-voltage split-phase configurations. Standard European single-phase (220V/230V) UPS units cannot directly service these dual-rail installations.
Shenzhen REO Power manufactures specialized Split-Phase No Break UPS (6~10KVA) featuring internal isolation transformers. These deliver concurrent 110V/120V line-to-neutral utility rails for peripheral electronics alongside 220V/240V line-to-line feeds for heavy air-conditioning units or server power supplies from a single unified system.
Different global industry verticals present distinct power operational environments. Our OEM engineering tailors hardware builds to match regional power challenges.
For cloud hosting providers, computing downtime directly impacts service level agreements (SLAs). Our Scalable Modular UPS (120-600KVA) and Hot-Swappable 15-120KVA systems feature N+X active redundancy, 96.5% ECO efficiency mode, and centralized touchscreen telemetry, enabling rapid hot-swap module replacement without taking servers offline.
Medical imaging equipment like high-resolution ultrasound units (e.g., Model Maxwin Pro 3KW) demand clean pure sine wave power free of electrical harmonics or micro-second line drops. Our medical-grade units feature isolated power paths, low electrical leakage current, and silent cooling fan algorithms suited for clinical environments.
Factory floors suffer from severe inductive load switching, motor back-EMF spikes, and dusty ambient environments. Our Low-Frequency Transformer-Based Online UPS (10~120KVA) incorporates heavy isolation copper transformers, conformal PCB coating, and ruggedized IP steel cabinets to withstand tough industrial conditions.
Cellular towers and remote off-grid stations require continuous power under severe weather and erratic grid availability. Our Removable LCD Off-Grid Solar Inverters (3.5KW~5.5KW) and 19-Inch Network Rack Mount UPS allow hybrid integration of solar PV panels, grid power, and high-efficiency lithium battery storage.
B2B importers, brand owners, and EPC contractors demand scalable production, regional certification compliance (CE, IEC 62040-1, EN 62040-2), flexible MOQs, and tailored product packaging. Shenzhen REO Power supports complete brand white-labeling, custom enclosure colorways, local socket types (ANSI, Schuko, IEC C13/C19, UK), and regional manual translations.
We provide flexible manufacturing paths: from simple brand placement (OEM) to complete turnkey hardware and firmware engineering (ODM).
Designed for global brand owners requiring fully customized proprietary product lines:
Designed for fast-to-market distribution and localized catalog expansion:
Detailed technical answers to common queries regarding pure sine wave online UPS systems, OEM manufacturing processes, and global logistics compliance.
An Online UPS utilizes a double-conversion design (AC to DC then DC back to AC) where the inverter continuously feeds the load. This results in zero transfer time (0ms) during power outages and complete isolation from input voltage fluctuations. A Line-Interactive UPS relies on an automatic voltage regulator (AVR) tap-changer and switches to battery backup via an electromechanical relay, resulting in a 4ms to 10ms transfer delay that can trigger power loss in sensitive IT devices or precision diagnostic gear.
Pure Sine Wave outputs replicate identical sinusoidal AC waveforms provided by commercial electrical utilities (Total Harmonic Distortion THD < 2-3%). Modified sine wave or square wave units create high electrical noise, harmonics, and heat. Sensitive power supplies (Active PFC servers), medical ultrasound systems, microprocessors, and inductive motor loads require pure sine wave power to operate without component overheating or micro-processor timing errors.
Our ISO9001 factory standard includes a mandatory multi-pass quality verification workflow. Every single unit (100% of production, not random sampling) undergoes a continuous 8-hour burn-in test under full operational load. Furthermore, double Automated Testing Equipment (ATE) runs verify electrical parameters both before and after the burn-in cycle alongside AOI inspection for all SMT circuit components.
Yes. We offer fully specialized high-frequency and split-phase online UPS models engineered for 100V, 110V, 115V, 120V, and split-phase 110V/220V dual-output standards widely deployed across North America, Japan, and parts of South America.
LiFePO4 lithium batteries provide up to 3 times longer lifecycle durability (10+ years operational life vs 3 years for VRLA), support faster recharge rates (under 2 hours to 90%), reduce overall cabinet weight by up to 60%, and tolerate higher operating temperatures without degradation. Integrated smart BMS cards communicate battery state directly to the main UPS DSP controller.
We provide flexible MOQ options depending on the degree of customization required. For standard OEM branding and packaging, MOQs start from lower unit volumes, with typical production lead times ranging between 20 to 30 days depending on component availability and scheduling.
Browse our extended range of heavy-duty, rackmount, split-phase, and customized ultrasound UPS models.
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