Product Overview
The CE+T Sierra25 T721D30201 (48/230-277) is industry-leading three-port fully bidirectional power converter developed by CE+T Power, functioning as modular UPS, battery charger and grid-tied inverter all-in-one. Single unit rated 3kVA/2.7kW with 48VDC input and 230/277VAC output, multiple modules can be paralleled and combined into single/three-phase system, expandable from small standalone unit up to 2MW large-scale energy storage & uninterrupted power station. With native STS transfer function and intelligent energy management, it is widely deployed for 5G telecom base station backup, edge data center UPS, off-grid solar storage, industrial critical load and peak-shaving grid optimization projects.
Key Features
Unique 3-way bidirectional design (2AC+1DC port), realizes AC-DC/DC-AC/AC-AC free bidirectional energy conversion
Single module: 3kVA/2.7kW rated, unlimited parallel expansion, whole system scalable up to 2MW/2.2MVA
Ultra-high conversion efficiency: AC→AC up to 96%, DC→AC up to 93.7, effectively reduce long-term power consumption
Built-in integrated STS static transfer switch, zero-break switching between mains & battery without extra switchgear
Standard 2U 19-inch rack-mounted compact size, easy embedded installation in standard communication cabinet
Wide input tolerance: DC 32~63VDC, AC 150~293VAC, adapts unstable mains & generator power source
Supports multiple working modes: UPS backup, off-grid solar inverter, grid peak shaving, battery charging & V2G energy feedback
Compatible TSI-T2S monitoring controller, Modbus/CAN remote communication for centralized system management
Wide operating temperature -40℃~+65℃, stable operation for harsh outdoor & cabinet confined environment
EN61000 EMC, CE & RoHS certified, full OVP/OCP/SCP multi-layer safety protection
Technical Specifications
| Item | Details |
| Model | Sierra25 |
| Part Number | T721D30201 |
| Brand | CE+T Power |
| DC Input | 48VDC (Working Range:32~63VDC) |
| AC In/Out | 230/277VAC, 50/60Hz (150~293VAC) |
| Rated Capacity | 3kVA / 2.7kW |
| AC→AC Efficiency | Up to 96% |
| DC→AC Efficiency | Up to 93.7% |
| Cabinet Spec | Standard 2U 19-inch Rack |
| Dimension | 88 × 103 × 435 mm |
| Cooling | Intelligent temperature-controlled fan cooling |
| Expandability | Paralleled up to total 2MW system |
| Communication | Compatible T2S controller, Modbus/CAN bus |
| Working Temp | -40℃ ~ +65℃ |
| Storage Temp | -40℃ ~ +70℃ |
| Certifications | CE, EMC, RoHS |
| MOQ | 5 PCS |
| Unit Price | $705-$985/pc |
| Lead Time | 30 Working Days |
| Warranty | 12 Months |
Applications
4G/5G Macro & Micro Base Station AC Backup UPS System
Edge IDC Server Room Uninterrupted Critical Power Supply
Off-grid Solar/Wind Hybrid Energy Storage Inverter
Industrial Automation & Precision Instrument Emergency UPS
Banking, Security Monitoring Centralized Backup Power
Grid Peak Shaving & Distributed Energy Storage Projects
Why Choose Us
We are a professional manufacturer and one‑stop solution provider for communication DC power systems, boasting mature R&D strength, large‑scale production capacity and flexible service modes. We fully support OEM and OBM cooperation, helping global partners create differentiated power products and brands.
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Powerful R&D & Customization Ability
We have a professional technical team with years of experience in the power industry. We can provide personalized customized services covering power configuration, external interfaces, functional parameters, appearance design and logo printing, to satisfy diverse demands from telecom operators, system integrators and equipment manufacturers.
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Comprehensive OEM & OBM Services
We offer full‑cycle cooperation support from product design, prototype testing, certification to mass production. With efficient development process and strict quality management, we help you quickly launch products and build exclusive brand advantages.
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Large Production Capacity & On-time Delivery
We own standardized production workshops and complete production lines. Relying on a stable supply chain and mature production technology, we maintain sufficient inventory and strong production capacity, ensuring on-time delivery even for bulk orders and long-term cooperative supply.
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Strict Multi-level Quality Inspection
All products will pass full-load operation test, high-low temperature aging test, safety performance test and simulated on-site operation test before delivery. We adopt high-quality original components and implement strict quality control standards to guarantee long-term stable operation of products in various harsh environments.
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Full Lifecycle Technical & After-sales Support
We establish a complete service system including pre-sales consultation, in-sales technical guidance and after-sales maintenance. Our technical team responds quickly to provide remote debugging, on-site technical guidance and spare parts supply, protecting the stable operation of your power system all the time.
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Rich Global Project Experience
Our products have been exported to many countries and regions, widely applied in communication, data center, industrial control, new energy and other fields. With rich project experience, we can provide targeted power solutions for different regional standards and application scenarios.
We sincerely look forward to establishing long‑term stable cooperative partnership with you.
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