Eltek Rectiverter Systems: The 3-Port Bidirectional Power Revolution
Eltek Rectiverter Systems redefine power infrastructure by integrating a rectifier, a pure sine wave inverter, and “built-in transfer technology” into a single modular building block. Utilizing a unique 3-port architecture, the system provides simultaneous power for AC and DC loads with a bidirectional DC port that serves as the heart of the configuration. This port is not limited to battery charging; it acts as a dynamic interface that can draw energy from a battery bank or a common DC bus powered by external rectifiers, such as the Flatpack2 series. This flexibility allows Eltek Rectiverter Systems to act as a centralized energy hub, ensuring a 0ms transfer of AC loads to the DC source during grid failure while streamlining the entire site architecture.
The platform’s modularity enables a vast array of configurations, from compact 1U standalone systems to high-capacity 90kVA indoor plants. Supporting industrial standards for 48V, 110V, and 220VDC, these systems are engineered for 96% efficiency in mains mode and extreme reliability with no single point of failure. By combining AC and DC feeds into one common unit, Eltek Rectiverter Systems significantly reduce installation space and the total cost of ownership (TCO) for telecom, utility, and railway infrastructures.
Technical Performance and Architectural Efficiency of Rectiverter Systems
Eltek Rectiverter Systems leverage patented high-efficiency technology to deliver simultaneous AC and DC power with industrial-grade resilience.
3-in-1 Module Logic
Integrates the functions of a rectifier, inverter, and static transfer switch into a single module, eliminating traditional points of failure.
Flexible Bidirectional DC Port
Seamlessly transitions between drawing energy from batteries or parallel rectifiers on a common DC bus to secure AC and DC loads.
Industry-Leading Efficiency
Achieves 96% efficiency in mains mode (AC-to-AC and AC-to-DC) and 94% in inverter mode (DC-to-AC).
True 0ms Source Transfer
Internal energy buffering ensures zero voltage interruption to the load when switching from AC grid to DC power sources.
High Overload & Trip Capacity
Features a quick trip capacity of 600% nominal current for 20ms to ensure downstream protection devices clear faults reliably.
Modular 1ph & 3ph Scaling
Supports single-phase or three-phase output configurations, including mixed setups like 3-phase input feeding a protected 1-phase output.
Eltek Rectiverter Systems – configuration levels
Tailored configurations ranging from ultra-dense edge nodes to high-voltage industrial utility systems.
Rectiverter 1U 3kVA Systems
This ultra-compact 1U solution is designed for space-constrained edge sites requiring up to 3kVA of AC backup in parallel with DC power. It can operate as a standalone node or integrate into existing DC plants, drawing energy from a shared 48VDC bus. The system dynamically manages a 4kW total capacity to secure 230V or 115V AC loads and battery-backed DC distribution.
The architecture features two front-mounted IEC sockets for rapid load connection and supports a wide operating temperature range of -40°C to +55°C. Managed by Smartpack S or Compack controllers, it ensures reliable high-efficiency power delivery in harsh industrial environments. The bidirectional DC port secures AC load continuity by drawing from batteries or common-bus rectifiers.
Rectiverter Power Core Units
Available in modular 5U-7U building blocks, these units unify AC backup and high-capacity 48V, 110V, or 220VDC power delivery into a single cohesive platform. Power Core systems are specifically engineered to SECURE mixed AC and DC loads by utilizing a high number of AC and DC MCBs alongside dedicated battery breakers for comprehensive protection. If 3-phase input architecture is used, it balances loads across phases, effectively reducing the site’s input circuit breaker requirements.
Operational flexibility is further enhanced by an optional manual bypass switch and integrated Low Voltage Battery Disconnection (LVBD). For DC-intense sites, Rectiverter Power Core systems can be equipped with additional Flatpack2 rectifiers to create a high-output hybrid energy hub. This modular approach allows for a total output capacity of up to 24kW, providing absolute power continuity and simplified scalability for both telecom and demanding industrial control environments.
Scalable Indoor Cabinets
Designed for high-capacity industrial applications, these systems scale modularly from 18kVA up to 90kVA total AC output. They support 48V, 110V, or 220VDC battery and bus standards, allowing the bidirectional DC port to draw from diverse energy sources. The inclusion of optional dual AC feeds (A&B) eliminates the need for external transfer switches.
Housed in robust IP20-21 cabinets, these plants feature flexible cable entries and comprehensive MCB distribution layers managed by Smartpack2 intelligence. The architecture supports long backup times up to 10 hours and provides a quick trip capacity of 600% to clear faults reliably. By unifying AC and DC feeds into one unit, the system optimizes site footprint while ensuring absolute power continuity.
Technical building blocks and control elements
The modular hardware and intelligent monitoring layers that drive Eltek Rectiverter Systems. This architecture unifies AC and DC power plants by utilizing a bidirectional DC bus that coordinates energy flow between batteries, parallel rectifiers, and critical loads.
Rectiverter HE Bidirectional Modules
Available in 48V, 110V, and 220VDC, these 3-port modules integrate a rectifier and pure sine wave inverter into a single building block. Each hot-pluggable module provides a continuous 1500VA AC output with an internal buffer ensuring 0ms source transfers. The bidirectional DC port coordinates energy flow between batteries, parallel rectifiers, and critical loads to maintain absolute power continuity. Module has total power capacity of 2000W
System optimization is achieved through three configurations: Full Rectiverter (1200W DC), UPS Rectiverter (150W DC), and Inverter-only (0W DC) modules. Every variant includes phase-keying jumpers for synchronized 3-phase plants and reinforced isolation barriers for enhanced site safety. This modular logic enables operators to tailor AC and DC output ratios while leveraging a unified hardware platform across the entire infrastructure.
Smartpack and Orion Controller Family
Smartpack2 and Smartpack S, as well as Delta Orion controllers act as the central intelligence, coordinating bidirectional energy flows and prioritizing AC load continuity. They manage battery health and provide site telemetry via SNMP, Modbus, and web-based interfaces.
These units allow for precise field-adjustable AC and DC limits while reporting phase-keying status for all modules in a plant. They handle advanced alarm relay mapping for site-specific signaling and support remote configuration for large-scale distributed deployments.
Integrated AC & DC Distribution
Rectiverter chassis include unified distribution layers that handle mixed 230VAC and 48/110/220VDC outputs within a single high-density frame. This includes dedicated battery protection and optional manual bypass switches for seamless maintenance.
The distribution is designed for high-end applications, supporting LVBD and LVLD logic to protect critical energy reserves while drawing from the common bus. It features a high density of MCBs to secure multiple output branches for mixed infrastructure requirements.
Looking for integrated AC & DC power solutions?
Consult with our engineering team to define modular 3-port power requirements using Eltek’s bidirectional rectiverter systems technology. We provide technical assistance in configuring high-availability architectures for 48V, 110V, or 220VDC environments, ensuring absolute AC and DC load continuity by drawing energy from both batteries and common-bus rectifiers to optimize your site infrastructure.