April 15, 2026
The Mexican energy sector is undergoing a significant transition toward decentralized automation. For modern substations, the integration of Intelligent Electronic Devices (IEDs) and sophisticated relay protection systems requires a power architecture that is both resilient and versatile. In many regions, aging grid infrastructure frequently suffers from voltage sags and transients, making "Operational Reliability" a top priority for utility operators seeking to prevent catastrophic system failures.
Client and Application: Substation Automation & Relay Protection
This project was initiated by a major energy contractor in Mexico responsible for upgrading a regional substation's Relay Protection and Control Systems. The site faced critical challenges with its legacy power setup:
· Voltage Instability: Frequent fluctuations in the local grid were causing intermittent resets of sensitive protection relays.
· Communication Gaps: The inability to adjust battery voltage through the existing monitoring system due to protocol silos.
· Dual Power Requirements: The system needed to provide high-capacity 110VDC for breaker control circuits and 230/400VAC for auxiliary automation hardware simultaneously.
Our Solution: Eltek Rectiverter Power Core Integration
To meet these demanding requirements, we supplied three units of the Eltek Rectiverter Power Core, a modular, all-in-one AC/DC power gateway. This system eliminates the need for separate rectifiers and inverters by performing bidirectional power conversion in a single, high-efficiency stage.
Key Technical Specifications (Parameterized Evidence):
· AC Configuration: Input/Output 230/400 VAC, 3-Phase, 50/60Hz.
· AC Capacity: Maximum output of 18 kVA, ensuring ample headroom for auxiliary loads.
· DC Parameters: 110 VDC Input/Output with a precision adjustable range of 100-125 VDC.
· DC Capacity: Maximum output of 14.4 kW for critical DC control loops.
· Total System Power: Combined maximum output of 24 kW.
· Operational Efficiency: >94% typical efficiency, reducing thermal load within the substation cabinets.
Project Execution and Delivery
Understanding the urgency of grid upgrades, the project followed a strict execution timeline:
· Lead Time: 8-10 weeks from order confirmation and down payment.
· Quantity: 3 customized integrated modules.
· Integration: Seamless interface with the site’s existing SCADA system, resolving the previous communication protocol mismatches.
Client Feedback: Stability and Precision
Upon commissioning, the client reported an immediate resolution to the "Voltage Monitoring Failure" issue. The technical lead noted:
"The Rectiverter's ability to maintain a steady 110VDC output while handling 400VAC three-phase loads has significantly simplified our site architecture. The 0ms transfer time provides our relay systems with the absolute continuity required for grid safety."
Conclusion: Securing Critical Energy Assets
This Mexico-based project highlights the importance of modular, high-availability power in critical infrastructure. By bridging the gap between AC and DC power requirements within a single, monitorable core, the Eltek Rectiverter ensures that substation automation remains online even under extreme grid stress. For B2B operators, this solution represents a future-proof investment in grid stability and operational uptime.
