Mitigating Grid Fluctuations in South America

Industry Context: The Challenge of Unstable Grid Infrastructure

Deploying telecommunications infrastructure in remote areas of South America—such as the Andean highlands in Chile or rural towns in Brazil—presents a significant challenge: inconsistent grid quality. Due to long transmission lines and aging infrastructure, Voltage Sags and Instantaneous Overvoltage (Surges) are frequent. Standard rectifier modules often shut down when input drops below 180VAC, forcing backup batteries into frequent deep discharge cycles, which drastically reduces their service life.

Technical Solution: The Impact of Wide Input Range Technology

The Eltek Flatpack2 24/1800 HE is engineered with exceptional input adaptability, specifically designed for these unstable power conditions:

1. 85 - 300 VAC/VDC Ultra-Wide Adaptation

The module supports an expansive input range from 85VAC to 300VAC (and 85-300VDC). This ensures that even during peak demand when grid voltage sags to 50% of nominal value, the module remains operational. At the lower limit of 85VAC, it still provides a 750W de-rated output—sufficient to sustain core communication loads and minimize battery drain, ensuring the site stays "always-on."

2. 95% Efficiency via Patented HE Technology

In regions with frequent voltage fluctuations, thermal management of the power supply is critical. The Flatpack2 utilizes patented HE technology to achieve 95% peak efficiency. High efficiency does more than lower Operational Expenditure (OPEX); it reduces the thermal stress on internal components during unstable input conditions. This robust design supports an MTBF of >300,000 hours, significantly reducing the need for expensive site visits in remote areas.

Integrated Optimization for Outdoor Cabinets

In space-constrained, enclosed outdoor cabinets, the Flatpack2 24/1800 HE offers distinct physical advantages:

· High Power Density (22 W/inch³): Its compact 1.95kg design (109 x 41 x 327mm) allows for easy multi-module parallel configuration within a 1U shelf.

· ±5% Dynamic Current Sharing: When the grid voltage spikes or drops rapidly, the regulation time is less than 50ms, maintaining a stable DC bus voltage and protecting sensitive PLC or control systems.

Selection Guide: Compliance and Standards for South America

For B2B procurement managers, when selecting power modules for unstable grids, focus on these critical parameters:

· Electrical Safety Standards: Compliance with IEC 60950-1 and UL 60950-1 is mandatory for most utility and telecom projects across South America.

· Harmonic Suppression (THD < 4%): Maintaining low Total Harmonic Distortion at full load prevents the power module from introducing secondary interference back into the local grid.