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electrical infrastructure August 25 2026

Dual Redge Rooftop System Delivers Continuous Climate Control for Critical Electrical Container Application

Project Information

Location: Eastern Europe

Sector: Critical electrical infrastructure

Application: Climate control for containerised electrical cabins

Solution: Two Redge rooftop units with PLC-controlled automatic changeover (one duty, one standby)

Project Overview

Containerised electrical cabins are widely used to house critical electrical equipment in industrial and infrastructure projects. Maintaining stable internal environmental conditions is essential to protect sensitive electrical components from excessive heat, humidity and condensation, while ensuring reliable operation throughout the year.

For this project, two electrical containers were supplied for deployment in Eastern Europe, where the equipment was expected to operate in challenging climatic conditions, including prolonged periods of sub-zero winter temperatures. The customer required a climate control solution capable of maintaining consistent internal conditions 365 days a year while providing maximum operational reliability.

A key project requirement was continuity of operation. Any interruption to the climate control system could compromise the internal environment of the electrical cabins and potentially affect the performance of the equipment they protect. The customer therefore requested a solution that combined compact installation, efficient operation and automatic system redundancy without increasing operational complexity.

In addition, the rooftop units needed to be suitable for installation directly on the containers while meeting the project's requirements for a lightweight and space-efficient design.

Redge Solution

To address these requirements, the project incorporated a dual rooftop configuration designed to provide continuous environmental control with automatic backup capability.

1. Primary Rooftop Unit

A Redge rooftop unit was installed as the primary climate control system for each container.

Its role is to:

  • Maintain the required internal temperature and humidity throughout the year.
  • Deliver a cooling capacity of 35 kW.
  • Provide an airflow rate of 7,000 m³/h.
  • Support climate control with an integrated electric post-heating element.
  • Ensure continuous control of temperature and humidity throughout all seasons.

2. Standby Rooftop Unit

A second Redge rooftop unit was installed as a dedicated standby unit.

Rather than operating simultaneously, this unit remains available to take over automatically should the primary rooftop experience a fault. This redundant configuration supports uninterrupted climate control without requiring manual intervention.

3. PLC-Controlled Automatic Changeover

A PLC-based control system was integrated into the installation to manage the two rooftop units.

The PLC continuously monitors system operation and automatically transfers operation from the primary unit to the standby unit whenever required. This immediate changeover helps maintain the same climatic conditions inside the electrical cabin, supporting continuous protection of the enclosed electrical equipment.

This approach combines operational resilience with a compact installation, making it well suited to critical containerised applications where reliability is a primary design consideration.

Explore the EVIO rooftop range .

Results

  • Continuous temperature and humidity control throughout the year.
  • Automatic changeover between duty and standby rooftop units to support operational continuity.
  • Redundant system architecture designed for critical electrical applications.
  • Compact rooftop installation suitable for container-mounted infrastructure.
  • Solution designed to operate in demanding climates, including sub-zero winter conditions.
  • Climate control that supports the protection of sensitive electrical equipment.

Supporting Critical Infrastructure with Reliable HVAC

Projects involving electrical infrastructure, data, utilities and other mission-critical applications often require climate control systems that prioritise reliability as much as thermal performance. Redge solutions can be configured to meet these requirements, including installations where redundancy, automated controls and continuous operation are essential.

To discuss a similar project or learn how Redge can support your containerised or critical infrastructure application, contact our team via the Redge contact page .

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