Notstromversorgung & Netzersatzanlagen (NEA)
If the external power supply fails, it is important to have an emergency power system available to maintain the power supply. Our emergency power systems are available as free-standing containers or in a compact design for installation in existing rooms. They can be powered by diesel or gas generators and are available in all sizes. In addition, we offer UPS systems, power cabling and security solutions.

Robust, Reliable Protection
Emergency power systems are still often implemented today with the help of gas or diesel generators. There are a number of potential stumbling blocks to be considered during project planning and implementation. The engine used must be precisely matched to the generator output and the system must be designed in such a way that it corresponds to the conditions of the consumers to be supplied. In our numerous successfully implemented projects, we have repeatedly found that emergency power systems were either incorrectly designed or not highly available enough.
Alternative fuels can form part of a long-term standby power strategy. Depending on technical suitability, options may include hydrogen, biogas or plant-based oils. Combined heat and power can be incorporated into a standby power concept where its design and operating mode are appropriate. Energy demand and emissions depend on fuel, efficiency, load profile and heat use. Redundancy and maintenance must support the agreed availability requirements. An uninterruptible power supply (UPS) provides short-term bridging until a suitable supply is available; its autonomy must be coordinated with the complete standby power concept.
An emergency power concept is designed for defined failure scenarios, bridging periods and operating objectives. Primary and redundant supply paths are assessed for possible common points of failure. Regular maintenance, monitoring and functional tests support the intended performance.
Backup generators: from mains failure to stable supply
Capacity and load steps
Generators are sized for the loads they must supply. Starting currents, load steps and nonlinear loads matter alongside continuous power. UPS systems, cooling and auxiliary services must be included in the combined load profile.
Transfer and UPS coordination
A backup generator takes time to accept load. The UPS bridges that interval according to its design. Load sequencing, permitted voltage and frequency, and battery recharging must be coordinated.
Autonomy and installation
Fuel inventory, replenishment and required runtime are planned together. Ventilation, exhaust, noise, vibration and maintenance clearances influence installation. Starting batteries and auxiliary supplies also affect availability.
Testing under realistic conditions
A no-load start does not demonstrate data centre supply capability. Agreed load and transfer tests verify system interaction. Test scope, regular maintenance and documented return to mains operation are defined.