Power quality

Faults inevitably arise in the operation of production plants, and they can result in undesirable voltage fluctuations. These faults are often caused by modern technologies such as frequency converters for electric motors, LED lighting and controlled systems, all of which can adversely affect the public utility grid. This means the production plant receives inferior voltage quality, which can lead to problems such as machine downtime, data transmission faults and malfunctions. For the operator of the plant, these problems have both economic consequences (production downtime costs) and legal consequences (loss of the manufacturer’s guarantee and insurance coverage).

A battery inverter with power quality or active filter function can effectively compensate for these unwanted electrical faults in the voltage supply, regardless of whether they occur in the low-voltage plant itself or arise from problems in the medium-voltage grid. This allows us to provide voltage of a consistently high quality, which also ensures reliable plant operation.

• Compliance with normative requirements through DIN standards for utility grid quality (DIN EN 61000-2-2/4 and EN 50160)
• Maintenance of guarantee for plants by eliminating harmonics and fulfilling manufacturer specifications
• Reduced load on equipment and plants
• Minimised interference lowers noise levels and reduces power loss
• Prevention of unexplained switching operations on fuses and circuit breakers

Each plant operator is responsible for ensuring that the voltage quality in their plant complies with the standards. This is critical in securing insurance coverage for claims related to the utility grid, the plant, equipment and individuals. Machine manufacturers also provide detailed specifications on the voltage quality required to uphold guarantees in accordance with the applicable VDE directives, the Machinery Directive or DIN/EN/ISO standards. If the mains voltage does not meet these standards, this could be regarded as improper operation of the plant, and manufacturers may reject the guarantee in the event of claims. An inverter with power quality or active filter function can assist with meeting specifications, minimising risks, and ensuring production reliability.