After Sales Services

Other special cases include inspections of stationary systems and portable equipment, both of which we can take care of. As a service-oriented partner, we use specialised software to manage all maintenance intervals and notify you well in advance when an inspection is due. We typically collaborate closely with the relevant in-house technicians to arrange maintenance appointments. They do not see us as competitors, but recognise the value of a neutral outside perspective. This is because, during their inspections, our technicians examine aspects that receive little attention in routine operation — because a certain amount of operational blindness inevitably creeps in when dealing with a system on a daily basis.

At Frequenz Elektro GmbH, we pride ourselves on our fast response times, first-class technical and personnel resources, and our extensive inventory of spare parts. This enables us to remedy any defects immediately. Many repair orders follow directly from regular maintenance, because, in addition to the measurement report which serves as proof of the protective measures taken, we also provide a defect report if necessary. This includes details of the type of damage, possible causes (e.g. wear and tear, material defects or incorrect components) and relevant standards and repair suggestions. Upon request and subject to the availability of spare parts, we can repair minor damage on site. For all other repairs, we provide a quote promptly. Many of our customers, like us, value continuous cooperation for good reason. When our technicians are familiar with the systems and the documentation is up to date, the amount of work involved is significantly reduced. Upon request, we can combine repair and maintenance work with a network analysis, during which we check that the network dimensions still correspond to the machinery. We fulfil all the obligations for installers laid down in DIN regulations, such as repairing faults in the fire alarm system within 12 hours and completing the work within 48 hours at the latest.

We recommend that customers who depend on the high availability of their systems take out a special service contract that includes a 24-hour emergency service every day of the year. Service contracts also include telephone support and remote access via TeamViewer or a VPN tunnel. This applies to all services with a software component, including automation, communication and security technology. These methods allow us to provide efficient troubleshooting support and prepare our technicians for their assignment at your premises.
Do you have any questions? We would be happy to provide you with a customised maintenance and service quote.

Problems with your energy network are no trivial matter. According to a 2015 study, the disruptions they cause amount to around 10 billion euros worldwide. In Germany, too, despite having comparatively modern systems, the problem is now being taken seriously, as evidenced by the continuously rising demand for EMC measures. One important reason for this is the growing number of single-phase consumers since the beginning of the 21st century. While a symmetrical, three-phase load on the grid was previously the norm, the last 15 years have seen an increase in disruptions caused by systems with power electronics components. Taken together, these non-linear consumers cause phase shifts and disruptive harmonics. Systems with outdated compensation equipment are particularly reaching their limits in the age of LED lighting and huge server stations. Lightning strikes, power surges and other forms of electromagnetic interference also pose a risk.

Rather than merely treating the symptoms, a network analysis by our VDS-certified EMC expert gets to the root of the causes. In accordance with the EMC Directive, we analyse the type of power supply, grounding and compensation, as well as any special processes within your electrical system. EMC measurements are performed using precisely calibrated measuring instruments which record all network anomalies over an individually determined test cycle. This enables the load profiles of all layers to be recorded at all times of the day, including the maximum values and the low-load range, which is also informative. One of the latest-generation measuring devices that we are increasingly using is the Chauvin Arnoux 8335 Qualistar Plus network analyser. This network analyser can be used to measure and analyse voltages, currents, power and harmonics in detail, as well as starting currents, imbalances and transients. However, the values themselves are only of limited significance; it is their interpretation and 'translation' into actionable recommendations that make our network analysis so valuable. We provide specific recommendations on how to eliminate faults and bring your electrical system up to the current state of the art. Request a quote for your network analysis now!

The DGUV Regulation 3 § 3 inspection of portable equipment covers all equipment with a plug that can be moved, except for equipment falling under the machine testing category according to VDE 0113. Initial and repeat inspections are distinguished because the effort involved differs significantly.

The inspection intervals for portable equipment are not specifically regulated by law. As with stationary systems, the relevant principle states that the operator is responsible for operating electrical equipment in accordance with the regulations. After all, employees work with this equipment on a daily basis, some of which can cause considerable damage. The basis for determining the inspection cycle is a risk analysis, which is included in our scope of services. This includes information on the age of the equipment, the degree of use and the environmental conditions. While a cycle of 3 months is standard in mining under extreme conditions, a cycle of 1 year is usually sufficient for workshops and 2 years for offices. The experts at Frequenz Elektro GmbH recommend an especially frequent inspection cycle for power tools – at least one annual check at the start of the season. The error rate here is often alarmingly high and temporary solutions, such as improvised insulation, are often used over long periods of time. If untested tools are found on a construction site during inspections by the employers' liability insurance association, sanctions may be issued ranging from an initial warning to the loss of the contract.

Following the initial inspection, our electricians collaborate with the client to arrange the next inspection date. This date is noted on the stickers affixed to each inspected piece of equipment.

For some of our customers, inspection of portable work equipment and operating resources is included in the maintenance contract; for all others, it is a separate service. The time and cost of an initial inspection can only be determined during an on-site appointment, unless you provide us with a complete inventory list of all operating equipment that we can work through systematically. If not, our inspectors will go through all rooms step by step and check the entire electrical inventory. In this case, we rely heavily on the cooperation of the operator, as not all operating equipment is freely accessible.

Our inspectors are experienced electricians with a keen eye for identifying deficiencies and understanding their causes. They have in-depth knowledge of the relevant standards and use calibrated measuring devices of the latest generation. They also have experience from countless inspection procedures in offices, industrial halls, logistics centres, hospitals and retirement homes. If a defect is identified, you will receive a quote for rectifying it along with the test report. This quote is provided by the inspector who discovered the defect, ensuring that we only work with first-hand knowledge. Minor defects are rectified immediately as part of the inspection.