Perhaps you drive a car on a business basis. You then probably think it is the most normal thing in the world that it goes to the garage periodically for an MOT and a major service. You have the oil changed, the brakes checked and the software updated. Why do you do that? Because you don't want to break down along the motorway AND because you want to preserve the residual value of the car.
The exact same principle applies to your electrical installation. Yet we often see organisations investing tens of thousands of euros in high-quality Power Quality solutions, only to not look after them for years. This is an underestimated business risk. After all, the impact of downtime in your production process is many times greater than that of a stationary car.
A common misconception is that an electrical installation is static. "It works, right?" is a dangerous assumption. The reality is more complex. Power quality is dynamic and constantly changing:

An Active Harmonic Filter or capacitor bank that was perfectly tuned five years ago may now function sub-optimally, resonate or even become overloaded due to these changes. Without intervention, inefficiencies creep into your system that undermine operational reliability. With our periodic inspections - your 'MOT' - we precisely map the technical state of your filters and measurement systems. We ensure that you stay compliant, reduce risks and get the maximum life out of your investment.
HyTEPS is a niche specialist. We focus entirely on optimising voltage and power quality. Our engineers know the ins and outs of the hardware needed for this. We offer in-depth service and maintenance on the following product groups:
These advanced systems actively filter contamination(harmonics) from your voltage. They are complex devices packed with power electronics (IGBTs) and control software.

Essential for reducing reactive current and relieving your installation.

Preventive maintenance is at the heart of sustainable plant management. Our approach goes far beyond just "blowing off the dust". Our specialists carry out a thorough, structured inspection to validate the 'health' of your equipment. During a maintenance check-up, we go through a set protocol:
1. Visual and Thermal Inspection
We check the physical condition of all components. With thermography (thermal imaging camera), we detect hotspots that indicate loose connections or overloading. We check the cabling for insulation damage and check whether all mechanical fixings are still tightened to the correct torque.
2. Cleaning and Cooling
Contamination is the number one cause of death for power electronics. Dust and dirt isolate components, preventing heat from escaping. We clean air ducts, fans and heat sinks and preventively replace filter mats. We test the operation of fans and temperature sensors to ensure optimal cooling.
3. Software and Firmware Management
Manufacturers continuously develop improvements. New firmware provides more efficient control algorithms, faster response times and patches for cybersecurity. We install the latest stable versions and verify operation. This keeps your system modern, even years after purchase.
4. Measuring through Critical Components
Measuring is knowing. In capacitor banks, we measure the actual residual capacity (µF) of each capacitor. Does it deviate more than 5-10% from the specification? Then we recommend replacement to avoid resonance. We also check the operation of discharge resistors for safety.
5. Reading out Log files and Event history
The internal memories of Active Harmonic Filters and Power Quality meters contain a wealth of information. We analyse the 'Event Logs' over the past period. Have there been any temperature warnings? Have voltage dips been recorded? This gives us insight into incidents that you may not have noticed yourself, but which indicate latent problems.
6. Functional testing and reporting
We conclude with a full function test. Does the filter still reduce harmonics according to the standard? Does the capacitor bank switch on correctly? You receive a comprehensive service report from us with all measured values, findings and clear advice in understandable language. This document is also valuable for your insurance company and Scope 10 inspector.
In addition to operational reliability, safety plays a crucial role. As the person responsible for the installation, you have a legal duty of care to ensure a safe electrical installation (Working Conditions Act). Periodic maintenance by HyTEPS contributes directly to this obligation.
Our inspections perfectly match the requirements of NEN 3140 (Operation of electrical installations) and NEN 3840 (high voltage). Although we do not perform SCIOS Scope 8 or 10 inspections, our specialist maintenance of Power Quality equipment is an indispensable addition. A general inspector often takes a global look at the installation, while our engineers dive deep into the specific technology of filters and compensation systems. A well-maintained filter significantly reduces the risk of arcing and fire hazard, lowering your liability risk.

Despite good management, a calamity can always occur. External factors such as lightning strikes, extreme voltage dips or severe contamination from the grid can lead to acute damage. If your Active Harmonic Filter fails, you lose your protection. Harmonic pollution is then given free rein, which can lead to failure of other sensitive equipment in your business.

In such a situation, speed is of the essence. HyTEPS' engineers are trained in complex troubleshooting. We come on site to diagnose the problem.
Whether you opt for a one-off 'second opinion' for an unexplained failure, or a periodic subscription for continuous monitoring: our expertise guarantees that you not only collect data, but actually benefit from it.
Want peace of mind that your Power Quality equipment is always in top condition, without you having to worry about it yourself? With a service agreement from HyTEPS, we guarantee the management of your installation. We take responsibility for the planning and timely execution of inspections.
A service contract offers you concrete advantages over ad hoc maintenance:

We offer various levels of service, from basic annual inspections to comprehensive 'All-in' contracts including response-time guarantees and spare parts in stock. Speak to our engineers to determine which level suits the criticality of your business process.
HyTEPS is not a general installer, but a specialised knowledge partner. Our engineers are specifically trained in Power Quality and power electronics. We maintain close ties with the R&D departments of our manufacturers. This gives us in-depth knowledge and special software tools often lacking in the market. We work daily in the world's most demanding environments:
We recommend inspection and maintenance at least once a year. In environments with a high dust load, high ambient temperatures or extremely intensive use, a higher frequency (e.g. semi-annually) may be necessary to prevent downtime.
Basic exterior cleaning and display reading is possible. However, internal inspection requires specialised knowledge of power electronics and strict safety procedures. Opening the cabinets poses risks due to dangerous residual voltage on the DC buses and capacitors. We strongly recommend leaving this to certified specialists.
Preventive maintenance is planned and aimed at preventing problems (similar to the 'MOT' and turn for your car). Corrective maintenance takes place after a malfunction or failure has occurred and is aimed at repair and restoration (the 'breakdown service'). Preventive maintenance is always cheaper than corrective maintenance.
a, in many cases they do. We can service third-party systems, provided we have access to the necessary software, passwords and technical documentation. Please contact our service department to discuss options for your specific equipment.
No, a contract is not mandatory, but highly recommended. Without demonstrable maintenance, the manufacturer's warranty often expires over time. Moreover, the risk of malfunctions increases exponentially as the system ages.
Costs depend on the type of system, power, number of units and location of your business. We will be happy to provide a customised quotation for your specific situation without obligation.
"Don't fix what isn't broken" doesn't apply here. Firmware updates often include essential improvements in control algorithms, security and efficiency. They can also fix bugs that only occur under specific circumstances. It keeps your system stable and future-proof.
Yes, we read the logs and do snapshots to see if the filter is still functioning correctly and meeting its targets. However, for a comprehensive analysis of the entire installation (e.g. in case of vague complaints elsewhere in the premises), we recommend a specific Power Quality Analysis.
Fans are wear parts. When they fail or foul, cooling capacity decreases. The sensitive electronics become too hot, leading to a significantly shorter lifespan or immediate shutdown by the internal thermal protection.
For contract customers with critical processes, we can make specific SLA agreements on response times and availability outside office hours. Standard failures are handled with high priority within office hours.
Don't wait until the warning light comes on or your process shuts down. Secure the continuity of your operations and prolong the life of your valuable installation. Our engineers are ready to keep your Power Quality at top level.
HyTEPS
Beemdstraat 3
5653 MA Eindhoven