Voltage regulators

Voltage regulators: guarantee continuity during voltage fluctuations

At a time when the power grid is under increasing strain, unpredictable voltage variations pose a silent threat to your business continuity. Even a fraction of a second of undervoltage or a sudden spike can lead to disrupted PLCs, unexplained machine failures and costly damage to sensitive electronics.

A voltage regulator, or Active Voltage Conditioner (AVC), completely eliminates this risk. This system acts as an active buffer between the grid and your installation: it continuously measures the incoming voltage and corrects deviations in real time to a perfect sine wave. This keeps your equipment running within specifications at all times, regardless of the quality of the supply. Choose security and prevent downtime before it occurs.

For whom is voltage stabilisation crucial?

This technology is essential for organisations where voltage quality(Power Quality) tolerances are close. We see this mostly at:

• Industry & Manufacturing: CNC machines, extruders and robotics that jam at the slightest dip in voltage.
• Data centres: where servers and cooling systems depend on a stable power supply.
• Hospitals: Where medical equipment (MRI, CT) does not tolerate fluctuations.
• Maritime sector: where on-board grids are often unstable due to heavy loads (thrusters).

Are you a Technical Manager or Installation Manager? Then you probably recognise the vague malfunctions that occur "when the big machines start".

Why is power quality a business priority?

Equipment is becoming increasingly sophisticated, but also more sensitive. A modern production line is full of power electronics that immediately go into failure for a deviation of only a few percent in voltage. The consequences are concrete:

• Downtime (Downtime): A dip of 20 milliseconds can shut down a process of hours.
• Material damage: Printed circuit boards and power supplies wear out faster or burn out with repeated surges.
• Product rejection: In the process industry (e.g. extrusion or chemistry), a short interruption often means that the entire batch can be thrown in the bin.
• Warranty issues: Machinery suppliers reject claims if it turns out that the supply voltage did not meet the standard.

The solution: active voltage regulation

Whereas a UPS (Uninterruptible Power Supply) is mainly designed to cope with power outages (with batteries), an AVC is designed to ensure continuous power quality.

• Correction of Dips and Peaks: An AVC can correct long-term voltage variations (e.g. ± 15%) and short-term deep dips to a tight nominal voltage.
• Speed: Response time is extremely short (often <3 milliseconds), so sensitive electronics do not even notice the disturbance.
• No Batteries: Unlike a UPS, an AVC usually does not need batteries for voltage regulation, which saves on maintenance and space.

Nuance: In the event of a complete power failure (blackout), an AVC does not help; that requires a UPS or emergency generator. However, for 90% of Power Quality events (dips/peaks), an AVC is the more efficient solution.

Common mistakes in voltage problems

1. Blindly rely on the UPS: A UPS is expensive to buy and maintain if you only want to handle voltage variations. An AVC is more specific and efficient for this purpose.
2. Don't measure: Buying a solution (such as a capacitor bank) without knowing the cause often leads to worsening problems (e.g. resonance).
3. Focus on averages: Looking at average voltage tells you nothing. The momentary dips (milliseconds) cause the damage. You need equipment that records events.
4. Symptom management: resetting machines or replacing circuit boards does not solve the core problem. The costs keep coming back.