Voltage dips in the grid – an invisible source of risk for industrial plants!
On April 29th at 7:00 PM, our PQube3 meter registered a significant voltage dip (sag, auto-reclose, short-circuit, dip) at our feeder, with a reduction of up to 81.8 % on L2 – an undervoltage of 6.35 % over 0.83 seconds. Such events sometimes go unnoticed, but can just as easily cause production downtime, disruptions to sensitive equipment, or malfunctions in control systems.
What happened?
• LL voltage L2–L3: dropped to only 18.2 %!
• LN voltage L2–N: short-term at 6.4 %
• Frequency remained stable – so it was not a general network problem, but a local voltage drop.
Solutions against voltage drops:
1. OSKAR (Online voltage compensation actively controlled): Ideal for rapid voltage drops and surges, supplies critical consumers without switching time
2. DVR (Dynamic Voltage Restorer): Electronic voltage regulator with dynamic control and scalability. Effective for permanent voltage fluctuations or short voltage dips.
3. AVC-RTS (Active Voltage Conditioner) Automatic voltage correction and outage bridging – stabilizes the voltage by feeding in energy from an energy storage device and bridges complete short interruptions of up to 3 seconds.
With precise power quality monitoring, causes can be identified, risks assessed and targeted technical countermeasures such as voltage stabilizers, online voltage correction or voltage regulators can be applied.
Do you experience recurring power outages or sensitive processes? Let's work together to find a solution.
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