What defines the power of a voltage stabiliser?
The rated power is the fundamental parameter of every voltage stabiliser: it indicates the maximum power the unit can deliver and is expressed in kVA. This value, shown on the data plate, represents the stabiliser’s operational capacity under specified service conditions. However, rated power cannot be considered in isolation—factors such as service class, network voltage fluctuations, and ambient temperature have a decisive influence on actual performance.
What role does the service class play in determining real power?
International standards define several service types, corresponding to different operating conditions. A device can be designed to work with intermittent loads or, conversely, in continuous duty.
IREM voltage stabilisers are built to operate under the most demanding condition: continuous service at rated power for an unlimited time. This means that the equipment is designed for a 100% duty cycle, with no performance reduction over time. Every component is selected to withstand maximum power continuously, ensuring maximum reliability even in the most demanding industrial applications.
It is precisely this feature that allows IREM to declare the power of its stabilisers as heavy duty.
How do voltage fluctuations affect performance?
Voltage variations are among the most challenging working conditions for a stabiliser. When the supply voltage becomes unstable, the device intervenes by generating an additive or subtractive voltage that corrects the output in real time, keeping it constant and close to the nominal value.
When the network reaches its minimum voltage level, the stabiliser operates under its heaviest load condition. The IREM Ministab and IREM Sterostab voltage stabilisers maintain their performance even under these extreme conditions, ensuring perfectly stabilised voltage for an unlimited time without any functional degradation. This feature represents a distinctive element of IREM technology in the field of POWER QUALITY.
Why is ambient temperature such an important factor?
Every energy conversion process generates heat. In electrical machines, the ability to dissipate this heat efficiently is essential to ensure component reliability and longevity.
IREM has chosen a fan-free cooling system based on natural conduction and convection principles. In this way, heat dissipation occurs through simple thermal exchange with the surrounding air, without the use of fans or moving parts subject to wear.
The fan-free natural cooling system minimises energy losses, improves acoustic comfort, and limits the ingress of dust into the unit. IREM voltage stabilisers, with IP21 protection class, therefore exploit an intrinsically reliable system that ensures thermal stability and reduced maintenance over time.
What does “heavy duty” power mean for IREM?
The term “heavy duty” is not just a design specification but a true design philosophy that characterises all IREM products. The Ministab and Sterostab voltage stabilisers are conceived to operate continuously, under severe network conditions and with demanding loads, without requiring any derating.
The combination of continuous duty operation, high voltage compensation capability, and fan-free cooling enables IREM stabilisers to ensure stable performance, operational safety, and long service life.
This is the real power—the power that IREM declares as heavy duty—a synonym for long-term reliability and manufacturing quality dedicated to improving POWER QUALITY.
