Voltage spikes, fluctuations and power outages can happen anywhere in the world, from large urban centers to remote regions where the mains grid is unstable and power supply is unreliable. Conventional vaccine refrigerators can be damaged by electrical problems, exposing vaccines to rising temperatures for unknown periods of time before the damage is noticed. That’s why every MetaFridge mains-powered refrigerator includes PowerMinder technology, a built-in system that guards against damage from dangerous voltages and maintains safe storage for sensitive vaccines.
PowerMinder performs two essential functions. It stabilizes voltage fluctuations within a wide input range, and it provides protection from high or low voltage events outside the safe and acceptable range. The PowerMinder voltage protection and stabilizer is integrated into every MetaFridge, so each unit can be plugged directly into the wall socket without need for external protection.
The PowerMinder protection mode activates whenever the voltage goes above or below the operating range.
A similar voltage protection system protects the MetaFridge CFD-50 SDD (solar direct drive) from damage from voltage fluctuations whenever it is plugged into mains power.
Line voltage at an East African clinic, showing rapidly fluctuating voltages well below the nominal voltage of 240 V. PowerMinder’s voltage stabilization allows the MetaFridge to continue operating down to 82 V. When voltage goes under 82 V, power is disconnected and remains disconnected until line voltage has stabilized and remained in range for at least 5 minutes.
Mains-powered and solar vaccine refigerators protected by MetaFridge® Technology.
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