AUTOMATIC VOLTAGE OPTIMIZERS
SINGLE PHASE M AND THREE-PHASE T / Y
Alarm indication and dry contacts for connection to an external device for protection against: overload, over/under voltage
Potentiometer to adjust the stabilised output voltage
Digital network analyser and energy meter
ECOSTAB M2.B SINGLE-PHASE 230V 50/60HZ VOLTAGE OPTIMISERS – IP21 INDOOR MODELS
ECOSTAB T3.B THREE-PHASE 400V 50/60HZ VOLTAGE OPTIMISERS – IP21 INDOOR MODELS
ECOSTAB Y3.B THREE-PHASE + N 400V 50/60HZ VOLTAGE OPTIMISERS – IP21 INDOOR MODELS
Fittings: Potentiometer to adjust the stabilised output voltage; Digital network analyser and energy meter; Alarm indication and dry contacts for connection to an external device for protection against: overload, over/under voltage; Pilot lamps
IREM voltage optimisers are designed to deliver the declared power permanently (24/7) under the worst operating conditions, i.e. at full load, at minimum input voltage and max input current and at the declared ambient temperature.
AUTOMATIC VOLTAGE OPTIMISERS
An electronic control circuit detects the voltage delivered by the voltage optimiser and compares it to a reference voltage. If the difference between the output voltage and the reference voltage exceeds the preset tolerance limits, an error signal is generated; this signal may be either negative or positive according to whether the output voltage is lower or higher than the preset value. This signal activates the servomotor which moves the mobile contacts (electrographite rollers / brushes) of the variable autotransformer thus changing the transformation ratio in order to supply the additive or subtractive voltage needed to restore the value within the predetermined limits to the primary winding of the series transformer. The root-mean-square value (RMS) of the output voltage is stabilised and consequently not affected by possible harmonic distortions present in the input mains. This regulation system has the advantage of not having mobile contacts in series to the power supply line.