SINGLE PHASE M AND THREE-PHASE T / Y
|POWER RANGE||From 8 to 2800 kVA, in single-phase and three-phase version.|
|ACCURACY||±1% RMS also in presence of high harmonic distortions.|
|OVERLOAD CAPACITY||10 times the rated power for 10 ms, 5 times for 6 s, 2 times for one minute|
|POWER FACTOR AND LOAD VARIATION INSENSITIVITY||The accuracy and the regulation speed remain unaltered under any load condition (full load or no load, with inductive or capacitive loads).|
|FREQUENCY VARIATION INSENSITIVITY|
|HARMONIC DISTORTIONS||The harmonic distortion is always maintained within 0.2% in any operating condition|
|IMPEDANCE||The installation of an Ecostab voltage optimiser in a preexisting plant does not require a new calculation of the protections because the internal impedance of the optimiser does not significantly affect the line impedance.|
|OPERATING TEMPERATURE||Ecostab voltage optimisers are designed for operation at a maximum ambient temperature of 40°C in the most demanding conditions: continuous duty, full load and minimum input voltage. Models suitable for higher temperatures are manufactured on request.|
|DEGREE OF PROTECTION||IP00, IP21, IP54 INDOOR and IP54 OUTDOOR|
|COOLING SYSTEM||All IP21 models are designed for natural air convection – FAN-FREE. IP54 models are cooled by fans or by air conditioning depending on the ambient conditions.|
|RELIABILITY||Ecostab voltage optimisers use the same technology and the same components as Ministab and Sterostab voltage stabilisers, that IREM has been manufacturing for over 60 years. The MTBF exceeding 500,000 hours is the result of IREM continuous improvement in technical aspects and production process.|
|INSTALLATION||The voltage optimiser is installed after the energy counter and before the electric users.|
|STANDARD FITTINGS||Digital network analyser / energy meter, pilot lamps, potentiometer, alarm indication and dry contacts for connection to an external device for protection against: overload, over/under voltage|
|SPECIAL VERSIONS||Ecostab voltage optimisers can be equipped on demand with special fittings in separate cabinet, like e.g.: maintenance bypass, thermal magnetic circuit breakers, surge/lightning arresters, harmonic filters.|
|REMOTE CONTROL||Ecostab voltage optimisers can be equipped with an optional monitoring system permitting the remote control via ETHERNET, INTERNET, GSM/GPRS.|
|COMPLIANCE WITH STANDARDS||
Ecostab voltage optimisers comply with the following Directives:
Ecostab supplies the load with a stable voltage having a value less than or equal to the nominal mains voltage.
The voltage with which the load is powered can be set through a potentiometer between the nominal value and -8%.
The desired value is linearly adjustable between a minimum value of 368V (-8%) and a maximum value of 400V (± 0%).
In the entire range of variation of the mains voltage allowed by the standard (± 10% of the nominal value of 400V) the load is always powered by the Ecostab at the desired voltage, kept stable at ± 1%.
For example, if you want to select a supply voltage to the load of 380V equal to -5% of the nominal voltage of 400V, the selected voltage value is kept constant within the entire range of the input variation between 360V and 440V.
SINGLE-PHASE 230V 50/60HZ VOLTAGE OPTIMISERS – IP21 INDOOR MODELS
THREE-PHASE 400V 50/60HZ VOLTAGE OPTIMISERS – IP21 INDOOR MODELS
THREE-PHASE + N 400V 50/60HZ VOLTAGE OPTIMISERS – IP21 INDOOR MODELS
Standard fittings: Potentiometer to adjust the stabilised output voltage; Digital network analyser and energy meter; Display and storage of saving data in absolute value and %; Communication port: ETHERNET, USB; Alarm indication and dry contacts for connection to an external device for protection against: overload, over/under voltage; Pilot lamps
Optional fittings: Polycarbonate screen for IP2x protection at open doors (for “AJ” models in cabinet); Class II or Class I+II surge arresters;
Connection to the iremON remote service
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 ECOSTAB S SINGLE PHASE M AND THREE-PHASE T / Y input voltage and max input current and at the declared ambient temperature
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 rootmean-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.