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SIRIUS
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The SIRIUS line covers the range from 30kVA to 2000kVA and allows for the choice of several input
voltage variationpercentages within a broad range from +30% up to -45%.

The SIRIUS voltage stabilisers are supplied with independent regulation on each phase.The SIRIUS
type is used when the main is unbalanced and when unbalanced three-phase loads and/or single-
phase loadsneed to be supplied. In this situation the presence of the neutral wire is required.

The stabilisers are air cooled (natural convection with cabinet internal temperature lower than 40°C).
The measuring instrumentation for the SIRIUS stabilisers is incorporated in a control panel on the
cabinet door andconsists of two multi-task digital network analysers. Such instruments are able to
provide with informationregarding the status of the lines upstream and downstream the voltage
stabiliser such as phase and linked voltages,current, power factor, active power, apparent power,
reactive power, etc.

Such information can also be monitored on a remote PC via an RS485 output an RS485/RS232
converter and a specialsoftware package supplied with the unit.
Pilot lights are provided for each phase signalling ‘power on’, reaching of voltage regulation limits
and direction of voltageregulation (increase/decrease). Alarms for minimum and maximum voltages,
maximum current, over-temperature and ventilation failure are alsoindicated. The alarm indicators
are accompanied by an acoustic alarm.

In the SIRIUS type, these signals are located on the control panel mounted on the cabinet door and
consisting of a set ofLEDs. The stabiliser is provided with a voltage regulator protection circuit
controlled by thermal probes. The circuit works in caseof temporary overload: it opens the connection
between the voltage regulator and the buck/boost transformer and shortcircuitsthe transformer
primary winding at the same time.

By doing so, the transformer voltage drop is cancelled and the user can be supplied the mains
voltage (although not stabilised) without interruption. The auxiliary circuit is protected by fuses.

The logic control, performed on the true rms voltage, is based on a 2-way microprocessor. By
using this
device, monitoring the system and setting the stabiliser parameters via a PC
connection are made possible.

 

 
SIRIUS ±25% AUTOMATIC THREE-PHASE VOLTAGE STABILISER
 
TYPE Rated Power
(kVA)
Input Voltage
±25% (V)
Max Input
Current (A)
Output Voltage  
± 1% (V)
Rated Output Current (A) Efficiency (%) Response Time (ms/V) Cabinet Type Weight (kg)

Y75-25

75

400

144

400

108

>98

12

40

550

Y100-25

100

400

193

400

144

>98

12

40

600

Y125-25

125

400

241

400

181

>98

12

41

800

Y160-25

160

400

308

400

231

>98

12

41

900

Y200-25

200

400

385

400

289

>98

12

41

1200

Y250-25

250

400

482

400

361

>98

12

42

1400

Y315-25

315

400

607

400

455

>98

12

42

1600

Y400-25

400

400

770

400

578

>98

12

42

2000

Y500-25

500

400

963

400

723

>98

15

43

2600

Y630-25

630

400

1214

400

910

>98

15

43

2800

Y800-25

800

400

1541

400

1156

>98

15

44

3000

Y1000-25

1000

400

1927

400

1445

>98

15

44

3400

Y1250-25

1250

400

2408

400

1806

>98

15

44

3900

 
     
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