This document serves as the user's manual for ORTEA SpA's VEGA-ANTARES single-phase voltage stabilizers and ORION three-phase voltage stabilizers. It provides essential information for correct operation, efficient maintenance, safe use, and personnel safety.
Function Description:
The VEGA-ANTARES and ORION voltage stabilizers are designed to regulate output voltage to a set value, compensating for variations in the mains supply. They operate based on the RMS voltage and are insensitive to harmonics in the mains. The core components include a buck/boost transformer (if provided), a motorized toroidal autotransformer (voltage regulator) with a continuously variable transformer ratio, and a microprocessor-based electronic control circuit. The control circuit continuously compares the output voltage to the set value. If the variation is too high, it drives the voltage regulator gearmotor, which adjusts the regulator rollers to vary the voltage supplied to the buck/boost transformer's primary winding. This action adds or subtracts voltage to the mains, thereby stabilizing the output. For units without a buck/boost transformer, the control board and gearmotor directly move the rollers on the regulator to ensure the nominal output voltage. The stabilizers are intended for connection between the mains and the user's load.
Important Technical Specifications:
- Regulation Principle: Based on maximum input current, RMS voltage, and insensitivity to harmonics.
- Admitted Load Range: 0-100%.
- Admitted Harmonic Content in Load Current: 30% max (derating required for higher percentages).
- Load Power-Factor Influence: None.
- Output Voltage Harmonic Distortion: None introduced.
- Type of Regulation: Single-phase for VEGA-ANTARES, independent on each phase for ORION.
- Type of Load: Single-phase for VEGA-ANTARES, 3-ph., 2-ph., 1-ph for ORION.
- Admitted Load Unbalance (ORION): Up to 100%.
- Input Neutral Wire Availability (ORION): Necessary.
- Operating Environment: Designed and built in compliance with European Directives (2014/35/EU Low Voltage, 2014/30/EU EMC) and applicable parts of EN61439-1/-2. Suitable for both A and B environments.
- Ambient Temperature: -25/+45°C (unless otherwise agreed).
- Installation Altitude: Max 1000m a.s.l. (unless otherwise agreed).
- Output Voltage Settings (Dip-switches 1-2): 210V, 220V, 230V (default), 240V.
- Output Voltage Finer Adjustment (R46 Trimmer): ±5% regulation range.
- Accuracy Adjustment (R10 Trimmer): Set between 3 and 9 hours on the dial.
- Alarm Buzzer (JP3 Jumper): Enabled (default) or disabled.
- Volt. Alarm (JP1 Jumper): +10/-20% (default) or ±6%.
Usage Features:
- Installation: Units must be installed according to the instructions, ensuring proper earthing. The installation site must be flat, able to withstand the unit's weight, and have adequate ventilation to dissipate heat. Clearances of 150-200mm around cabinet air outlets are required. Wall-mount installation is allowed for single-phase units up to 15kVA.
- Electrical Connection: Connections to mains and load must be carried out by trained and qualified personnel using suitable tools and PPE, in conformity with local regulations. The supplying line must match the nameplate technical data. Upstream and downstream interrupting devices with appropriate capacity are required but not included as standard. For three-phase units, the neutral wire must be available and connected.
- Start-up: After connecting, supply voltage, check output voltage stabilization on each phase (via digital voltmeter or network analyzer), apply the load, and verify steady output voltage regulation. Ensure output current does not exceed the rated value.
- Instrumentation: Single-phase units ≤ 15kVA use a fixed multi-function display. Single-phase units > 15kVA and three-phase units use a digital multimeter for voltage, current, powers, etc.
- Protections:
- Limit Switches: Stop motor rotation when regulation limits are reached.
- Motor Supply: Protection against short-circuit on the motor.
- Max/Min Line Voltage: Alarms (set to ±6% of rated output voltage) activate a contact for a soft-start contactor, which can disconnect the load if voltage is outside range and reconnect when stable within ±3%.
- Card Thermostat: Controls internal temperature, generates an alarm at 65°C (with 5°C hysteresis).
- Roof Fans (3-ph. units from 60kVA): Activated via adjustable thermostat (default 35°C).
- Automatic Circuit Breaker: Protects voltage regulator against overload and short-circuit. Does not interrupt the main line.
- Fuses: Auxiliary circuit protection.
- Re-settable Fuse: Electronic board protection.
- Output Circuit Breaker: Protects against overload and short-circuit (only for units without buck/boost transformer).
- Buzzer: Signals internal protection interventions (can be disabled via JP3 jumper).
- Optional Accessories: Input isolating transformer, manual bypass, Class I/II SPDs (surge protection devices), over/undervoltage protection, input/output automatic circuit breakers with magnetic and thermal release, EMI/RFI filter, phase-failure/sequence protection, frequency protection.
Maintenance Features:
- General: Clean all components with dry compressed air. Do not use lubricants on voltage regulator moving contacts.
- Voltage Regulator: Check integrity and smoothness. Clean surface with fine sandpaper if necessary, then with dry compressed air and a dry cloth. Avoid excessive force to prevent damage.
- Regulator Rollers: Check for damage (broken, chipped, scratched, irregular consumption). Rollers must rotate freely and smoothly. Replace worn or damaged rollers by loosening fixing screws, detaching the support, and assembling new ones.
- Fans (if applicable): Check regular functioning by verifying airflow from outlets. Locate and replace damaged fans if malfunction or alarm occurs.
- Fixtures and Connections: Check tightness of mechanical fixtures, transmission components, and all electrical connections.
- Belt Tension (if applicable): Check that the transmission belt is neither too tight nor too loose. Adjust tension by loosening screws on the motor supporting plate and moving the plate.
- Maintenance Frequency: Regular maintenance is recommended every 12-24 months, but may need to be increased in abnormal or aggressive environments.
- Safety Precautions: All maintenance and repair routines must be performed by trained and qualified personnel after disconnecting the unit from the mains and locking the upstream general breaker. Always use suitable tools and PPE. Do not operate on an energized unit unless specifically required for testing, in which case the area must be segregated.
- Troubleshooting: The manual provides a detailed table of possible causes and remedies for common anomalies such as no output voltage, no display indications, malfunctioning auxiliary transformer, incorrect signal, and absence of regulation.
- Spare Parts: For any queries or spare parts requests, contact the nearest authorized Service facility or the Manufacturer's Service Dept., providing unit type, factory code, serial number, and purchasing order/invoice number.
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