The STACO 5010CT-3Y is a three-phase ganged variable autotransformer engineered for precise, continuous control of AC voltage in industrial and laboratory environments. This 24.2 kVA unit delivers smooth voltage adjustment across 0–280 V output with 50 A capacity, making it ideal for applications demanding stable, reliable voltage regulation. The transformer core uses copper windings on a toroidal core of laminated, grain-oriented silicon steel, with voltage tapping achieved through a carbon brush rotating across a precision-ground, precious metal-plated commutator track.
Technical Specifications
• Input: 240 V, 3-phase, 60 Hz (compatible with 50 Hz with derating)
• Output Voltage: 0–280 V, 3-phase (0–117% of line voltage)
• Output Current: 50 A
• Power Rating: 24.2 kVA
• Operating Frequency Range: 50 Hz to 400 Hz (with derating at higher frequencies)
• Configuration: 3-gang unit with CT-style protective housing
• Enclosure: NEMA 1 dripproof, fully front accessible
• Terminals: 1/4″ screw type
• Dimensions: 635 mm H × 908.1 mm L × 565.8 mm W
• Weight: 109.8 kg
– Key Features
• Adjustable shaft design permits back-of-panel or bench mounting
• Coil tapping provides output voltage control from 0–117% of input line voltage
• Toroidal core construction with grain-oriented silicon steel for efficient operation
• Carbon brush and precious metal-plated commutator ensure reliable voltage selection
– Typical Applications
Suitable for test facilities, production validation, power supply conditioning, and equipment commissioning where controlled three-phase voltage adjustment is required.
– Compatibility & Integration
Motor-driven versions (prefix “M”) are available with adjustable motor speeds of 5, 15, 30, and 60 seconds for remote or automatic control. Microprocessor controller integration (MP series) supports computer and process controller integration with programmable control ranges and voltage ramping modes.
