Description
FULL PRODUCT FEATURES
• Tri-Phase + Neutral System – Designed for balanced and stable three-phase electrical loads
• Capacity: 15KVA – Suitable for medium to heavy industrial and commercial applications
• Wide Input Voltage Range: 277V – 430V – Handles severe voltage fluctuations effectively
• Stable Output Voltage: 380V – Ensures safe and consistent power delivery
• Frequency Range: 50–60Hz – Compatible with standard three-phase power systems
• Phase Voltage: 220VAC per phase – Even power distribution across all phases
• Built-In By-Pass Switch – Allows direct mains supply during maintenance or emergency operation
• Circuit Breaker Protection: 25A MCB – Protects against overload and short circuits
• Pure Copper Winding – Delivers high efficiency, durability, and true output power
• Magnetic Contactor Safety System – Provides reliable switching and enhanced equipment protection
• Automatic Time Delay Function:
– Long Delay: 2–5 minutes (for motor and compressor-based equipment)
– Short Delay: 2–5 seconds (for general electrical loads)
• Heavy-Duty Industrial Cabinet – Built for continuous, long-term operation in demanding environments
GENERAL DESCRIPTION
The STAVOL ST3-B-15,000VA Triphase Automatic Voltage Regulator is a heavy-duty voltage stabilization solution designed to protect three-phase electrical systems from unstable power conditions. With its wide input voltage tolerance, pure copper windings, and integrated by-pass function, this AVR ensures continuous and stable 380V output for critical equipment.
Equipped with a magnetic contactor and MCB protection, it provides advanced electrical safety, while the automatic delay function prevents damage during power restoration. Its rugged enclosure and industrial-grade components make it a reliable choice for professional environments.
APPLICATIONS
Ideal for stabilizing power in:
• Industrial machinery and production equipment
• CNC machines and fabrication tools
• Elevators and escalators
• Commercial buildings and offices
• Hospitals and medical facilities
• Data centers and server rooms
• Cold storage and refrigeration systems
• Large three-phase air-conditioning units
• Factories, warehouses, and workshops
PHYSICAL SPECIFICATIONS
• Dimensions: 55 × 50 × 89 cm
• Net Weight: 75 kg
• Gross Weight: 86 kg







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