Hot Sale 3-phase 480 D - 480 Y 277 (drive Isolation Transformer) Now 40% Cheaper [V93cmnrB]

3-Phase Drive Isolation Transformers

Maddox Drive-Isolation Transformers are engineered to meet the demanding needs of AC and DC variable speed drives, ensuring the necessary voltage change for optimal performance. These transformers offer electrical isolation between the incoming power and the SCR or VFD load, protecting your system from potential damage. With their robust design, they can withstand overcurrent conditions, including 150% of the rated load for 60 seconds or 200% for 30 seconds, and minor harmonic noise at or below K-Factor 4. The standard duty cycle is one start every two hours, making them reliable for continuous use.

Transformer Specifications and Benefits

Our Drive Isolation Transformers are CSA and UL approved, ensuring compliance with industry standards. They operate at a 60 Hz frequency and have a temperature rise of 150°C, with an insulation class of 220°C. The primary voltage is 480 Delta, while the secondary voltage is 480 Y 277. Key features include primary adjustment taps for precise voltage control, vacuum pressure impregnated windings for enhanced durability, and an electrostatic shield between high-voltage and low-voltage windings to protect against interference. With a K4 rating, these transformers are designed to handle the toughest applications. Additionally, lugs are included up to 75 kVA, simplifying installation and maintenance.

Size Guide and Practical Uses

We offer a range of sizes from 5 to 600 HP in six standard voltages to accommodate various motor horsepower and voltage ratings. Our size guide provides detailed information on amps at 480, startup (low) and startup (high) amps, ensuring you select the right transformer for your specific application. With a kVA sizing recommendation of at least 20% above the rated horsepower on the motor, these transformers are designed to provide ample power and protection. Whether you're using them in industrial settings, commercial buildings, or any other application requiring variable speed drives, Maddox Drive-Isolation Transformers are the reliable choice for your power needs.