The Square D 75T3H is a 75 kVA three-phase dry-type transformer, commonly used for industrial and commercial applications. Here’s a breakdown of its features and specifications:
Key Features:
- Manufacturer: Square D (Schneider Electric)
- Model: 75T3H
- Type: Ventilated Dry-Type Transformer
- Power Rating: 75 kVA (kilovolt-amperes)
- Phase: Three-phase
- Frequency: 60 Hz
Electrical Specifications:
- Primary Voltage: 480 V
- Secondary Voltage: 208Y/120 V
- “208Y/120” indicates a wye-connected secondary output, providing 208 V phase-to-phase and 120 V phase-to-neutral.
- Insulation Class: Typically Class H (verify for specific model)
- Temperature Rise: Commonly 150°C or 220°C rise, depending on insulation class
- Efficiency: Meets or exceeds NEMA TP-1 or DOE 2016 efficiency standards (depending on year of manufacture)
Physical and Environmental Details:
- Cooling Method: Air-cooled (natural convection)
- Enclosure Rating: Typically NEMA 2 for indoor use (NEMA 3R available for outdoor applications)
- Mounting Options: Floor or wall-mounted (verify space and load requirements)
Applications:
- Voltage Conversion: Ideal for converting 480V primary supply to a 208Y/120V secondary for powering mixed loads like lighting, HVAC systems, and machinery.
- Commercial and Industrial Use: Common in offices, factories, warehouses, and data centers.
- Safety and Reliability: Provides isolation, protects against surges, and supports balanced loads.
Advantages:
- Durability: Minimal maintenance due to no moving parts.
- Safety: Reduced noise and high electrical isolation.
- Eco-Friendly: Complies with modern energy standards for reduced losses.
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