Description
The Federal Pacific T48LH2Y-45 is a 45 kVA three-phase commercial distribution transformer designed to safely step down high voltage for building power grids.
The technical breakdown of this device covers key specifications, operating physics, and purchasing data:
Core Electrical Specifications:
This dry-type isolation transformer uses a specific wiring architecture to manage voltage conversion:
- Power Capacity: 45 kVA (Kilovolt-Amperes).
- Primary Voltage (Input): 480V Delta (Δ), drawing roughly 54 Amps at full capacity.
- Secondary Voltage (Output): 208Y/120V Wye (Y), capable of outputting roughly 125 Amps. This setup lets you run 208V machinery alongside standard 120V wall outlets.
- Frequency: 60 Hz (Standard North American power grid frequency).
- Voltage Adjustments (Taps): Features 6 adjustment taps (+2 and -4, each changing the voltage by 2.5%) to fine-tune utility line voltage variations.
Physical Construction & Design:
- Enclosure Type: NEMA 1 steel ventilated enclosure intended for standard indoor floor mounting. It can be upgraded to an outdoor NEMA 3R rating using optional weather shields.
- Winding Material: Aluminum windings are utilized rather than copper, offering a balance of lightweight design and cost efficiency.
- Insulation Class: Features a 220°C continuous insulation system built to safely handle a standard 150°C internal temperature rise.
- Physical Footprint: Stands roughly 37 inches high, 20 inches wide, 19 inches deep, and weighs approximately 455 pounds.
Operating Efficiency:
The unit meets the Department of Energy's federal compliance standard 10 CFR 431 (DOE 2016) for energy efficiency. According to the manufacturer Technical Data Sheet, it features:
- No-Load Losses: 90 Watts (the power drawn constantly just by being plugged in).
- Full-Load Losses: 1,236 Watts (total heat dissipation loss at maximum power throughput).
- Impedance: 4.2%.