Power Transformer
Espey continues to be a primary supplier of distribution transformers for Naval applications. This 22.5kVA unit is one of a family of transformers including units between 3kVA and 75kVA power throughput. All the transformers in the family were certified through the ABS-NVR standards, specifically Part 3 Chapter 3 Section 4.
Electrical Specifications
- Input Voltage: 450VAC, 60 Hz
- Output Voltage: 208/120VAC, 60 Hz
- Duty Cycle: Continuous
- Dielectric Strength: 4000VAC, 60Hz Winding to Core and Case
- Regulation: at 0.8 PF- 3.5%; at 1.0 PF- 3%
- Exiting Current: 5% Max
- Peak Inrush Current: 575 Amps Max
Mechanical Specifications
- Mechanical Specs: Mounting Bulkhead, with Removable Eyebolts for lifting
- Weight: 260 lbs (at max)
- Insulation Class: R (220ºC), w/ 50ºC Ambient, and Over-Temp Indicator Lamp
- Temperature Rise: 140ºC
- Connections: Primary- Marathon Terminal Block P/N 39TB 03 F; Secondary- Marathon Terminal Block P/N 1423122
Features
- 22.5kVA Power Distribution Rated, Natural Convection Cooled
- Drip-proof (IP22) and Impact Shock Rated Enclosure per MIL-S-901D
- Available in Delta-Delta or Delta-Wye Configurations
Qualification
- ABS-NVR
- MIL-STD-1399/300A, Type I
- MIL-S-901D, Grade A, Class I, Type A, Unrestricted Orientation
- MIL-E-15090, Type II, Class 2
- IEEE C57.12.01-1998
- IEC 60529, IP22
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