Shipboard Distribution Transformers (1-75kVA)

Espey Mfg. designs and manufactures medium voltage dry-type power transformers up to 2.5MVA air-cooled, and 5MVA water-cooled. Espey transformers are used in military, heavy industrial and high reliability applications.

Electrical Specifications

• Input:
  Rated Voltage: 440 VAC, 60Hz, 3 PHASE
  (per MIL-STD-1399/300A)
  Rated Frequency: 60Hz
• Output: (21kVA NOMINAL)
  Secondary: 3050, 3100, 3150, 3200, 3250, 3300V
  Selectable off-circuit

Mechanical Specifications

• Weight: 830 lbs
• Construction: per MIL-T-15108
• Insulation Class: U, (200°C)

Features

• 21kVA, natural convection cooled.
• 450V, single (1) phase, 60Hz
• 3.15kV (+3/-2 x 50V) Output
• 2% Voltage regulation
• Fully Self Protected – (Over-Voltage, Over-Current, Over-Temperature)
• 45° drip-proof enclosure

Qualification

• MIL-S-901D Shock (Grade A)
• MIL-STD-167 Vibration (Shipboard)
• MIL-STD-740-1 and MIL-STD-740-2 (Airborne and Structure Borne Noise)
• IEEE C57.12.91-1998 Short Circuit Withstand

Click here for the PDF version.