Power Transformer, Isolation

Espey Mfg. developed and manufactures this transformer for a ground mobile radar application.

Electrical Specifications

• Rating: 30kVA AT 30°C
• Input:
  Primary Winding: Delta Connection (H1, H2, H3)
  Frequency: 50/60HZ (± 5%)
  Impedance: 5.0% PU MAX AT 60HZ
  Efficiency: .95MIN AT RATED kVA, Load Power Factor of .80 Lagging
  Dielectric Withstand Voltage: 4000VRMS, 60HZ, 1 Minute
• Output:
  Secondary Winding: Wye Connection
  Voltage: 208V/120V (+4/-4%) at Full Load 83A (30kVA), .85
  Dielectric Withstand Voltage: 2500VRMS, 60HZ, 1 Minute
• Isulation System: 220°C
• Audible Sound Level: 45dB Maximum at Rated Voltage and Frequency With No-Load
• Altitude: Up to 15,000 feet
• Temperature Rise: 130ºC

Mechanical Specifications

• Unit Weight: 365 LBS
• Enclosure: Ventilated, Carbon Steel, Painted per MIL-E-917
• Cooling: Natural convection

Features

• 220°C Insulation System
• Circuit Breaker Protected Outputs
• Output Voltage Snubber on 208/120V (X1, X2, X3) Output

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