Power Transformers

 
Range: 5000 to 30,000 kVA, 60 Hz, (50 Hz consult factory)
Temperature Rise: 55°C, 65°C, 55/65°C, or as specified (75°C, consult factory)
Primary: 5 kV to 138 kV (550 kV BIL)
Secondary: Up to 69 kV
Winding Material: Copper or Aluminum
Winding Types: Circular Disk/Helical
Core Types: Mitered Step Lap (Cruciform) Stacked
Fluids: Mineral Oil (Type II), Silicone, Envirotemp FR3, Luminol, Alpha 1

Design/Application

  • Power
  • Distribution
  • Excitation
  • Generator Step-Up
  • Multi-Voltage Configurations
  • Mobile/Skid-Mounted Operation
  • Dedicated Load/Motor-Starting
  • Captive Duty
  • Class 1 Div II/Marine/Corrosive Environments
  • High Altitude
  • Seismic Conditions and Anchoring
  • Rectifier/Drives (IEEE C57.18.10)
  • Retrofit Replacement
  • Extra Heavy Duty (Traction Duty)

Standard Features

  • Magnetic Liquid Level Gauge (ANSI 71)
  • Oil Temperature Gauge (ANSI 26)
  • Pressure/Vacuum Gauge
  • No-Load Tap Changer (when required)
  • Pressure Test and Upper Filter Press (1” connection)
  • Corrosion Resistant Nameplate
  • Provisions for Jacking and Lifting
  • Base Suitable for Rolling or Skidding
  • Drain and Sampler Valve

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Optional Features

  • Contacts on Standard Gauges
  • Pressure Relief Device (standard over 3 MVA)
  • Sudden Pressure Rise Relay (ANSI 63)
  • Seal in Relay (ANSI 63X)
  • Winding Temperature Gauge (ANSI 49)
  • Forced Air Cooling
  • Lightning Arresters
  • Load Tap Changer
  • Stainless Steel Construction
  • Neutral Grounding Resistor
  • Digital Transformer Monitor
  • Positive Pressure System (N2)
  • Conservator
  • Rigid & Flexible Conduit
  • Explosion Proof Cabinet
  • Non-Standard Impedances
  • High Resistance Grounding