Grounding Transformer
Specially engineered to provide fault detecting and voltage control in deltaconnected systems like wind farm medium-voltage networks:
• Provide low impedance ground path by maintaining the neutral at or near
ground potential
• Limit the magnitude of transient over-voltages when re-striking ground faults
occur
• Provide a source of ground fault current during line to ground faults
• Provide power to a secondary load, if desired
No other manufacturer has the experience and knowledge that PCT has for
this truly engineered solution. Contact your PCT representative and provide the
following information:
Available Fault Current _______________________A
Fault Duration _______________________________Seconds
Continuous Neutral Current ___________________A
Ohms Per Phase (or % Z)______________________
Configuration:
Padmount or Substation
Zig Zag or Wye/Delta
StylePadmount or Substation
Range
Sized by requirement
Temperature Rise
55°C, 65°C, 55/65°C, or as specified (75°C, consult factory)
Primary
34.5 kV or as specified
Secondary As Specified
Winding MaterialCopper
Winding Types
Circular Layer
Core Types
Mitered Step Lap (Cruciform or Rectangular) Stacked
Fluids
Mineral Oil (Type II), Silicone, Envirotemp FR3, Luminol, Alpha 1
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
• Pressure Relief Valve
Optional Features:
• Current Transformers
• Contacts on Standard Gauges
• Pressure Relief Device
• Winding Temperature Gauge (ANSI 49)
• Sudden Pressure Rise Relay (ANSI 63)
• Seal in Relay (ANSI 63X)
• Lightning Arresters
• Stainless Steel Construction
Design/Application Considerations:
• Zig Zag
• Wye/Delta