What is a PCORE Quick Link bushing?

The PCORE quick-link bushing is a patented design to assist electric utilities and power transformer manufacturers when they are faced with having to use a bottom connected bushing to carry higher application currents of 1200A or more with the convenience of a draw-lead bushing. The use of a quick-link bushing allows for a simpler and quicker installation and removal of a bushing just like a draw-lead bushing. For new applications, this would allow the transformer to be shipped with the connection in place, which saves thousands of dollars in field service work.

The PCORE quick link bushing has a unique design that transfers the current from the bottom terminal to the bushing giving the unit the same current-carrying capability as in a bottom-connected bushing. The bottom connector is a proven multiple contact design that provides safe, reliable operation even after 500 times of connect and disconnect operations. During short circuit, the design can carry up to 25 times the rated current (up to 100 kA).

The PCORE quick-link bushing has a one-piece conductor that carries the current and a lightweight, two-piece quick-link rod that makes installation and removal easy. Practically there is no current flowing through the internal rod which eliminates any issues such as loose or overheat that is associated with some other designs in the market the rely on the internal rod to carry the current.

The quick-link bushing is available from 25kV-69kV (1200A & 2000A) in both PRC and POC types. The quick-link is also available at 115kV (1200A & 2000A) & 138kV (1200A) in POC technology.


  1. Where is PCORE Electric, Inc. located?
  2. How long has PCORE been manufacturing bushings?
  3. Is PCORE Electric an ISO Certified Company?
  4. What is PCORE’s product offering?
  5. What standards does PCORE manufacture it’s bushings to?
  6. What is a PCORE POC bushing?
  7. What is a PCORE PRC bushing?
  8. What is an Oil Free PRC bushing?
  9. What is a PCORE Quick Link bushing?
  10. What is a PCORE Test Terminal?
  11. What different designs of the test terminal are available?
  12. What are the current limits for draw-lead connected bushings?
  13. What elevation are PCORE bushings rated for?
  14. Are PCORE bushings Transformer / Breaker Interchangeable (TBI)?
  15. Are PCORE bushings seismically rated?
  16. Does PCORE supply the gasket / o-ring for use between the bushing & equipment?
  17. What are benefits of PCORE’s bushing technologies?
  18. What tests does PCORE recommend be performed on a bushing in the field?
  19. How often should PCORE bushings be tested?
  20. What are the average power factor limits on PRC & POC bushings?
  21. Should power factor correction factors be used with PCORE bushings?
  22. When should you be concerned with power factor and capacitance test results of a PCORE bushing?
  23. What should the oil level be in the sight glass of a PCORE bushing?
  24. What can be done in the field to eliminate testing issues / abnormalities?
  25. What are the recommended testing modes?
  26. What information do I need to provide when replacing a bushing?
  27. What bushings are candidates for repair?
  28. What is the PCB level that is acceptable to ship a bushing to PCORE?
  29. How should a PRC bushing be stored?
  30. How should a low voltage (15kV – 69kV) POC bushings be stored?
  31. How should a high voltage (115kV-230kV) POC bushings be stored?
  32. How should an EHV (345kV -500KV) POC bushings be stored?

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