What is the difference between a PCORE PRC Bushing and a PCORE POC Bushing?
A PCORE POC Bushing is a capacitance graded bushing for transformer and oil circuit breaker applications with a proven design based on a capacitor core with aluminum foils and high dielectric paper impregnated with dried, degassed oil. POC Bushings are available starting at 25kV 400Amps through 500kV 3000Amps. The C1 power factor reading for a POC bushing should be .5 and below. ยป 25kV-500kV POC Bushings A PCORE PRC Bushing is a capacitance graded bushing for transformer and oil circuit breaker applications with a proven design based on a capacitor core with aluminum foils and high dielectric paper impregnated with high dielectric epoxy resin. PRC bushings are available from 15kV through 69kV and from 400Amps through 2000Amps. The C1 power factor reading for a PRC bushing should be .85 and below.
