Pre-Parallel Inspection (PPI)

Location: CA

Year: 2025

Project Overview

Generator Pre-Parallel Inspection (PPI) protection testing with PG&E, relay settings review, developed detailed test plans, breaker and LOR operations, and performed on-site testing using an Omicron CMC 356 test set for two SEL-700G relays. Our efforts ensured full compliance with PG&E Rule 21 requirements.

  • SEL-700G Relay

Protection Elements Tested:

  • Metering Check
  • Voltage controlled phase time-overcurrent element (51CT)
  • Phase Under/Overvoltage Elements
  • Over/Under Frequency Element

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