One-line Display Standards
PPL Electric Utilities requires the following included in the customer one-line drawing, where applicable:
- Lightning Arrestors (LA's)
- Primary equipment on the Transformer (example: CB's, disconnects, circuit switches)
- Potential Transformers (PT's) and Current Transformers (CT’s)
- Customer Transformer data (kVA for 12kV Rating or MVA for 69kV, Delta-Wye or Wye Delta transformer winding configuration)
- Customer Secondary equipment on the Transformer (example: CB's, Disconnects)
- If applicable: the TIE between two sections, Customer Secondary Bus (TIE CB, and disconnects)
- Customer Emergency Generation and/or Distributed Generation/Renewable
- If applicable: tie on PPL EU’s 12kV Distribution System or PPL EU’s 69kV Transmission System (Alternate Supply).
- What the customer designations are for all the devices as mentioned above. (Example Trans 1, Tap 1 AB, 52-4 CB, Sect 1 Bus etc.)
- If there are any key interlocks with CBs or air breaks.