Brook Crompton 12-Lead Wye-Delta Motor Wiring Diagram (NEMA)
This document provides a clear wiring reference for Brook Crompton 12-lead, three-phase motors configured for Wye start and Delta run operation in accordance with NEMA standards. The diagram illustrates proper lead connections for both low-voltage and high-voltage start and run conditions, helping electricians, technicians, and engineers ensure correct motor installation, startup, and operation.
Key Points
- Covers 12-lead, three-phase Brook Crompton motors wired per NEMA conventions
- Shows Wye start / Delta run configurations for reduced inrush current
- Includes low-voltage and high-voltage run connection diagrams
- Includes low-voltage and high-voltage start connection diagrams
- Clearly identifies T1–T12 motor lead groupings for each configuration
- Useful for installation, troubleshooting, and field reference during motor startup