APTA PR-E-RP-016-99
480 Vac Head End Power System
Abstract
This document defines the recommended practices for a head end power (HEP) system, including hardware component functional requirements, transmission, power distribution and load properties for use on locomotive-hauled passenger vehicles. Single bus and split bus forms are described to accommodate intercity and commuter-type operations.
Keywords: 480 Vac, head end power system, HEP, trainline, TLC, trainline complete
Summary
This recommended practice defines the functionality of the 480 Vac head end power trainline system, as well as its application to passenger cars and locomotives.
Document History
| Document Number | Version | Publication Date | Publication | Related Information |
|---|---|---|---|---|
| APTA PR-E-RP-016-99 | Rev. 2 | 05/13/2026 | Published | Current |
| APTA PR-E-RP-016-99 | Rev. 1 | 03/22/2004 | Published | Superseded |
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