Standard
Audio Frequency Track Circuit Inspection and Maintenance
Abstract
This Standard offers requirements necessary to assure the safety and reliability of audio frequency track circuit systems.
Document History
| Document Number | Version | Publication Date | Publication | Related Information |
|---|---|---|---|---|
| APTA RT-SC-S-009-03 | Rev. 1 | 12/31/2014 | Published | Current |
Keywords
AF track circuit, audio frequency track circuit, HF track circuit, bond, impedance bond, signal, shunt, shunting device, track circuit
Summary
This standard provides Audio Frequency Track Circuit tests that verify train detection (shunting), and continued proper operation. These tests include recording the measured values for comparison over time to predict possible equipment deterioration. This standard also provides track circuit inspection requirements.
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