IEEE C37.93 2004
$37.38
IEEE Guide for Power System Protective Relay Applications of Audio Tones Over Voice Grade Channels
| Published By | Publication Date | Number of Pages |
| IEEE | 2004 | 49 |
Revision Standard – Active. This document provides guidelines for applying audio tones over voice grade channels for power system relaying. Included are sections on transmitting and receiving equipment, leased voice grade channels, application principles, installation, and testing. The primary purpose of this document is to guide the power system user in applying, installing, and operating audio-tone protective relaying systems over voice grade channels. Secondly, it is to provide a reference for equipment manufacturers engaged in the design and application of relaying equipment and for telephone personnel engaged in providing telecommunications channels for audio-tone protective relay schemes.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Cover |
| 2 | IEEE Guide for Power System Protective Relay Applications of Audio Tones Over Voice Grade Channels |
| 4 | Introduction |
| 5 | Participants |
| 7 | Contents |
| 8 | 1. Overview 1.1 Scope 1.2 Purpose 2. References |
| 9 | 3. Transmitting and receiving equipment 3.1 Relaying requirements |
| 10 | 3.2 Basic types of audio-tone systems |
| 11 | 3.3 Power supplies 3.4 Equipment protection from surge phenomena |
| 12 | 3.5 Tone level meter 3.6 Frequency translation protection |
| 13 | 4. Voice grade channels 4.1 Introduction 4.2 Need for joint discussions |
| 14 | 4.3 Characteristics of voice grade channels |
| 24 | 4.4 Private networks |
| 25 | 5. Application principals 5.1 Audio-tone relaying systems |
| 30 | 5.2 Mode of operation 5.3 Signal and channel arrangements |
| 37 | 5.4 Signal transmission |
| 38 | 5.5 Operating time of the system |
| 39 | 5.6 Noise and noise suppression |
| 42 | 6. Installation and testing 6.1 Installation considerations |
| 43 | 6.2 Testing |
| 44 | 6.3 Periodic maintenance |
| 45 | Annex A (informative) Bibliography |
| 46 | Annex B (informative) Example of audio-tone circuit considerations |
| 48 | Annex C (informative) Signal level measurements and terms |
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