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IEEE C37.012 1979

$42.25

IEEE Application Guide for Capacitance Current Switching for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis

Published By Publication Date Number of Pages
IEEE 1979 62
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New IEEE Standard – Inactive – Superseded. This IEEE Standards product is part of the C37 family on Switchgear, Substations and Protective Relays. AC high-voltage circuit breakers rated in accordance with ANSI/IEEE C37.04-1979, Rating Structure for AC High-Voltage Circuit Breakers, and listed in ANSI C37.06-1979, Schedules of Preferred Ratings and Related Required Capabilities for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis, are covered. Considerations for capacitance-current switching applications include maximum voltage for application, frequency, capacitance current, interrupting time, transient overvoltage, open-wire transmission lines, capacitor banks, cables, switching through transformers, unusual circuits, effect of load, effect of reclosing, resistor thermal limitations, and the current pause method. Capacitance currents and recovery voltages under fault conditions are also addressed. You will receive an email from Customer Service with the URL needed to access this publication online.

PDF Catalog

PDF Pages PDF Title
1 Title Page
3 Introduction
7 Participants
9 CONTENTS
11 1. Scope
2. Purpose
3. General Application Conditions
4. Capacitance Current Switching Application Considerations
4.1 Maximum Voltage for Application
12 4.2 Frequency
4.3 Capacitance Current
4.4 Interrupting Time
4.5 Transient Overvoltage
14 4.6 Open Wire Transmission LInes
17 4.7 Capacitor Banks
24 4.8 Cables
30 4.9 Switching Through Transformers
31 4.10 Unusual Circuits
34 4.11 Effect of Load
35 4.12 Effect of Reclosing
4.13 Resistor Thermal LImitations
4.14 Current Pause Method
36 5. Considerations of Capacitance Currents and Recovery Voltages Under Fault Conditions
5.1 Reasons for Successful Circuit Breaker Operation
5.2 Switching Open Wire Transmission LInes Under Faulted Conditions
38 5.3 Switching Capacitor Banks Under Faulted Conditions
5.4 Switching Cables Under Faulted Conditions
39 5.5 Requirements
5.6 Examples of Application Alternatives
6. Revision of American National Standards Referred to in this Document
40 7. References
48 Annex A—Example of Open Wire Transmission Current Calculation
52 Annex B—Basic Relations During Capacitance Current Switching
IEEE C37.012 1979
$42.25