IEEE C37.012 2005

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IEEE Application Guide for Capacitance Current Switching for AC High-Voltage Circuit Breakers

Published By	Publication Date	Number of Pages
IEEE	2005	62

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Description

Revision Standard – Active. Guidance for the application of ac high-voltage circuit breakers for capacitance current switching is provided. The document addresses the general theory of capacitance current switching, the notion of restrike, reignition, NSDD and voltage factors are explained. Application of circuit breakers for different network conditions and different capacitive loads (lines, cables, capacitor and filter banks) is treated.

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PDF Pages	PDF Title
1	IEEE C37.012-2005 Front Cover
3	IEEE Application Guide for Capacitance Current Switching for AC High-Voltage Circuit Breakers
5	Introduction Notice to users Errata Interpretations Patents Participants
7	Contents
9	Figures
10	Tables
11	IEEE Application Guide for Capacitance Current Switching for AC High-Voltage Circuit Breakers 1. Overview 1.1 Scope 1.2 Purpose 2. Normative references
12	3. General
13	4. General theory of capacitive current switching 4.1 De-energization of capacitive loads 4.1.1 Capacitor banks
16	4.1.2 No-load cables
18	4.1.3 No-load overhead lines
21	4.1.4 Voltage factors for capacitive current switching tests
23	4.2 Energization of capacitive loads
24	4.2.1 Capacitor banks
28	4.2.2 Cables
34	4.2.3 Energization and re-energization of overhead lines
36	5. General application considerations 6. Capacitance current switching application considerations 6.1 Maximum voltage for application 6.2 Frequency 6.3 Rated capacitive current 6.3.1 Overhead lines and cables
37	6.3.2 Capacitor and filter banks 6.4 Voltage and grounding conditions of the network
38	6.5 Restrike performance 6.6 Class of circuit breaker
39	6.7 Interrupting time 6.8 Transient overvoltages and overvoltage limitation 6.8.1 Overvoltages
40	6.8.2 Overvoltage limitation 6.9 No-load overhead lines 6.9.1 Line charging current
42	6.9.2 Compensated overhead lines 6.9.3 No-load line recovery voltage 6.10 Capacitor banks 6.10.1 Capacitor bank current
43	6.10.2 Methods for calculating transient inrush currents
48	6.11 Cables 6.11.1 Cable inrush current 6.11.2 Alternate configurations
49	6.12 Switching through transformers
50	6.13 Unusual circuits
51	6.13.1 Exposure to transient inrush currents 6.13.2 Exposure to total capacitor bank discharge current
53	6.13.3 Exposure to capacitive switching duties during fault switching 6.14 Effect of load 6.15 Effect of reclosing
54	6.16 Resistor thermal limitations 6.17 Application considerations for different circuit breaker types 6.17.1 Oil circuit breakers
55	6.17.2 Vacuum circuit breakers 6.17.3 Sulfur hexafluoride (SF6) circuit breakers
56	6.17.4 Air-blast circuit breakers 7. Considerations of capacitive currents and recovery voltages under fault conditions 7.1 Voltage and current factors 7.2 Reasons for these specific tests being non-mandatory in the standard
57	7.3 Contribution of a capacitor bank to a fault 7.4 Switching overhead lines under faulted conditions
58	7.5 Switching capacitor banks under faulted conditions
59	7.5.1 Reference condition 7.5.2 Fault to neutral in one phase (one capacitor bank phase short-circuited)
60	7.5.3 Fault to ground in one phase 7.5.4 Other fault cases 7.6 Switching cables under faulted conditions 7.7 Examples of application alternatives
61	Annex A (informative) Bibliography

Additional information

Standard Title	IEEE Application Guide for Capacitance Current Switching for AC High-Voltage Circuit Breakers
Published Code	IEEE
Publication Date	2005
Pages Count	62

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