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IEEE C37.012a-2020

IEEE C37.012a-2020

$33.58

IEEE Guide for the Application of Capacitance Current Switching for AC High-Voltage Circuit Breakers Above 1000 V Amendment 1

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IEEE 2020
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Amendment Standard – Active. Covered in this amendment are changes in di/dt limitations for non-oil circuit breakers. A section has been added describing possible delayed current zeros when doing a rapid close—open of a line circuit breaker (CO) when shunt reactors are connected to a line or cable. Some minor errors have been corrected and references have been updated.

PDF Catalog

PDF Pages PDF Title
1 IEEE Std C37.012a-2020 Front cover
2 Title page
3 Important Notices and Disclaimers Concerning IEEE Standards Documents
10 Introduction
11 Contents
12 2. Normative references
13 4. Capacitor bank switching
4.3 Energizing capacitor banks
14 5. Unloaded cable switching
5.2 De-energizing unloaded cables
5.3 Energizing unloaded cables
6. Switching of no-load transmission lines
6.1 De-energizing uncompensated transmission lines
15 6.4 Switching the charging current of long transmission lines
6.5 Switching of reactor compensated lines and cables
7. Voltage factors for capacitive current switching tests
8. General application considerations
9. Capacitance current switching application considerations
9.1 General
16 9.4 Rated capacitive current
9.5 Voltage and grounding conditions of the network
9.6 Restrike probability
17 9.7 Class of circuit breaker
18 9.10 No-load transmission lines
19 9.11 Capacitor banks
24 9.12 Insulated cables
25 9.14 Unusual circuits
26 10. Considerations of capacitive currents and recovery voltages under fault conditions
10.1 Voltage and current factors
10.4 Switching transmission lines under faulted conditions
10.5 Switching capacitor banks under faulted conditions
27 10.7 Examples of application alternatives
28 Annex A (informative) Bibliography
29 Back cover

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