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IEEE C62.72 2007

IEEE C62.72 2007

$58.50

IEEE Guide for the Application of Surge Protective Devices for Low Voltage (1000 Volts or Less) AC Power Circuits

Published By Publication Date Number of Pages
IEEE 2007 63
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New IEEE Standard – Active. Information is provided to specifiers and users of surge-protective devices (SPDs) about the application considerations of SPDs associated with power distribution systems within North America. This guide applies to SPDs to be connected to the load side of the service entrance main over current protective device of 50 Hz or 60 Hz ac power circuits rated at 1001000 V rms. The effects and side effects on the presence and operation of SPDs in low-voltage power distribution systems are described. The coordination of multiple SPDs on the same circuit is described.

PDF Catalog

PDF Pages PDF Title
3 IEEE Guide for the Application of Surge-Protective Devices for Low-Voltage (1000 V or Less) AC Power Circuits
6 Introduction
Notice to users
Errata
7 Interpretations
Patents
Participants
10 CONTENTS
13 1. Overview
1.1 Scope
14 1.2 Purpose
2. Normative references
3. Definitions
15 4. Beginning the surge-protective device selection
5. Surge origins
5.1 Lightning
16 5.2 Switching
6. Effects of surges
6.1 No observed change
17 6.2 Upset
6.3 Damage
6.4 Consequential damage
7. Number and magnitude of surge events
18 7.1 General
7.2 Environmental factors
7.3 Changes in the power distribution system
19 7.4 Rate of occurrence (versus) current level
20 7.5 Exposure levels
21 8. Location categories
22 9. Power distribution systems
25 9.1 System configuration
27 9.2 System arrangement or distribution
9.3 Common North American voltages
9.4 Available short-circuit current and surge-protective device short-circuit current rating
30 9.5 Voltage ratings of surge-protective devices
10. Grounded and ungrounded systems
10.1 Grounded systems
31 10.2 Impedance grounded systems
10.3 Ungrounded systems
32 10.4 Ferroresonance
34 11. Grounding and bonding
11.1 Bonding
35 11.2 Grounding
37 12. Modes of operation
12.1 Considerations for neutral-to-ground surge-protective device application
38 13. Surge-protective device specifications
13.1 Measured limiting voltage
39 13.2 Product response time
13.3 Surge current ratings
40 13.4 Labeling
41 13.5 Joule ratings
14. Surge-protective device lifetime
42 14.1 Overvoltage failures of surge-protective devices
15. Interactions of surge-protective device operations in a power distribution system
15.1 Interactions with ground-fault protection systems
43 15.2 Interaction of surge-protective device operation on other protective relaying systems
15.3 Interaction of surge-protective device operation on other protective devices
16. Surge-protective device coordination
44 16.1 Waveshapes and durations
45 16.2 Lead length
16.3 Distance between the origin of a surge and the end-use equipment
16.4 Voltage-limiting surge-protective devices
46 16.5 Surge current capacity of the surge-protective devices
16.6 Grounding of surge-protective devices
16.7 Modes of protection
16.8 Power distribution system configuration
47 16.9 Surge-protective devices within end-use equipment
16.10 Coordination methodologies
48 17. Summary
49 Annex A (informative) Bibliography
52 Annex B (informative) Glossary
53 Annex C (informative) IEC earthing (grounding) practices
60 Annex D (informative) Methods of transient mitigation

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IEEE C62.72 2007
$58.50