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IEEE C62.42.2-2022

IEEE C62.42.2-2022

$46.04

IEEE Guide for the Application of Surge-Protective Components in Surge-Protective Devices and Equipment Ports–Part 2: Metal- Oxide Varistors (MOVs)

Published By Publication Date Number of Pages
IEEE 2022 60
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New IEEE Standard – Active. Surge protective components (SPCs) used in power and telecom surge-protective devices (SPDs) and equipment ports are covered by the C62.42 guide series. Component construction, characteristics, ratings, and application examples are covered in this part on metal-oxide varistor (MOV) technology SPCs.

PDF Catalog

PDF Pages PDF Title
1 IEEE Std C62.42.2™-2022 Front cover
2 Title page
4 Important Notices and Disclaimers Concerning IEEE Standards Documents
8 Participants
9 Introduction
10 Contents
11 List of Figures
13 List of Tables
14 1. Overview
1.1 Scope
1.2 Word usage
15 2. Normative references
3. Definitions, acronyms, and abbreviations
3.1 Definitions
19 3.2 Acronyms and abbreviations
20 3.3 Schematic symbols
4. Component construction
4.1 Description
21 4.2 Mechanical
5. General
5.1 Theory of operation
23 5.2 Detailed specification
5.3 Category temperatures
24 6. Characteristics
6.1 Clamping voltage (VC)
26 6.2 Leakage current (dc) (ILd)
27 6.3 Nominal varistor voltage (VN)
6.4 Capacitance (C)
28 6.5 Front peak voltage (VF)
29 7. Ratings
7.1 Rated peak single pulse transient current (ITM)
30 7.2 Nominal discharge current (In)
7.3 Current peak derating curve
7.4 Maximum continuous operating voltage (MCOV) (ac or dc)
31 7.5 Rated impulse energy (EM)
32 7.6 Rated average dissipation power (PM)
33 7.7 Electrostatic discharge (for SMD-type MOV only)
34 7.8 Isolation voltage (VISO)
35 8. Design Examples
8.1 AC mains
38 8.2 Circuit Configurations
41 Annex A (informative) Bibliography
44 Annex B (normative) Thermally protected MOV application examples
B.1 Introduction
B.2 Operation
45 B.3 Example circuits
47 Annex C (normative) Curve fitting MOV VI characteristics
C.1 Introduction
C.2 Gathering data
49 C.3 Data analysis
50 C.4 Point resistance-current relationship
51 C.5 MOV clamping voltage test current
52 C.6 Rated mains transient 8/20 current
C.7 Using the MOV equation in a simulation program with integrated circuit emphasis (SPICE)
53 C.8 Summary
54 Annex D (normative) Modeling parallel MOVs
D.1 Introduction
D.2 Simulation circuit
D.3 Results
56 D.4 Summary
57 Annex E (informative) C62.42™-2005 materials
E.1 Introduction
E.2 AC standby power (see 6.2)
58 E.3 Lifetime rated pulse current tests (see 7.3)
E.4 Voltage overshoot (Vos) (see 6.5)
60 Back cover

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IEEE C62.42.2-2022
$46.04