IEEE C62.11-2020

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IEEE Standard for Metal-Oxide Surge Arresters for AC Power Circuits (>1 kV)

Published By	Publication Date	Number of Pages
IEEE	2020

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Description

Revision Standard – Active. Metal-oxide surge arresters (MOSAs) designed to repeatedly limit the voltage surges on 48 Hz to 62 Hz power circuits (>1000 V) by passing surge discharge current and automatically limiting the flow of system power current are addressed in this standard. This standard applies to devices for separate mounting and to devices supplied integrally with other equipment. The tests demonstrate that an arrester is able to survive the rigors of reasonable environmental conditions and system phenomena while protecting equipment and/or the system from damaging overvoltages caused by lightning, switching, and other undesirable surges.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std C62.11™-2020 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
8	Participants
10	Introduction
13	Contents
15	1. Overview 1.1 Scope 1.2 Purpose 2. Normative references
16	3. Definitions, acronyms, and abbreviations 3.1 Definitions
22	3.2 Acronyms and abbreviations
23	4. Service conditions 4.1 Usual service conditions
24	4.2 Unusual service conditions
25	5. Standard MCOV rating of an arrester and previously used duty-cycle rating
26	6. Performance characteristics and tests
28	7. Test requirements 7.1 Complete arrester test samples 7.2 Prorated section
31	7.3 Test measurements
32	7.4 Impulse test-wave tolerances 7.5 Power-frequency test voltages 8. Design tests 8.1 Arrester insulation withstand test
36	8.2 Discharge-voltage characteristics test
38	8.3 Power-frequency sparkover test for arresters equipped with gaps 8.4 Impulse protective level voltage-time characteristic test for arresters equipped with gaps
41	8.5 Accelerated aging test of metal-oxide disks
42	8.6 Accelerated aging test of polymer-housed distribution arresters with exposure to light and electrical stress
44	8.7 Accelerated aging test of polymer-housed arresters with exposure to salt fog
46	8.8 Contamination test
48	8.9 Distribution arrester seal integrity design test
49	8.10 Radio-influence voltage (RIV) test
50	8.11 Switching impulse energy rating test (Wth)
52	8.12 Single-impulse charge transfer rating test (Qrs)
54	8.13 Operating duty test for distribution arresters (Qth)
57	8.14 Temporary overvoltage (TOV) test
60	8.15 Short-circuit test
70	8.16 Failure mode test for liquid-immersed arresters
72	8.17 Deadfront arrester failure mode test
73	8.18 Distribution arrester disconnector test
75	8.19 Maximum Design Cantilever Load (MDCL) and moisture ingress test for polymer-housed arresters
80	8.20 Ultimate mechanical strength-static (UMS-static) test for porcelain-housed arresters 8.21 Seismic capability verification 9. Construction 9.1 Identification data
81	9.2 Standard mountings 9.3 Iron and steel parts 9.4 Terminal connections
82	10. Protective characteristics 11. Routine tests 11.1 General 11.2 Current sharing test
83	11.3 Discharge-voltage test 11.4 Partial Discharge (PD) test 11.5 Seal test 11.6 Power-frequency test
84	11.7 Power-frequency sparkover
85	Annex A (informative) Example use of procedure of 8.2 Discharge voltage characteristics test A.1 Determination of normalized lightning impulse discharge voltages (see 8.2.2.1)
86	A.2 Determination of normalized switching impulse discharge voltages (see 8.2.2.2)
87	A.3 Determination of normalized FOW discharge voltage (see 8.2.2.3)
88	A.4 Evaluation
90	Annex B (informative) Basis for accelerated aging procedure
92	Annex C (informative) Surge arrester classification and performance requirements
93	Annex D (informative) Rationale for tests prescribed by IEEE Std C62.11–2020 Purpose of this annex D.8.1 Arrester insulation withstand test
95	D.8.1.2.1 Distribution arresters used in open air
97	D.8.2 Discharge-voltage characteristics test
100	D.8.3 Power-frequency sparkover test D.8.4 Impulse protective level voltage-time characteristic test
101	D.8.5 Accelerated aging test of metal-oxide disks
102	D.8.6 Accelerated aging test of polymer-housed distribution arresters with exposure to light and electrical stress
103	D.8.7 Accelerated aging test of polymer-housed arresters with exposure to salt fog D.8.8 Contamination tests
104	D.8.9 Distribution arrester seal integrity design test
106	D.8.10 Radio-influence voltage (RIV) D.8.11 Switching impulse energy rating test (Wth)
108	D.8.12 Single-impulse charge transfer rating test (Qrs)
109	D.8.13 Operating duty test for distribution arresters (Qth)
111	D.8.14 Temporary overvoltage (TOV) test
113	D.8.15 Short circuit test
115	D.8.16 Failure mode test for liquid-immersed arresters D.8.17 Deadfront arrester failure mode test
116	D.8.18 Distribution arrester disconnector test D.8.19 Maximum design cantilever load (MDCL) and moisture ingress test for polymer-housed arresters
117	D.8.20 Ultimate mechanical strength-static (UMS-static) test for porcelain-housed arresters
118	D.8.21 Seismic capability verification D.12 Routine tests
120	Annex E (informative) Bibliography
121	Back cover