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IEEE C62.22 1998

$72.58

IEEE Guide for Application of Metal-Oxide Surge Arresters for Alternating-Current Systems

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IEEE 1998 101
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Revision Standard – Inactive – Superseded. The application of metal-oxide surge arresters to safeguard electric power equipment against the hazards of abnormally high voltage surges of various origins is covered. Step-by- step directions toward proper solutions of various applications are provided. In many cases, the prescribed steps are adequate. More complex and special solutions requiring study by experi- enced engineers are described, but specific solutions are not always given. The procedures are based on theoretical studies, test results, and experience.

PDF Catalog

PDF Pages PDF Title
1 Title page
3 Introduction
Participants
5 CONTENTS
7 1. Scope
8 2. References
9 3. Definitions and acronyms
3.1 Definitions
3.1.1 arrester: See: surge arrester.
3.1.2 arrester discharge current: The current that…
3.1.3 arrester discharge voltage: The voltage that…
3.1.4 arrester duty cycle rating: The designated m…
3.1.5 basic lightning impulse insulation level (BI…
3.1.6 basic switching impulse insulation level (BS…
3.1.7 coefficient of grounding (COG): The ratio, E…
10 3.1.8 conventional BIL: The crest value of a stand…
3.1.9 conventional BSL: The crest value of a stand…
3.1.10 conventional withstand voltage: The voltage…
3.1.11 coordination of insulation: The selection o…
3.1.12 crest value: (of an impulse) The maximum va…
3.1.13 critical flashover voltage (CFO): The ampli…
3.1.14 deadfront type arrester: An arrester assemb…
3.1.15 disruptive discharge: The sudden and large …
3.1.16 distribution arrester:
3.1.17 ferroresonance: Can also occur between the …
3.1.18 flashover: A disruptive discharge around or…
3.1.19 impulse: A surge of unidirectional polarity…
3.1.20 insulation level: A combination of voltage …
3.1.21 lightning overvoltage: The crest voltage ap…
3.1.22 lightning surge: A transient electric distu…
3.1.23 liquid-immersed type arrester: An arrester …
11 3.1.24 maximum continuous operating voltage rating…
3.1.25 metal-oxide surge arrester (MOSA): A surge …
3.1.26 nominal rate of rise (of an impulse) For a …
3.1.27 nominal system voltage: A nominal value ass…
3.1.28 nonself-restoring insulation: An insulation…
3.1.29 overvoltage: Abnormal voltage between two p…
3.1.30 peak value: See crest value.
3.1.31 riser pole type arrester: An arrester for p…
3.1.32 self-restoring insulation: Insulation that …
3.1.33 series gap: An intentional gap(s) between s…
3.1.34 standard lightning impulse: The wave shape …
3.1.35 standard switching impulses: The wave shape…
a) For air insulation and switchgear: 250/2500 ms
b) For transformer products: 100/1000 ms
c) For arrester sparkover tests:
1) 30ā€“60/90ā€“180 ms
2) 50ā€“300/400ā€“900 ms
3) 1000ā€“2000/3000ā€“6000 ms (The tail duration is no…
3.1.36 statistical BIL: The crest values of a stan…
3.1.37 statistical BSL: The crest value of a stand…
3.1.38 statistical withstand voltage: The voltage …
12 3.1.39 surge: A transient wave of current, potenti…
3.1.40 surge arrester: A protective device for lim…
3.1.41 switching overvoltage: Any combination of s…
3.1.42 switching surge: A heavily damped transient…
3.1.43 system voltage: The root-mean-square (rms) …
3.1.44 temporary overvoltage: An oscillatory overv…
3.1.45 traveling wave: The resulting wave when an …
3.1.46 unit operation: Discharge of a surge throug…
3.1.47 valve arrester: An arrester that includes o…
3.1.48 valve element: A resistor that, because of …
3.1.49 virtual duration of wave front: (of an impu…
a) For voltage waves with wave front durations les…
b) For voltage waves with wave front durations of …
c) For current waves, 1.25 times the time for the …
3.1.50 virtual zero point: (of an impulse) The int…
3.1.51 wave front: (of an impulse) That part of an…
3.1.52 wave shape: (of an impulse test wave) The g…
3.1.53 wave shape designation: (of an impulse)
a) The wave shape of an impulse (other than rectan…
13 b) The wave shape of a rectangular impulse of curr…
3.1.54 wave tail: (of an impulse) That part betwee…
3.1.55 withstand voltage: The voltage that an insu…
4. General considerations
4.1 Overvoltages
14 4.2 Metal-oxide arresters
18 4.3 Protective levels
19 4.4 Insulation withstand
4.5 Separation effects
20 4.6 Insulation coordination
5. Protection of transmission systems
5.1 Introduction
21 5.2 Step-by-step procedures
23 5.3 Arrester selection
28 5.4 Protective levels of arrester (Figure 4, Item 2)
32 5.5 Locating arresters and determining voltage at protected equipment (Figure 4, Item 3)
35 5.6 Determining insulation strength (Figure 4, Item 5)
36 5.7 Evaluating insulation coordination (Figure 4, Item 6)
39 5.8 Evaluation of alternatives (Figure 4, Item 7)
5.9 Protection of transformers
40 5.10 Protection of dry-type insulation
5.11 Protection of shunt capacitor banks
42 5.12 Protection of underground cables (Witzke and Bliss)
43 5.13 Protection of gas-insulated substations (GIS)
44 5.14 Protection of rotating machines
5.15 Protection of power line insulation
45 5.16 Protection of series capacitor banks
46 5.17 Protection of circuit breakersā€”TRV control
6. Protection of distribution systems
6.1 Introduction
49 6.2 General procedure
50 6.3 Selection of arrester ratings
54 6.4 Distribution system overvoltages
59 6.5 Insulation coordination
6.6 Protection of distribution lines
60 6.7 Arrester connections
64 6.8 Special applications
70 6.9 Isolation
71 Annex Aā€”Lightning flashes, lightning stroke currents, traveling waves, and station shielding
75 Annex Bā€”COG for various conditions
79 Annex Cā€”Calculations of surge arrester separation distances
88 Annex Dā€”Bibliography
96 Annex Eā€”Distribution system overvoltage line diagrams
98 Annex Fā€”Dual transformer station
99 Annex Gā€”Modeling of gapless metal-oxide surge arresters
IEEE C62.22 1998
$72.58