IEEE C37.30.1-2022(Redline)

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IEEE Standard Requirements for AC High-Voltage Air Switches Rated Above 1000 V (Redline)

Published By	Publication Date	Number of Pages
IEEE	2022

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Description

Revision Standard – Active. Required ratings, construction requirements, design test requirements, applications, and suggested practices for all high-voltage enclosed indoor and outdoor and non-enclosed indoor and outdoor switches rated above 1000 V are specified. This includes ratings and requirements for such switches as disconnecting, selector, horn-gap, grounding, etc., for manual and power operation, except for interrupter switches, distribution-enclosed single-pole air switches, and distribution cutouts fitted with disconnecting blades.

PDF Catalog

PDF Pages	PDF Title
1	Front Cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
8	Participants
10	Introduction
11	Contents
13	1. Overview 1.1 Scope 1.2 Word usage
14	2. Normative references
15	3. Definitions
16	4. Service conditions 4.1 Usual service conditions 4.1.1 General 4.1.2 Outdoor switch 4.1.3 Indoor switch 4.1.4 Enclosed switch 4.2 Unusual service conditions
18	5. Description of ratings and capabilities 5.1 General 5.2 Rated power frequency
19	5.3 Rated voltage 5.3.1 Rated maximum voltage 5.4 Rated withstand voltages 5.4.1 General 5.4.2 Rated power frequency withstand voltage 5.4.2.1 General 5.4.2.2 Rated power frequency dry withstand voltage 5.4.2.3 Rated power frequency wet withstand voltage
20	5.4.2.4 Rated power frequency dew withstand voltage 5.4.3 Rated lightning impulse withstand voltage 5.4.4 Rated switching impulse withstand voltage 5.5 Rated continuous current 5.5.1 General
21	5.5.2 Allowable continuous current 5.5.3 Loadability 5.5.4 Switch part class designation 5.5.5 Allowable continuous current class (ACCC) designation
22	5.5.6 Limits of observable temperature rise
25	5.6 Rated short-time withstand current 5.6.1 General 5.6.2 Rated peak withstand current 5.6.3 Rated peak withstand current duration 5.6.4 Rated short-time (symmetrical) withstand current duration 5.7 Rated fault-making current
26	5.8 Visible corona onset voltage 5.9 Radio-influence voltage (RIV) limit 5.10 Rated ice breaking ability 5.11 Rated mechanical operations 5.12 Rated mechanical terminal load 5.13 Rated control voltage
27	5.14 Rated closing time (for power operated switches) 5.15 Switching endurance—fault-initiating switch 5.16 Rated load-making current
34	6. Design and construction 6.1 Station class outdoor air disconnect switches 6.1.1 Insulators 6.1.2 Arrangement and size of bolt holes in terminal pads
35	6.1.3 Phase spacing (pole spacing) 6.1.4 Ground clearance 6.1.5 Single-pole switch dimensions
36	6.1.6 Base mounting holes 6.2 Distribution class outdoor air disconnect switches 6.2.1 Insulators 6.2.2 Arrangement and size of bolt holes in terminal pads 6.2.3 Phase spacing (pole spacing) 6.2.4 Ground clearance 6.2.5 Single pole switch dimensions 6.3 Station class outdoor regulator bypass switches 6.3.1 Insulators NOTE—Mechanical strength of insulators may need to be increase based upon application. Consult IEEE Std 605 [B8] and IEEE C2. 6.3.2 Arrangement and size of bolt holes in terminal pads
37	6.3.3 Phase spacing (pole spacing) 6.3.4 Ground clearance 6.3.5 Single-pole switch dimensions 6.3.6 Base mounting holes 6.4 Distribution class outdoor regulator bypass switches 6.4.1 Insulators 6.4.2 Arrangement and size of bolt holes in terminal pads 6.4.3 Phase spacing (pole spacing)
38	6.4.4 Ground clearance 6.4.5 Single-pole switch dimensions 6.5 Indoor air switches 6.5.1 Insulators 6.5.2 Arrangement and size of bolt holes in terminal pads 6.5.3 Phase spacing 6.5.4 Single pole switch dimensions 6.6 Grounding air switches
39	6.7 Fault-initiating switches 6.8 Nameplate markings 6.8.1 General 6.8.2 Fault-initiating switches 6.8.3 Power operating mechanism nameplate
40	6.9 Switch accessories 6.9.1 Hook stick lengths 6.9.2 Heaters for operating mechanisms 6.10 Instructions
41	6.11 Grounding requirements 6.12 Locking devices 6.13 Position indication 6.14 Electromagnetic compatibility (EMC) 6.15 Welding 6.16 Preferred ratings tables and figure
50	7. Test code 7.1 General 7.2 Withstand voltage tests 7.2.1 General 7.2.2 Power frequency withstand voltage tests 7.2.2.1 Power frequency dry withstand voltage test 7.2.2.2 Power frequency wet withstand voltage test 7.2.2.3 Power frequency dew withstand voltage test 7.2.2.4 Voltage application for power frequency dry and wet withstand voltage tests
51	7.2.2.5 Voltage application for power frequency dew withstand voltage test 7.2.2.6 Frequency and wave shape of the power frequency withstand voltage test 7.2.2.7 Mounting of specimen 7.2.2.8 Measurement of voltage 7.2.2.9 Points of application of voltage 7.2.2.10 Wet withstand voltage test standards, water resistivity, and rate of precipitation 7.2.2.11 Dew withstand voltage test standards
52	7.2.3 Lightning impulse dry withstand voltage tests 7.2.3.1 Full wave voltage test 7.2.3.2 Mounting of specimen 7.2.3.3 Conductors for use in tests 7.2.3.4 Proximity of other objects 7.2.3.5 Wave shape and tolerances 7.2.3.6 Points of application of voltage
53	7.2.3.7 Number of tests 7.2.3.8 Measurement of voltage 7.2.4 Power frequency and lightning impulse open gap withstand voltage test 7.2.4.1 General 7.2.4.2 Standard test 7.2.4.2.1 Mounting arrangement
54	7.2.4.2.2 Test procedure 7.2.4.2.3 Criteria for acceptance 7.2.4.3 Bias test 7.2.4.3.1 General
55	7.2.4.3.2 Test procedure 7.2.4.3.3 Number of tests 7.2.4.3.4 Criteria for acceptance 7.2.5 Switching-impulse voltage tests of switches rated 362 kV and above 7.2.5.1 Equipment to be tested 7.2.5.2 Mounting arrangement
56	7.2.5.3 Conductors for use in tests 7.2.5.4 Proximity of other objects 7.2.5.5 Points of application of voltage 7.2.5.6 Wave shape for switching impulse withstand voltage tests 7.2.5.7 Determination of withstand voltage
57	7.2.5.8 Switching impulse voltage open-gap withstand test 7.2.5.8.1 General 7.2.5.8.2 Test procedure 7.2.5.8.3 Criteria for acceptance 7.3 Temperature rise tests 7.3.1 Continuous current tests 7.3.1.1 General 7.3.1.2 Mounting
58	7.3.1.3 Connections 7.3.1.4 Test procedure 7.3.1.5 Method of temperature determination 7.3.1.6 Value of ambient temperature during test 7.3.1.7 Determination of ambient temperature
59	7.3.1.8 Measurement of equipment temperature 7.3.1.9 Duration of continuous current test 7.3.1.10 Observable temperature rise 7.3.1.11 Criteria for acceptance 7.3.2 Switch performance test 7.3.2.1 General
60	7.3.2.2 Conditions of test 7.3.2.3 Ambient temperature during test 7.3.2.4 Duration of switch performance test 7.3.2.5 Criteria for acceptance 7.4 Short-time withstand current tests 7.4.1 General
61	7.4.2 Test conditions 7.4.3 Switch connections 7.4.4 Measurement of current 7.4.5 Peak withstand current tests 7.4.5.1 General 7.4.5.2 Test procedure 7.4.6 Short-time (symmetrical) withstand current test 7.4.6.1 General 7.4.6.2 Test procedure
62	7.4.7 Condition of switch after test 7.5 Fault-making current test 7.6 Ice loading test 7.6.1 General 7.6.2 Ice formations
63	7.6.3 Test methods 7.6.3.1 General 7.6.3.2 Switch surface condition 7.6.3.3 Test arrangement 7.6.3.4 Measurement of ice thickness 7.6.4 Test conditions 7.6.4.1 General
64	7.6.4.2 Controlled environment (indoor laboratory) 7.6.4.3 Natural environment (outdoor) 7.6.5 Test procedure 7.6.5.1 Manually-operated switches
65	7.6.5.2 Power operated switches 7.6.5.3 Fault initiating switches 7.6.6 Criteria for acceptance 7.7 Mechanical operations tests 7.7.1 General 7.7.2 Test arrangement 7.7.3 Test procedure 7.7.3.1 General 7.7.3.2 Number of operations
66	7.7.3.3 Terminal loading 7.7.3.4 Power operated switches 7.7.3.5 Switch maintenance during test 7.7.4 Criteria for acceptance 7.8 Corona tests 7.8.1 General
67	7.8.2 Switches requiring corona tests 7.8.3 Test equipment 7.8.4 Frequency and wave shape of test voltage 7.8.5 Atmospheric conditions 7.8.6 Conductors for use in tests 7.8.7 Condition of switch 7.8.8 Method for conducting tests
68	7.8.9 Proximity of other objects 7.8.10 Pre-excitation prior to testing 7.8.11 Test voltage application 7.8.12 Corona-free voltage requirement 7.8.13 Criteria for acceptance
69	7.9 Radio-influence voltage tests 7.9.1 General 7.9.2 Test equipment 7.9.3 Methods for conducting tests 7.9.3.1 Outdoor group operated switches and single-pole switches 7.9.3.2 Multipole housed apparatus 7.9.4 Proximity of other objects 7.9.5 Ambient radio noise 7.9.6 Frequency and wave shape of test voltage 7.9.7 Atmospheric conditions
70	7.9.8 Test on assembled equipment 7.9.9 Precautions 7.10 Partial discharge test 7.11 Routine tests
71	Annex A (informative) Applications, guides, and suggested practices A.1 Selection of insulation levels A.2 General application conditions A.2.1 General A.2.2 Suggested practices—general
72	A.2.3 Unloaded transformer switching A.2.4 Bus, line, and insulated cable switching
73	A.3 Use of higher temperature materials A.4 Switching impulse voltage tests of switch open gap
74	A.5 Reference data
75	A.6 Historical data
76	Annex B (informative) Guide to current interruption with horn gap switches B.1 Basic suggestions
82	B.2 Arc reach B.2.1 Resistive or excitation current interruption B.2.2 Capacitive current interruption B.3 Adequacy of switch clearance B.3.1 Minimum phase clearance to grounded objects B.3.2 Phase-to-phase clearance for resistive, excitation, or capacitive current interruption
83	B.4 Calculation of suggested current interruption B.5 Sample calculations B.5.1 Example 1
84	B.5.2 Example 2
85	B.5.3 Example 3
88	Annex C (informative) Application conditions for continuous load current capability C.1 Allowable continuous current C.2 Switch part class designation C.3 Allowable continuous current class (ACCC) designation C.4 Allowable continuous current capability C.5 Allowable continuous current class designation for ANSI C37.30-1962 switches
89	C.6 Exceptions to temperature limitations C.7 Precautions C.8 Loadability curves for continuous load current
91	C.9 Application conditions for emergency load current capability C.9.1 Considerations
92	C.9.2 Capabilities
93	C.9.3 Loadability curves for emergency load current
97	Annex D (informative) Installation, operation, and maintenance D.1 Receipt and preparation D.1.1 Handling D.1.2 Unpacking D.1.3 Assembly and rigging D.2 Installation D.2.1 Personnel safety during installation D.2.2 Instructions for assembly D.2.3 Alignment
98	D.2.4 Rigidity D.2.5 Line conductors D.2.6 Bus conductors D.2.7 Equipment connections D.2.8 Ground connections D.2.9 Adjustments D.2.10 Cleaning equipment D.2.11 Inspection
99	D.3 Operation D.3.1 General D.3.2 Air switches D.3.2.1 General
100	D.3.2.2 Disconnecting, grounding, and horn-gap switches D.4 Maintenance
102	Annex E (informative) Short-time (symmetrical) withstand current and electromagnetic force equations E.1 Calculation of short-time (symmetrical) withstand current limits
103	E.2 Calculation of electromagnetic forces
105	Annex F (informative) Suggested sizes of conductors for temperature rise testing
106	Annex G (informative) Bibliography
108	Back Cover