1、 The Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue, New York, NY 10016-5997, USACopyright 2003 by the Institute of Electrical and Electronics Engineers, Inc.All rights reserved. Printed in the United States of America.Print:ISBN 0-7381-3602-6 SH95097PDF:ISBN 0-7381-3603-4 SS95
2、097No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.ANSI C37.22-1997American National Standard Preferred Ratings and Related Required Capabilities for Indoor ACMedium-Voltage Switches Used
3、 inMetal-Enclosed SwitchgeariiAmerican National StandardApproval of an American National Standard requires verification by ANSI that the requirements for due process,consensus, and other criteria for approval have been met by the standards developer.Consensus is established when, in the judgment of
4、the ANSI Board of Standards Review, substantial agreement hasbeen reached by directly and materially affected interests. Substantial agreement means much more than a simplemajority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that aconcerted eff
5、ort be made toward their resolution.The use of American National Standards is completely voluntary; their existence does not in any respect precludeanyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products,processes, or procedures not conformi
6、ng to the standards.The American National Standards Institute does not develop standards and will in no circumstances give aninterpretation of any American National Standard. Moreover, no person shall have the right or authority to issue aninterpretation of an American National Standard in the name
7、of the American National Standards Institute. Requestsfor interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of thisstandard.CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures ofthe American Nati
8、onal Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw thisstandard. Purchasers of American National Standards may receive current information on all standards by calling orwriting the American National Standards Institute.Published byNational Electrical
9、Manufacturers Association1300 N. 17th Street, Rosslyn, Virginia 22209 Copyright 1997 by the National Electrical Manufacturers Association. All rights including translation into otherlanguages, reserved under the Universal Copyright Convention, the Berne Convention or the Protection of Literary andAr
10、tistic Works, and the International and Pan American Copyright Conventions.No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without priorwritten permission of the publisher.Printed in the United States of AmericaiiiForeword(This foreword is n
11、ot part of ANSI C37.22-1997, Preferred Ratings and Related Required Capabilities for Indoor AC Medium-Voltage Switches Used in Metal-Enclosed Switchgear.)This new standard reflects the ongoing, definitive changes being made in standards for technical improvement as wellas to reflect industry practic
12、e.Periodic review of this standard takes place through the normal ANSI procedural requirement that standards bereaffirmed, revised or withdrawn within five years of the original publication date.Suggestions for improvement of this standard will be welcome. They should be sent to:Vice President, Engi
13、neering DepartmentNational Electrical Manufacturers Association1300 North 17th StreetRosslyn, Virginia 22209This standard was processed and approved for submittal to ANSI by Accredited Standard Committee of PowerSwitchgear, C37. Committee approval of the standard does not necessarily imply that all
14、committee members voted forits approval. The basic data included in this new document is a result of new standards being developed that need thePreferred Ratings contained herein. At the time of approval, the C37 Committee had the following members:E. Byron, Chair A.K. McCabe (Executive Vice-Chairma
15、n, HV Standards)J. Scott (Executive Vice-Chairman, LV Standards)D.L. Swindler (Executive Vice-Chairman, IEC Activities)M. Calwise, Secretary Organizations Represented Name of RepresentativeElectric Light and Power Group D.E. GaliciaD.G. KomassaJ.L. KoepfingerM.C. MingoiaJ.H. ProvanzanaT.E. Bruck (Al
16、t.)Institute of Electrical and Electronics Engineers L.R. BeardP.W. DwyerA. MonroeD.F. PeeloD. SigmonS.C. Atkinson (Alt.)D.G. Kumbera (Alt.)L.V. McCall (Alt.)ivThe following members of NEMA Power Switchgear Assemblies Technical Committee worked on this standard priorto its publication:G. Sakats, Cha
17、ir M. BeardE. ByronR.W. LongG. NourseA. PaullinF. TeufelG. JonesD. SwindlerR. MurrayT. OlsenP. DwyerNational Electrical Manufacturers Association R. GarzonG. HaynesW. KrachtH.L. MillerT. OlsenD. StoneE. Byron (Alt)G.T. Jones (Alt)G. Sakats (Alt)D.L. Swindler (Alt)Testing Laboratory Group L. FrierP.
18、NotarianTennessee Valley Authority D.N. ReynoldsU.S. Dept. Of the Army-Office of the Chief of Engineers J.A. GilsonU.S. Dept. of the Navy-Naval Construction Battalion Cntr. R.R. NicholasWestern Area Power Administration G.D. BirneyOrganizations Represented Name of RepresentativevCLAUSE PAGE1. Scope.
19、12. Referenced standards 13. Indoor medium-voltage switches 11American National StandardPreferred Ratings and Related Required Capabilities for Indoor AC Medium-Voltage Switches Used in Metal-Enclosed Switchgear1. ScopeThis standard provides preferred ratings for indoor AC medium-voltage switches us
20、ed in metal-enclosed switchgear.2. Referenced standardsThis standard is intended to be used in conjunction with the following standards. When the referenced standards aresuperseded by an approved revision, the revision shall apply; except in the case of ANSI/IEEE Std.4, the 1978 editionshall apply.A
21、NSI/IEEE C37.20.4-1997, Trial Use Guide for Indoor AC Medium-Voltage Switches for Use in Metal-EnclosedSwitchgear*ANSI/IEEE C84.1-1982, Voltage Ratings (60 Hz)Electric Power Systems and EquipmentANSI/IEEE C37.100-1992, Definitions for Power SwitchgearANSI/IEEE C37.20.2-1994 , Metal-Clad and Station-
22、Type Cubicle SwitchgearANSI/IEEE C37.20.3-1987 (R1993), Metal-Enclosed Interrupter SwitchgearANSI/IEEE Std 4-1978, IEEE Standard Techniques for High-Voltage Testing3. Indoor medium-voltage switchesFor basis of rating, refer to ANSI/IEEE C37.20.4, Indoor AC Medium-Voltage Switches for Use in Metal-En
23、closedSwitchgear. The preferred ratings for these switches are listed in tables 1, 2, 3, 4 and 5.2Copyright 2003 IEEE All Rights ReservedANSI C37.22-1997 PREFERRED RATINGS AND RELATED REQUIRED CAPABILITIES FOR INDOORTable 1 Preferred voltage and insulation levels for indoor AC medium-voltage switche
24、s for use in metal-enclosed switchgearDielectric Withstand Test VoltagesLine No.Rated Maximum VoltagekV, rms (1)Impulse Withstand*kV, Peak (3)* 1.2 50 microseconds positive and negative waves. Ref. ANSI/IEEE Std.4. Power Frequency WithstandkV, rms (3)Reference DC WithstandkV (2)Col 1 Col 2 Col 3 Col
25、 414.76 60 19 272825 95 36 503159 654 27 125 60 (2)5 38 150 80 (2)(Number in parentheses in the table refer to the following correspondingly numbered notes.)For service conditions, definitions and interpretation of ratings, tests and qualifying terms, see ANSI/IEEE C37.20.4 and ANSI/IEEE C37.100. 1
26、The voltage rating is based on ANSI C84.1, where applicable, and is the maximum voltage for which the switch is designed and is the upper limit for operation.2 The column headed DC Withstand is given as a reference only for those using DC tests. It represents values believed to be appropriate and ap
27、proximately equivalent to the corresponding power frequency withstand test values specified for each voltage rating. The presence of this column in no way implies any requirement for a DC withstand test on AC equipment or that a DC withstand test represents an acceptable alternative to power frequen
28、cy withstand tests. When making DC tests, the voltage should be raised to the test value in discrete steps and held for a period of 1 min. Because of the variable voltage distribution encountered when making DC withstand tests, the manufacturer should be contacted for recommendations before applying
29、 DC withstand tests.3 Field tests are made at 0.75 times the values listed.Copyright 2003 IEEEAllRightsReserved3ACMEDIUM-VOLTAGESWITCHES USED IN METAL-ENCLOSED SWITCHGEARC37.22-1997Table 2 Preferred short-time, momentary and fault closing current ratings forIndoor AC medium-voltage switches used in
30、metal-enclosed switchgearRatingsReference Fault Closing and Momentary Current kA, PeakLine No.Rated Continuous Currentat 60 HzAmperes, rmsRated Short-Time Current*kA, rms(Symmetrical)* The preferred duration of short-time current is 2 secondsRated Momentary CurrentkA, rms(Asymmetrical)Rated Fault Cl
31、osing CurrentkA, rms(Asymmetrical)Col 1 Col 2 Col 3 Col 4 Col 51 200 12.5 20 20 332 600, 1200 25 40 40 653 600, 1200 38 61 61 994 1200 50 80 80 1305 2000, 3000 38 61 N/A 996 2000, 3000 50 80 N/A 1304Copyright 2003 IEEE All Rights ReservedANSI C37.22-1997 PREFERRED RATINGS AND RELATED REQUIRED CAPABI
32、LITIES FOR INDOORTable 3 Preferred load current switching ratings and endurance capabilitiesTable 4 Mechanical endurance capabilitiesLine NoRated Load Current Switching at 60 Hz Amperes, rmsNumber of Operations at Rated Maximum Voltage (kV rms) (Each operation is comprised of one closing plus one op
33、ening)4.76 kV 8.25 kV 15 kV 27 kV 38 kVCol 1 Col 2 Col 3 Col 4 Col 5 Col 61 200, 600 50 30 30 10 52 1200 20 10 10 Line No.Rated Continuous Current Amperes, rmsRated Fault Closing CurrentkA, rms AsymmetricalNumber of No-Load Operations (Each operation is comprised of one closing plus one opening)Rate
34、d Maximum Voltage 4.7615 kV, rmsRated Maximum Voltage 2738 kV, rmsCol 1 Col 2 Col 3 Col 41 200, 600 None 750 5002 200 20 600 4503 600 40 500 3504 600 61 350 2505 1200 None 400 3006 1200 40/61 250 1507 1200 80 150 1008 2000 None 300 2509 3000 None 250 200Copyright 2003 IEEE All Rights Reserved5AC MED
35、IUM-VOLTAGE SWITCHES USED IN METAL-ENCLOSED SWITCHGEAR ANSI C37.22-1997Table 5 Preferred rated control voltages and their ranges for indoor AC medium-voltage switches used in metal-enclosed switchgearOperating mechanisms are designed for the rated control voltages listed with operational capability
36、throughout the indicated voltage ranges to accommodate variations in source regulation, coupled with DC low charge levels, as well as DC high charge levels maintained with DC floating chargers. The maximum voltage is measured at the point of user connection to the switch with no operating current fl
37、owing and the minimum voltage is measured with maximum operating current flowing.Direct Current Control Voltage Alternating Current Control VoltageRanges (1) (2) (3) (6) (9) (10)Functions Ranges (1) (2) (3) (9)Rated Control Voltage (volts, DC)Closing and Auxiliary OpeningRated Control Voltage (volts
38、 60 Hz)Closing Opening & Auxiliary Functions (4) (5)Line No. Col 1 Col 2 Col 3 Col 4 Col 51 24 (7) 1428 Single Phase Single Phase2 48 (7) 3856 2856 120 104127 (8)3 240 208254 (8)4 125 100140 70140 Polyphase5 250 200280 140280 208Y/120 180Y/1046 240 208254NOTES: (Number in parentheses in the table re
39、fer to the following correspondingly numbered notes.)1 Electrically operated motors, contactors, solenoids, valves, and the like, need not carry a nameplate voltage rating that corresponds to the control voltage rating shown in the table as long as these components perform the intended duty cycle (u
40、sually intermittent) in the voltage range specified.2 Relays, motors, or other auxiliary components that function as a part of the control for a device shall be subject to the voltage limits imposed by this standard, whether mounted at the device or at a remote location.3 Device control components,
41、in some applications, may be exposed to control voltages exceeding those specified here due to abnormal conditions such as abrupt changes in line loading. Such applications require specific study, and the manufacturer should be consulted. Also, application of switchgear control components containing
42、 solid-state control, exposed continuously to control voltages approaching the upper limits of ranges specified herein, require specific attention and the manufacturer should be consulted before application is made.4 Closing functions include (a) the closing power mechanism, and (b) the means (coils
43、, contactors, seal-in relays, and the like) to actuate the power mechanisms. Auxiliary functions include all functions except closing and opening.5 Opening is the release of the holding means that permits stored energy to open the device.6 It is recommended that the coils of closing, auxiliary, and
44、opening components that are connected continually to one DC potential should be connected to the negative control bus so as to minimize electrolytic deterioration.7 24-volt or 48-volt control voltages are recommended only when both the control components and devices are located near the battery or w
45、here special effort is made to ensure adequate control voltage at the control terminals. The 24-volt closing function is not recommended.8 Includes heater circuits9 Devices utilizing standard auxiliary relays for control may not function at lower extremes of voltage ranges when relay coils are hot,
46、as after repeated or continuous operation.10 Direct current control voltage sources, such as those derived from rectified alternating current, may contain sufficient inherent ripple to modify the operation of control devices to the extent that they may not function over the entire specified voltage ranges.
