NEMA CP 1-2000 Shunt Capacitors1.pdf
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1、NEMA Standards Publication CP 1-2000 Shunt Capacitors Published by: National Electrical Manufacturers Association 1300 North 17th Street Rosslyn, VA 22209 Copyright 2001 by the National Electrical Manufacturers Association. All rights including translation into other languages, reserved under the Un
2、iversal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and the International and Pan American Copyright Conventions. NOTICE AND DISCLAIMER The information in this publication was considered technically sound by the consensus of persons engaged in the de
3、velopment and approval of the document at the time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. NEMA standards and guideline publications, of which the document contained herein is one, a
4、re developed through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. While NEMA administers the process and establishes rules to promote fairness in the d
5、evelopment of consensus, it does not write the document and it does not independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications. NEMA disclaims liability for any personal injury, p
6、roperty, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, express or implied, as to the acc
7、uracy or completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulfill any of your particular purposes or needs. NEMA does not undertake to guarantee the performance of any individual manufacturer or sellers products or servi
8、ces by virtue of this standard or guide. In publishing and making this document available, NEMA is not undertaking to render professional or other services for or on behalf of any person or entity, nor is NEMA undertaking to perform any duty owed by any person or entity to someone else. Anyone using
9、 this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered by this publication may be available from
10、other sources, which the user may wish to consult for additional views or information not covered by this publication. NEMA has no power, nor does it undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test, or inspect products, designs, or installati
11、ons for safety or health purposes. Any certification or other statement of compliance with any health or safetyrelated information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. CP 1-2000 Page i CONTENTS Foreword. iii S
12、ection 1REFERENCED STANDARDS AND DEFINITIONS 1.1Scope.1 1.2Referenced Standards.1 1.3Definitions1 Section 2SERVICE CONDITIONS 2.1General5 2.2Altitude.5 2.3Ambient Temperature5 2.3.1Maximum Ambient Temperature5 2.3.1Minimum Ambient Temperature.5 2.4Determination of Ambient Temperature 5 2.5Mounting a
13、nd Installation of Capacitors and Equipments6 2.5.1Position.6 2.5.2Arrangements.6 2.5.3Unusual Installation Requirements.6 2.6Working Voltages 7 2.7Maximum Working Voltage .7 2.8Maximum Reactive kVAR7 2.9Unusual Service Conditions.7 Section 3RATING STANDARDS 3.1Basis of Rating.9 3.2Frequency9 Sectio
14、n 4MANUFACTURING STANDARDS 4.1Capacitor Terminals 11 4.2Provision for Making Connections to Capacitor Equipment 11 4.3Discharge Devices.11 4.4Dimensions11 4.4.1Mounting Hole Spacings.11 4.4.2Upright Non-Enclosed Substation Equipment 12 4.4.3Horizontal Non-Enclosed Substation Equipment12 4.5Nameplate
15、 Marking for Capacitors13 4.6Nameplate Marking for Racks and Housings or Capacitor Equipments .14 4.7Capacitor Bushings15 4.7.1Operation15 4.7.2Test Conditions.15 4.7.3Voltage Measurements.16 4.8Circuit Breakers, Contactors, and Disconnecting Devices17 4.8.1Standards .17 4.8.2Ratings17 4.8.3Applicat
16、ion 17 4.9Automatic Switching of Capacitors17 4.9.1Control17 4.9.2Capacitor Switching Device18 ? CP 1-2000 Page ii 4.9.3Control Enclosure.18 4.9.4Voltage Control-Single Step .18 4.9.5Voltage Control-Multistep .18 4.9.6Current Control-Single Step18 4.9.7Kilovar Control-Single Step.19 4.9.8Kilovar Con
17、trol-Multistep.19 Section 5TESTING STANDARDS 5.1General21 5.1.1Design (Type) Tests .21 5.1.2Routine (Production) Tests.21 5.2Test Conditions21 5.3Design (Type) Tests 21 5.4Routine (Production) Tests21 5.5Impulse Withstand Test-Case Insulation (Design Tests) 21 5.6Thermal Stability Test (Design Test)
18、 .22 5.6.1Selection of Samples22 5.6.2Test Method22 5.7Radio Influence Voltage (Design Test)23 5.7.1Equipment.23 5.7.2Test Voltages23 5.7.3Method of Test24 5.7.4Precautions in Making Tests 24 5.7.5RIV Limits .24 5.8Voltage Decay Test (Design Test).24 5.9Short-Time Overvoltage Tests (Routine Test).24
19、 5.9.1Terminal-to-Terminal Tests24 5.9.2Terminal-to-Case Tests25 5.10Capacitance Test (Routine Test).25 5.11Loss Test (Routine Test).25 5.12Discharge Resistor Test (Routine Test) 25 5.13Leak Test (Routine Test).25 Section 6GUIDE FOR THE APPLICATION AND OPERATION OF SHUNT CAPACITORS 6.1General27 6.2R
20、eliability27 6.3Overvoltage Limits and Protection.27 6.4Operating and Ambient Temperatures29 6.5Abnormal Overload Current.30 6.6Inspection and Maintenance30 6.7Field Test on Capacitors31 6.7.1Tests on Capacitors After Placement in Service31 6.7.2Handling of Failed Capacitors.32 6.8Fusing Guidelines3
21、2 6.8.1General.32 6.8.2Fuse Current Rating .32 6.8.3Fuse Voltage Rating.32 6.8.4Fuse Interrupting Rating.33 6.8.5Stored-Energy Transients.33 6.8.6Capacitor Protection Schemes.34 6.8.7Maximum Inductive Fault Currents.34 6.8.8Application Information.36 ? CP 1-2000 Page iii Foreword The requirements in
22、 this Standards Publication are intended to reflect the latest standards affecting these products. They are made available as a guide for the manufacturer and to assist the purchaser in selecting and obtaining a suitable product. This Standards Publication applies to capacitors designed for shunt co
23、nnections to alternating-current power transmission and distribution systems operating at frequencies of 50 or 60 hertz and below. The use of these standards is at the option of the individual manufacturer and the purchaser. It is anticipated that those who utilize them will derive benefit from the
24、advantages of functional interchangeability. To assure a meaningful publication, copies were sent during the draft stage to a number of individuals and organizations in the public and private sector having an interest in or responsibility for the purchase, testing, application, use, or inspection of
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