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_API_STD_543
Nothing contained in any aPl publication is to be construed as granting anyright,by implication or otherwise,for the manufacture,sale,or use in connectionwith any method,apparatus,or product covered by letters patent,nor as insuringanyone against liability for infringement of letters patent.API publications may be used by anyone desiring to do so.Every effort has beenmade by the Institute to assure the accuracy and reliability of the data contained inthem.However,the Institute makes no representation,warranty,or guarantee inconnection with API publications and hereby expressly disclaims any liability orresponsibility for loss or damage resulting from their use:for any violation of anyfederal,state,or municipal regulation with which an API publication may conflict;or for the infringement of any patent resulting from the use of an API publication.CopyrightI976A由erican Petroleum InstituCONTENTSPAGESECTION I-GENERAL1.1 Scope1.2 Application1.3 Unusual Service Conditions.1.4Operating Experience.1.5 Guarantee11.6 Drawings and Data.l.6.】General1.6.2 Preliminary Drawings and Data1.6.3 Final Drawings and Data.2SECTION 2-CONSTRUCTION2.1General2.2 Mechanical Design Features232.2.1 Indoor Installations.32.2.2Outdoor Installations32.2.3 General Requirements for All Controllers.2.2.4 Oil-Immersed Controllers.32.3 Electrical Design Features42.3.】C0 tactor542.3.2.4SECTION 3-PROTECTION3.1 Protective Devices.43.2 Control Transformers.43.3 Space Heaters and Heater BusSECTION 4-INTERLOCKING AND SAFETY FEATURES4.】【nterl0 cking54.2 solating Switch4.3 Protection During Maintenance.54.4 Nonpressurized Controllers.SECTION 5-CONTROL5.1 Control Devices.55.【.Externally Operable55.1.2 Internally Operable5.2 Remote Operation5SECTION 6-ACCESSORIES AND OPTIONS6.1 Switches and Indicating Lights.56.2St0rag56.3 Nameplates.56.4 Optional Features6SECTION 7-TESTS AND PERFORMANCE7.Voltage Tests67.2Electrical and Mechanical Devices.67.3 Independent Functions7.4 Enclosure Designs.6SECTION 8-SHIPPING68.2Equipment Identification and Shipping Instructions68.3 Temporary Materials6APPENDIX A-TYPICAL DATA SHEET FOR MEDIUMVOLTAGE SQUIRREL CAGE INDUCTION MOTORCONTROLLERS(2,400,4,160,and 4,800 Volts)7APPENDIX B-TYPICAL DATA SHEET FOR MEDIUMVOLTAGE SQUIRREL CAGE INDUCTION MOTORCONTROLLERS(2,400,4,160,and 4,800 Volts).9APPENDIX C-CHECKLIST11i