1、Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Sea Systems Command, ATTN: SEA 05S, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandardsnavy.mil, with the subject line “Document Comment”. Since contact
2、information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.dla.mil. AMSC N/A FSC 5925 INCH-POUND MIL-DTL-32485 8 November 2013 DETAIL SPECIFICATION CIRCUIT BREAKERS, VACUUM TYPE (VCB), ELECTRIC POWER, MEDIUM VOLTAGE, ALTE
3、RNATING CURRENT, DRAW-OUT REMOVABLE CONSTRUCTION, WITHOUT INTERNAL OVERCURRENT PROTECTION Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32485 ii CONTENTS PARAGRAPH PAGE 1. SCOPE 1 1.1 Scope 1 2. APPLICABLE DOCUMENTS 1 2.1 General . 1 2.2 Go
4、vernment documents. 1 2.2.1 Specifications, standards, and handbooks 1 2.3 Non-Government publications . 2 2.4 Order of precedence . 2 3. REQUIREMENTS . 2 3.1 Qualification 2 3.2 Safety . 3 3.3 Construction and performance requirements. 3 3.3.1 Materials and coatings 3 3.3.1.1 Recycled, recovered, o
5、r environmentally preferable materials 3 3.3.1.2 Prohibited materials 3 3.3.1.2.1 Polyvinyl chloride (PVC) . 3 3.3.1.3 Non-preferred materials 3 3.3.1.4 Painting. 3 3.3.1.4.1 Restrictions on painting corrosion-resistant material 3 3.3.1.4.2 Powder coating . 3 3.3.2 Drawout-mounted construction 3 3.3
6、.3 Mounting and dimensions 3 3.3.4 Creepage and clearance distances. . 3 3.3.4.1 Creepage and clearance distances for non-primary conductors 3 3.3.4.2 Creepage and clearance distances for primary conductors . 3 3.3.5 Insulation 3 3.3.6 Current-carrying connections. 4 3.3.6.1 Silver plating 4 3.3.6.2
7、 Conductivity of current path . 4 3.3.7 Wiring 4 3.3.8 Electronic devices (see 6.4.1). 4 3.3.8.1 Electrostatic discharge susceptible items . 4 3.3.8.2 Conformal coating 4 3.3.8.3 Aluminum electrolytic capacitors . 4 3.3.9 Environmental performance requirements. 4 3.3.9.1 Temperature 4 3.3.9.1.1 Ambi
8、ent temperature 4 3.3.9.1.2 Temperature rise . 4 3.3.9.2 Shock 4 3.3.9.3 Vibration . 4 3.3.9.4 Electromagnetic interference (EMI) . 4 3.3.9.4.1 EMI test procedures and results 4 3.3.9.5 X-radiation . 4 3.3.10 Electrical performance requirements. . 5 3.3.10.1 Bi-directional operation (reversing line
9、and load) 5 3.3.10.2 Nominal frequency and frequency range 5 3.3.10.3 Rated maximum voltage . 5 3.3.10.4 Nominal operating voltage . 5 3.3.10.5 Power frequency withstand voltage 5 3.3.10.5.1 Power frequency withstand voltage application points. 5 3.3.10.5.1.1 Application points between circuit break
10、er poles, primary current carrying circuits and ground 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32485 iii 3.3.10.5.1.2 Application points on control wiring (excluding charging motor) and ground . 5 3.3.10.5.1.3 Application points on
11、charging motor control wiring, and ground . 6 3.3.10.6 Lightning impulse withstand voltage (BIL) . 6 3.3.10.7 Voltage spike 6 3.3.10.8 Nominal control voltage . 6 3.3.10.9 Rated continuous current 6 3.3.10.10 Rated load current switching capability . 6 3.3.10.11 Rated maximum short-circuit (interrup
12、tion) current rating and conditions 6 3.3.10.12 Short-time current duty cycle (withstand) rating and conditions 6 3.3.10.13 Endurance/manual cycling . 6 3.3.10.14 Functionality at less than rated values 6 3.3.11 Attachments . 7 3.3.11.1 Temperature rise . 7 3.3.11.2 Endurance . 7 3.3.11.3 Electric c
13、losing devices 7 3.3.11.4 Shunt trip device . 7 3.3.11.4.1 Opening response time . 7 3.3.11.5 Auxiliary switches 8 3.3.11.6 Secondary disconnecting devices . 8 3.3.11.7 Operations counter . 8 3.3.11.8 Mechanical position indicators . 8 3.3.12 Operating mechanisms. 8 3.3.12.1 Simultaneous operation 8
14、 3.3.12.2 Closing. 8 3.3.12.2.1 Manual closing . 8 3.3.12.2.2 Electric closing . 8 3.3.12.2.3 Manual operating close control . 8 3.3.13 Withdrawal interlock mechanism . 9 3.3.14 Racking mechanism positions 9 3.3.14.1 Connect position . 9 3.3.14.2 Test position . 9 3.3.14.3 Disconnect position 9 3.3.
15、14.4 Withdrawn position 9 3.3.15 Trip-free . 9 3.3.16 Anti-pump 9 3.3.17 Contact integrity . 9 3.3.18 Grounding contact 9 3.3.19 Designation and marking . 9 3.3.19.1 Markings for attachments and small components. 9 3.3.19.2 Identification plates 9 3.3.19.2.1 Additional attachment identification plat
16、e 9 3.3.19.3 Warning plate. 10 3.3.20 Lifting. 10 4. VERIFICATION 10 4.1 Classification of inspections 10 4.2 Qualification inspection . 11 4.2.1 Test enclosures . 11 4.2.2 Periodic retention of qualification 11 4.3 Conformance inspection 13 4.4 Comparison inspection. 13 4.4.1 Comparison test sequen
17、ces. 13 4.4.1.1 Comparison test sequence 1 . 13 4.4.1.2 Comparison test sequence 2 . 14 4.4.1.3 Comparison test sequence 3 . 14 4.4.2 Rotation of attachments 14 4.5 Tests . 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32485 iv 4.5.1 Gen
18、eral examination 15 4.5.2 Creepage and clearance distances. . 16 4.5.2.1 Creepage and clearance distances for non-primary conductors 16 4.5.2.2 Creepage and clearance distances for primary conductors . 16 4.5.3 Attachment operating characteristics . 16 4.5.3.1 Electric closing device operation. . 16
19、 4.5.3.1.1 Voltage range/closing time . 16 4.5.3.1.2 Charging motor stall test . 16 4.5.3.2 Shunt trip device voltage range/tripping current 16 4.5.3.3 Operations counter, mechanical position indicator, and auxiliary switch operation 16 4.5.3.4 Auxiliary switch and associated secondary disconnecting
20、 device rating verification 16 4.5.4 Trip-free operation and anti-pump operation. 17 4.5.4.1 Mechanical . 17 4.5.4.2 Electrical . 17 4.5.5 BIL . 17 4.5.6 Power frequency withstand voltage. 17 4.5.6.1 Test equipment . 17 4.5.6.2 Voltage magnitude. 17 4.5.6.2.1 Full voltage . 17 4.5.6.2.2 Reduced volt
21、age . 17 4.5.6.3 Voltage application/duration and pass/fail criteria . 17 4.5.6.3.1 Circuit breaker and attachments . 17 4.5.6.3.1.1 Circuit breaker poles and ground used as test points 17 4.5.6.3.1.2 Control wiring and ground used as test points. . 18 4.5.6.3.1.2.1 Charging motor . 18 4.5.6.3.1.2.2
22、 All other secondary disconnect control wiring 18 4.5.7 X-radiation . 18 4.5.8 Endurance. 19 4.5.8.1 Circuit breakers 19 4.5.8.1.1 Mechanical endurance. . 19 4.5.8.1.1.1 Test setup and method of cycling 19 4.5.8.1.1.2 Number and rate of operations 19 4.5.8.1.2 Electrical endurance 19 4.5.8.1.2.1 Tes
23、t setup and method of cycling 19 4.5.8.1.2.2 Number and rate of operations 19 4.5.8.2 Attachments 19 4.5.8.3 Maintenance . 19 4.5.9 Contact integrity . 19 4.5.10 Conductivity of current path 19 4.5.11 Temperature rise. 19 4.5.11.1 Circuit breaker temperature rise at rated current (pre-interruption a
24、nd post-interruption). 19 4.5.11.1.1 Test circuit 19 4.5.11.1.2 Sensor locations. . 20 4.5.11.1.2.1 Ambient chamber 20 4.5.11.1.2.2 Ambient compartment 20 4.5.11.1.2.3 Circuit breaker 20 4.5.11.1.3 Temperature stabilization and temperature rise determination . 20 4.5.11.1.4 Pass/fail criteria 20 4.5
25、.11.2 Operation at stabilized temperature 20 4.5.11.3 Temperature rise above rated current . 20 4.5.11.4 Attachment temperature rise. 20 4.5.11.4.1 Electric closing and trip devices . 20 4.5.11.4.2 Auxiliary contacts, trip device, and secondary disconnecting device contacts . 20 4.5.12 Short-time du
26、ty cycle performance (withstand rating) . 21 4.5.12.1 Post short-time current duty cycle performance . 21 4.5.13 Interrupting current duty cycle performance 21 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32485 v 4.5.13.1 Interrupting curr
27、ent characteristics . 21 4.5.13.2 Post-interrupting current duty cycle performance 21 4.5.14 Shock 21 4.5.14.1 Test setup 21 4.5.14.2 Performance during shock tests 21 4.5.14.3 Post-shock performance . 21 4.5.15 Vibration 22 4.5.15.1 Test setup 22 4.5.15.2 Performance during vibration tests . 22 4.5
28、.15.3 Post-vibration performance 22 4.5.16 EMI 22 4.5.17 Voltage spike 22 5. PACKAGING . 22 5.1 Packaging . 22 6. NOTES . 22 6.1 Intended use . 22 6.2 Acquisition requirements . 22 6.3 Qualification 23 6.4 Definitions . 23 6.4.1 Electronic devices 23 6.5 Provisioning . 23 6.6 Rejected units . 23 6.7
29、 Subject term (key word) listing. . 23 LIST OF TABLES TABLE PAGE TABLE I. Temperature rises. . 5 TABLE II. Voltage requirements based on rated maximum voltage. . 7 TABLE III. Voltages for electric closing devices. 7 TABLE IV. Voltages for trip devices. 8 TABLE V. Identification plates. . 10 TABLE VI
30、. Qualification sequence. . 11 TABLE VII. Conformance inspection. . 13 TABLE VIII. Comparison test sequence 1. 14 TABLE IX. Comparison test sequence 2. . 15 TABLE X. Comparison test sequence 3. 15 TABLE XI. Power frequency withstand voltage test points (circuit breaker poles and ground) with circuit
31、 breaker open. . 18 TABLE XII. Power frequency withstand voltage test points (circuit breaker poles and ground) with circuit breaker closed. . 18 TABLE XIII. Temperature rise cable and bus bar requirements. . 21 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
32、m IHS-,-,-MIL-DTL-32485 1 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers medium voltage, alternating current, electric power vacuum type circuit breakers (VCB) without internal overcurrent protection,
33、 with attachments and draw-out removable construction for shipboard use. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or reco
34、mmended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.
35、2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPAR
36、TMENT OF DEFENSE SPECIFICATIONS MIL-S-901 - Shock Tests, H.I. (High-Impact) Shipboard Machinery, Equipment, and Systems, Requirements for MIL-DTL-915 - Cable, Electrical, for Shipboard Use, General Specification for MIL-E-917 - Electric Power Equipment Basic Requirements MIL-DTL-15024 - Plates, Tags
37、, and Bands for Identification of Equipment, General Specification for MIL-P-15024/5 - Plates, Identification MIL-DTL-16036 - Switchgear, Power, Low Voltage, Naval Shipboard MIL-PRF-24712 - Coatings, Powder (Metric) MIL-DTL-32483 - Switchgear, Power, Hard-Mounted, Medium Voltage, Naval Shipboard DEP
38、ARTMENT OF DEFENSE STANDARDS MIL-STD-130 - Identification Marking of U.S. Military Property MIL-STD-167-1 - Mechanical Vibrations of Shipboard Equipment (Type I Environmental and Type II Internally Excited) MIL-STD-461 - Requirements for the Control of Electromagnetic Interference Characteristics of
39、 Subsystems and Equipment MIL-STD-1285 - Marking of Electrical and Electronic Parts MIL-STD-1399-300 - Electric Power, Alternating Current MIL-STD-1686 - Electrostatic Discharge Control Program for Protection of Electrical and Electronic Parts, Assemblies and Equipment (Excluding Electrically Initia
40、ted Explosive Devices) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32485 2 DEPARTMENT OF DEFENSE HANDBOOKS MIL-HDBK-454 - General Guidelines for Electronic Equipment (Copies of these documents are available online at http:/quicksearch.dla
41、.mil/ or https:/assist.dla.mil.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN NATIONAL STANDARDS INSTITUTE (ANS
42、I) ANSI/NEMA C37.54 - Indoor AC High-Voltage Circuit Breakers Applied as Removable Elements in Metal-Enclosed Switchgear - Conformance Test Procedures ANSI C37.85 - AC High-Voltage Power Vacuum Interrupters - Safety Requirements for X-Radiation Limits (Copies of these documents are available from th
43、e American National Standards Institute, 25 W. 43rd St, 4th Floor, New York, NY 10036 or online at http:/webstore.ansi.org/.) ASTM INTERNATIONAL ASTM B700 - Standard Specification for Electrodeposited Coatings of Silver for Engineering Use (Copies of this document are available from ASTM Internation
44、al, 100 Barr Harbor Dr., P.O. Box C700, West Conshohocken, PA 19428-2959 or online at www.astm.org.) INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC. (IEEE) IEEE C37.04 - IEEE Standard for Rating Structure for AC High-Voltage Circuit Breakers Corrigendum 1 IEEE C37.06 - IEEE Standard for AC H
45、igh-Voltage Circuit Breakers Rated on a Symmetrical Current Basis Preferred Ratings and Related Required Capabilities for Voltages Above 1000 V IEEE C37.09 - IEEE Standard Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis (Copies of these documents are availabl
46、e from the Institute of Electrical and Electronics Engineers, Inc., 445 Hoes Lane, P.O. Box 1331, Piscataway, NJ 08855-1331 or online at www.ieee.org.) IPC IPC-CC-830 - Qualification and Performance of Electrical Insulating Compound for Printed Wiring Assemblies IPC-2222 - Sectional Design Standard
47、for Rigid Organic Printed Boards (Copies of these documents are available from IPC, 3000 Lakeside Drive, 309 S, Bannockburn, IL 60015 or online at www.ipc.org.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and
48、 the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. Circuit breakers furnished under this specification shall be produ
49、cts that are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.2 and 6.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-32485 3 3.2 Safety. Unless otherwise specified herein, the safety requirements of MIL-E-917 shall be adhered to during design and manu
