1、MIL-STD-1399(NAVY)SECTION 3902 October 1987MILITARY STANDARDINTERFACE STANDARD FOR SHIPBOARD SYSTEMSSECTION 390ELECTRIC POWER, DIRECT CURRENT, (OTHER THAN SHIPS BATTERY)FOR SUBMARINES (METRIC)AMSC N/A FSC 1990DISTRIBUTION STATEMENT A Approved for public release; distribution unlimitedProvided by IHS
2、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399(NAVY)SECTION 3902 October 1987DEPARTMENT OF THE NAVYNAVAL SEA SYSTEMS COMMANDWashington, DC 20362-5101Interface Standard for Shipboard Systems, Electric Power, Direct Current, (OtherThan Ships Battery) fo
3、r Submarines (METRIC)1. This Military Standard is approved for use by the Naval Sea Systems Command,Department of the Navy, and is available for use by all Departments and Agenciesof the Department of Defense.2. Beneficial comments (recommendations, additions, deletions) and any perti-nent data whic
4、h may be of use in improving this document should be addressedto: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy,Washington, DC 20362-5101 by using the self-addressed Standardization DocumentImprovement Proposal (DD Form 1426) appearing at the end of this document or byletter
5、.iiProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399(NAVY)SECTION 3902 October 1987FOREWORDPurpose. This standard defines the electrical interface requirements for,and the constraints on, the design of submarine systems/equipments whichwil
6、l utilize direct current (dc) electric power. This standard does not applyto, nor shall be used for, the design of ship service dc power system loadconnected to the main storage battery. Submarine equipment designers and usersof the system must comply with these interface and systems constraints/req
7、uirementswhen developing, producing and acquiring equipments to assure that satisfactoryequipment operation and performance are obtained.Structure. This standard first delineates the electrical characteristics ofthe dc power interface in terms of voltage, continuity, source impedance, andother param
8、eters. The constraints on system and equipment design which arenecessary to achieve these characteristics are then established.Standardization. The need for a dc power standard has been established withthe use of dc power as primary power for electronic systems. Characteristicsof submarine supplied
9、dc electric power for electronic systems are delineatedin this standard.Numerical quantities. Numerical quantities are expressed in metric (SI) units.iiiProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or n
10、etworking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or network
11、ing permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399(NAVY)SECTION 3902 October 19871. SCOPE AND INTERFACE1.1 Scope. This standard defines and establishes interface requirementsfor submarine equipment
12、s utilizing dc electric power from sources other thanthe main storage battery to ensure compatibility between such user equipmentsand the power system, and between individual user equipments. It defines thesubmarine electric power system characteristics, requires that user equipmentsbe designed to o
13、perate from power systems with these characteristics, andrestricts any adverse effect of any user equipments on the power system. Thisstandard does not apply to, nor shall it be used for, the design of shipservice dc power system loads connected to the main storage battery.1.2 Interface. The basic c
14、haracteristics and constraints categoriesconcerned with this interface are shown symbolically on figure 1. Theinterface, as it concerns the characteristics of dc electric power, is locatedat the input terminals of any user equipment.2. REFERENCED DOCUMENTS2.1 Government documents.2.1.1 Standards. Un
15、less otherwise specified, the following standards ofthe issue listed in that issue of the Department of Defense Index ofSpecifications and Standards (DoDISS) specified in the solicitation form apart of this standard to the extent specified herein.STANDARDSMILITARYMIL-STD-461 - Electromagnetic Emissi
16、on and SusceptibilityRequirements for the Control of ElectromagneticInterference.MIL-STD-462 - Electromagnetic Interference Characteristics,Measurement of.(Copies of standards required by contractors in connection with specificacquisition functions should be obtained from the contracting activity or
17、as directed by the contracting officer.)2.2 Order of precedence. In the event of a conflict between the textof this standard and the references cited herein, the text of this standardshall take precedence.3. DEFINITIONS3.1 Ground (ground potential). Ground is the hull metal structure orgrounding sys
18、tem of the ship which is connected to electric or electronicequipment or systems for creating a common reference point to establish zeropotential.1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399 (NAVY)SECTION 3902 October 19873.1.1 Groun
19、ding (of electric systems/equipment). Grounding is theprocess of establishing a minimum impedance current path between a selectedelectric circuit or equipment and ground potential.3.1.2in which ateffectively3.1.3Grounded electric system. A grounded electric system is a systemleast one conductor, or
20、a point of the system is intentionally andgrounded.Ungrounded electric system. An ungrounded electric system is asystem which is not intentionally grounded, except for test purposes.3.2 Electric power system. The electric power system is composed of theelectric power generation and distribution syst
21、em including generators,cables, switchboards, protective devices, converters and regulators up to theinterface.3.3 User equipment. User equipment is any system or component installedin the ship which uses dc electric power as specified by this standard, andwhich is supplied power directly from the s
22、hips system (excluding the mainstorage battery dc system).3.4 Interface. The interface is located at the input terminals of theuser equipment.3.5 Voltage. All voltages are dc, except as otherwise specified.3.5.1 Nominal user voltage. Nominal user voltage is the designatedvoltage, at the interface.3.
23、5.2 User voltage tolerance (steady state). Steady state user voltagetolerance is the maximum permitted continuous departure from nominal uservoltage during normal operation, excluding transients. Steady state uservoltage tolerance includes ripple voltage and variations such as those causedby dc load
24、 changes, regulator variation and system voltage regulator drift.Tolerances are expressed in percent of nominal user voltage.3.5.3 Voltage transients.3.5.3.1 Voltage transient tolerance. A voltage transient is a singleevent characterized as a sudden change in system voltage (line-to-line) whichgoes
25、outside the user voltage tolerance and returns to and remains withinthis tolerance. The voltage transient tolerance is in addition to the uservoltage tolerance limit.3.5.3.2 Voltage transient recovery time. Voltage transient recoverytime is the time elapsed from initiation of the transient until the
26、 voltagerecovers to the user voltage tolerance.3.5.3.3 Voltage spike. A voltage spike is a voltage variation of lessthan 1 millisecond duration which exceeds the voltage transient tolerance. Thevoltage spike q ay be positive or negative, and occur from line-to-line or fromline-to-ground.2Provided by
27、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399(NAVY)SECTION 390 -2 October 19873.5.4 System ripple voltage (percent). System ripple voltage is thealternating component of the unidirectional voltage from a dc power source.Percent ripple voltage is
28、the ratio of the root mean square (rms) value of theripple voltage to the nominal user voltage expressed in percent.3.5.5 Overvoltage and undervoltage. Overvoltage and undervoltage arethose voltages which exceed the user voltage tolerance limits for timesexceeding those specified for the voltage tra
29、nsient recovery times.3.6 Ripple current. Ripple current is the alternating component,including noise, of the unidirectional current from a dc power source.3.7 Inrush current/initialization. Inrush current/initialization isusually characterized by a large (several times normal full load) peak instan
30、-taneous current which flows upon energizing the user equipment or part thereof.3.8 Rate of change (slew rate). The rate of change is a change in aparameter of interest in a specified unit of time; for example, volts persecond and amperes per second.3.9 Isolation. Isolation is the degree of ohmic se
31、paration between twopoints .3.10 Limited break supply. A limited break supply provides power fromone of two or more independent power sources with automatic means fortransferring the user equipment to one of the other power sources within aspecified time.3.11 No-break supply (uninterruptible power s
32、upply). A no-break supplyprovides power from two or more independent power sources such that the inter-face characteristics are continuously held within specified limits under asingle failure condition.3.12 Siemens. Siemens is the unit of conductance (mho) (end of admittance)in the International Sys
33、tem of Units (SI). The siemens is the conductance ofa conductor such that a constant voltage of 1 volt between its ends producesa current of 1 ampere.3.13 Common mode interference. Common mode interference is interferencethat appears between both power leads and a common reference plane (ground)and
34、causes the potential of both sides of the transmission path to be changedsimultaneously and by the same amount relative to the common reference plane(ground).3.14 Differential mode interference. Differential mode interference isinterference that causes the potential of one side of the transmission p
35、ath tobe changed relative to the other side.3.15 Auctioneering (OR ing. Auctioneering is connecting two sourcestogether by means of diodes. The two diodes have their cathodes connected atthe common output and one of the anodes of the two diodes is connected to one3Provided by IHSNot for ResaleNo rep
36、roduction or networking permitted without license from IHS-,-,-MIL-STD-1399(NAVY)SECTION 3902 October 1987of the power sources and the second anode is connected to the second source.Additional sources can be added in the same manner with one diode for eachadded source.3.16 Free wheeling. Free wheeli
37、ng describes the condition where currentthat has been flowing through a series switch is provided with a path on theload side of the switch which connects the negative (return) power conductorto the positive power conductor whenever the switch is opened. This pathis normally provided by a free wheel
38、ing diode whose anode is connected to thenegative connector and whose cathode is connected to the positive conductor.4. GENERAL REQUIREMENTS4.1 Interface requirements and constraints. The specific interfacerequirements and constraints established herein are mandatory and shall beadhered to by all en
39、gaged in the design of submarine dc electric power systemsand user equipment. This standard does not apply to the ship service dc powersystem which is connected to the main storage battery.4.2 Conformance tests. Test requirements to ensure conformance of userequipments to the interface characteristi
40、cs and constraints specified in thisstandard shall be included as part of the acquisition specification (see 5.4).5. DETAILED REQUIREMENTS5.1 Electric dc power source characteristics.5.1.1 Type of power. The ships dc power is provided from powerconversion equipment and is in the form of a two-wire u
41、ngrounded system.Table I specifies the interface characteristics of this dc electric power.4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399(NAVY)SECTION 3902 October 1987TABLE I. Interface characteristics of the electricpower system. - C
42、ontinuedVoltage transients may occur anywhere in the user voltage tolerance range(see figure 2).5.1.2 Power interruption.5.1.2.1 Limited-break power. Limited-break power is accomplished byORing two or more independent power sources. On loss of one of the powersources, loads are transferred to the ot
43、her power sources. Limited-breakpower shall ensure that power characteristics during load transfer shall notexceed 3 milliseconds. During load transfer, the voltage transient shalldeviate from those outlined in table I for a period not to exceed the uppertransient limit specified in table I and show
44、n on figure 2. During loadtransfer, the voltage may drop from plus 155 Vdc (plus or minus 12 percent) toas low as minus 3.0 volts, depending on the load and configuration of theelectrical distribution system during the transfer interval. Negative tran-sients below minus 3.0 volts shall be prevented
45、by a free wheeling diodewhich is connected across the power source output terminals after the ORingdiodes. The ORing and free wheeling functions shall be accomplished at theswitchboard where the multiple sources are connected.5.1.2.2 No-break power. No-break power is accomplished by ORing two ormore
46、 independent power sources. On loss of one of the power sources, loadsare transferred to the other power sources. No-break power shall ensure thatthe interface characteristics will be maintained within the upper and lowertransient limits as specified in table I and shown on figure 2. Additionalor di
47、fferent requirements beyond those in this standard may be imposed on theequipment or power source depending on individual ship configuration (see 6.5).5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399(NAVY)SECTION 3902 October 19875.1.3 G
48、rounding. The dc power system is ungrounded except forIntermittent grounding permitted for the operation of ground detectionequipment which imposes 500 Vdc on each line-to-ground.5.1.4 Power source ripple.5.1.4.1 Power source ripple voltage. The total power source rms ripplevoltage shall not exceed
49、1.5 percent when measured with a true rms voltmeterhaving a minimum bandwidth of 50 kilohertz (kHz) for a single power sourcedriving a 1 kilowatt (kW) resistive load.5.1.4.2 Power source ripple current. Any single frequency component ofthe power source ripple current shall not exceed the differential mode limitsshown
