1、 METRIC MIL-STD-1399 SECTION 680 24 APRIL 2008 DEPARTMENT OF DEFENSE INTERFACE STANDARD SECTION 680 HIGH VOLTAGE ELECTRIC POWER, ALTERNATING CURRENT AMSC N/A FSC 1990 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399-680 FOREWORD 1. Preamb
2、le. This military standard is approved for use by the Department of the Navy and is available for use by all Departments and Agencies of the Department of Defense. 2. Purpose. This section defines the standard interface requirements for and the constraints on the design of shipboard user equipment t
3、hat will utilize shipboard high voltage (industry: medium voltage) alternating current (AC) electric power. 3. Nature of the interface. In any system involving power source, distribution network, and load (user equipment), the characteristics at the system and user equipment interface are mutually d
4、ependent on the design and operation of both. In order for the electric power system to perform within the established tolerances, it is necessary to place constraints on the power source, the distribution system and the user equipment. This interface standard defines the electric power system chara
5、cteristics. User equipment constraints are also established. 4. Structure. The technical content first delineates the characteristics of the shipboard electric power system at the interface in terms of voltage, frequency, continuity, and voltage waveform. Constraints on user equipment design and ins
6、tallation, which are necessary to achieve shipboard compatibility with and to assure these characteristics, are then established. Finally, test requirements are specified to verify conformance of AC user equipment to this standard. 5. Invoking the standard. The Principal Development Activity (PDA) w
7、ill consider the mission requirement of the user equipment being developed or acquisitioned. The PDA will then select those conditions under which the user equipment is to operate and those conditions, which the user equipment will withstand without failure, but not necessarily, operate normally. Th
8、e PDA will also specify those tests commensurate with the equipments mission, which will ensure the user equipments satisfactory operation, the user equipments compatibility with the shipboard electric power system and other equipment, and the equipments survival. 6. Numerical quantities. Numerical
9、quantities are expressed in metric (SI) units. 7. Contact information. Comments, suggestions, or questions on this document should be addressed to Commander, Naval Sea Systems Command, ATTN: SEA 05M2, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStan
10、dardsnavy.mil, with the subject line “Document Comment”. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. ii Provided by IHSNot for ResaleNo reproduction or networking permitted withou
11、t license from IHS-,-,-MIL-STD-1399-680 CONTENTS PARAGRAPH PAGE1. SCOPE.11.1 Scope 11.2 Classification 12. APPLICABLE DOCUMENTS .12.1 General.12.2 Government documents .12.2.1 Specifications, standards, and handbooks .12.3 Order of precedence .13. DEFINITIONS 13.1 Electric power system.13.2 Electric
12、 power system ground 13.2.1 Ungrounded electric power system .23.2.2 High-resistance grounded electric power system 23.2.3 Solidly-grounded electric power system .23.3 Frequency .23.3.1 Nominal frequency 23.3.2 Frequency tolerance.23.3.3 Frequency modulation .33.3.4 Frequency transients33.3.4.1 Freq
13、uency transient tolerance.33.3.4.2 Frequency transient recovery time33.4 Voltage .33.4.1 Navy high voltage33.4.2 Nominal user voltage.33.4.3 User voltage tolerance .43.4.4 Voltage unbalance (line-to-line)43.4.5 Voltage modulation (amplitude)43.4.6 Voltage transients 53.4.6.1 Voltage transient tolera
14、nce .53.4.6.2 Voltage transient recovery time53.4.7 Voltage spike.63.4.8 Voltage waveform .63.4.8.1 Voltage single harmonic.6 3.4.8.2 Voltage single harmonic content 63.4.8.3 Voltage total harmonic distortion.63.4.8.4 Voltage deviation factor .73.5 Current73.5.1 Current unbalance73.5.2 Current wavef
15、orm73.5.2.1 Current single harmonic .73.5.2.2 Current single harmonic content.83.5.3 Surge/inrush current 83.6 Power factor (pf) 8iii Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399-680 CONTENTS PARAGRAPH PAGE3.6.1 Displacement power fac
16、tor (dpf).83.6.2 Distortion component of power factor.83.7 Power83.7.1 Real power.83.7.2 Reactive power93.7.3 Apparent power .93.8 Pulse .93.9 Pulsed load .93.10 Ramp load 93.11 User equipment 93.12 Emergency condition94. GENERAL REQUIREMENTS.94.1 Interface requirements94.2 Conformance test requirem
17、ents94.3 Deviations 95. DETAILED REQUIREMENTS95.1 Electric power system characteristics.95.1.1 Power interruption.115.1.2 System grounding115.1.3 Phase sequence115.1.3.1 Phase angular relations.115.1.4 Electrical power system protection115.1.4.1 Conditions not protected against 115.1.5 Electric powe
18、r system parameters .115.1.5.1 System frequency .115.1.5.1.1 60 Hz frequency transient115.1.5.2 System voltage .125.1.5.2.1 60 Hz voltage transient135.1.5.2.2 Voltage spike characteristics .165.1.5.3 Shipboard electric power system operating power factor.165.2 User equipment interface requirements16
19、5.2.1 Compatibility.165.2.2 Type of power .165.2.3 Emergency conditions .165.2.4 Grounding165.2.4.1 Insulation resistance testing175.2.5 Current unbalance175.2.6 Power factor 175.2.7 Pulsed load 175.2.8 Ramp load .175.2.9 Input current waveform.175.2.9.1 User equipment in the unacceptable range .185
20、.2.10 Protection of user equipment.18iv Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399-680 CONTENTS PARAGRAPH PAGE5.3 Test requirements .185.3.1 Voltage and frequency tolerance test.185.3.1.1 Apparatus .195.3.1.2 Procedure205.3.2 Voltag
21、e and frequency transient tolerance and recovery test 205.3.2.1 Apparatus .205.3.2.2 Procedure205.3.3 Insulation tests and ratings 215.3.4 Emergency condition test 225.3.4.1 Apparatus .225.3.4.2 Procedure225.3.5 User equipment power profile test 225.3.5.1 Apparatus .235.3.5.2 Procedure235.3.6 Curren
22、t waveform test .235.3.6.1 Apparatus .235.3.6.2 Procedure245.3.7 Voltage and frequency modulation test.245.3.7.1 Apparatus .245.3.7.2 Procedure246. NOTES 256.1 Intended use256.2 Acquisition requirements .256.3 Subject term (key word) listing 256.4 Deviation requests25 FIGURE1. Frequency modulation 3
23、2. Voltage amplitude modulation .53. Voltage transient tolerance .54. Voltage spike65. Voltage deviation factor variables76. Frequency tolerance and worst case envelopes 127. 4160 Vrms nominal voltage tolerance and worst case envelopes.138. 6600 Vrms nominal voltage tolerance and worst case envelope
24、s.149. 11000 Vrms nominal voltage tolerance and worst case envelopes.1510. 13800 Vrms nominal voltage tolerance and worst case envelopes.1611. Limit line for currents at frequencies greater than 60 Hz .1712. Voltage and current waves .21TABLETABLE I. Voltage classes 1TABLE II. Electric power system
25、characteristics at the interface10TABLE III. Voltage and frequency tolerance test19TABLE IV. Transient voltage and frequency tolerance and recovery test.20TABLE V. High-potential and BIL test voltages per voltage classes 21TABLE VI. Emergency condition test .22v Provided by IHSNot for ResaleNo repro
26、duction or networking permitted without license from IHS-,-,-MIL-STD-1399-680 CONTENTS PARAGRAPHEQUATIONEQUATION 1.3EQUATION 2.4 EQUATION 3.4 EQUATION 4.4 EQUATION 5.4 EQUATION 6.6 EQUATION 7.7 EQUATION 8.7 EQUATION 9.8 EQUATION 10.8 EQUATION 11.8 vi Provided by IHSNot for ResaleNo reproduction or n
27、etworking permitted without license from IHS-,-,-MIL-STD-1399-680 1. SCOPE 1.1 Scope. This military standard section establishes electrical interface characteristics for shipboard equipment utilizing AC electric power to ensure compatibility between user equipment and the electric power system. Char
28、acteristics of the electric power system are defined and tolerances are established, as well as requirements and test methods for ensuring compatibility of shipboard user equipment with the power system. The policies and procedures established by MIL-STD-1399 are mandatory. This section and the basi
29、c standard are to be viewed as an integral single document for use in the design of electric power systems and the design and testing of user equipment. 1.2 Classification. Shipboard power supplied from the electric power system is classified as shown in Table I. TABLE I. Voltage classes. Class Maxi
30、mum Nominal I 5.0 kVrms 4.16 kVrms II 8.7 kVrms 6.60 kVrms 11.00 kVrms III 15.0 kVrms 13.80 kVrms 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this standard. This section does not include documents cited in other sections of this s
31、tandard or recommended 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 standard, whether or not they are
32、listed. 2.2 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 contr
33、act. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-1399 - Interface Standard for Shipboard Systems (Copies of this document are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadel
34、phia, PA 19111-5094.) 2.3 Order of precedence. In the event of a conflict between the text of this document and 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
35、obtained. 3. DEFINITIONS 3.1 Electric power system. The electric power system is the electric power generation and distribution system (excluding electric propulsion systems) including generation, cables, switchboards, switches, protective devices, converters, transformers, and regulators up to the
36、user equipment interface. 3.1.1 Electrical interface. The interface is the boundary between the electric power system and the user equipment where the electric power system characteristics and the user equipment compatibility requirements apply. 3.2 Electric power system ground. Ground is a plane or
37、 surface used by the electric power system as a common reference to establish zero potential. Usually, this surface is the metallic hull of the ship. On a nonmetallic hull ship, a special ground system is installed for this purpose. 1 Provided by IHSNot for ResaleNo reproduction or networking permit
38、ted without license from IHS-,-,-MIL-STD-1399-680 3.2.1 Ungrounded electric power system. An ungrounded electric power system is a system that is intentionally not connected to the metal structure or the grounding system of the ship, except for test purposes. An ungrounded electric power system can
39、continue to perform normally if one line conductor becomes solidly grounded. However, an ungrounded system may be subject to over-voltages greater than five times nominal voltage as a result of an inductive arcing ground between one line and ground. 3.2.2 High-resistance grounded electric power syst
40、em. A high-resistance grounded electric power system is a system that employs an intentional high resistance between the electric system neutral and ground. High-resistance grounding provides the same advantages of ungrounded systems (i.e., the system can continue to perform normally with one line g
41、rounded) yet limits the severe transitory over-voltages associated with ungrounded systems. 3.2.3 Solidly-grounded electric power system. A solidly-grounded electric power system is a system in which at least one conductor or point (usually the neutral point of the transformer or generator winding)
42、is intentionally and effectively connected to system ground. A single ground fault from one line to ground will produce high fault current that should cause selective tripping of protective circuit breakers interrupting power service continuity. 3.3 Frequency. Units are Hertz (Hz). 3.3.1 Nominal fre
43、quency. Nominal frequency (fnominal) is the designated frequency in Hz. 3.3.2 Frequency tolerance. Frequency tolerance is the maximum permitted departure from nominal frequency during normal operation, excluding transients and modulation. This includes variations such as those caused by load changes
44、, environment (temperature, humidity, vibration, inclination), and drift. Tolerances are expressed in percentage of nominal frequency. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1399-680 3.3.3 Frequency modulation. Frequency modulation
45、 is the permitted periodic variation in frequency during normal operation, calculated by Equation 1 and shown in Figure 1. For purposes of definition, the periodicity of frequency modulation should be considered as not exceeding 10 seconds. 100f2ffnominalminimummaximumFrequency modulation (percent)
46、=EQUATION 1 FIGURE 1. Frequency modulation. 3.3.4 Frequency transients. A frequency transient is a sudden change in frequency that goes outside the frequency tolerance limits and returns to and remains within these limits within a specified recovery time (longer than 1 msec) after the initiation of
47、the disturbance. 3.3.4.1 Frequency transient tolerance. Frequency transient tolerance is the maximum permitted departure from nominal user frequency during transient conditions. The frequency transient tolerance is in addition to the frequency tolerance limits. 3.3.4.2 Frequency transient recovery t
48、ime. Frequency transient recovery time is the time elapsed from the instant when the frequency first goes outside the frequency tolerance limits until the instant when the frequency recovers and remains within the frequency tolerance limits. 3.4 Voltage. Units are Volts (V). Unless otherwise specifi
49、ed, voltages in this standard are root- mean-square (rms) values. Tolerances are expressed in percent of the nominal user voltage. 3.4.1 Navy high voltage. For Navy applications, high voltage is considered to be a value above 1000 Vrms. 3.4.2 Nominal user voltage. Nominal user voltage (Vnominal) is the designated voltage at the interface. 3 Provid
