1、 MIL-HDBK-704-4 9 April 2004 DEPARTMENT OF DEFENSE HANDBOOK GUIDANCE FOR TEST PROCEDURES FOR DEMONSTRATION OF UTILIZATION EQUIPMENT COMPLIANCE TO AIRCRAFT ELECTRICAL POWER CHARACTERISTICS SINGLE PHASE, VARIABLE FREQUENCY, 115 VOLT ( PART 4 OF 8 PARTS ) This Handbook is for guidance only. Do not cite
2、 this document as a requirement. AMSC N/A AREA SESS NOT MEASUREMENT SENSITIVE Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-4 ii FOREWORD 1. This handbook is approved for use by all Departments and Agencies of the Department of Defense
3、. 2. This handbook provides guidance on test procedures for demonstration of single phase, variable frequency, 115 volt utilization equipment to determine compliance with the applicable edition of MIL-STD-704. 3. MIL-HDBK-704-4 is Part 4 in a series of 8 Parts. Part 4 describes the test methods and
4、procedures to demonstrate that single phase, variable frequency, 115 volt utilization equipment is compatible with the electric power characteristics of MIL-STD-704. These series of handbooks and MIL-STD-704 are companion documents. 4. Comments, suggestions, or questions on this document should be a
5、ddressed to Commander, Naval Air Systems Command, 4.1.4, Highway 547, Lakehurst, NJ 08733-5100 or email to thomas.omaranavy.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at www.dodssp.daps.mil. Provided by
6、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-4 iii CONTENTS PARAGRAPH PAGE FOREWORD . ii 1. SCOPE 1 1.1 Scope 1 2. APPLICABLE DOCUMENTS . 1 2.1 General . 1 2.2 Government documents . 1 2.2.1 Specifications, standards and handbooks . 1 3. DEFINITI
7、ONS . 1 3.1 Acronyms and definitions 1 4. TEST METHODS INFORMATION 1 4.1 Demonstration of compatibility . 1 4.1.1 Recording performance 1 4.2 Calibration of test equipment . 1 4.3 Test methods 2 5. TEST METHODS 4 METHOD SVF101 Load Measurements . 5 METHOD SVF102 Steady State Limits for Voltage and F
8、requency . 10 METHOD SVF103 (No Test Required) 16 METHOD SVF104 Voltage Modulation 17 METHOD SVF105 Frequency Modulation . 24 METHOD SVF106 Voltage Distortion Spectrum 29 METHOD SVF107 Total Voltage Distortion . 37 METHOD SVF108 DC Voltage Component . 45 METHOD SVF109 Normal Voltage Transients 48 ME
9、THOD SVF110 Normal Frequency Transients 57 METHOD SVF201 Power Interrupt . 62 METHOD SVF301 Abnormal Steady State Limits for Voltage and Frequency . 70 METHOD SVF302 Abnormal Voltage Transients 75 METHOD SVF303 Abnormal Frequency Transients 84 METHOD SVF401 Emergency Steady State Limits for Voltage
10、and Frequency . 89 METHOD SVF501 (No Tests) . 90 METHOD SVF601 Power Failure . 91 METHOD SVF602 (No Test Required) . 95 METHOD SVF603 Phase Reversal 96 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-4 iv PARAGRAPH PAGE 6. NOTES 101 6.1
11、Intended use . 101 6.2 Single phase test numbers 101 6.3 Subject term (keyword) listing 101 TABLE SVF-I. Summary of single phase, variable frequency, 115 volt utilization equipment . MIL-STD-704 compliance tests 3 CONCLUDING MATERIAL . 101 Provided by IHSNot for ResaleNo reproduction or networking p
12、ermitted without license from IHS-,-,-MIL-HDBK-704-4 1 1. SCOPE 1.1 Scope. This handbook provides, as guidance, test methods used to demonstrate that single phase, variable frequency, 115 volt utilization equipment is compatible with the electric power characteristics of the applicable edition(s) of
13、 MIL-STD-704. This handbook is for guidance only and cannot be cited as a requirement. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed below are not necessarily all of the documents referenced herein, but are those needed to understand the information provided by this handbook. 2.2 Governm
14、ent 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. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-704 DoD Interface Standard for Aircraft Electric Power Characteristics (A copy of
15、 this document is available online at http:/assist. daps.dla.mil/quicksearch or www.dodssp.daps.mil/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 3. DEFINITIONS 3.1 Acronyms and definitions. The acronyms and definitions of MIL-STD-70
16、4 are applicable to this handbook. 4. TEST METHODS INFORMATION 4.1 Demonstration of compatibility. This section contains the test methods which will ensure that single phase, variable frequency, 115 volt utilization equipment is compatible with the electric power characteristics of the applicable ed
17、ition(s) of MIL-STD-704, by testing the Unit Under Test (UUT) in accordance with the test procedures as described in test methods SVF 101 through SVF 603. 4.1.1 Recording performance. In table SVF1, record the edition(s) of MIL-STD-704 that defined the aircraft electric power characteristics used fo
18、r testing and the performance of the UUT for each of the test methods. 4.2 Calibration of test equipment. . Test equipment and accessories required for measurement in accordance with this handbook should be calibrated in accordance with an approved calibration program traceable to the National Insti
19、tute for Standards and Technology. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-4 2 The serial numbers, model, and calibration date of all test equipment should be included with the test data. 4.3 Test methods. The test methods listed
20、 in table SVF-I are provided in section 5 of this handbook. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-4 3 TABLE SVF-I. Summary of single phase, variable frequency, 115 volt utilization equipment MIL-STD-704 compliance tests. UUT: C
21、ompliance to MIL-STD-704 Edition(s): Test Dates: Test Method Description Performance (Pass/Fail) Comments Normal, Aircraft Electrical Operation SVF101 Load and Current Harmonic Measurements SVF102 Steady State Limits for Voltage and Frequency SVF103 No Test, See Note #1 N/A N/A SVF104 Voltage Modula
22、tion SVF105 Frequency Modulation SVF106 Voltage Distortion Spectrum SVF107 Total Voltage Distortion SVF108 DC Voltage Component SVF109 Normal Voltage Transients SVF110 Normal Frequency Transients Transfer, Aircraft Electrical Operation SVF201 Power Interrupt Abnormal, Aircraft Electrical Operation S
23、VF301 Abnormal Limits for Voltage and Frequency SVF302 Abnormal Voltage Transients (Overvoltage/Undervoltage) SVF303 Abnormal Frequency Transients (Overfrequency/Underfrequency)Emergency, Aircraft Electrical Operation SVF401 Emergency Limits for Voltage and Frequency Starting, Aircraft Electrical Op
24、eration SVF501 See Note #2 Power Failure, Aircraft Electrical Operation SVF601 Power Failure (Single Phase) SVF602 No Test, See Note #1 N/A N/A SVF603 Phase Reversal Note 1: There are no tests required for SVF103 and SVF602. This is done so that the single phase test numbers coincide with the three
25、phase test numbers. Note 2: Starting operation conditions are usually not applicable to AC utilization equipment. No test is required for SVF501 unless specified by the equipment performance specification. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
26、,-,-MIL-HDBK-704-4 4 5. TEST METHODS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-4 5 METHOD SVF101 Load Measurements POWER GROUP: Single Phase, Variable Frequency, 115 V AIRCRAFT ELECRICAL OPERATING CONDITION: Normal PARAMETER: Load
27、Measurements 1. Scope. 1.1 Purpose. This test procedure is used to verify that single phase, 115 Volt, variable frequency power utilization equipment utilizes only 115 Volt line-to-neutral power, does not require more power than allowed, the power factor is within limits, and does not use half-wave
28、rectification for the applicable edition(s) of MIL-STD-704. Additionally, when the utilization equipment performance specification document imposes current waveform requirements, this test procedure is used to verify that the utilization equipment current waveform is within total current distortion
29、and current spectrum (current distortion vs. frequency) limits defined in the utilization equipment performance specification document. 2. Validation criteria. The utilization equipment is considered to have passed if the utilization equipment requires less than or equal to the power limit for singl
30、e phase equipment, is within the power factor limits, and does not use half-wave rectification for the applicable edition(s) of MIL-STD-704 and as noted in table SVF101-I. If required by the utilization equipment performance specification document, the utilization equipment current waveform must be
31、within the total current distortion and current spectrum limits defined in the utilization equipment performance specification document. The utilization equipment must not suffer damage or cause an unsafe condition. TABLE SVF101-I. MIL-STD-704 limits for single phase power, power factor, rectificati
32、on restriction, current distortion, and current spectrum for single phase, variable frequency utilization equipment. Limit 704A 704B 704C 704D 704E 704F Single Phase kVA N/A N/A N/A N/A N/A 0.5 kVA Power Factor N/A N/A N/A N/A N/A No Leading Power Factor for 100 VA Rectification Restriction N/A N/A
33、N/A N/A N/A NoHalf-Wave RectificationCurrent Distortion N/A N/A N/A N/A N/A See Note 1/Current Spectrum N/A N/A N/A N/A N/A See Note 1/Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-4 6 1/. The utilization equipment performance specific
34、ation document should include requirements that reduce the likelihood of the equipment having an adverse effect on the electrical power characteristics of the aircraft. Current distortion and current spectrum limits may be imposed to minimize undesirable effects to the electrical power characteristi
35、cs. These limits should take into account the utilization equipment power draw, aircraft electrical system capacity and distribution characteristics, trade-offs with weight, volume, cost, and reliability that are specific to each type of equipment and aircraft. 3. Apparatus. The test equipment shoul
36、d be as follows: a. Adjustable AC power supply (rotating AC source for current waveform limits) b. True RMS voltmeter c. Frequency counter d. Power meter e. Spectrum Analyzer f. Distortion meter g. Current transformer h. Oscilloscope 4. Test setup. Configure the test setup as shown in figure SVF101-
37、1. Measurements, except current, must be made within 10 cm of the input power terminals of the UUT. Current measurements must be taken from the 115 Volt conductors. If the utilization equipment performance specification document imposes current waveform limits, the AC power source must be a rotating
38、 machine. 5. Compliance test. With the power source off, install the UUT and the stimulation and monitoring equipment into the test setup of figure SVF101-1. Turn on the power source and adjust the voltage to the nominal steady state voltage of 115 Vrms (line-to-neutral) and adjust the frequency to
39、a steady state frequency of 400 Hz. Close the circuit breaker, energizing the UUT. Allow sufficient time for the UUT to warm up. Conduct a performance test of the UUT according to the utilization equipment performance test procedures to verify that the UUT is providing specified performance for norm
40、al aircraft electrical conditions. Record the voltage, frequency, kVA, and power factor in table SVF101-2. Compare the kVA, power factor, and rectification with the required limits/restriction of the applicable edition(s) of MIL-STD-704. Confirm that the utilization equipment does not use half-wave
41、rectification and record in table SVF101-II. Repeat for each mode of operation of the UUT. Repeat the testing at a steady state frequency of 360 Hz, 600 Hz, and 800 Hz. If the utilization equipment performance specification document imposes current waveform limits, adjust the voltage to the nominal
42、steady state voltage of 115 Vrms (line-to-neutral) and adjust the frequency to a steady state frequency of 400 Hz. Record the total current distortion and current spectrum in the data sheet shown in table SVF101-II and compare to the limits defined in the utilization equipment performance specificat
43、ion document. Repeat for each mode of operation of the UUT. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-4 7 Unit Under Test(UUT)AdjustableAC PowerSupplyStimulation & MonitoringEquipment(See Note 4)True RMSVoltmeterFrequencyCounterPow
44、erMeterSpectrumAnalyzerOscilloscopeAGround PlaneNGNDSee Note 110 cmANCHASSISSee Note 2CAUTIONCurrentTransformerNotes:1. Voltage measurements shall be made within 10 cm of UUT input power terminals.2. CAUTION: Verify suitability of power supply NEUTRAL and GROUND connections.3. CAUTION: Verify suitab
45、ility of instrumentation inputs and/or use appropriate attenuation.4. Stimulation and Monitoring Equipment are user defined. This functional block shall provideappropriate inputs (stimulations) and monitor UUT outputs (e.g.: RPM, signals, data, etc.)5. If current waveform limits are imposed by the d
46、etail performance specification, the AC powersource shall be a rotating machine.Load and Current Distortion MeasurementFigure SVF 101-1DistortionMeter(See Note 5)(See Note 3)(See Note 3)(See Note 3)(See Note 3)(See Note 3) (See Note 3)FIGURE SVF101-1. Load and current distortion measurement. Provide
47、d by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE SVF101-II. Sample data sheet for SVF101 load measurement. Test performed at 400 Hz steady state frequency Load and Power Factor Voltage Frequency Volt-Amp Power Factor Pass/Fail Comments VrmsHz VA pf Rec
48、tification Type Pass/Fail Does not use half-wave rectification. Current Waveform Measurements Total Current Distortion Current Spectrum Pass/Fail Comments % Distortion Attach Spectrum Plot Amplitude Vs. Frequency Test performed at 360 Hz steady state frequency Load and Power Factor Voltage Frequency
49、 Volt-Amp Power Factor Pass/Fail Comments VrmsHz VA pf Test performed at 600 Hz steady state frequency Load and Power Factor Voltage Frequency Volt-Amp Power Factor Pass/Fail Comments VrmsHz VA pf % Distortion Attach Spectrum Plot Amplitude Vs. Frequency 8MIL-HDBK-704-4 Provided by IHSNot for ResaleNo reproduction or n
