1、 MIL-HDBK-704-2 9 April 2004 DEPARTMENT OF DEFENSE HANDBOOK GUIDANCE FOR TEST PROCEDURES FOR DEMONSTRATION OF UTILIZATION EQUIPMENT COMPLIANCE TO AIRCRAFT ELECTRICAL POWER CHARACTERISTICS SINGLE PHASE, 400 Hz, 115 VOLT ( PART 2 OF 8 PARTS ) This Handbook is for guidance only. Do not cite this docume
2、nt 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-704-2 ii FOREWORD 1. This handbook is approved for use by all Departments and Agencies of the Department of Defense. 2. This ha
3、ndbook provides guidance on test procedures for demonstration of single phase, 400 Hz, 115 volt utilization equipment to determine compliance with the applicable edition of MIL-STD-704. 3. MIL-HDBK-704-2 is Part 2 in a series of 8 Parts. Part 2 describes the test methods and procedures to demonstrat
4、e that single phase, 400 Hz, 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 addressed to Commander, Naval Air Sys
5、tems Command, Code 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 IHSNot for ResaleNo reproducti
6、on or networking permitted without license from IHS-,-,-MIL-HDBK-704-2 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. DEFINITIONS 1 3.1 Acronyms and definitions. 1
7、 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 SAC101 Load Measurements . 5 METHOD SAC102 Steady State Limits for Voltage and Frequency 9 METHOD SAC103 No Test Requir
8、ed 14 METHOD SAC104 Voltage Modulation 15 METHOD SAC105 Frequency Modulation 19 METHOD SAC106 Voltage Distortion Spectrum 24 METHOD SAC107 Total Voltage Distortion . 29 METHOD SAC108 DC Voltage Component 34 METHOD SAC109 Normal Voltage Transients . 38 METHOD SAC110 Normal Frequency Transients. 47 ME
9、THOD SAC201 Power Interrupt . 54 METHOD SAC301 Abnormal Steady State Limits for Voltage and Frequency 59 METHOD SAC302 Abnormal Voltage Transients . 64 METHOD SAC303 Abnormal Frequency Transients. 72 METHOD SAC401 Emergency Steady State Limits for Voltage and Frequency 77 METHOD SAC501 (No Test Requ
10、ired) 82 METHOD SAC601 Power Failure (Single Phase) 83 METHOD SAC602 (No Test Required) 87 METHOD SAC603 Phase Reversal (Single Phase) . 88 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-2 iv PARAGRAPH PAGE 6. NOTES . 93 6.1 Intended us
11、e 93 6.2 Single phase test numbers. 93 6.3 Subject term (keyword) listing 93 TABLE SAC-I. Summary of single phase, 400 Hz, 115 volt utilization equipment . MIL-STD-704 compliance tests 3 CONCLUDING MATERIAL 93 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
12、IHS-,-,-MIL-HDBK-704-2 1 1. SCOPE 1.1 Scope. This handbook provides, as guidance, test methods used to demonstrate that single phase, 400 Hz, 115 volt utilization equipment is compatible with the electric power characteristics of the applicable edition(s) of MIL-STD-704. This handbook is for guidanc
13、e 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 Government documents. 2.2.1 Specifications, stand
14、ards, 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 (Copies of these documents are available online at h
15、ttp:/assist. daps.dla.mil/quicksearch or http:/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-704 are applicable to this handbook.
16、 4. TEST METHODS INFORMATION 4.1 Demonstration of compatibility. This section contains the test methods which will ensure that single phase, 400 Hz, 115 volt utilization equipment is compatible with the electric power characteristics of the applicable edition(s) of MIL-STD-704, by testing the Unit U
17、nder Test (UUT) in accordance with the test procedures as described in test methods SAC 101 through SAC 603. 4.1.1 Recording performance. In table SAC-I, record the UUT information, the edition(s) of MIL-STD-704 that defined the aircraft electric power characteristics used for testing, the dates of
18、the 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 Inst
19、itute for Standards and Technology. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-2 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 liste
20、d in table SAC-I are provided in section 5 of this handbook. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-2 3 TABLE SAC-I. Summary of single phase, 400 Hz, 115 volt utilization equipment MIL-STD-704 compliance tests. UUT: Compliance t
21、o MIL-STD-704 Edition(s): Test Dates: Test Method Description Performance (Pass/Fail) Comments Normal, Aircraft Electrical Operation SAC101 Load and Current Harmonic Measurements SAC102 Steady State Limits for Voltage and Frequency SAC103 No Test, See Note #1 N/A N/A SAC104 Voltage Modulation SAC105
22、 Frequency Modulation SAC106 Voltage Distortion Spectrum SAC107 Total Voltage Distortion SAC108 DC Voltage Component SAC109 Normal Voltage Transients SAC110 Normal Frequency Transients Transfer, Aircraft Electrical Operation SAC201 Power Interrupt Abnormal, Aircraft Electrical Operation SAC301 Abnor
23、mal Limits for Voltage and Frequency SAC302 Abnormal Voltage Transients (Overvoltage/Undervoltage) SAC303 Abnormal Frequency Transients (Overfrequency/Underfrequency)Emergency, Aircraft Electrical Operation SAC401 Emergency Limits for Voltage and Frequency Starting, Aircraft Electrical Operation SAC
24、501 See Note #2 N/A N/A Power Failure, Aircraft Electrical Operation SAC601 Power Failure (Single Phase) SAC602 No Test, See Note #1 N/A N/A SAC603 Phase Reversal Note 1: There are no tests required for SAC103 and SAC602. The numbering has been arranged so that the single phase test numbers coincide
25、 with the three phase test numbers. Note 2: Starting operation conditions are usually not applicable to AC utilization equipment. No test is required for SAC501 unless specified by the equipment performance specification.Provided by IHSNot for ResaleNo reproduction or networking permitted without li
26、cense from IHS-,-,-MIL-HDBK-704-2 4 5. TEST METHODS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-2 5 METHOD SAC101 Load Measurements POWER GROUP: Single Phase, 400 Hz, 115 V AIRCRAFT ELECTRICAL OPERATING CONDITION: Normal PARAMETER: L
27、oad Measurements 1. Scope. 1.1 Purpose. This test procedure is intended to verify that single phase, 115 Volt, 400 Hz power utilization equipment utilizes only 115 Volt line-to-neutral power, does not require more power than allowed, maintains power factor within limits, and does not use half-wave r
28、ectification 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 a
29、nd 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 single
30、 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 SAC101-I. If required by the utilization equipment performance specification document, the utilization equipment current waveform must be w
31、ithin 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 SAC101-I. MIL-STD-704 limits for single phase power, power factor, rectificatio
32、n restriction, current distortion, and current spectrum for single phase 400 Hz utilization equipment. Limit 704A 704B 704C 704D 704E 704F Single Phase kVA 0.5 kVA 0.5 kVA 0.5 kVA 0.5 kVA 0.5 kVA 0.5 kVA Power Factor Figure12 MIL-STD-704A N/A N/A N/A N/A No Leading Power Factor for 100 VA Rectificat
33、ion Restriction N/A 1/N/A 1/N/A 1/N/A 1/No Half-Wave Rectification No Half-Wave RectificationCurrent Distortion See Note 2/See Note 2/See Note 2/See Note 2/See Note 2/See Note 2/Current Spectrum See Note 2/See Note 2/See Note 2/See Note 2/See Note 2/See Note 2/Provided by IHSNot for ResaleNo reprodu
34、ction or networking permitted without license from IHS-,-,-MIL-HDBK-704-2 6 1/ It is highly recommended that equipment built to MIL-STD-704 edition(s) A, B, C, or D should not use half-wave rectification. 2/ The utilization equipment performance specification document should include requirements tha
35、t 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 characteristics. These limits should take into account the
36、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 should be as follows: a. Adjustable AC power supply
37、 (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 SAC101-1. Measurements, except current, must be made
38、within 10 cm of the input power terminals of the UUT. Current measurements must be taken from the 115 Volt conductor. If the utilization equipment performance specification document imposes current waveform limits, the AC power source should be a rotating machine. 5. Compliance test. With the power
39、source off, install the UUT and the stimulation and monitoring equipment into the test setup of figure SAC101-1. 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 the nominal steady state frequency of 400 Hz.
40、 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 normal aircraft electrical conditions.
41、Record the voltage, frequency, kVA, and power factor in table SAC101-II. Confirm that the utilization equipment does not use half-wave rectification and record in table SAC101-II. Compare the kVA, power factor, and rectification with the required limits/restriction of the applicable edition(s) of MI
42、L-STD-704. If the utilization equipment performance specification imposes current waveform limits, record the total current distortion and current spectrum in the data sheet shown in table SAC101-II and compare to the limits defined in the utilization equipment performance specification document. Re
43、peat for each mode of operation of the UUT. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-2 7 Unit Under Test(UUT)AdjustableAC PowerSupplyStimulation & MonitoringEquipment(See Note 4)True RMSVoltmeterFrequencyCounterPowerMeterSpectrumA
44、nalyzerOscilloscopeAGround PlaneNGNDSee Note 110 cmANCHASSISSee Note 2CAUTIONCurrentTransformerNotes:1. Voltage measurements shall be made within 10 cm of UUT inputpower terminals.2. CAUTION: Verify suitability of power supply NEUTRAL and GROUNDconnections.3. CAUTION: Verify suitability of instrumen
45、tation inputs and/or useappropriate attenuation.4. Stimulation and Monitoring Equipment are user defined. This functionalblock shall provide appropriate inputs (stimulations) and monitor UUToutputs (e.g.: RPM, signals, data, etc.)5. If current waveform limits are imposed by the detailed performances
46、pecification, the AC power source shall be a rotating machine.Load MeasurementFigure SAC 101-1Circuit BreakerDistortionMeter(See Note 5)(See Note 3)(See Note 3) (See Note 3) (See Note 3)(See Note 3)(See Note 3)FIGURE SAC101-1. Load measurement. Provided by IHSNot for ResaleNo reproduction or network
47、ing permitted without license from IHS-,-,-MIL-HDBK-704-2 8 TABLE SAC101-II. Sample data sheet for load measurements. Parameter Measurement Unit Performance Pass/Fail Voltage VrmsN/A Frequency Hz N/A KVA kVA Power Factor pf No Half-Wave Rectification N/A Current ArmsTotal Current Distortion % Curren
48、t Distortion Current Spectrum Attach Spectrum Plot Amplitude vs. Frequency Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-704-2 9 METHOD SAC102 Steady State Limits for Voltage and Frequency POWER GROUP: Single Phase, 400 Hz, 115 V AIRCRAFT
49、ELECTRICAL OPERATING CONDITION: Normal PARAMETER: Steady State Limits for Voltage and Frequency 1. Scope. 1.1 Purpose. This test procedure is used to verify that single phase, 115 Volt, 400 Hz power utilization equipment operates and maintains specified performance when provided power with voltage and
