400 Hertz Medium Voltage Conversion/Distribution and Low Voltage Utilization Systems - index
400 Hertz Medium Voltage Conversion/Distribution and Low Voltage Utilization Systems - ufc_3_555_01n0001
Unified Facilities Criteria (UFC) - ufc_3_555_01n0002
Foreword - ufc_3_555_01n0003
Contents - ufc_3_555_01n0004
Chapter 1 Introduction - ufc_3_555_01n0005
Appendix A - ufc_3_555_01n0006
Military Handbook - ufc_3_555_01n0007
Abstract - ufc_3_555_01n0008
Foreword - ufc_3_555_01n0009
Electrical Engineering Criteria Manuals - ufc_3_555_01n0010
Contents - ufc_3_555_01n0011
Contents - Cont'd - ufc_3_555_01n0012
Figures - ufc_3_555_01n0013
Tables - ufc_3_555_01n0014
Tables - Cont'd - ufc_3_555_01n0015
Section 1: Introduction - ufc_3_555_01n0016
Section 2: General Considerations
Surveys
Figure 1 Typical 400-Hz Medium-Voltage System
Figure 1a Typical 400-Hz Low-Voltage System
Figure 1b Typical 400-Hz Low-Voltage System
Figure 1c Major Components of FLEDS
Figure 1d Examples of a Typical FLEDS System
Table 1 400-Hz Aircraft Loads
Consideration of System Voltage Parameters
Equipment and Cable Parameters
Table 3 Frequency Conversion Assembly Parameters
Table 4 Utilization Service Assembly Parameters
Table 5 Cable Parameters
Table 7 Maximum 400-Hertz Medium-Voltage Cable/Lengths and Loads
Section 3: Design Requirements
Medium-Voltage Distribution System Design
Figure 2 Example of Central Plant/Hangar Site Plan
Central Plant Design
Transformer
Figure 3 Typical 400-Hz Central Plant
Figure 4 Single Line Diagram of a 60-Hz Low-Voltage Switchboard
Table 9 Typical Full-Load Efficiencies
Figure 5 Single Line Diagram of a Frequency Conversion Assembly
Figure 6 Single Line Diagram of a Feeder Distribution Center
Low-Voltage Utilization System Design
Low-Voltage System Equipment
Figure 7 Single Line of a Utilization Service Assembly
Feeder Cable Connection
Section 4: Design Analysis
Table 10 400-Hz Load Calculations
Table 11 400-Hz Central Plant Sizing
Design Computations
iTable 12 Determination of Acceptable Utilization Connections
Figure 8 Voltage-Drop Calculations Single Line and Formulas
Figure 9 Voltage-Drop Calculations Using Actual Values
Figure 10 Short-Circuit Analysis
Appendix A Analysis of 400 Hertz Distribution Systems
Figure A-1 5,000-Foot Feeder Cable-Case A-1
Results - ufc_3_555_01n0055
Table A-1 Feeder-Cable Length Versus Loads (1)
Table A-1 Feeder-Cable Length Versus Loads (1) - cont'd
Figure A-3 15,000-Foot Cable - Case A3
Figure A-5 25,000-Foot Cable - Case A5
Figure A-6 30,000-Foot Cable - Case A6
Section 2: Single and Multiple Unit Loads
Table A-2 Voltage Drop on a 15,000-Foot Feeder Cable (1)
Discussion - ufc_3_555_01n0063
Figure A-8 one-Unit Steady State on Feeder - Case D1
Figure A-10 Four-Unit Steady State on Feeder - Case D3
Figure A-12 Eight-Unit Steady State on Feeder - Case D5
Figure A-14 Initial Two-Unit Load Plus Stepped One Unit Load
Figure A-16 Initial Four-Unit Load Plus Stepped One Unit Load
Section 3: Maximum Service Cable length for A 100 - Amper Unit Load
Discussion - ufc_3_555_01n0070
Table A-3 90-kVA Line Drop Compensator's Per-Unit Impedance
Results - ufc_3_555_01n0072
Figure A-17 40-Foot Service Cable - Case B1
Figure A-19 120-Foot Service Cable - Case B3
Figure A-21 200-Foot Service Cable - Case B5
Figure A-23 150-Foot Service Cable Plus Aircraft Cable - Case B12
Figure A-25 250-Foot Service Cable Plus Aircraft Cable - Case B14
Table A-4 Service Cable Length Versus Loads and Feeder Cable Lengths (1)
Table A-5 90-kVA Line Drop Compensator's Per-Unit Voltage Increase (1)
Section 4: Maximum Load Changes Allowed on the System
Motor-Starting Effects
Figure A-27 100-Ampere Load Change - Case C1
Figure A-29 200-Ampere Load Change - Case C3
Figure A-31 Initial One-Unit Load Plus Stepped Two-Unit Load
Figure A-33 Initial Three-Unit Load Plus Stepped Two-Unit Load
Figure A-35 Intial One-Unit Load Plus Induction Motor Starring
Figure A-37 Initial Three-Unit Load Plus Induction-Motor Starring
Section 5: Use of 2, 400-Volt Feeder Cable
Table A-6 Per-Unit Impedance Values Versus Feeder-Cable Lengths (1)
Section 6: Passive-Element Filters
Table A-7 Resonant Frequencies and Harmonic Voltages
Figure A-40 Three-Section Passive-Element Filter
Section 7: Surge Suppression
Protection at the 120-Volt Level
Section 8: Reliability and Abailability of 400-Hertz Systems
Appendix B Analysis of 400-Hertz Low Voltage Distribution System
Figure B-1 Simplified Circuit Diagram and Formulas
Figure B-2 Typical 400-Hz Low-Voltage Distribution System
Figure B-3 Typical 400-Hz Low-Voltage Distribution System
Figure B-4 Typical 400-Hz Voltage Drop Calculations
Figure B-4 Typical 400-Hz Voltage Drop Calculations - Cont'd
Table B-1 Effecttive A.C. Resistance and Inductance Values
Table B-2 Effective A.C. Resistance and Inductance Values
Table B-3 Effective A.C. Resistance and Inductance Values
Table B-4 Effective A.C. Resistance and Inductance Values
Table B-5 Effective A.C. Resistance and Inductance Values
Table B-6 Effective A.C. Resistance and Inductance Values
Table B-7 Effective A.C. Resistance and Inductance Values
Table B-8 Effective A.C. Resistance and Inductance Values
Table B-9 Effective A.C. Resistance and Inductance Values
Table B-10 Effective A.C. Resistance and Inductance Values
Table B-11 Effective A.C. Resistance and Inductance Values
Table B-12 Effective A.C. Resistance and Inductance Values
References - ufc_3_555_01n0114
References - Cont'd - ufc_3_555_01n0115
400 Hertz Medium Voltage Conversion/Distribution and Low Voltage Utilization Systems - ufc_3_555_01n0001
Unified Facilities Criteria (UFC) - ufc_3_555_01n0002
Foreword - ufc_3_555_01n0003
Contents - ufc_3_555_01n0004
Chapter 1 Introduction - ufc_3_555_01n0005
Appendix A - ufc_3_555_01n0006
Military Handbook - ufc_3_555_01n0007
Abstract - ufc_3_555_01n0008
Foreword - ufc_3_555_01n0009
Electrical Engineering Criteria Manuals - ufc_3_555_01n0010
Contents - ufc_3_555_01n0011
Contents - Cont'd - ufc_3_555_01n0012
Figures - ufc_3_555_01n0013
Tables - ufc_3_555_01n0014
Tables - Cont'd - ufc_3_555_01n0015
Section 1: Introduction - ufc_3_555_01n0016
Section 2: General Considerations
Surveys
Figure 1 Typical 400-Hz Medium-Voltage System
Figure 1a Typical 400-Hz Low-Voltage System
Figure 1b Typical 400-Hz Low-Voltage System
Figure 1c Major Components of FLEDS
Figure 1d Examples of a Typical FLEDS System
Table 1 400-Hz Aircraft Loads
Consideration of System Voltage Parameters
Equipment and Cable Parameters
Table 3 Frequency Conversion Assembly Parameters
Table 4 Utilization Service Assembly Parameters
Table 5 Cable Parameters
Table 7 Maximum 400-Hertz Medium-Voltage Cable/Lengths and Loads
Section 3: Design Requirements
Medium-Voltage Distribution System Design
Figure 2 Example of Central Plant/Hangar Site Plan
Central Plant Design
Transformer
Figure 3 Typical 400-Hz Central Plant
Figure 4 Single Line Diagram of a 60-Hz Low-Voltage Switchboard
Table 9 Typical Full-Load Efficiencies
Figure 5 Single Line Diagram of a Frequency Conversion Assembly
Figure 6 Single Line Diagram of a Feeder Distribution Center
Low-Voltage Utilization System Design
Low-Voltage System Equipment
Figure 7 Single Line of a Utilization Service Assembly
Feeder Cable Connection
Section 4: Design Analysis
Table 10 400-Hz Load Calculations
Table 11 400-Hz Central Plant Sizing
Design Computations
iTable 12 Determination of Acceptable Utilization Connections
Figure 8 Voltage-Drop Calculations Single Line and Formulas
Figure 9 Voltage-Drop Calculations Using Actual Values
Figure 10 Short-Circuit Analysis
Appendix A Analysis of 400 Hertz Distribution Systems
Figure A-1 5,000-Foot Feeder Cable-Case A-1
Results - ufc_3_555_01n0055
Table A-1 Feeder-Cable Length Versus Loads (1)
Table A-1 Feeder-Cable Length Versus Loads (1) - cont'd
Figure A-3 15,000-Foot Cable - Case A3
Figure A-5 25,000-Foot Cable - Case A5
Figure A-6 30,000-Foot Cable - Case A6
Section 2: Single and Multiple Unit Loads
Table A-2 Voltage Drop on a 15,000-Foot Feeder Cable (1)
Discussion - ufc_3_555_01n0063
Figure A-8 one-Unit Steady State on Feeder - Case D1
Figure A-10 Four-Unit Steady State on Feeder - Case D3
Figure A-12 Eight-Unit Steady State on Feeder - Case D5
Figure A-14 Initial Two-Unit Load Plus Stepped One Unit Load
Figure A-16 Initial Four-Unit Load Plus Stepped One Unit Load
Section 3: Maximum Service Cable length for A 100 - Amper Unit Load
Discussion - ufc_3_555_01n0070
Table A-3 90-kVA Line Drop Compensator's Per-Unit Impedance
Results - ufc_3_555_01n0072
Figure A-17 40-Foot Service Cable - Case B1
Figure A-19 120-Foot Service Cable - Case B3
Figure A-21 200-Foot Service Cable - Case B5
Figure A-23 150-Foot Service Cable Plus Aircraft Cable - Case B12
Figure A-25 250-Foot Service Cable Plus Aircraft Cable - Case B14
Table A-4 Service Cable Length Versus Loads and Feeder Cable Lengths (1)
Table A-5 90-kVA Line Drop Compensator's Per-Unit Voltage Increase (1)
Section 4: Maximum Load Changes Allowed on the System
Motor-Starting Effects
Figure A-27 100-Ampere Load Change - Case C1
Figure A-29 200-Ampere Load Change - Case C3
Figure A-31 Initial One-Unit Load Plus Stepped Two-Unit Load
Figure A-33 Initial Three-Unit Load Plus Stepped Two-Unit Load
Figure A-35 Intial One-Unit Load Plus Induction Motor Starring
Figure A-37 Initial Three-Unit Load Plus Induction-Motor Starring
Section 5: Use of 2, 400-Volt Feeder Cable
Table A-6 Per-Unit Impedance Values Versus Feeder-Cable Lengths (1)
Section 6: Passive-Element Filters
Table A-7 Resonant Frequencies and Harmonic Voltages
Figure A-40 Three-Section Passive-Element Filter
Section 7: Surge Suppression
Protection at the 120-Volt Level
Section 8: Reliability and Abailability of 400-Hertz Systems
Appendix B Analysis of 400-Hertz Low Voltage Distribution System
Figure B-1 Simplified Circuit Diagram and Formulas
Figure B-2 Typical 400-Hz Low-Voltage Distribution System
Figure B-3 Typical 400-Hz Low-Voltage Distribution System
Figure B-4 Typical 400-Hz Voltage Drop Calculations
Figure B-4 Typical 400-Hz Voltage Drop Calculations - Cont'd
Table B-1 Effecttive A.C. Resistance and Inductance Values
Table B-2 Effective A.C. Resistance and Inductance Values
Table B-3 Effective A.C. Resistance and Inductance Values
Table B-4 Effective A.C. Resistance and Inductance Values
Table B-5 Effective A.C. Resistance and Inductance Values
Table B-6 Effective A.C. Resistance and Inductance Values
Table B-7 Effective A.C. Resistance and Inductance Values
Table B-8 Effective A.C. Resistance and Inductance Values
Table B-9 Effective A.C. Resistance and Inductance Values
Table B-10 Effective A.C. Resistance and Inductance Values
Table B-11 Effective A.C. Resistance and Inductance Values
Table B-12 Effective A.C. Resistance and Inductance Values
References - ufc_3_555_01n0114
References - Cont'd - ufc_3_555_01n0115
