Test Procedures for Airborne Equipment

112 Pages·2016·5.09 MB·English

by  Frank Seepe

CONDUCTED RF EQUIPMENT POWER AMPLIFIERS
Test Procedures for Airborne Equipment
such as requested by
RTCA DO-160G and MIL-Std 704
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Alain Burger / Liu Xiaohua 11.2013
EMC structure
EMC
EMI EMS
interferences susceptibility
conducted disturbanced radiated conducted
radiated conducted transient RF LF power phenomena
BBRE NBRE Harmonic Flicker ESD Burst Surge
Surge Power DOW

CISPR11 CISPR 11 IEC61000 IEC61000 IEC61000
CISPR 13 CISPR 13 -3-2 -3-3 IEC61000 IEC61000 -4-5
CISPR22 CISPR22 IEC61000 IEC61000 -4-2 -4-4 -4-12 IEC61000 IEC61000 IEC61000
CISPR14 CISPR14 3-12 3-11 -4-9 -4-8 -4-10
CISPR15 CISPR15

Ind. Ind.
Asym CM
conducted radiated

IEC61000 IEC61000 IEC61000
-4-16 -4-6 -4-3

3ph Freq.
AC Harmonic V fluct DC DC
unbalance variation

IEC61000
IEC61000 IEC61000 IEC61000 IEC61000 IEC61000 IEC61000
-4-11
-4-13 -4-14 -4-17 -4-27 -4-28 -4-29
-4-34

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Aircraft EMC Standards
ABD100.1
Environmental Conditions and Tests
Requirements Procedures
for Airborne Equipment
D6-16050-4 Mil-Std 704
Electromagnetic Interference Aircraft Electric Power Characteristics
Control Requirements Mil-Std 461 Mil-Std 464
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Aircraft Electrical Power System
Ram air turbine
Transformer
Rectifier Unit
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Aircraft Electrical Power System
Module Boeing787 Boeing777 Boeing737 Airbus380 Airbus330 Airbus320
Electric Power 235Vac,115Vac, 250Vac,115Vac, 115Vac,26Vac,28 235Vac,115Vac,2 200Vac,115Vac
270Vdc,28Vdc 28Vdc Vdc 70Vdc,28Vdc (3phase),28Vdc
Engine 2 2 2 4 2 2
IDG Generators 4x250kVA VF 2x120kVA 2x90 kVA 4 ×150 kVA 2 ×115 kVA 2 ×90kVA
CF 400Hz CF 400Hz VF(370-770Hz) CF 400Hz CF 400Hz
Integrated drive generator

APU 2x225kVA 1x120kVA 90 kVA 2 ×120 kVA 115 kVA 90kVA
CF400Hz CF 400Hz
Auxiliary power unit
Ground source 3 x 90 kVA 4 connections 2 connections
90 kVA
RAT 1 ×7.5kVA 1 ×70kVA
Ram Air Turbine
TRU 4×120A 3x50A 5×300A 3x100A
1x300A APU 1x200A
Transformer rectifier unit

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RTCA DO-160G

Test Procedures for Airborne Equipment
such as requested by
RTCA DO-160G

7 wwwwww..eemmtteesstt..ccoomm
Environmental Conditions and Test Procedures for Airborne Equipment
Section Title Section Title
1 Purpose and Applicability 14 Salt Spray
2 Definitions of Terms 15 Magnetic Effect

3 Conditions of Test 16 Power Input
4 Temperature and Altitude 17 Voltage Spike Conducted
5 Temperature Variation 18 Audio frequency Conducted Susceptibility
6 Humidity 19 Induced Signal Susceptibility
7 Shock 20 RF Susceptibility (Radiated and Conducted)
8 Vibration 21 Emission of Radio Frequency Energy
9 Explosive Atmosphere 22 Lightning Induced Transient Susceptibility
10 Waterproofness 23 Lightning Direct Effects
11 Fluids Susceptibility 24 Icing
12 Sand and Dust 25 Electro Static Discharge
13 Fungus Resistance 26 Fire, Flammability
EMC
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RTCA is the Radio Technical Commission for Aeronautics

– Publishes DO 160
• Latest publication is DO 160G, issued in 8 December 2010

– Section 16 “ Power Input”
– Section 18 “ Audio Frequency Conducted Susceptibility ”

DO-160G is recognized by the International Organization for Standardization (ISO) as de facto
international standard ISO-7137.

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Table of Contents
Section 16
16.1 Purpose of the Test
16.2 Equipment Categories
16.3 Emergency Electrical System Operation
16.4 Standard Electrical Power Input Parameters
16.5 AC Power supply 16.7 Load Equipment Influence on Aircraft Electrical
16.5.1 Normal Operating Conditions (ac) Power System (ac and dc) Designation
16.5.1.1 Voltage and Frequency
16.7.1 Current harmonic Emissions from Loads (ac)
16.5.1.2 Voltage Modulation
16.7.2 Allowable Phase Unbalance (3-phase ac Input Only)
16.5.1.3 Frequency Modulation
16.7.3 DC Current Content in Steady State Operation
16.5.1.4 Momentary Power Interruption
(All ac Equipment)
16.5.1.5 Normal Transients
16.7.4 Regenerated Energy
16.5.1.6 Normal Frequency Variation
(dc, Category D Equipment Only)
16.5.2 Abnormal Operating (ac)
16.7.5 Inrush Current Requirements (ac and dc) Designation I
16.5.2.1 Abnormal Voltage and Frequency
16.7.6 Current Modulation in Steady-State Operation (ac),
16.5.2.2 Momentary Undervoltage Operation
Designation L
16.5.1.3 Abnormal Transients
16.7.7 DC Current Ripple tests (dc), Designation R
16.5.1.4 Loss of Phase Input ( 3-phase only)
16.7.8 Power Factor (All ac Equipment), Designation P
16.6 DC Power supply

16.6.1 Normal Operating Conditions (dc)
16.6.1.1 Voltage (Average Value dc)
16.6.1.2 Ripple Voltage
16.6.1.3 Momentary Power Interruption
16.6.1.4 Normal Surge Voltage dc
16.6.1.6 Normal Frequency Variation
16.6.2 Abnormal Operating (dc)
16.6.2.1 Abnormal Voltage and Frequency
16.6.2.2 Momentary Undervoltage Operation
16.6.1.3 Abnormal Transients
16.6.1.4 Loss of Phase Input ( 3-phase only)
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Section 16
Power Input (Section 16.5 )
AC DC
Electrical Power Input Parameter Limits Electrical Power Input Parameter Limits
Section 16.6.2
Section 16.5.1 Section 16.5.2 Section 16.6.1
Normal Operate Condition Abnormal Operate Condition
Normal Operate Condition Abnormal Operate Condition
Momentary Momentary Loss of Momentary Low Momentary
Voltage & Voltage Frequency Power Voltage & Under Abnormal Phase Voltage Ripple Power Voltage Voltage Under
Frequency Modulation Modulation Interruption Frequency Operation Transients Input Voltage Interruption Steady State Condition Operation
Section Section Section Section Section Section Section Section Section Section Section Section Section Section
16.5.1.1 16.5.1. 2 16.5.1. 3 16.5.1. 4 16.5.2.1 16.5.2. 2 16.5.2. 3 16.5.2. 4* 16.6.1.1 16.6.1. 2 16.6.1. 3 16.6.2.1 16.6.2. 2 16.6.2. 3
Normal Exposed
Normal
Normal N.Frequency Voltage Voltage & Surge Engine Voltage Surge
Transients Variations DC content Distortion Voltage Starting Decay time Voltage
A. Frequency
A.Surge A. Frequency Transients
Section Section Section Section Section Section Section Section
Voltage Transients A (NF) A(WF)
16.5.1. 5 16.5.1. 6 16.5.1. 7 16.5.1. 8 16.6.1. 4 16.6.1. 5 16.6.1. 6 16.6.2. 4
Section Section Section
Total Individual 16.5.2. 3.1 16.5.2.3.2 16.5.2.3.3
Surge N. Frequency Harmonic Harmonic
Voltage Transients Distortion Content
Section Section Section Section
16.5.1.5.1 16.5.1.5.2 16.5.1. 8.1.1 16.5.1. 8.1.2
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