EN 16603-20:2023

SLOVENSKI STANDARD
01-februar-2024
Vesoljska tehnika - Električna in elektronska
Space engineering - Electrical and electronic
Raumfahrttechnik - Elektrik und Elektronik
Ingénierie spatiale - Électrique et électronique
Ta slovenski standard je istoveten z: EN 16603-20:2023
ICS:
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
49.140 Vesoljski sistemi in operacije Space systems and
operations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 16603-20

NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2023
ICS 49.140
Supersedes EN 16603-20:2020
English version
Space engineering - Electrical and electronic
Ingénierie spatiale - Électrique et électronique Raumfahrttechnik - Elektrik und Elektronik
This European Standard was approved by CEN on 20 November 2023.

CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical
references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to
any CEN and CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and United Kingdom.

CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2023 CEN/CENELEC All rights of exploitation in any form and by any means
Ref. No. EN 16603-20:2023 E
reserved worldwide for CEN national Members and for
CENELEC Members.
Table of contents
European Foreword . 6
1 Scope . 7
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms from other standards . 9
3.2 Terms specific to the present standard . 9
3.3 Abbreviated terms . 16
3.4 Nomenclature . 18
4 General requirements . 19
4.1 Interface requirements. 19
4.1.1 Overview . 19
4.1.2 Signals interfaces . 19
4.1.3 Commands . 19
4.1.4 Telemetry . 21
4.2 Design . 21
4.2.1 Failure containment and redundancy . 21
4.2.2 Data processing . 30
4.2.3 Electrical connectors . 32
4.2.4 Testing . 33
4.2.5 Mechanical: Wired electrical connections . 34
4.2.6 Miscellaneous . 34
4.3 Verification . 35
4.3.1 Provisions . 35
4.3.2 Documentation . 35
5 Electrical power . 36
5.1 Functional description . 36
5.2 Power subsystem and budgets . 36
5.2.1 General . 36
5.2.2 Provisions . 36
5.3 Failure containment and redundancy . 37
5.4 Electrical power interfaces . 38
5.5 Power generation . 39
5.5.1 Solar cell, coverglass, SCA and PVA qualification . 39
5.5.2 Solar array specification and design . 39
5.5.3 Solar array power computation . 42
5.5.4 Solar array drive mechanisms . 44
5.6 Electrochemical Energy Storage . 44
5.6.1 Applicability . 44
5.6.2 Batteries . 45
5.6.3 Battery cell . 47
5.6.4 Battery use and storage . 47
5.6.5 Battery safety . 48
5.7 Power conditioning and control . 49
5.7.1 Applicability . 49
5.7.2 Spacecraft bus . 49
5.7.3 Battery Charge and Discharge Management . 53
5.7.4 Bus under-voltage or over-voltage . 53
5.7.5 Power converters and regulators . 54
5.7.6 Payload interaction . 55
5.8 Power distribution and protection . 56
5.8.1 General . 56
5.8.2 Harness . 59
5.9 Safety . 60
5.10 High voltage engineering . 60
5.11 Verification . 61
5.11.1 Provisions . 61
5.11.2 <> . 61
6 Electromagnetic compatibility (EMC) . 62
6.1 Overview . 62
6.2 Policy . 62
6.2.1 Overall EMC programme . 62
6.2.2 EMC control plan . 62
6.2.3 Electromagnetic compatibility advisory board (EMCAB). 63
6.3 System level . 63
6.3.1 Electromagnetic interference safety margin (EMISM) . 63
6.3.2 Inter-element EMC and EMC with environment . 64
6.3.3 Hazards of electromagnetic radiation . 64
6.3.4 Spacecraft charging protection program . 65
6.3.5 Intrasystem EMC . 66
6.3.6 Radio frequency compatibility . 66
6.3.7 Spacecraft DC magnetic field emission . 66
6.3.8 Design provisions for EMC control . 67
6.3.9 Detailed design requirements . 67
6.4 Verification . 67
6.4.1 Verification plan and report . 67
6.4.2 Safety margin demonstration for critical or EED circuit . 68
6.4.3 Detailed verification requirements . 68
7 Radio frequency systems . 69
7.1 Functional description . 69
7.2 Antennas . 70
7.2.1 General . 70
7.2.2 Antenna structure . 71
7.2.3 Antenna interfaces . 76
7.2.4 Antennas Verification . 77
7.3 RF Power . 77
7.3.1 Overview . 77
7.3.2 RF Power handling (thermal) . 78
7.3.3 Corona or Gas Discharge . 78
7.3.4 Qualification for power handling and gas discharge . 79
7.4 Passive intermodulation . 79
7.4.1 Overview . 79
7.4.2 General requirements . 79
7.4.3 Identification of potentially critical intermodulation products . 79
7.4.4 Verification . 80
7.4.5 Qualification for passive intermodulation . 80
7.5 Verification . 80
8 Pre-tailoring matrix per space product and feature types . 81
8.1 Introduction . 81
8.2 Use of the inclusive and exclusive requirement categories . 82
Annex A (normative) EMC control plan - DRD . 125
Annex B (normative) Electromagnetic effects verification plan (EMEVP) -
DRD . 128
Annex C (normative) Electromagnetic effects verification report (EMEVR) -
DRD . 131
Annex D (normative) Battery user manual - DRD . 133
Bibliography . 135

Figures
Figure 5-1: Output impedance mask (Ohm) . 51
Figure 5-2: Source and load impedance characterisation . 57
Figure 5-3: Thevenin equivalent model . 58
Figure 5-4: Norton equivalent model . 58

Tables
Table 4-1: List of rigid and non-rigid materials . 28
Table 5-1: Parameters for BOL worst and best case power calculations . 43
Table 5-2: Additional power parameters for EOL worst and best case calculations. . 44
Table 8-1: Definition of pre-tailoring matrix applicability statuses . 84
Table 8-2: Definition
...