EN 3830:2022

SLOVENSKI STANDARD
01-april-2022
Aeronavtika - Električni sistem - Analiza obremenitve
Aerospace series - Electrical system - Load analysis
Luft- und Raumfahrt - Elektrisches Bordnetz - Energiebilanz
Série aérospatiale - Réseau électrique - Bilan électrique
Ta slovenski standard je istoveten z: EN 3830:2022
ICS:
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3830
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2022
EUROPÄISCHE NORM
ICS 49.060
English Version
Aerospace series - Electrical system - Load analysis
Série aérospatiale - Réseau électrique - Bilan électrique Luft- und Raumfahrt - Elektrisches Bordnetz -
Energiebilanz
This European Standard was approved by CEN on 7 February 2020.

CEN 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
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 member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies 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, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3830:2022 E
worldwide for CEN national Members.

EN 3830:2021 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
3.1 Electrical load and power analysis . 5
3.2 Electrical system . 6
3.3 Power ratings . 8
3.4 Available power . 8
3.5 Operating time . 10
3.6 Operating conditions . 10
4 Analysis report . 12
4.1 General. 12
4.2 Introduction . 12
4.3 Electrical system functional description . 12
4.4 Power sources data . 12
4.5 Time intervals . 13
5 d.c. load analysis . 13
5.1 General. 13
5.2 Minimum parameters required for the d.c. load analysis . 13
5.3 Calculation of average power consumption . 14
5.4 d.c. load summary . 14
6 a.c. load analysis . 15
6.1 General. 15
6.2 Minimum parameters required for the a.c. load analysis . 15
6.3 Calculation of average power consumption . 16
6.4 a.c. load summary . 16
7 Power source analysis . 17
7.1 General. 17
7.2 Derating . 17
7.3 Growth capacity verification . 17
7.4 Power source utilisation . 17
8 Battery analysis . 17
8.1 General. 17
8.2 Initial charge state . 18
8.3 Determination of charge rate . 18
8.4 Remaining flight time . 18
Annex A (informative) Example of power source utilisation . 19
Bibliography . 22

EN 3830:2021 (E)
European foreword
This document (EN 3830:2022) has been prepared by the Aerospace and Defence Industries
Association of Europe — Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by August 2022, and conflicting national standards shall be withdrawn
at the latest by August 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this document: 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, Turkey and the United
Kingdom.
EN 3830:2021 (E)
Introduction
This document is applicable to a.c. and d.c. aircraft electrical power systems in accordance with
EN 2282 and has been prepared under consideration of MIL-E-7016F. It describes the methods and
procedures necessary for the preparation of an electrical load analysis.
EN 3830:2021 (E)
1 Scope
This document defines the method to establish an electrical load analysis which is used to compare the
supply capacity of an electrical power generation system with the power demand of the connected
electrical utilisation equipment.
It shall prove that the power sources are capable of supplying these loads under all electrical power
system states and aircraft operating conditions and that specified growth capacity for future
requirements is ensured.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 2282, Aerospace series — Characteristics of aircraft electrical supplies
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at https://www.electropedia.org/
3.1 Electrical load and power analysis
3.1.1
electrical load and power analysis
an electrical load and power source analysis comprises two parts:
— an analysis of the capacity of an electrical power supply system (power source analysis) ;
— an analysis of the power requirements of the utilisation equipment connected to it (load analysis)
3.1.2
power source analysis
a power source analysis determines the capacity of a power supply system to satisfy the connected
utilisation equipment under all specified aircraft conditions and provides a calculation of the
percentage load growth capacity
3.1.3
load analysis
a load analysis is essentially a compilation of the electrical loads, grouped in accordance with the
busbar arrangement of the supplying power sources, and a summation of the equipment load values
required from these during the same aircraft operating conditions as specified for the power source
analysis
EN 3830:2021 (E)
3.2 Electrical system
3.2.1
electrical system
the electrical system is an assembly constituted by the electrical power sources, utilisation equipment,
control and protection devices and all common connections of the installation
3.2.2
power supply system
a power supply system consists of one or more sources of the same nominal voltage and/or frequency,
and the corresponding power distribution system
3.2.2.1
power sources
power sources supply the power from the aircraft engines, a power conversion device, a ground power
unit or batteries
Examples of electrical power sources are:
— d.c. power sources:
• generators,
• transformer-rectifier units,
• batteries ;
— a.c. power sources:
• generators,
• transformers,
• inverters,
• frequency converters.
3.2.2.2
normal power sources
normal power sources supply electrical power to the utilisation equipment during normal system
operating conditions as defined in EN 2282
3.2.2.3
emergency power sources
emergency power sources supply electrical power to the utilisation equipment (or a specified part
thereof) in case of a failure of the normal power sources, as defined in EN 2282.
Emergency power sources may have limited (e.g. batteries) or unlimited (e.g. ram air generators)
supply duration, in general, they are limited in capacity, requiring a certain amount of load to be shed
during their operation
EN 3830:2021 (E)
3.2.3
power distribution system
a power distribution system comprises all busbars connected to one or more power sources, including
the contactors required to connect or disconnect them
3.2.3.1
busbars
a busbar is an electrical conductor used for the common supply of two or more electrical loads
connected to it. According to the intended purpose, various types of busbars may be defined, e.g.:
a) main busbar or
...