ISO 1540:2006 pdf download.Aerospace-Characteristics of aircraft electrical systems.
4 Requirements applicable to all systems
4.1 General
Electrical power quality characteristics described in this document apply at the electrical input terminals of utilization equipment. These characteristics include both normal and abnormal operating conditions of the aircraft electrical power system during all phases of flight and ground operation. They have specifically been examined to include realistic operating conditions for a large variety of aircraft.
All of the power system equipment shotdd therefore be designed so that normal service maintenance wil ensure the retention of these specified characteristics throughout the full range of operational and environmental conditions likely to be encountered in the aircraft, or support facility, in which they are installed.
In order to provide the necessary compatibility among electric power source, distribution and utilization equipment to ensure these characteristics, constraints applicable to each of these, at the subsystem and equipment level, are required.
General requirements found in this clause are intended for incorporation Into source and utilization equipment specifications. They relate to functional aspects of the power system Interface. Detailed requirements for user equipment, Intended to be verified by test, are found In Clause 10. Detailed requirements for external and on-board electrical power source equipment are found In related standards and specifications. Typical subsystem level aspects, such as adequate control over the load balance, or the aggregate effects of nonlinear load, are not easily addressed by an Industry standard. It is the alrframer’s and/or the subsystem integrator’s responsibility to ensure that adequate measures are taken in the definition and application of these subsystems such that the essential coordination occurs. Clause 11 includes applicable background in this area.
4.1 General
Electrical power quality characteristics described in this document apply at the electrical input terminals of utilization equipment. These characteristics include both normal and abnormal operating conditions of the aircraft electrical power system during all phases of flight and ground operation. They have specifically been examined to include realistic operating conditions for a large variety of aircraft.
All of the power system equipment shotdd therefore be designed so that normal service maintenance wil ensure the retention of these specified characteristics throughout the full range of operational and environmental conditions likely to be encountered in the aircraft, or support facility, in which they are installed.
In order to provide the necessary compatibility among electric power source, distribution and utilization equipment to ensure these characteristics, constraints applicable to each of these, at the subsystem and equipment level, are required.
General requirements found in this clause are intended for incorporation Into source and utilization equipment specifications. They relate to functional aspects of the power system Interface. Detailed requirements for user equipment, Intended to be verified by test, are found In Clause 10. Detailed requirements for external and on-board electrical power source equipment are found In related standards and specifications. Typical subsystem level aspects, such as adequate control over the load balance, or the aggregate effects of nonlinear load, are not easily addressed by an Industry standard. It is the alrframer’s and/or the subsystem integrator’s responsibility to ensure that adequate measures are taken in the definition and application of these subsystems such that the essential coordination occurs. Clause 11 includes applicable background in this area.
