ISO 1540:2006规定了提供给安装在飞机中的电气利用设备的终端的电力的特性。它旨在支持用户设备的接口定义，这些用户设备被设计成在各种新的民用飞机应用上接受电力，例如那些通过技术标准令（TSO）认证过程认证的应用。针对单一应用或特定军事应用的设备可能不希望遵循ISO 1540:2006，因为与多应用相关的惩罚。 ISO 1540:2006还试图为这些要求的发展提供背景，这可能对那些设计和/或集成现代飞机电气系统的人有用。这种电力的输送质量是电源、配电和用户设备的组合特性的结果。虽然仅具体定义了用户设备限制，但识别了关键源和分配设备接口的后台以支持整个系统的开发。 已经考虑了各种各样的电源类型和分配参数，这可以在小型和大型运输机上找到。考虑的源包括物理旋转和静态类型，提供在飞机上或作为地面支持设备的一部分。解决的配电电压为 标称14 V、28 V和42 V直流；标称26伏交流电，400赫兹，单相；标称115/200 V rms和230/400 V rms交流电，包括单相和三相，在标称400 Hz恒定频率（CF）或包括400 Hz的可变频率（VF）范围内。

ISO 1540:2006 specifies the characteristics of electrical power supplied to the terminals of electrical utilization equipment installed in an aircraft. It is intended to support the interface definition for user equipment designed to accept electrical power on a variety of new civil aircraft applications, such as those certified via the Technical Standard Order (TSO) certification process. It might not be desirable for equipment targeted to a single application or specific military application to follow ISO 1540:2006 because of the penalties associated with multi-application. ISO 1540:2006 also attempts to provide background to the development of these requirements that may be useful to those designing and/or integrating modern aircraft electrical systems. The delivered quality of this electrical power is a result of the combined characteristics of the electrical power source, distribution and user equipment. While only user equipment restrictions are specifically defined, background to key source and distribution equipment interfaces are identified in order to support development of the overall system. A wide variety of electrical supply types and distribution parameters have been considered, as may be found on both small and large transport aircraft. Sources considered include physically rotating and static types, provided either on-aircraft, or as part of the ground support equipment. Distribution voltages addressed are

• nominal 14 V, 28 V and 42 V d.c.;
• nominal 26 V a.c., 400 Hz, one-phase;
• nominal 115/200 V rms and 230/400 V rms a.c., both one-phase and three-phase, at either a nominal 400 Hz constant frequency (CF), or over a variable frequency (VF) range which includes 400 Hz.