BS ISO 14990-2:2016规定了电气设备及其附件的特殊安全要求 外部供电（电源连接，包括由 外部专用发电机），电动土方机械（EMM）。它适用于在任何条件下使用50 V-36 kV AC r.m.s.范围内车载电压的机器 频率和75 V-36 kV直流电-包括脉动直流电的任何重复频率-用于户外 使用设备内发生的电压不被视为接通- 因此，电路板电压和 在其范围内。它旨在与ISO 14990-1结合使用，后者给出了EMM的一般要求 不管它们是如何供电的。给出了自供电机器的具体要求 在ISO 14990-3中。然而，EMM也可以是自供电和外部供电 （例如，具有内置充电器和电源功能的电池供电机器），在这种情况下 ISO 14990-3也适用。交叉引用:ISO 14990- 1:2016ISO 14990-3IEC 60071-1:2006IEC 60071-1:2006/Amd。1:2010IEC 60364-5-52IEC 60445IEC 60664-1ISO 12100ISO 20474-1ISO 20474IEC 60204-1:2009IEC 60204-11IEC 60364-1IEC 60364-5-54:2011IEC 61082-1IEC 60417-DBIEC 61558-2-17IEC 62023IEC指南106购买本文件时提供的所有现行修订版均包括在内。

BS ISO 14990-2:2016 specifies the particular safety requirements for the electrical equipment and its components incorporated in externally-powered (mains-connected, including machines powered by external dedicated generators), electrically-driven earth-moving machines (EMMs).It is applicable to those machines using on-board voltages in the range of 50 V-36 kV AC r.m.s. at any frequency and 75 V-36 kV DC - including any repetition rate of pulsating DC - intended for outdoor use. Voltages occurring within devices are not considered to be on-board voltages and are thus not within its scope.It is intended to be used in conjunction with ISO 14990-1, which gives general requirements for EMMs regardless of how they are powered. Requirements specific to self-powered machines are given in ISO 14990-3. However, it is possible for an EMM to be both self-powered and externally-powered (e.g. a battery-powered machine having a built-in charger with power supply function), in which case ISO 14990-3 is also applicable.Cross References:ISO 14990-1:2016ISO 14990-3IEC 60071-1:2006IEC 60071-1:2006/Amd.1:2010IEC 60364-5-52IEC 60445IEC 60664-1ISO 12100ISO 20474-1ISO 20474IEC 60204-1:2009IEC 60204-11IEC 60364-1IEC 60364-5-54:2011IEC 61082-1IEC 60417-DBIEC 61558-2-17IEC 62023IEC Guide 106All current amendments available at time of purchase are included with the purchase of this document.