本规程规定了使用将安装在化工厂和石油设施中的熔断开关的低压电机控制中心的设计、制造、测试和处理要求。本规程的要求适用于工厂组装的600 V熔断开关电机控制中心。它包括对母线、外壳、电机起动器和熔断开关的要求。所有设备均适用于干燥、非机密区域或室外外壳。配电盘和调速驱动器等项目不在本规程范围内。 当这些项目被纳入电机控制中心时，买方将指定附加要求。

This Practice provides the requirements for design, fabrication, testing, and handling of low-voltage motor control centers using fused switches that will be installed in chemical plants and petroleum facilities.The requirements of this Practice apply to factory-assembled 600 V fused switch motor control centers. It includes requirements for buses, enclosures, motor starters, and fused switches. All equipment is suitable for use in dry, non-classified areas or in outdoor enclosures.Items such as panelboards and adjustable speed drives are outside the scope of this Practice. When such items are to be incorporated into the motor control center, the Buyer will specify the additional requirements.