ABB AC 900F学习笔记68：Freelance_Mounting_and_Installation_AC_900F_Controller-28

6.6 Switch cabinet

开关柜

 

• Low-impedance connections between the switch cabinet, mounting plate, earthing bar (PE) and shield bar must be provided
• 必须提供开关柜、安装板、接地杆 （PE） 和屏蔽棒之间的低阻抗连接
• Earth the switch cabinet doors on the sides using short and highly flexible conductors
• 开关柜门两侧使用短而灵活的导体接地
• To protect the control system against interferences, only bulbs or interference-suppressed fluorescent/LED lamps should be used in the direct vicinity of the control system for switch cabinet lighting
• 为保护控制系统免受干扰，控制系统附近应使用灯泡或抑制干扰的荧光/LED 灯作为开关柜的照明。
• If an interference immunity of 6 kV instead of 4 kV is required, the controller must be installed in a switch cabinet and operated exclusively with the door being closed.
• 如果需要6kv而不是4kv的抗干扰能力，则控制器必须安装在开关柜中，并且只能在关门的情况下操作。

6.7 Minimum distances

最小距离

• Provide for adequate distances to the switch cabinet walls, cable conduits,adjacent devices, etc. There should be a distance of 20 mm around the controller to all sides in order to ensure proper ventilation and electrical insulation.
• 提供到开关柜墙、电缆管道、相邻设备等足够的距离。在控制器周围应该由20mm的距离以确保适当的通风和电气绝缘。
• Horizontal installation is highly recommended. Vertical mounting is also possible, but involves restrictions in terms of performance due to insufficient air circulation, which causes heating of the devices.
• 强烈建议水平安装。数值安装也是可以的，但由于空气流通不足，会导致设备发热，这涉及性能方面的限制。
• When mounting the system in vertical position, mechanical stops must be provided at the top and the bottom to protect the modules against vibrations. For applications with high levels of vibration, the installation of mechanical stops on the left and right sides is also recommended for horizontal mounting in order to efficiently protect the modules against vibrations.
• 当安装系统于崔志位置时，必须在顶部和底部设置机械阻挡，保护模板免受振动。在振动震动搞得应用场合，左右两侧的机械阻挡也建议水平安装，以有效保护组件免受振动。

6.8 Reference potential

参考电位

 

• Ensure a uniform reference potential throughout the line and earth the complete electrical equipment, as far as possible.
• 尽可能确保整个线路和全套电气设备由统一的参考电位。
• Install the earth conductors in star configuration to avoid the formation of
  ground loops.

• 将接地导体安装成星形，以避免形成地面循环