UR8FH综合保护装置，GE通用电气
时序图下面的时序图显示了交流电压的关系直流输出和电源产生的两个系统信号的输入功率：交流故障和输入功率中断，超过电源保持时间（21毫秒最小）将产生完全功率ACFAIL和SYS RESET的关闭/通电循环。该电源是一个已安装的插入式模块在任何标准IC697机架或VME的最左侧插槽中积分器机架。
UR8FH综合保护装置有关其他安装信息，请参阅GFK-1179，安装指南符合标准，配有PLC pro 编程软件电源门通过抓取可以轻松打开电源门用右手拇指或用手指甲轻轻地把门拉向你。使用从底部拉出车门时要小心可能导致铰链或车门断裂。输入电压和接地电源输入端子板提供两个端子连接120或240 VAC或125 VDC电源2为了安全和框架，提供了额外的端子接地连接。电源输入连接应由铜AWG#16（1.33 mm2）电线制成，额定功率为75摄氏度（167华氏度）。每个端子可以接受实心或多股导线，但任何给定端子的导线应相同类型和尺寸。建议在电源上安装一个接地端子电源应连接至机架上的GND端子，并使用AWG铜线（3.31 mm2）接地，额定功率为75 C（167 F）和环形端子，以确保足够的接地。使用螺母和星形垫圈连接每根导线建议使用GND接线片。系统抗噪性必须采取两个简单的步骤来正确接地可编程控制器系统，以减少由于电噪声引起的错误可能性。1、电源上的一个接地端子必须连接到任一侧的GND端子使用AWG#12（3.3 mm2）导线连接机架。这个第二个接地端子应连接到进线安全接地。2、必须连接机架上的GND端子到一个良好的地面。
The timing diagram below shows the relationship of the ac
input power to the dc outputs and to the two system signals generated by the power supply: ACFAIL andInput power interruptions which exceed the
power supply holdup time (21 milliseconds
minimum) will result in a complete power
down/power up cycle of ACFAIL and SYSRESET.This Power Supply is a plug-in module that is installed
in the leftmost slot of any standard IC697 rack or VME
Integrator ’s rack. For additional installation information, refer to GFK-1179, Installation Guidelines for
Conformance to Standards, shipped with the PLC programming softwarePower Supply Door
The power supply door can easily be opened by grasping
the upper left corner of the door with your right thumb or
a fingernail and gently pulling the door towards you. Use
care when opening the door since pulling from the bottom
can cause the hinge or the door to break.
Input Voltage and Grounding
The power input terminal board provides two terminals for
connecting 120 or 240 VAC, or 125 VDC power Two
additional terminals are provided for safety and frame
ground connections. Power input connections should be
made with copper AWG #16 (1.33 mm2 ) wire rated for
75C (167F).
Each terminal can accept solid or stranded wires, but
the wires into any given terminal should be the same
type and size.
It is recommended that one Ground terminal on the power
supply be connected to the GND terminal on the rack and
to earth using copper AWG #12 (3.31 mm2 ) wire rated for
75C (167F) and a ring terminal to ensure adequate
grounding. Use of a nut and star washer for each wire on
the GND lug is recommended.System Noise Immunity
Two easy steps must be taken to properly ground the
programmable controller system to reduce the possibility of errors due to electrical noise.
1. One Ground terminal on the power supply must
be connected to the GND terminal on either side
of the rack using AWG #12 (3.3 mm2 ) wire. The
second Ground terminal should be connected to
incoming safety ground.
2. The GND terminal on the rack must be connected
to a good earth ground.
