Chapter 2 Installation Instruction 13
NetSure 731 CC2, NetSure 731 C62 Series Power Supply System User Manual
Connecting grounding cable
Connect one end of the grounding cable to the user earth bar of the equipment room, and the other end to the
grounding terminal of the power system. Put the cable through the fixing holes at the top of the cabinet. Use the cable
ties to fix the modem on the top of the cabinet, as shown in Figure 2 -8. Taking NetSure 731 CC2-X3/X4 and NetSure
731 C62-X1 power system as an example, the grounding terminal is shown in Figure 2 -4. The grounding terminal and
neutral busbar of the NetSure 731 CC2-X1
、
X2 power system are located under the rectifier subrack. The grounding
terminal position of NetSure 731 C62- X2 and NetSure 731 C62-X1/X3 is same as that of the neutral line busbar.
接地端子
零线母排
Neutral line busbar
Earth terminal
Figure 2-4 Connection terminals (rear view, rear plate removed)
Connecting AC cables
1. Connect the AC input phase cables to the AC input MCBs, as shown in Figure 2-5.
The figure shows the two routes of mains input MCB configuration. NetSure 731 CC2 -X3, X4 and NetSure 731
C62-X1, X2, X3 power system only configure one route of mains input MCB, the AC input MCB is shown in Figure
2-5. The AC input MCB, AC output MCB and rectifier MCB of the NetSure 731 CC2 -X1, X2 power system are located
in the distribution room below the rectifier subrack.
非重要负载熔断器
重要负载空开
直流输出正母排
电池熔断器
交流输出空开
交流输入空开
非重要负载空开
Priority load MCB Non-priority load fuse
DC output positive busbar
Non-priority load MCB
AC input MCB
AC output MCB
Battery fuse
Figure 2-5 Connection terminals (front view)
2. If the power system is configured with AC output MCB, connect the AC out cables to the AC output MCB, and
connect the AC out neutral line to the neutral busbar, as shown in Figure 2-4 and Figure 2-5.
Connecting load cables
Note
The total capacity of the priority loads should not exceed 100A.
Connect the negative load cable to the upper terminal of the load MCB or load fuse. Connect the positive load cable
to the DC positive busbar, as shown in Figure 2-5. The specifications of the positive busbar connection screw are
¢
8mm and
¢
6mm. Please connect the load cable according to the priority load and non-priority load labels.