40 Chapter 6 Adding Load And Rectifier
NetSure 801 AG1 Power Supply System User Manual
Chapter 6 Adding Load And Rectifier
This chapter introduces the operation of adding loads and rectifiers.
6.1 Adding Load
Generally, the power supply system is not fully loaded at the initial operation stage. Due to the nature of telecom
loads, power interrupt is not allowed once the load is put into operation. Therefore, load adding must be a live
operation.
Before adding the DC load, a good construction design must be worked out. Select the load fuse or MCB, process
and lay the load cables, and attach SN and polarity labels to the cables. Cable connection should start from the load
end by connecting the earth cable first, and then the -48V output fuse or the MCB. The tools used must be insulated
and preventive measures against possible accidents must be worked out in advance. Refer to
for the connection of DC load cables.
6.2 Adding Rectifier
1. Remove dummy plates.
Some rectifier guide rails are idle and covered with dummy plates when the power supply system is not fully
configured. Before adding rectifier, these dummy plates must be removed so that new rectifiers can be mounted.
2. Insert the new rectifier into position along the guide rail and fix it. See 3.5.1 Installing Rectifier.
3. Close the corresponding AC input switch to feed AC power to this rectifier.
4. Repeat steps 1 to 3 to add all rectifiers.
5. Reset parameters for controller.
Note
Connection and disconnection of rectifier’s external input cables should be done by maintenance personnel, and the cables must
be connected before switching on the rectifier, and disconnected after switching off the rectifier. The rated current of the rectifier
input MCB is 20A, and its breaking capacity is 6kA.
