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This chapter introduces the installation and cable connection of the power system. Before installation, please read
through the safety regulations, and then follow the instructions in this chapter to carry out the installation and cable
connection.
2.1 Safety Regulations
Certain components in the power system carry hazardous voltage and current. Always follow the instructions below:
1. Only trained personnel with adequate knowledge of the power system shall carry out the installation. The Safety
Precautions listed before the Contents of this manual and local safety rules in force shall be adhered to during the
installation.
2. All external circuits below -48V connected to the power system must comply with the SELV requirements defined in
IEC 60950.
3. Do not operate or maintain the power system under thunderstorm or humid weather!
4. Make sure that the power system is powered off before any operation carried out within the system.
5. The power cables should be routed and protected properly, so that the cables are kept away from the operation and
maintenance personnel.
2.2 Preparation
Unpacking inspection
The equipment should be unpacked and inspected after it arrives at the installation site. The inspection shall be done
by representatives of both the user and Vertiv Tech Co., Ltd..
To inspect the equipment, you should open the packing case, take out the packing list and check against the packing
list that the equipment is correct and complete. Make sure that the equipment is delivered intact.
Note
The rectifiers have been installed in the subrack power system at factory.
Preparing cables
The cable should be selected in accordance with relevant electric industry standards.
It is recommended to use the RVVZ cables as AC cables. The cables should reach at least +70° C temperature
durability.
Select the AC cable CSA according to Table 2-1.
Connector
AC input terminal
Note: With cable shorter than 30m, the CSA calculation should be based on the current density of 2.5A/mm
CSA value is not less than 2.5mm
The DC cable CSA depends on the current flowing through the cable, the allowable voltage drop and the load peak
capacity. The recommended load peak capacity is 1/2 to 2/3 of MCB capacity.
Chapter 2 Installation
Table 2-1 Selection of AC cable CSA
1 × 30A quick-plug terminal
2
NetSure 2100 A31-S1 Subrack Power System User Manual
Specification
Chapter 2 Installation
AC cable CSA
≤ 10mm
2
2
. The recommended
3
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