Chapter 2 Installation Instruction; Safety Regulations; Preparation - Emerson NetSure 211 C23 User Manual

Chapter 2 Installation Instruction

This chapter introduces installation and cable connection. Before installation, please read through safety regulations,
and then follow the instructions provided in this chapter to carry out the installation and cable connection.

2.1 Safety Regulations

Certain components in this system carry hazardous voltage and current. Always follow the instructions below:
1. Only the adequately trained personnel with satisfactory knowledge of the power system can carry out the
installation. The most recent revision of these safety rules and local safety rules in force shall be adhered to during
the installation.
2. All external circuits that are below -48V and connected to the power system must comply with the requirements of
SELV as defined in IEC 60950.
3. Make sure that the power (mains and battery) to the system is cut off before any operations can be carried out
within the system cabinet.
4. The power cabinets shall be kept locked and placed in a locked room. The key keeper should be the one
responsible for the system.
5. The wiring of the power distribution cables should be arranged carefully so that the cables are kept away from the
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 Emerson Network Power 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.
Cables
The cable should be selected in accordance with relevant industry standards.
It is recommended to use the RVVZ cables as AC cables. The cable should reach at least +70°C temperature
durability. Select the AC cable Cross-Sectional Area (CSA) according to Table 2-1.
Connector
AC connection block
The CSA of DC cable depends on the current flowing through the cable, the allowable voltage drop and load peak
current. The recommended load peak current is 1/2 to 2/3 of MCB or fuse capacity.
Select the battery cable CSA according to Table 2-2. Select the load cable CSA according to Table 2-3.
Battery fuse rated
current
30A
Note:
1. The specs are applicable at ambient temperature of 25°C.
2. The battery cable should reach at least +90°C heat durability. It is recommended to use double-insulated copper-core
flame-retardant cable as battery cable
Table 2-1 AC cable CSA selection
Specifications
OT2.5-4
Table 2-2 Battery cable CSA selection
Max. battery Min. cable
current CSA
2
20A 4mm
NetSure 211 C23 Embedded Power Supply System User Manual
Chapter 2 Installation Instruction
Max. cable length (allowable
voltage drop: 0.5V)
5m
AC cable CSA
2 2
2.5mm ~ 4mm
Max. cable Max. cable length (volt drop:
CSA 0.5V, with max. CSA)
2
6mm 8m
3