6 Chapter 2 Installation Instruction
NetSure 701 A41, NetSure 501 A41, NetSure 501 A91 Subrack Power system User Manual
Table 2-3 DC load cable selection
Load route rated
current
Max. output
current
Min. cable
CSA
Max. cable length (volt
0.5V, with min. CSA)
Max. cable CSA
Max. cable length (volt drop:
0.5V, with max. CSA)
100A 80A 25mm
14m 50mm
20m
63A 50A 16mm
9m 25mm
14m
32A 25A 10mm
11m 25mm
29m
16A 12A 6mm
14m 25mm
48m
10A 8A 6mm
23m 25mm
98m
Note: The specs are applicable at ambient temperature of 25°C. If the temperature is higher than this, the CSA of the cable should
be increased
To prevent the air switching capacity is too large, the load overload does not work. Recommended the capacity of the
air switching is up to 1.5 ~ 2 times of the load peak.
The CSA of the system grounding cables should be consistent with the largest power distribution cables. The CSA
value is no less than 25mm
2
.
AC and DC power distribution interface definition see Table 2-4.
Table 2-4 AC and DC power distribution interface definition
Connector name Connector specifications Wiring instructions
AC power
distribution
AC input MCB
H type terminal, max. cable CSA 35mm
(Single-phase power input)
H type terminal, max. cable CSA 25mm
2
(Three -phase power input)
AC power line
Grounding
busbar
One M8 bolt, OT type wiring terminal, max. cable CSA 35mm
2
Connected to the
grounding bar of the
equipment room
DC power
distribution
Battery output
MCB
H type terminal, max. cable CSA 25mm
(63A and below)
H type terminal, max. cable CSA 50mm
2
(capacity above 63A)
Connected to the battery
port
Negative
output MCB
H type terminal, max. cable CSA 25mm
(63A and below)
H type terminal, max. cable CSA 50mm
2
(capacity above 63A)
Connected to the users load
port
Positive
busbar
Terminal subrack terminal
:
cable CSA ≤ 50mm
2
Connected to the users load
port
2.3 Mechanical Installation
Note
1. The cabinet or rack the subrack power supply system installed in must provide fireproof and electric protection casing, or
install in cement or other difficult to burn, at the same time and other combustible materials to keep enough distance.
2. For the convenience of maintenance, users should maintain a clearance of 800mm at the front of the power supply system.
3. Subrack cannot be installed against the wall, it must leave enough space for heat dissipation.
Installed on battery bracket
1. Fix the subrack power system to the battery bracket through the connectors with M6 bolts, as shown in Figure 2-1.