Installing Short-Circuiting Copper Bars Onsite - Huawei OptiX OSN 3500 Quick Installation Manual

• Installing and routing power cables – DC power distribution box (TN51PDU)
CAUTION
When two 32 A power inputs are available in the telecommunications room, one cabinet can be configured with
only one OptiX OSN 3500 III subrack.
When four 32 A or two 63 A power inputs are available in the telecommunications room, one cabinet can be
configured with two OptiX OSN 3500 III subracks, but the power consumption of each subrack must be less than
1100 W.
NOTE
Determine whether to install short-circuiting copper bars in the power input area according to the onsite
situation: If the telecommunications room provides four current inputs, each of which is 63 A or greater, do
not install short-circuiting copper bars. If the telecommunications room provides only two current inputs,
each of which is 125 A or greater, install short-circuiting copper bars.
Power output area Power switch area
Y
a a b b
a
63 A
c
125 A (requiring short-circuiting copper bars)
• Installing short-circuiting copper bars onsite (optional)
Short-circuiting
copper bar
NOTE
If short-circuiting copper bars are required, use125 A power cables whose cross-sectional area is 35 mm
and whose length does not exceed 25 m. In addition, use M6 one-hole OT terminals with the width of less
than 15.5 mm.
If short-circuiting copper bars are not required, use M6 two-hole OT terminals for the power cables with the
cross-sectional areas of 16 mm
Power input area
X
a a b b
c
A
b
32 A (backup of the output power, which facilitates the customer to replace the
circuit breaker for capacity expansion of other equipment)
Black
M6 one-hole
OT terminal
2 2
and 25 mm .
Power switch area
a a b b
c
M6 screw
27
Power output area
Z
a a b b
B
M6
Blue
50±5 Kgf.cm
2