Internal Accessory
˙Al cable distribution rack:
A. The cross section size is 300mm width, 80mm height above (included). The material is Al
alloy material and anodization treatment is needed.
B. This cable rack should meet the spec of NEMA VE 1Class Designation 8A, that is, the
carrying weight should be 501bs/ft, and the support distance should not be larger than
8fts.
C. The deployment shape of cable rack in shelter is basically of H shape deployment.。
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˙Grounding copper row:
At the lower side of the cable rack and the central location of the machine room, a grounding bus copper row is installed to be used as grounding purpose of all communication equipments and all kinds of metallic materials within the machine room. From this copper row, a main line is connected to the exterior equipment grounding box to avoid the occurrence of the electric shock.
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˙Ant-electrostatic charge function:
To avoid the damage of the host machine component of communication equipment from electrostatic shock caused by electrostatic charge of human body, the floor within communication shelter should be anti-electrostatic charge floor (blanket); its spec is: imported rubber material floor not containing asbestos, meanwhile, it should possess highly flexible, dense, wear-resistant, fire-resistant and anti-chemical characteristics; and its thickness is 2mm with mean resistor value of 106~108Ω.
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˙The machine room should be equipped with a 19" transmission machine rack to be used as transmission attached point for the machine room to the exterior side; meanwhile, for the mains supply protection of communication host (BTS), a power switch is made between SMR and BTS, and FUSE Panel is also equipped, in addition, through IBS (intermediate power distribution panel), the power is distributed to each needed itemized switch.
˙The lower layer of transmission rack is attached with DDF (modularized digital distribution panel), which can be used for jumper purpose of E1 or T1 wire.
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