Technical data for fan unit
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Overview
The usage of a fan unit is recommended, if sufficient air flow for cooling the 1643 AM
unit cannot be guaranteed. A fan unit is required, if the unit will be mounted in an
outdoor street cabinet, because the fan unit provides sufficient air flow to cool the unit
in a thermally hostile environment such as street cabinets. Proper cooling is ensured as
long as one fan is still working. The fan unit has no air filter and can only be used
together with a DC powered unit.
The following two fan unit types can be used together with a 1643 AM unit:
• CC848841888
• CC848949657.
Specifications
A fan unit has the specifications as given in the table below.
Table 3-2 Technical specifications (fan unit)
Size (CC848841888, HxWxD) 69 mm [2.716”] x 54 mm [2.126”] x 242 mm
[9.527”]
Size (CC848949657, HxWxD) 69 mm [2.716”] x 47 mm [1.850”] x 242 mm
[9.527”]
Nominal voltage 48 VDC
Operating voltage range 36 to 60 VDC
Air flow > 1.44 m
3
/min
Static air pressure 70 Pa
Nominal power 10.8 W
Operating temp. range –20 ºC ... +70 ºC
Relative humidity 10 ... 95 % (non condensing)
Absolute humidity 1 ... 29 g/m
3
Expected life time 7 years
Fuses F1 and F2, marked on
circuit board of the Fan unit
0.5 A, 125 V, fast
Layout
A fan unit has a power and an alarm interface. The following figure shows the fan unit
with comcode number 848949657. The other fan unit looks similar.
Mechanical installation
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3-10
Alcatel-Lucent - Proprietary
See notice on first page
365-312-802R7.2
Issue 4, June 2007
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