Technical data for fan unit
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Overview
The usage of a fan unit (CC848949657) is recommended, if sufficient air flow for
cooling the 1643 AMS 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. A fan unit can be
replaced from the front of the street cabinet without removing or disrupting the
operation of the 1643 AMS. The fan unit has no air filter.
Specifications
A fan unit has the specifications as given in the table below.
Table 3-4 Technical specifications (fan unit)
Size (H x W x D) 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.
Mechanical installation
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3-24
Alcatel-Lucent - Proprietary
See notice on first page
365-312-802R7.2
Issue 4, June 2007
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