Technical data for fan unit
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:
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 m3/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/m3 |
|
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.
Figure 3-6: Fan unit
