Functions - Ericsson CME 20 R6.1 Reference Manual

Climate Protection
31.2

Functions

31.2.1 Cooling by Convection
Operational Conditions
This function is available when the external temperature is below safe
function high level and above 0
Description
This function will maintain the internal temperature by convection
between the cabinet surface and the external environment.
31.2.2 Climate Supervision
The internal temperature in the RBS is measured by sensors.
The following parameters are measured:
•
The internal temperature outside the normal operation.
•
The internal temperature outside the safe range.
31.2.3 Heating by Heat Conduction and Radiation
Operational Conditions
This function is available down to an external temperature
corresponding to the normal condition low limit.
Description
This heating function works with a heating element placed inside the
RBS. The heating function controls the internal temperature to above
the normal operation low limit.
31.2.4 Reliability
The cooling Climate Protection is available when the temperature is
within the specified external normal condition range. Alarm reporting is
available within the safe range.
The Heating function is available when the temperature is above the
specified external normal condition low limit and up to normal
operation low limit. Alarm reporting is available within the safe range.
184 (306)

C.
© Ericsson Radio Systems AB
— All Rights Reserved —
EN/LZT 123 2697 R5A
1998-08-13