Product Specification for RBS 2302
Temperature range:
-40
C to +70
C
In addition to this requirement the RBS 2302 can be toppled without
damage. Minor damage to the cabinet that is a broken corner of a
cooling fin after a topple will not disturb the function of the RBS.
5.8.6 Climate Protection
Climate Protection Principle
The climate protection maintains the internal temperature within the
allowed range for the units in the RBS.
The climate protection of the RBS is handled by a combination of:
• Natural convection with the help of cooling fins
• Conductional heating
The fan-unit increases the air flow over the cooling fins.
Heating Capacity
The system has the capacity to heat the RBS from:
• −33
C to starting conditions within 30 minutes
• −15
C to starting conditions within 15 minutes
The above only applies if the environmental conditions are: no wind or
accumulated ice or snow on the RBS.
Ingression
The RBS fulfils the IP-55 requirements according to the standard IEC
529 and type 3R according to UL50.
5.8.7 Power Supply
Supply Voltage
The RBS can be connected to mains supply voltage with Nominal:
200 - 250 VAC ±10 % 50 Hz ±10 %
100 - 127 VAC ±10 % 60 Hz ± 8 %
200/100 - 240/120 ±10 % 60 Hz ± 8 %
The RBS will support installation with:
Single-phase (two-wire; earthed end of phase).
Single-phase (three-wire; earthed mid point).
Single-phase (three-wire; separate PE and N conductor).
According to TN, TT and IT power system.
The AC supply is fused.
68 (306)
EN/LZT 123 2697 R5A
1998-08-13
© Ericsson Radio Systems AB
— All Rights Reserved —
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