Bosch PRAESENSA, Руководство по установке

Страница: 45 / 194

PRAESENSA System composition | en 45
Bosch Security Systems B.V. Installation manual 2019.11 | V1.00 |
Device Device elements Power
taken from
mains [W]
Time in
quiescent
mode [h]
Time in
alarm
mode [h]
Power x
time [Wh]
Maximum
power [W]
PRA-SCL System controller
+ per active port (2) 4.2
2 x 0.5
24
24 0.5
0.5 103
25
4.2
2 x 0.5
PRA-CSLD Call station
+ per active port (2)
+ per extension PRA-CSE (3)
+ with alarm option 5.0
2 x 0.6
3 x 0.1
1.5
24
24
24
24 0.5
0.5
0.5
0.5 123
29
7
37
5.0
2 x 0.6
3 x 0.1
1.5
PRA-ES8P2S Ethernet switch
+ per active RJ45 port (2)
+ per active SFP port
+ PoE load
8.4
2 x 0.5
1.2
PRA-CSLD
24
24
-
-
0.5
0.5
-
-
206
25
-
-
8.4
2 x 0.5
-
-
PRA-AD604 Amplifier (active, idle)
Amplifier (active, low power)
Amplifier (active, full power)
+ per active port (2) 39
64
250
2 x 0.4
24
-
-
24
-
-
0.5
0.5
936
-
125
20
-
-
250
2 x 0.4
PRA-AD608 Amplifier (active, idle)
Amplifier (active, low power)
Amplifier (active, full power)
+ per active port (2) 48
88
274
2 x 0.4
24
-
-
24
-
-
0.5
0.5
1152
-
137
20
-
-
274
2 x 0.4
PRA-AD608 Amplifier (active, idle)
Amplifier (active, low power)
Amplifier (active, full power)
+ per active port (2) 48
88
274
2 x 0.4
24
-
-
24
-
-
0.5
0.5
1152
-
137
20
-
-
274
2 x 0.4
Minimum required backup power capacity of UPS [Wh]
Minimum output power capability of UPS [W] 4254
823
5.5 Heat loss calculation
To be able to calculate the required cooling capacity of a cooling system for a technical room
with equipment to stay within temperature limits of the equipment, the heat production must
be known and the maximum ambient temperature that the equipment is allowed to operate in.
The maximum ambient operating temperature of PRAESENSA rack‑mounted devices is 50
°C
(122 °F). The generated heat is the energy that is dissipated and released as heat by the
equipment in the room. Energy is power multiplied by time, so the longer a certain amount of
power is dissipated in the room the more heat is generated. The amount of energy is
expressed in joule, calories or BTU, British Thermal Units. The amount of power is expressed
in watt. By definition 1
joule = 1 watt x 1 second. Furthermore: 1 kJ = 1.055 BTU = 4.184 kcal.
The PRAESENSA system controller just dissipates some power that is taken from the power
supply. This power turns into heat. The same is true for the call stations, but they are typically
placed outside the technical room and do not contribute to heat production in the room.
PRAESENSA power amplifiers dissipate some power that is taken from the power supply, but
when announcements are made or music is played through the system, the output power of
the amplifiers is dissipated in the loudspeakers and the cabling to the loudspeakers. Because
the loudspeakers and most of the cabling is not in the technical room with the equipment, this