ADC PG-FLEXPLUS PLL-735, Manual

Page: 13 / 78

SCP-PLL735-010-03H
PLL-735 Lists 1, 2 and 3 January 6, 2003 3
P
OWER
C
ONSUMPTION AND
H
EAT
D
ISSIPATION
Table 2, “Power Consumption and Heat Dissipation,” on page 3 , lists the power consumption and heat dissipation
for the DICOLU, on a per slot and per COTS basis
.
Maximum Heat Dissipation
The maximum heat dissipation measures the power converted into heat that is built up within the DICOLU. It
contributes to the total heat generated in the space around the DICOLU. This is used to determine the maximum
number of fully loaded COTS per bay that do not exceed the maximum allowable power dissipation density in
Watts per square foot.
Thermal Loading Limitations
The thermal loading limitations imposed when using the DICOLU in a CEV or other enclosures are determined
by applying the DICOLU power parameters to the manufacturer's requirements for each specific housing.
Maximum Power Consumption
The maximum power consumption is the total power that the DICOLU consumes or draws from the CO battery.
This parameter is needed when the DICOLU is located remotely from its serving CO. It determines the battery
capacity required to maintain an 8-hour standby battery reserve for emergency situations.
Maximum Current Drain
The maximum current drain is the maximum current drawn from the CO battery supply when it is at its minimum
voltage (-42.5 Vdc). This determines the COTS fusing requirements.
The worst case conditions under which these parameters are measured include two 6 POTS RTs at 12.5 kft
loop length each with 4 lines off-hook and two lines each, ringing into 5 REN loads, a fully loaded COTS,
and -42.5 Vdc COTS battery voltage. All loops are assumed to be 26 AWG.
Table 2. Power Consumption and Heat Dissipation
Power COLU
COTS
19 inch 23 inch
Maximum Heat Dissipation
HDSL Line Power Off 3.5 W 42 W 56 W
HDSL Line Power On 7.0 W 84 W 112 W
Maximum Power Consumption
HDSL Line Power Off 3.5 W 42 W 56 W
HDSL Line Power On 32.5 W 390 W 520 W
Maximum Current Drain
HDSL Line Power Off 83 mA 0.99 A 1.32 A
HDSL Line Power On 765 mA 9.18 A 12.24 A