Power Supply Unit Selection For Each Shelf; Load Figure Calculation - Panasonic KX-TDA600 Installation Manual

1.4.3 System Capacity

Power Supply Unit Selection for Each Shelf

The PBX needs a power supply unit (PSU) suitable for its configuration. For each shelf, calculate the load
figure from the type and number of items of equipment to be connected, and then determine the type of PSU
that will be required.
Note
Regardless of the total load figure, if a shelf contains an ECSLC24 card, the PSU-L must be installed.

Load Figure Calculation

PT
Extension Card
*1
Basic CS (1 unit)
High-density CS (1 unit)
ISDN Extension
VPS (1 port)
Only the extension cards that can support SLTs count for the load figures.
*1
PSU Capacity
Each PSU supports a different load figure.
PSU Type
PSU-M
PSU-L
If the total load figure is greater than 128, you must install the PSU-L. If the total load figure is less than 128,
but you expect expansion in the future, it may be better to install the PSU-L instead of the PSU-M. There is no
harm in installing a PSU that is larger than is required for the current configuration.
40 Installation Manual
Equipment Type
KX-T7600 series DPT/KX-T7600 series DSS
console
KX-T7560/KX-T7565 DPT
Other DPT/Other DSS console
APT
IP-PT
DHLC8
SLC8
ESLC16/CSLC16/EMSLC16
ECSLC24
Maximum Load Figure
128
512
Load Figure
1
1
4
4
0
8
8
16
24
4
8
2
1