2726188 Phoenix Contact, 2726188 Datasheet - Page 156

• Manufacturer Part Number: 2726188
• Description: INTERBUS Bus Coupler
• Manufacturer: Phoenix Contact

IL SYS INST UM E
Power dissipation of the
electronics (P
Power dissipation of the
housing (P
Permissible working point
Examples
A-6
PHOENIX CONTACT
HOU
TOT
)
)
A 4
Please note that derating or simultaneity limitations must be taken into consideration
depending on the ambient temperature. Notes on this are provided in the terminal-specific
data sheets. The terms used in the data sheets are explained below:
The power dissipation of the electronics of a terminal is calculated according to the formula
provided in the terminal-specific data sheet. The calculated value must not exceed the
power dissipation of the housing.
The power dissipation of the housing indicates the maximum power dissipation. The
maximum power dissipation is specified in the terminal-specific data sheet.
In the permissible operating temperature range, the power dissipation of the housing can be
dependent on or independent of the ambient temperature.
If the power dissipation of the housing depends on the ambient temperature, a permissible
working point must be defined.
Depending on the power dissipation of the housing and the power dissipation of the
electronics at a certain current, the maximum temperature at which the terminal can be
operated with this current can be calculated.
Examples for calculating these values can be found in the section below.
Temperature response of the terminals
6452_en_02