Doc.-ID: 150903-PT08BA-TG-ExCam IPM1145-(L)_en_rev.02.docx, page 8 of 40
2.3
Electrical parameters of the PTC heat load circuit (optional)
Reference power U
N
:
24 V DC
Nominal voltage P
N
:
20 W at type L (T
AMB
≥ -30°C)
40 W at type LL (T
AMB
≥ -60°C)
Attention!
The power consumption of the housing heating is determined by the ambient tempera-
ture or, respectively, by the PTC features
2
found in the modules’ individual operating
points. In addition, the performance of the PTC load circuit is influenced by the switching-
on characteristics of the CB06 circuit board, the load operation of the internal camera
module as well as the convection cooling on the outside (heat dissipation via housing).
Per module, the switch-on power can reach P
max
> 100W! Supply cable fine wire fuses
have to be dimensioned accordingly by the end user. A super-slow (-TT-) trigger charac-
teristic is recommended.
The typical continuous power rating at the low temperature range (T
AMB
-30°C) is
P
(-30°C)
= 12.2 W at a saturated condition
The typical continuous power rating at the artic temperature range (T
AMB
-60°C) is
P
(-60°C)
= 26.8 W at a saturated condition
The typical start-up peak at the low temperature range (1x HP05 heating element) is
I
max
> 4000mA !
The typical start-up peak at the artic temperature range (2x HP05 heating element) is
I
max
> 8000mA !
The typical in-rush-duration for I
PTC
< 1000mA per module is t
ON
≤ 45s
The typical in-rush-duration for I
PTC
< 500mA per module is t
ON
≤ 120s
(saturated range/ steady current)
2.4
Connection cable SKD02-T
Description:
Samcon System Cable Digital (type
„SKD02-T“)
for low temperature ranges, data transfer and
power supply of the camera modules M1145
and M1145-L (DIN EN 60079-14: 2014 con-
form)
Sheath color:
Yellow-green (GN), similar RAL6018
Ex d marshalling:
via the cable gland 1
3
located on the right
(according to DIN EN 60079-14:2014
[
chapter 10.6.2])
2
P
HP05
= KxAxT (K=5.5W/m
2
)
3
According to the current standard DIN EN 60079-14:2014, the dimensioning/execution of the cable gland with or without integrated
pressure barrier / compound grouting does not depend anymore on the marked gas explosion group (IIB, IIC) or the Ex d pressure
chamber volume (<2000cm
3
, ≥2000cm
3
) but solely on the length of the suitable connection cable
(<3m, ≥3m)
