Technical data
Instruction handbook bmaXX 5000
Document No.: 5.09021.19
53
of 346
3
The permitted output current I
permitted
(adjusted output rated current) is calculated accord-
ing following formula:
I
rated
= Output rated current at 40 °C and up to 1000 m,
refer to ZElectrical data of the BM53XX– as from page 69.
If k
T
.
k
H
> 1, then I
permitted
=I
rated
,
an output current higher than I
rated
is not possible.
Examples: k
T (25 °C)
= 1.2
k
H (3000 m)
= 0.8
k
T (25 °C)
* k
H (3000 m)
= 0.96 0.79 Operation permitted
I
permitted
= I
rated
.
0.96
k
T (20 °C)
= 1.27
k
H (1500 m)
= 0.95
k
T (20 °C)
* k
H (1500 m)
= 1.20 0.79 Operation permitted
I
permitted
= I
rated
k
T (40 °C)
= 1
k
H (4000 m)
= 0.7
k
T (40 °C)
* k
H (4000 m)
= 0.7 < 0.79 Operation not permitted
NOTICE!
The following condition must always be met to prevent the device of overload:
If k
T
.
k
H
> 1, the operation of the device is permitted and I
permitted
is limited to I
rated
.