The short-circuit strength describes the function state of the system in case of a clamp being held to ground or supply voltage thus producing a short-circuit. The short-circuit strength will be defined generally for all interfaces. Furthermore, depart from this specification the short-circuit strength can be defined for each connection regarding the description of interfaces.
The description of the short-circuit strength is valid for all electrical connections (there is no reference to any electrical connection). If there are different descriptions for some electrical connections, a further description of the short-circuit strength is defined for each difference (with reference to the concerned connection).
The MSR group defined the following description of the short-circuit strength:
Figure 21: Structure of short-circuit strength
Example for content:
Representation example for short circuit strength
Denomination
|
Abbreviation
|
Min
|
Type
|
Max
|
Abs
|
Tol
|
Unit
|
|
Test voltage
|
UP
|
|
15,0
|
|
|
|
V
|
|
Test temperature
|
T
|
17
|
22
|
27
|
|
|
°C
|
|
Test duration
|
tP
|
19
|
20
|
21
|
|
|
s
|
|
Short circuit current
|
IKS
|
|
10
|
|
|
|
A
|
|
Short circuit resistance
|
RKS
|
|
0.01
|
|
|
|
W
|
|
Short circuit inductivity
|
LKS
|
|
0.01
|
|
|
|
µH
|
|
Number of tests
|
n
|
|
5
|
|
|
|
|
|
Interval between tests
|
t
|
|
10
|
|
|
|
s
|
|
Operating state : starting phase
Function state: B
Fault description: fuse cuts out
In addition to the a.m. statements there can always be given additional specifications, e.g. the test set-up.
|