10 | Connection
STOBER
104
02/2019 | ID 442728.05
10.3.2
CE-compliant line fuse
Every supply module in the group supplied with power must be protected against overload and
short circuit at the grid input. To do this, a safety combination consisting of overload protection
and semiconductor short-circuit protection is connected in series. A miniature circuit breaker
protects against overload and a safety fuse against short circuit.
Information
The installation of short-circuit fuses is not necessary under ideal prerequisites and ambient
conditions. However, if the application conditions pose the risk of contaminating the drive
controllers and supply modules, short-circuit fuses can protect against damage to or failure of
other devices within the DC link group.
Information
To ensure problem-free operation, always comply with the recommended trigger limits and
trigger characteristics of the fuse elements.
Information
Note that the charge current after switching on the power supply is less than the nominal input
current of the power unit I
1N,PU
.
You can use the following protective devices:
Size
Type
I
1N,PU
[A]
I
1maxPU
[A]
Overload protection
Short-circuit protection
Size 2
PS6A24
25
I
1N,PU
× 180% for
5 s;
I
1N,PU
× 150% for
30 s
EATON
Type FAZ-Z25/3
Order number
278929
Z 25 A
SIBA
Type URZ
Art. No. 50 124 06.40
gR 40 A
Size 3
PS6A34
50
I
1N,PU
× 180% for
5 s;
I
1N,PU
× 150% for
30 s
EATON
Type FAZ-Z50/3
Order number
278932
Z 50 A
SIBA
Type URZ
Order number 50 140
06.80
gR 80 A
Tab. 82: PS6 protective devices
