Pre-Fuse - Bartec SILASPZ Manual

Ex p Control unit
SILAS pz
Earthing cables
Shielding

Pre-Fuse

Rev. 0
The earthing of a system satisfies protective and functional measures.
Please observe the following points:
 Earthing cables should be as short as possible.
 Avoid ground loops.
 Use ground straps with a width of at least 10 mm.
In order to ensure trouble free operation of a system, cables with the largest
possible surface area (not cross section) are important. High frequency currents
do not flow through the entire cross section of the conductor, but predominantly
on the outer skin of a conductor.
Please observe the following points:
 Always connect the shield over a large area using metal cable clips.
 Avoid placing the shield on the ground with long wires.
ATTENTION
NOTE THE RATED CURRENT OF THE RELEASE CIRCUIT (K1) AND ADD IT TO
THE FOLLOWING VALUES. THE FOLLOWING VALUES ARE ONLY FOR THE EX P
CONTROL DEVICE.
If the dimensions are too small, the Ex p control unit may be destroyed.
 Rated current (controller) + rated current release circuit (K1).
Variant
Rated current
control unit
Rated voltage
control unit
Response time
Switch-off current
Melt integral
A1-37S2-7D0001_pz_Manual_Exp-Control-Unit_20210923_0_en.docx
SILAS, DC
>= 3,15 A
>= 63 V DC
Time lag
>= 1,5 kA
12... 34 A²s
Electrical connections
SILAS, AC
>= 2 A
>= 277 V AC
Time lag
>= 1,5 kA
9,7... 14,7 A²s
Page 37 of 88