Stahl 130665, Руководство по эксплуатации, Страница: 21 / 32

8040606300
S-BA-8040-en-02-15/06/2007
Installation
7 Control and signal station
8040
8 Installation
Mains connection:
X
The conductors must be carefully connected.
X
The conductor insulation must reach to the terminal. The conductor itself must not be
damaged (nicked) when removing the insulation.
X
Ensure that the maximum permissible conductor temperatures are not exceeded by
suitable selection of cables and means of running them.
Connecting cables to fitted devices with screw terminals:
Where fitted devices have screw terminals, 1 or 2 cables may be connected to a single
terminal. If the conductors are single-strand, both must have the same cross-section and
be of the same material.
Cables may be connected without any special preparation.
Connecting cables to fitted devices with screwless terminals contact block
connections shown as example):
Intrinsically safe circuits:
Only insulated cables whose test voltage is at least AC 500 V and whose quality is at least
H05 may be used for intrinsically safe circuits.
The diameter of individual conductors may not be less than 0.1 mm. This also applies to
the individual wires of multi-strand cables.
With regard to the insulation and separation of terminals and cables, it should be noted
that the insulation test voltage is derived from the sum of the rated operating voltages of
intrinsically safe and non-intrinsically safe circuits.
In the case of „intrinsically safe against earth“ then the insulation voltage value is at least
500 V (or double the value of the intrinsically safe circuit rated operating voltage).
In the case of „intrinsically safe against non-intrinsically safe“, then the insulation voltage
value is at least 1500 V (or double the rated operating voltage plus 1000 V).
Cables for Ex „i“ circuits must be run at least 8 mm away from the cables of other
intrinsically safe circuits.
)
To avoid moisture and dirt collecting inside the control stations, electrical
installation must be carried out in a clean and dry environment.
The enclosure may only be opend to carry out installation work and must be
carefully closed again following completion of the work.
)
When terminal sleeves are fitted, they must be gas-tight and applied with a
suitable tool.
05565E00 05886E00