Installation
10
134784 / 8125612300
2013-01-18·BA00·III·en·05
Control Panels and Distribution Systems
8125/5, 8125/8
Intrinsically safe circuits
Insulation test voltage
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 circuits.
"Intrinsically safe against earth"
In case of "intrinsically safe against earth" then the insulation voltage value is at least 500
V (or double the value of the rated operational voltage of intrinsically safe circuits).
“Intrinsically safe against non intrinsically safe“
In case of "intrinsically safe against non-intrinsically safe", then the insulation voltage
value is at least 1500 V (double the sum of the rated operational voltage of intrinsically-
safe circuits plus 1000 V).
WARNING
Danger due to incorrectly dimensioned cables and wires!
Risk of severe injuries.
Use only insulated cables and wires whose test voltage is minimum 500 V
AC and whose minimum quality is H05.
The diameter of one conductor must not be smaller than 0.1 mm.
The diameter of individual wires of finely stranded conductors must not be
smaller than 0.1 mm.
WARNING
Danger due to incorrectly routed cables and wires!
Risk of short circuit.
Wires and cables must be at a minimum distance of 8 mm to wires and
cables of other intrinsically safe circuits.
WARNING
Danger due to incorrectly routed cables and wires!
Risk of short circuit.
An isolating plate at a distance of
(
1.5 mm to the enclosure wall must be
provided between the connection points of intrinsically safe and non-
intrinsically safe circuits.
A distance of 50 mm around an insulating (
)
1 mm thick) or earthed metal
(
)
0.45 mm thick) isolating plate must be provided between the connection
points of intrinsically safe and non-intrinsically safe circuits.
The conductors of intrinsically safe or non-intrinsically safe circuits are
protected by an earthed shield.
Summary of Contents for 8125/5
Page 2: ......
Page 38: ......
Page 39: ......
Page 40: ...134784 8125612300 2013 01 18 BA00 III de en 05 ...
