Installation Conditions - Stahl 8146/1 Serie Mode D'emploi

6.2.4 Installation Conditions

During installation – wiring inside the terminal box – sufficient distance must be
maintained between the electrical lines themselves and between electrical lines and
components. This then provides sufficient insulation against voltage punctures in the
interior.
Installation conditions for creepage distances and clearances
Distances, creepage distances and clearances
 The creepage distances and clearances between the individual components, as well as
between the components and the enclosure walls, must be sufficiently dimensioned.
The recommendation/scale are the values in standards ANSI/ISA/UL 60079-7 and
60079-11; CSA C22.2 no. 60079-7.
 Check the creepage distances of the components and comply with them according to the
specifications in the respective operating instructions.
 Observe clearances.
When doing so, use the rated operational voltage for the installed terminals as a guide.
 Observe the distance between the cover and terminal screws of the built-in components
(with the conductor connected). It must be at least the value of the required clearances.
137216 / 8146626300
2021-01-08·IO00·III·en·09
X I *
I = Minimum distance to enclosure
according to ANSI/ISA/UL 60079-7;
CSA C22.2 no. 60079-7 standards
y = Clearance
X = Factor in accordance with
ANSI/ISA/UL 60079-7;
18591E00
CSA C 22.2 no. 60079-7 depending
on conductor cross-section
X * I = Minimum distance
18590E00
18592E00
m = 50 mm/1.97 inch distance between
Ex e and Ex i terminal blocks
c = 8 mm/0.31 inch distance between
Ex e and Ex i cable lines
18593E00
Terminal Boxes
Series 8146/1, Series 8146/2
Mounting and Installation
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