Additional information about using
Weidmüller terminals intrinsically-
safe circuits can requested from the
manufacturer.88 21
4 32 27.
Installation
The general statements regarding
standard applications are also valid for
Ex applications.
Certified for the European
Directive 94/9/EG ATEX –
Electrical data
The values for current-carrying capacity
as stated the catalogue are based on
an ambient temperature 40°C.5 15.12 66
25 101 87. °C,
Faktor 0.84 202
120 269 234.87 88
35 125 108. When
loaded with the rated current 10%,
the temperature the current bar of
the modular terminal may not rise more
than K. Therefore,
for use intrinsically-safe circuits,
you not need EC-standard
examination certificate.83 267
185 353 307.67 36
10 57 49.
Taking into account further safety
factor according 60079-0, we
reach the following definitions:
Temperature class Ambient temperature
T6 -50 +40 °C
T5 -50 +55 °C
The permitted nominal current must
be reduced accordingly the actual
ambient temperature higher.5 24 20.11 307
240 415 361.03 234
150 309 268.
W
Technicalappendix
W.
Accessories
The accessories listed can used
and included the ATEX certification.
Current-carrying capacity cables and lines
Nominal currents
Cross-sect.84 28
6 41 35.75 109
50 150 130. the
operating current must reduced factor 0.271282250000 2012/2013
.4 452
The current-carrying capacity cables and lines the installation defined VDE 0298 part normal ambient temperature °C.87
Verlegeart bel.5 17.87.
Clamping two conductors in
Ex applications
For the terminals from our W-series, it
is normally permitted connect two
wires per clamping position long as
this permitted accordance with the
type test according IEC 60947-7-1
or 60947-7-2.
Where necessary, end plates or
partitions must installed as
described ensure adherence to
creepage and clearance distances for
Ex applications.225 15
2.
The construction type these
terminals must comply with
EN 60079-11.05 361
300 520 452.ATEX terminal blocks
Design for i
Terminals for intrinsically-safe circuits
(“i“) are passive components.0
Installation type C
+ current-carrying wires
PVC °C
A
Umgebungstemp. Adern PVC °C
A
1.e.04 167
95 232 201. particular, the i
requirements always apply the entire
circuit, i.
The blue terminals are recommended
for clear labelling and easy recognition.5 131
70 192 167. VDE 0298 part (IEC364-5-523)
Current-carrying capacity lines
EN 60079-7
Type ignition “increased safety”
Connection terminals
Ambient temperature °C,
40 temperature rise
Current equivalent the
conductor connected
A
Ambient temperature °C
Factor 1. also parts areas not at
risk explosion.
Accessories
The accessories listed can used and
comply with 60079-11.
The continuous operating temperature
to 60079-0 for the material KRG is
130 °C, for Wemid 120 and for
the material °C.59 50
16 76 66. important sure
that two the same cross-sections are
used below the rated cross-section
