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. 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. °C,
Faktor 0.
The continuous operating temperature
to 60079-0 for the material KRG is
130 °C, for Wemid 120 and for
the material °C. also parts areas not at
risk explosion.11 307
240 415 361.
Additional information about using
Weidmüller terminals intrinsically-
safe circuits can requested from the
manufacturer.
Installation
The general statements regarding
standard applications are also valid for
Ex applications. particular, the i
requirements always apply the entire
circuit, i.271282250000 2012/2013
.ATEX terminal blocks
Design for i
Terminals for intrinsically-safe circuits
(“i“) are passive components.
W
Technicalappendix
W.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.
The construction type these
terminals must comply with
EN 60079-11.
Current-carrying capacity cables and lines
Nominal currents
Cross-sect.4 452
The current-carrying capacity cables and lines the installation defined VDE 0298 part normal ambient temperature °C.75 109
50 150 130.
The blue terminals are recommended
for clear labelling and easy recognition.88 21
4 32 27.
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.
Accessories
The accessories listed can used
and included the ATEX certification. Therefore,
for use intrinsically-safe circuits,
you not need EC-standard
examination certificate.5 24 20.e.5 17.5 15.
Where necessary, end plates or
partitions must installed as
described ensure adherence to
creepage and clearance distances for
Ex applications.03 234
150 309 268.5 131
70 192 167.84 202
120 269 234.87
Verlegeart bel.84 28
6 41 35.
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.59 50
16 76 66.83 267
185 353 307.04 167
95 232 201.87.0
Installation type C
+ current-carrying wires
PVC °C
A
Umgebungstemp.05 361
300 520 452.
Accessories
The accessories listed can used and
comply with 60079-11.12 66
25 101 87. Adern PVC °C
A
1. important sure
that two the same cross-sections are
used below the rated cross-section.225 15
2. the
operating current must reduced factor 0
