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Aluminum enclosures are not allowed for mines.
The enclosure shall be suitable for the application and correctly installed.
Cable entry devices and blanking elements shall fulfill the same requirements.
Ex nA / Ex ec / Ex ic Installation
For safe installation of the 6431Axxx and 6437Axxx the following must be observed.
Marking
Hazardous Area
Zone 2 and 22
Terminal:
54,53,52,51 and
44,43,42,41
Uo: 7.2 VDC
Io: 7.3 mA
Po: 13.2 mW
Lo: 667 mH
Co: 13.5μF
Terminal:
44,43,42,41
Uo: 7.2 VDC
Io: 7.3 mA
Po: 13.2 mW
Lo: 667 mH
Co: 13.5μF
Terminal:
54,53,52,51
Uo: 7.2 VDC
Io: 7.3 mA
Po: 13.2 mW
Lo: 667 mH
Co: 13.5μF
36
Ex nA IIC T6...T4 Gc
Ex ec IIC T6...T4 Gc
Ex ic IIC T6...T4 Gc
Ex ic IIIC Dc
643xA
44
43
42
+
‐
41
54
53
52
51
643xA3
44
43
42
+
‐
41
54
53
52
+
‐
51
6437V102-ES
Unclassified Area
+
14
Test
A
Power
‐
supply
13
or
12
Zone 2
barrier
4‐20mA
11
+
14
Test
Power
A
supply
‐
13
or
Zone 2
12
barrier
4‐20mA
11
+
24
Test
A
Power
‐
supply
23
or
Zone 2
22
barrier
4‐20mA
21
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