32 Device Description
WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
3.6.5
Explosion Protection
Table 15:
Technical Data – Explosion Protection
Voltage supply via power jumper
contacts
U
i
= 27.3 V
Interface circuit (local bus)
U
n
= 5 V
U
m
= 253 V
Safety data electric circuit
U
o
= 4 V
I
o
= 13.46 mA
P
o
= 13.46 mW
Characteristic: linear
Reactance, if the internal
inductance (L
i
) or
capacitance (C
i
) (without
cable) of the connected
device ≤ 1 % of the
specified values
Li
Ci
Ex ia IIC
0.19 H
100 µF
Ex ia IIB
0.78 H
1000 µF
Ex ia IIA
1.57 H
1000 µF
Ex ia I
2.57 H
1000 µF
Maximum permissible
external inductance L
o
and
capacitance C
o
, which may
also be used as
concentrated capacitors
and inductors
L
o
C
o
Ex ia II C
100 mH
2.5 µF
50 mH
3 µF
20 mH
3.5 µF
10 mH
3.9 µF
0.01 mH
28 µF
0.001 mH
600 µF
Ex ia II B
100 mH
14 µF
50 mH
16 µF
20 mH
18 µF
10 mH
20 µF
0.01 mH
380 µF
0.001 mH
1000 µF
Ex ia II A
100 mH
21 µF
50 mH
23 µF
20 mH
26 µF
10 mH
29 µF
0.01 mH
720 µF
0.001 mH
1000 µF
Ex ia I
100 mH
21 µF
50 mH
23 µF
20 mH
26 µF
10 mH
29 µF
0.01 mH
720 µF
0.001 mH
1000 µF