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Attachment to Certificate
IECEx PTB 11.0034 Issue No.: 0
Applicant:
Pepperl + Fuchs GmbH
Lilienthalstrasse 200, 68307 Mannheim, Germany
Electrical Apparatus:
Isolation switching amplifier, type K*D*-SR*-Ex*.W.*
Electrical data
Supply circuit ................................... direct voltage 20...30 V DC
(terminals 14 and 15 resp.
Safety voltage, max:
powerrail contacts PR1 and PR2)
Um = 253 V AC
Um = 125 V DC
Fault signal output ........................... Safety voltage, max:
(power rail contact PR4)
Um = 40
V DC
Output circuits ................................. AC
(terminals 7, 8, 9 and 10, 11, 12)
U ≤ 253 V
I ≤ 2 A
S ≤ 500 VA
cosϕ ≥ 0.7
DC
U ≤ 40
I ≤ 2
P ≤ 80
V
A
W
Um = 253
V AC
U ≤126.5 V
I ≤ 4 A
Safety voltage, max.:
U ≤ 130
I ≤ 20
Input circuits .................................... type of protection Intrinsic Safety Ex ia I/IIA/IIB/IIC
(terminals 1, 2, 3 resp. 4, 5, 6)
resp. Ex ib I/IIA/IIB/IIC
maximum values per circuit:
Uo = 10.5 V
Io
= 13 mA
Po
= 34 mW
Ri
= 807.7 Ω
linear characteristic
Ci ≈ 0
Li ≈ 0
Physikalisch-Technische Bundesanstalt (PTB)
Bundesallee 100, 38116 Braunschweig, Germany
Postfach 33 45, 38023 Braunschweig, Germany
Telephone +49 531 592-0, Telefax +49 531 592-3605
Page 1 of 3
V
mA
Attachment to Certificate
IECEx PTB 11.0034 Issue No.: 0
type of protection
maximum permissible external
inductance LO
maximum permissible external
capacitance CO
I
1H
66 µF
Ex ia resp. ib
IIA
IIB
1H
0.74 H
75 µF
IIC
0.2 H
16.8 µF 2.4 µF
In the presence of concentrated capacitances and/or inductances in the intrinsically safe input circuit, the maximum permissible external capacitances and inductances
are to be taken from the following table.
type of protection
I
maximum permissible external 20 mH
inductance LO
maximum permissible external 5.3 µF
capacitance CO
Ex ia resp. ib
IIA
IIB
10 mH 7 mH
IIC
3 mH
4.6 µF 2.1 µF
615 nF
When both intrinsically safe input circuits are interconnected, the following maximum values result:
Uo = 10.5 V
Io = 26 mA
Po = 68 mW
Ri = 403.9 Ω
linear characteristic
Ci ≈ 0
Li ≈ 0
type of protection
maximum permissible external
inductance LO
maximum permissible external
capacitance CO
I
0.5 H
Ex ia resp. ib
IIA
IIB
0.38 H 0.2 H
66 µF
75 µF
IIC
54 mH
16.8 µF 2.4 µF
In the presence of concentrated capacitances and/or inductances in the interconnnected intrinsically safe input
circuits, the maximum permissible external capacitances
and inductances are to be taken from the following table.
type of protection
I
maximum permissible external 20 mH
inductance LO
maximum permissible external 5.1 µF
capacitance CO
Physikalisch-Technische Bundesanstalt (PTB)
Bundesallee 100, 38116 Braunschweig, Germany
Postfach 33 45, 38023 Braunschweig, Germany
Telephone +49 531 592-0, Telefax +49 531 592-3605
Ex ia resp. ib
IIA
IIB
10 mH 7 mH
IIC
3 mH
4.4 µF 2.1 µF
590 nF
Page 2 of 3
Attachment to Certificate
IECEx PTB 11.0034 Issue No.: 0
The intrinsically safe input circuits are safely electrically isolated from all other circuits up to
a peak value of the nominal voltage of 375 V.
Special conditions for safe use
none
Physikalisch-Technische Bundesanstalt (PTB)
Bundesallee 100, 38116 Braunschweig, Germany
Postfach 33 45, 38023 Braunschweig, Germany
Telephone +49 531 592-0, Telefax +49 531 592-3605
Page 3 of 3
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