Page 210 - Surge-Protection-E_0.pdf

SPDs for Field Devices

DEHNpipe
• Surge arresters to be screwed onto field devices
– Parallel or series connection
– Made of corrosion-resistant stainless steel
– Arrester for protecting a second interface (data or power side)
available
• Types for Ex (i) and Ex (d) applications
– For protecting intrinsically safe measuring circuits and
bus systems Ex (i)
– Type in a flameproof enclosure Ex (d)
• Variety of approvals
– Approvals depending on the arrester:
IECEx, ATEX, FISCO, CSA Hazloc
Surge arrester for outdoor use to be screwed onto two-wire field devices. Stainless
steel, installation with cable gland up to IP 67.

The devices of the DEHNpipe family are made of corrosion-resistant stain- Ex(i) und Ex(d) versions are available for field devices in potentially explo-
less steel and can be directly screwed onto a field device. The permanently sive atmospheres. Depending on the type, the arresters can thus be installed
connected lines are connected to the terminals of the field device. Surge on field devices in intrinsically safe measuring circuits Ex(i) or on devices
protective devices for series connection and parallel connection are avail- with flameproof enclosure and are suitable for use in Ex zone 1 or 2.
able. Arresters for series connection are located directly in the cable run The surge arresters are ideally suited for installation in process environ-
which ensures energy coordination with other arresters. These arresters can ments, for example on transducers or field bus devices. 4-20 mA measuring
also be used for field devices with a single field device terminal or a single circuits or bus systems up to 30 V are typical fields of application.
cable gland. Arresters for parallel connection are attached to the spare
cable gland of the field devices or in the field bus distributor and are situ-
ated in parallel to the cable run. Due to their design, both versions have an
IP 67 degree of protection.

SPDs for Field Devices

Types for series connection. Robust type made of corrosion-resist- Metric and NPT thread. ATEX and IECEx approval.
ant stainless steel.

DPI MD
929 941 DPI MD 24 M 2S
Energy-coordinated two-stage arrester, no leakage currents to earth, for 4-20 mA interfaces with M20 x 1.5 thread (female/male).
929 941 4013364098152 04 02 05 01 173 g
158,60 € Direct, indirect or no shield earthing. Cable gland available as an accessory.
Type DPI ... MD 24 M 2S
Part No. 929 941
SPD class Q
Max. continuous operating voltage (d.c.) (UC) 34.8 V
Nominal current (IL) 0.5 A
D1 Lightning impulse current (10/350 µs) per line (Iimp) 1 kA
RD
C2 Total nominal discharge current (8/20 µs) (In) 10 kA
SHL protected
Cut-off frequency line-line (fG) 14 MHz
BK
For mounting on (field / device side) M20 x 1.5 female thread / M20 x 1.5 male thread
Approvals EAC, SIL
9
DPI ME
929 921 DPI ME 24 N A2G
1
Energy-coordinated two-stage arrester for unbalanced interfaces with /2-14 NPT thread (male/male).
929 921 4013364098169 04 02 05 01 218 g
175,90 € The earthing conductor is led through the surge arrester.
Type DPI ... ME 24 N A2G
Part No. 929 921
SPD class Q
Max. continuous operating voltage (d.c.) (UC) 34.8 V
Nominal current (IL) 0.5 A
RD BL
D1 Lightning impulse current (10/350 µs) per line (Iimp) 1 kA
BK BK C2 Total nominal discharge current (8/20 µs) (In) 10 kA
protected
1
GNYE GNYE For mounting on (field / device side) 1 /2-14 NPT male thread / /2-14 NPT male thread
Approvals UL, EAC, SIL
206 You will find detailed product information on our website Valid as of August 1, 2020