SPARK GAPS - DEHN (UK)
SPARK GAPS - DEHN (UK)
SPARK GAPS - DEHN (UK)
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<strong>SPARK</strong> <strong>GAPS</strong><br />
<strong>DEHN</strong> (<strong>UK</strong>) LTD<br />
DS179<strong>UK</strong>/08/10
<strong>DEHN</strong> - Isolating Spark Gaps<br />
Process plants such as refineries, oil, gas and product pipelines belong to the largest and most sophisticated building<br />
structures. They form the lifelines for regions and entire countries. Reliability, quality and efficiency are important<br />
factors for the oil and gas industry to establish themselves on the market. Therefore safe operation of all electrical<br />
and electronic installations and systems is the most important aspect.<br />
Due to the large size, location and construction as well as the use of modern measuring and control technology, the<br />
reliability of these installations is threatened by surges due to lightning or switching operations. The repair costs for<br />
replacing damaged systems are considerably higher than the costs of installing lightning protection systems and<br />
surge protective devices, not to mention the revenue lost due to operational downtime.<br />
<strong>DEHN</strong> also offers practical protection against lightning and surges for the cathodic corrosion protection system.<br />
Decades of .. experience in lightning and surge protection for petrochemical systems as well as intensive research by<br />
<strong>DEHN</strong> + SOHNE have led to the development of comprehensive protection solutions. This allows a substantial<br />
reduction of lightning damage e.g. at isolating pipe flanges, CP installations and control rooms. More importantly,<br />
consequential production failures and operational downtime due to lightning are reduced to a minimum.<br />
..<br />
<strong>DEHN</strong> + SOHNE offers ATEX and IEC/Ex approved isolating spark gap products for use in EX Zones 1, 2, 21 and 22.<br />
Latest certificates available to download on www.dehn.co.uk
EXFS 100 / EXFS 100 KU LIGHTNING EQUIPOTENTIAL BONDING<br />
For explosion-hazard areas ISOLATING <strong>SPARK</strong> <strong>GAPS</strong> (Zones 1, 2, 21, 22)<br />
ATEX-certified isolating spark gap for lightning<br />
equipotential bonding according to IEC 62305 with<br />
low sparkover voltage.<br />
EXFS 100: Isolating spark gap for use in explosion-hazard areas with plastic coating and M10 connecting nut.<br />
EXFS 100 KU: Isolating spark gap for use in explosion-hazard areas with 2m connection cable for above / underground installation.<br />
The Ex isolating spark gaps of the EXFS 100 / EXFS 100 KU product family are used<br />
when conductive installation components situated in explosion-hazard areas<br />
cannot be connected directly with each other. The spark gaps with low<br />
sparkover voltage are especially efficient for isolated installation components<br />
with little insulation resistance. No special regulations have to be observed for<br />
safe application in zone 1 with gases or zone 21 with dusts. With a maximum<br />
lightning impulse current of 100 kA (10/350 us), EXFS 100 and EXFS 100 KU meet<br />
class H according to EN 50164-3 “Lightning Protection Components (LPC) - Part 3:<br />
Requirements for isolating spark gaps”. The ATEX-certified spark gaps EXFS 100<br />
and EXFS 100 KU provide approved safety according to harmonised European<br />
standards. For connecting EXFS 100 spark gaps, prewired connecting cables with<br />
different lengths are available as accessories. Flat and angled connection<br />
brackets make it easier to connect the spark gaps to pipe flanges. EXFS 100 KU<br />
types are enclosed by a damp-proof plastic coating and are ideally suited for<br />
underground installation at insulation couplings.<br />
EXFS 100 EXFS 100 KU<br />
Lightning impulse current (10/350 us) Iimp 100 kA 100 kA<br />
Class of lightning current carrying capability acc. to EN<br />
50164-3<br />
H H<br />
Nominal discharge current (8/20 us) In 100 kA 100 kA<br />
Rated power-frequency withstand voltage (50 Hz) Uw/<br />
ac<br />
250 V 250 V<br />
100% Lightning impulse sparkover voltage Urimp ≤1.25 kV ≤1.25 kV<br />
Power-frequency sparkover voltage (50 Hz) Uaw ≤0.5 kV ≤0.5 kV<br />
Rated discharge current (50 Hz) Imax 500 A/0.5 sec. (Tu: 45 C) 500 A/0.5 sec. (Tu 45 C)<br />
(Ex) marking acc. To EN 60079 (gases) II 2G Ex d IIC T6 II 2G ExdIIC T6<br />
(Ex) marking acc. To EN 61241 (dusts) II 2D Ex tD A21 lP67 T 80 C II 2D Ex tD A21 lP67 T 80 C<br />
Operating temperature range Tu -20 C…+60 C -20 C…+60 C<br />
Degree of protection IP 67 IP 67<br />
Approvals, Certifications BVS 06 ATEX E 099, IECEx KEM<br />
09.0051...<br />
BVS 06 ATEX E 099, IECEx KEM<br />
09.0051...<br />
Length of enclosure 100 mm 123 mm<br />
Diameter of enclosure 45.5 mm 34 mm<br />
Enclosure material Plastic coating Plastic coating; water-proof coating<br />
Connection of enclosure Thread nut M10, 2x M10x25 mm,<br />
2 x spring washer<br />
NYY-J-1 x 25 mm ,<br />
approx. 2 m long<br />
Type EXFS 100 EXFS 100 KU<br />
Part No. 923 100 923 101<br />
Packing unit 1 pc(s) 1 pc(s)<br />
For indirect connection/earthing of functionally isolated installation components when<br />
being affected by lightning.<br />
Device for lightning equipotential bonding according to IEC 62305 in explosion-hazard<br />
areas (1, 2, 21, 22).<br />
For bridging insulation pieces, insulation flanges etc. in cathodically corrosion-protected<br />
pipe sections.<br />
For safe installation in explosion protected zone 1, 2, 21, 22 (Gas, Dust according to ATEX<br />
Directives)<br />
Particularly low sparkover voltage.<br />
Especially high a.c. current withstand capability. 100 kA (according to EN 50164-3)<br />
Extremely heavy duty device IP 67.<br />
Installation of EXFS 100 EXFS 100 Installation of EXFS 100 KU<br />
EXFS 100 KU<br />
o<br />
o<br />
o<br />
o<br />
2<br />
o<br />
o<br />
Accessory Parts for EXFS 100 / EXFS 100 KU<br />
EXFS 100: Connection cable, Cu 25 mm<br />
Connecting cable for EXFS 100;2 cable lugs 010.5<br />
mm hexagon screw and nut (M10), StSt spring &<br />
washer<br />
Type Cable lug<br />
material<br />
Cross<br />
section<br />
Cable<br />
length<br />
Pair of angled connection brackets - IF 1 -<br />
Pair of angled connection brackets for EXFS ..;<br />
diameter corresponds to bolt diameter of the<br />
bolted flange joint (d1 up to max. 60mm, please<br />
indicate the diameter required when placing your<br />
order)<br />
Pair of flat connection brackets - IF 3 -<br />
Pair of flat connection brackets for EXFS ..;<br />
diameter corresponds to bolt diameter of the<br />
bolted flange joint (d1 up to max. 60mm, please<br />
indicate the diameter required when placing your<br />
order)<br />
2<br />
Pu<br />
pc(s)<br />
Part No<br />
2<br />
AL EXFS L100 KS Cu/gal Sn 25mm 100mm 1 *923 025<br />
2<br />
AL EXFS L200 KS Cu/gal Sn 25mm 200mm 1 *923 035<br />
2<br />
AL EXFS L300 KS Cu/gal Sn 25mm 300mm 1 *923 045<br />
Type Material Pu pc(s). Part No.<br />
IF1 St/t/Zn 1<br />
*923 011<br />
Type Material Pu pc(s). Part No.<br />
IF3 St/t/Zn 1<br />
*923 016<br />
*None sparking approved accessories eliminate the possibility of<br />
sparking in explosion-hazard areas
EXFS L / EXFS KU LIGHTNING EQUIPOTENTIAL BONDING<br />
For use in explosion-hazard areas ISOLATING <strong>SPARK</strong> <strong>GAPS</strong> (Zones 2)<br />
ATEX-certified isolating spark gap for lightning equipotential<br />
bonding according to IEC 62305, approved device with flexible<br />
conductor connection.<br />
EXFS L..: Isolating spark gap for use in explosion-hazard areas with flexible connecting cable<br />
EXFS KU: Isolating spark gap for use in explosion-hazard areas with 1.5m connecting cable for above/underground installation<br />
Installation of EXFS L... EXFS L... EXFS KU<br />
EXFS L100,200,300 EXFS KU<br />
Lightning impulse current (10/350 us) Iimp 50 kA 50 kA<br />
Class of lightning current carrying capability acc. to EN<br />
50164-3<br />
N N<br />
Nominal discharge current (8/20 us) Iin 100 kA 100 kA<br />
Rated power-frequency withstand voltage (50 Hz) Uw/<br />
ac<br />
300 V 300 V<br />
100% Lightning impulse sparkover voltage Urimp ≤2.5 kV ≤2.5 kV<br />
Power-frequency sparkover voltage (50 Hz) Uaw ≤1.2 kV ≤1.2 kV<br />
Type of protection acc. EN 50014, EN 50021 II 3 G EEx nC II T4 II 3 G EEx nC II T4<br />
Operating temperature range Tu -20 C…+80 C -20 C…+80 C<br />
Degree of protection IP 54 IP 67<br />
Approvals, Certifications ZELM 03 ATEX 3192X ZELM 03 ATEX 3192X<br />
Length of enclosure 90 mm 90 mm<br />
Diameter of enclosure 63 mm 63 mm<br />
Enclosure material Zinc diecasting, plastic Zinc diecasting, plastic<br />
Connection cable<br />
2<br />
H01N2-D 25mm with cable lug and<br />
screw/nut (M10)<br />
2<br />
NYY-J-1x25 mm<br />
Cable length* 100, 200, 300 mm * 2 x approx. 1500mm<br />
Suitable for flange size 20-130, 120-230, 220-320 mm<br />
Type EXFS L100, 200, 300 EXFS KU<br />
Part No. 923 060, 923 061, 923 062 923 019<br />
Packing unit 1 pc(s) 1 pc(s)<br />
*Cable length for EXFS L100 - 100mm, L200 - 200mm, L300 - 300mm. Custom lengths also available.<br />
For indirect connection/earthing of functionally isolated installation<br />
components when being affected by lightning.<br />
Device for lightning equipotential bonding acc. to IEC 62305 in<br />
explosion-hazard areas (Zone 2).<br />
According to “ATEX Directive” 94/9/EC.<br />
Corrosion-resistant zinc diecasting enclosure with plastic cover and<br />
flexible conductor connection.<br />
For bridging insulating pieces, insulation flanges etc. in cathodically<br />
corrosion protected pipe sections.<br />
Heavy-duty device.<br />
Ex isolating spark gaps of the EXFS L / EXFS KU product family are used when the direct interconnection of electrically conductive<br />
installation components in Ex areas is not acceptable. As, for example, in the case of cathodically corrosion protected pipeline sections.<br />
ATEX-certified EXFS L and EXFS KU spark gaps provide approved and tested safety in accordance with harmonised European standards.<br />
The arc-resistant tungsten-copper electrodes ensure a long service life of the Ex spark gaps. The approved type EXFS L with flexible<br />
conductor connection quickly adapts to any application environment. The prewired spark gaps provide connecting cables with different<br />
lengths with cable lugs, screws and M10 nut. The flat or angled connection brackets allow for easy connection of the spark gap to<br />
pipeline flanges. The EXFS KU type is enclosed in a damp-proof PVC enclosure and is ideal for underground installation at insulating<br />
couplings.<br />
o<br />
o<br />
Accessory Parts for EXFS L / EXFS KU<br />
Pair of angled connection brackets - IF 1 -<br />
Pair of angled connection brackets for EXFS …;<br />
diameter corresponds to bolt diameter of the<br />
bolted flange joint (d1 up to max. 60 mm, please<br />
indicate the diameter required when placing your<br />
order)<br />
Type Material Pu pc(s). Part No.<br />
IF1 St/t/Zn 1<br />
*923 011<br />
Pair of flat connection brackets - IF 3 -<br />
Pair of flat connection brackets for EXFS ..; diameter<br />
corresponds to bolt diameter of the bolted<br />
flange joint (d1 up to max. 60mm, please indicate<br />
the diameter required when placing your order)<br />
Type Material Pu pc(s). Part No.<br />
IF3 St/t/Zn 1<br />
*923 016<br />
*None sparking approved accessories eliminate the possibility of<br />
sparking in explosion-hazard areas
1<br />
2<br />
3<br />
LIGHTNING AND SURGE PROTECTION FOR PIPELINE STATIONS<br />
<strong>DEHN</strong>ventil M TNC 255 (FM)<br />
951 300 (305)<br />
<strong>DEHN</strong>ventil M TNS 255 (FM)<br />
951 400 (405)<br />
<strong>DEHN</strong>ventil M TT 255 (FM)<br />
951 310 (315)<br />
Multipole modular lightning current<br />
and surge arrester for protection of<br />
the power supply in low voltage<br />
distribution systems<br />
BLITZDUCTOR BXT ML4 BD 180 + BXT BAS.<br />
920 347 + 920 300<br />
Universal, pluggable lightning current and<br />
surge arrester for telecommunication and<br />
telecontrol systems with integrated LifeCheck<br />
BLITZDUCTOR BXT ML4 BD EX 24 + BXT BAS<br />
EX. 920 381 + 920 301<br />
Universal, pluggable surge arrester for 2<br />
isolated intrinsically safe measuring circuits<br />
with integrated LifeCheck<br />
EXFS 100. 923 100<br />
ATEX certified spark gap for use<br />
in hazardous areas (Zone 1, 2, 21,<br />
22) for protection against over<br />
voltages and lightning currents<br />
<strong>DEHN</strong>pipe DPI MD EX 24 M 2.<br />
929 960<br />
Surge arrester for protection of<br />
intrinsically safe measuring<br />
circuits made of stainless steel for<br />
outdoor areas (IP 67) for screwing<br />
into 2-wire filed devices<br />
Pipe clamps for hazardous areas.<br />
e.g. 540 803<br />
Pipe clamp for connecting pipes of<br />
different materials and diameters which<br />
allows for discharging lightning currents<br />
in hazardous areas (Zone 1, 2, 21, 22)<br />
without ignition sparks<br />
Schematic diagram: Lightning and Surge protection for a pipeline station<br />
For more information refer to www.dehn.co.uk or the <strong>DEHN</strong> <strong>UK</strong> main catalogue<br />
4<br />
5<br />
6
1 BLITZDUCTOR VT KKS BVT KKS ALD 75.<br />
918 420<br />
Lightning current and surge arrester<br />
for protection of active corrosion<br />
protection installations (anode<br />
electrical circuit) with integrated<br />
remote signalling contact. Installation<br />
in steel plate enclosure recommended<br />
2<br />
<strong>DEHN</strong> PROTECTS CATHODIC PROTECTION (CP) SYSTEMS<br />
3 ITAK KKS. 989 406/S;<br />
4 EXFS L 100. 923 060<br />
4<br />
Aluminium connection box,<br />
ATEX certified spark gap<br />
IP 65, for protection of CP<br />
for use in hazardous<br />
installations, completely<br />
areas (Zone 2) for<br />
equipped with lightning<br />
protection against over<br />
current and surge arrester<br />
voltages and lightning<br />
type BVT KKS ALD 75 + BVT<br />
KKS APD 36<br />
currents<br />
BLITZDUCTOR VT KKS BVT KKS APD 36.<br />
918 421<br />
Lightning current and surge arrester for<br />
protection of active corrosion protection<br />
installations (sensor measuring circuit) with<br />
integrated remote signalling contact.<br />
Installation into steel plate enclosure<br />
recommended<br />
EXFS 100. 923 100<br />
ATEX certified spark gap for<br />
use in hazardous areas (Zone<br />
1, 2, 21, 22) for protection<br />
against over voltages and<br />
lightning currents<br />
Each cable going out of the CP rectifier (measuring and anode electrical circuit) is led via a lightning current and surge<br />
arrester especially adjusted to CP installations. Thus, the partial lightning currents coming from the pipeline as well as<br />
surges caused by switching operations can be controlled safely. It is recommended to install the lightning current and<br />
surge arresters into a separate steel enclosure in order to prevent any threats to the CP installation due to overloads<br />
e.g. via overhead lines.<br />
Schematic diagram: Lightning and Surge protection for CP systems<br />
For more information refer to www.dehn.co.uk or the <strong>DEHN</strong> <strong>UK</strong> main catalogue
Notes
Lightning Protection<br />
Surge Protection<br />
Safety Protection<br />
<strong>DEHN</strong> (<strong>UK</strong>) LTD<br />
Unit N8B Meltham Mills<br />
Meltham<br />
Holmfirth<br />
West Yorkshire<br />
HD9 4DS<br />
Tel: 01484 859111<br />
Fax: 01484 859222<br />
Email: info@dehn.co.uk<br />
Web: www.dehn.co.uk