LIGHTNING EQUIPOTENTIAL BONDING ISOLATING SPARK GAPS. EXFS L / EXFS KU for explosive Areas
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1 EXFS L / for explosive Areas For indirect connection/earthing of functionally separate system parts at lightning strikes Unit for lightning equipotential bonding according to IEC for hazardous areas (Zone 2) Corresponds to ATEX Guideline 94/9/EG Corrosion-resistant enclosure of zinc die casting with synthetic cover and flexible conductor connection For bridging insulating pieces, insulating flanges, etc. in cathodic protected pipe sections Highly loadable unit ATEX-certified isolating spark gap for lightning equipotential bonding according to IEC , approved unit with flexible conductor connection EXFS L...: : Isolating spark gap for explosive zones with flexible connecting cable Isolating spark gap for explosive zones with 1.5 m long connecting cables for underground installation The Ex isolating spark gaps of the product family EXFS L / are used for conductive system parts that cannot be interconnected directly in hazardous zones. This affects, for example, pipe sections furnished with a cathodic corrosion protection system. The spark gaps EXFS L and certified by ATEX provide approved and tested safety according to harmonised European standards. The arc-resistant tungsten-copper electrodes provide the Ex spark gaps with a long service life. The approved type EXFS L with flexible conductor connection adjusts itself quickly to every application environment. The prewired spark gaps include connecting cables with different lengths with cable lug, M10 screw and nut. The flat and/or angled connecting clips (IF) available as accessories allow an easy connection of the spark gap at pipeline flanges. The unit is enclosed by a damp-proof PVC housing and thus ideally suitable for underground installation at insulating couplings
2 EXFS EXFS EXFS 300 EXFS L / EXFS L... XFS L100 Spark Gap XFS L200 Spark Gap XFS L300 Spark Gap l max = 300 mm (avoid loops) Dimension drawing EXFS EXFS L...: Ex Isolating spark gap for aboveground installation EXFS L100 EXFS L200 EXFS L300 Lightning impulse current (10/350) I imp 50 ka 50 ka 50 ka Nominal discharge current (8/20) I n 100 ka 100 ka 100 ka 100% lightning impulse sparkover voltage U as kv 2.5 kv 2.5 kv Power frequency sparkover voltage (50 Hz) U aw 1.2 kv 1.2 kv 1.2 kv Type of protection according to EN 50014, EN II 3 G EEx nc II T4 II 3 G EEx nc II T4 II 3 G EEx nc II T4 Approvals, Certifications ZELM 03 ATEX 3192X ZELM 03 ATEX 3192X ZELM 03 ATEX 3192X Enclosure length L 90 mm 90 mm 90 mm Diameter of enclosure D 63 mm 63 mm 63 mm Enclosure material zinc die casting, plastic zinc die casting, plastic zinc die casting, plastic Connecting cable H01N2-D 25 mm 2 with cable lug and M10 screw/nut Cable length 100 mm 200 mm 300 mm Suitable for flange size mm mm mm Type EXFS L100 EXFS L200 EXFS L300 Part No Packing unit 1 pc(s) 1 pc(s) 1 pc(s) Accessory Part for EXFS L / Accessory Part for EXFS L / Angled Connection Bracket IF 1 Angled connection bracket for EXFS...; diameter corresponds to bolt diameter of the flange screw joint (d1 possible up to max. 60 mm) IF 1 St/tZn Connection Bracket Type IF -SET Flat Connection Bracket IF 3 Flat connection bracket for EXFS...; diameter corresponds to bolt diameter of the flange screw joint (d1 possible up to max. 60 mm) IF 3 St/tZn Connection Bracket Type IF -SET
3 EXFS L / Ex- Isolating Spark Gap Dimension drawing : Ex Isolating spark gap with connecting cables for above- and underground installation Lightning impulse current (10/350) I imp 50 ka Nominal discharge current (8/20) I n 100 ka 100% lightning impulse sparkover voltage U as kv Power frequency sparkover voltage (50 Hz) U aw 1.2 kv Type of protection according to EN 50014, EN II 3 G EEx nc II T4 Approvals, Certifications ZELM 03 ATEX 3192X Enclosure length L 90 mm Diameter of enclosure D 63 mm Enclosure material zinc die casting, plastic Connecting cable NYY-J-1x25 mm 2 Cable length 2 x approx mm Type Part No Packing unit 1 pc(s) 292
4 / KU For explosive Areas For indirect connection/earthing of functionally separate installation parts at lightning effects Unit for lightning equipotential bonding according to IEC in hazardous areas For bridging insulating units, insulating flanges, etc. in pipe sections protected against cathodic corrosion Especially low sparkover voltage Unit with extremely high loadability and fail-safe performance ATEX-certified isolating spark gap for lightning equipotential bonding according to IEC with low sparkover voltage. : KU: Isolating spark gap for explosive zones with threaded M10 bolt and nut Isolating spark gap for explosive zones with 2 m long connecting cables for underground installation The Ex isolating spark gaps of the / KU family are used when electrically conductive installation parts in explosive areas cannot be connected directly. The low sparkover voltages of the spark gaps have proved themselves for protection, when the separate installation parts had only a low insulation resistance against each other. The ATEX-certified spark gaps / KU provide approved safety according to harmonised European standards. The powerful Ex isolating spark gaps are furnished with a fail-safe device, which establishes a safe state (short circuit) even in case of overloads. For connecting the spark gaps, prewired connecting cables with different lengths are available as accessories. Flat and angled connection brackets (IF) make the connection of the spark gaps at pipe flanges easier. The variant KU is enclosed by a damp-proof plastic coating. Therefore, it is ideal for underground installation at insulating couplings
5 / KU l max = 300 mm (avoid loops) Ex- Isolating Spark Gap Dimension drawing : Ex Isolating spark gap made of stainless steel for aboveground installation Lightning impulse current (10/350) I imp 75 ka Nominal discharge current (8/20) I n 100 ka 100 % Lightning impulse sparkover voltage U as kv Power-frequency sparkover voltage (50 Hz) U aw 0.07 kv Type of protection according to EN 50014, EN II 2 G EEx m II T3 Approvals, Certifications ZELM 02 ATEX 0096X Enclosure length L 160 mm Enclosure diameter D 50 mm Enclosure material stainless steel / plastic Connection of enclosure hexagon screw M10x16 mm and M10 nut Type Part No Packing unit 1 pc(s) AL EXFS L300 AL EXFS L100 Connecting Lead for AL EXFS L200 Connecting Lead for AL EXFS L300 Connecting Lead for Accessory Part for / KU AL EXFS Connecting Cable Cu 25 mm 2 L AL EXFS L200 Connecting cable for ; with cable lug Ø10.5 mm, M10 hexagon screw and nut, StSt (V2A) and spring washer Cable lug Cross Cable Type material section length pc(s) No. AL EXFS L100 Cu/gal Sn 25 mm mm AL EXFS L200 Cu/gal Sn 25 mm mm AL EXFS L300 Cu/gal Sn 25 mm mm Accessory Part for / KU Angled Connection Bracket IF 1 Angled connection bracket for EXFS...; diameter corresponds to bolt Connection Bracket Type IF -SET diameter of the flange screw joint (d1 possible up to max. 60 mm) IF 1 St/tZn Connection Bracket Type IF -SET Flat Connection Bracket IF 3 Flat connection bracket for EXFS...; diameter corresponds to bolt diameter of the flange screw joint (d1 possible up to max. 60 mm) IF 3 St/tZn
6 KU / KU KU XFS C1 KU Spark Gap Dimension drawing KU KU: Ex Isolating spark gap with connecting cable for above- and underground installation KU Lightning impulse current (10/350) I imp 75 ka Nominal discharge current (8/20) I n 100 ka 100 % Lightning impulse sparkover voltage U as kv Power-frequency sparkover voltage (50 Hz) U aw 0.07 kv Type of protection according to EN 50014, EN II 2 G EEx m II T3 Approvals, Certifications () ZELM 02 ATEX 0096X Enclosure length L 160 mm Enclosure diameter D 50 mm Enclosure material stainless steel / plastic Connection of enclosure NYY-J-1x25 mm 2, approx. 2 m long Type KU Part No Packing unit 1 pc(s) 295
TFS / KFSU: Isolating spark gaps with plastic coating and 2 connections (Rd 10 mm) made of stainless steel
Isolating Spark Gaps For lightning equipotential bonding For indirect connection/earthing of functionally separate parts of installations when being affected by lightning For use in correspondence with
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