EXFS 100 / EXFS 100 KU

For Use in Hazardous Areas

ATEX and IECEx-certified isolating spark gap with a low sparkover voltage for lightning equipotential bonding according to IEC 62305.
  • For indirect connection / earthing of functionally isolated parts of installations under lightning conditions
  • Device for lightning equipotential bonding according to IEC 62305 in hazardous areas
  • For bridging insulating joints, insulating flanges, etc. in cathodically protected pipe sections
  • For safe installation in Ex zone 1 (gas) or 21 (dust)
  • Extremely low sparkover voltage
  • Extremely high alternating current withstand capability
  • Approval according to ATEX directive 2014/34/EU, IECEx, UL and Inmetro

Version

EXFS 100: Isolating spark gap for use in hazardous areas with plastic sheath and M10 threaded bushings
EXFS 100 KU: Isolating spark gap for use in hazardous areas with two 2 m long connecting cables for underground installation

Details

The Ex isolating spark gaps of the EXFS 100 / EXFS 100 KU product family are used when conductive installation parts situated in hazardous areas cannot be directly interconnected.
The spark gaps with low sparkover voltage are especially efficient for isolated parts of installations with low insulation strength.
No special requirements have to be observed for safe installation in zone 1 (gases) or zone 21 (dusts).
With a maximum lightning impulse current of 100 kA (10/350 µs), EXFS 100 and EXFS 100 KU meet class H requirements (highest lightning current carrying capability class).
The ATEX and IECEx-certified EXFS 100 and EXFS 100 KU spark gaps provide approved safety according to harmonised European standards.
Prewired connection cables in different lengths are available as accessories for connecting EXFS 100 spark gaps. Flat and angled connection brackets (IF) allow simple connection of the spark gaps to pipeline flanges.
EXFS 100 KU types are enclosed by a water-proof plastic sheath and are therefore ideally suited for underground installation on insulating couplings.

Application

Models

EXFS 100

EXFS 100 KU

EXFS 100

Installation of EXFS 100Dimension drawing EXFS 100

Isolating spark gap for use in hazardous areas with plastic sheath and M10 threaded screws.


Specifications

Type
Part No.
Isolating spark gap according to EN 62561-3 / IEC 62561-3
Lightning impulse current (10/350 µs) (Iimp)
Class (lightning current carrying capability)
Rated power-frequency withstand voltage (50 / 60 Hz) (UwAC)
Rated impulse sparkover voltage (Ur imp)
Operating temperature range (TU)
Degree of protection
Approvals
ATEX approvals
Ex marking according to EN 60079-0 and EN 60079-1: gas
Ex marking according to EN 60079-0 and EN 60079-31: dust
IECEx approvals
Ex marking according to EN 60079-0 and EN 60079-1: gas
Ex marking according to EN 60079-0 and EN 60079-31: dust
Inmetro approvals
Ex marking according to EN 60079-0 and EN 60079-1: gas
Ex marking according to EN 60079-0 and EN 60079-31: dust
Enclosure length
Enclosure diameter
Enclosure material
Connection of enclosure
Extended technical data:
– Rated discharge current (50 / 60 Hz) (Imax)
– Noimnal discharge current (8/20 µs) (In)
– Power frequency sparkover voltage (50 / 60 Hz) (Uaw)
Weight
GTIN
PU
Part No.
  • EXFS 100
  • 923 100
  • yes
  • 100 kA
  • H
  • 250 V
  • ≤ 1.25 kV
  • -20 °C ... +60 °C
  • IP 67
  • UL, Inmetro
  • DEKRA 11ATEX0178 X
  • II 2 G Ex db IIC T6 Gb
  • II 2 D Ex tb IIIC T80 °C Db IP 66/67
  • IECEx KEM 09.0051X
  • Ex db IIC T6 Gb
  • Ex tb IIIC T80 °C Db IP 66/67
  • TÜV 17.0698 X
  • Ex db IIC T6 Gb
  • Ex tb IIIC T80 °C Db IP 66/67
  • 100 mm
  • 45.5 mm
  • plastic sheath
  • M10 threaded bushing, 2x M10x25 mm, 2x spring washer
  • --------------------
  • 500 A / 0.2 sec.
  • 100 kA
  • ≤ 0.5 kV
  • 289 g
  • 4013364108325
  • 1 pc(s)
  • 923 100
  • Specifications (PDF)
  • More

EXFS 100 KU

Installation of EXFS 100 KUDimension drawing EXFS 100 KU

Ex isolating spark gap with connecting cable for aboveground and underground installation; with water-proof sheath; can be shortened to keep cables as short as possible.


Specifications

Type
Part No.
Isolating spark gap according to EN 62561-3 / IEC 62561-3
Lightning impulse current (10/350 µs) (Iimp)
Class (lightning current carrying capability)
Rated power-frequency withstand voltage (50 / 60 Hz) (UwAC)
Rated impulse sparkover voltage (Ur imp)
Operating temperature range (TU)
Temperature range during installation
Degree of protection
Approvals
ATEX approvals
Ex marking according to EN 60079-0 and EN 60079-1: gas
Ex marking according to EN 60079-0 and EN 60079-31: dust
IECEx approvals
Ex marking according to EN 60079-0 and EN 60079-1: gas
Ex marking according to EN 60079-0 and EN 60079-31: dust
Inmetro approvals
Ex marking according to EN 60079-0 and EN 60079-1: gas
Ex marking according to EN 60079-0 and EN 60079-31: dust
Enclosure length
Enclosure diameter
Enclosure material
Connection of enclosure
Cable length
Extended technical data:
– Rated discharge current (50 / 60 Hz) (Imax)
– Noimnal discharge current (8/20 µs) (In)
– Power frequency sparkover voltage (50 / 60 Hz) (Uaw)
Weight
GTIN
PU
Part No.
  • EXFS 100 KU
  • 923 101
  • yes
  • 100 kA
  • H
  • 250  V
  • ≤ 1.25 kV
  • -40 °C ... +60 °C
  • -5 °C ... +50 °C
  • IP 67
  • Inmetro
  • DEKRA 11ATEX0178 X
  • II 2 G Ex d IIC T6 Gb
  • II 2 D Ex tb IIIC T80 °C Db IP 66/67
  • IECEx KEM 09.0051X
  • Ex d IIC T6 Gb
  • Ex tb IIIC T80°C Db IP 66/67
  • TÜV 17.0698 X
  • Ex db IIC T6 Gb
  • Ex tb IIIC T80 °C Db IP 66/67
  • 123 mm
  • 34 mm
  • water-proof plastic sheath
  • NYY-J-1x25 mm2
  • 2x approx. 2000 mm
  • --------------------
  • 500 A / 0.2 sec.
  • 100 kA
  • ≤ 0.5 kV
  • 1,98 kg
  • 4013364108332
  • 1 pc(s)
  • 923 101
  • Specifications (PDF)
  • More
    • Further Pictures
      Installation of EXFS 100 KU
      open PDF
      Dimension drawing EXFS 100 KU
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      Isolating spark gap EXFS 100 KU
      Isolating spark gap EXFS 100 KU according to IEC 62561-3:2011 (81/387/CDV) / EN 62561-3
      for lightning equipotential bonding according (protection of insulation) acc. to IEC 62305-3, 
      particularly for use in potentially explosive atmospheres up to zone 1 / 21, 
      with connecting cables for aboveground and underground installation
      IECEx / ATEX certification (2014/34/EU)
      Ex marking according to 
      IEC / EN 60079: Gas   II 2G Ex d IIC T6
      IEC / EN 61241: Dust   II 2D Ex tD A21 IP67 T 80°C
      Lightning impulse current (10/350): 100 kA
      Class of lightning current carrying capability acc. to IEC 62561-3:2011 (81/387/CDV) / EN 62561-3: H
      Nominal discharge current (8/20): 100 kA
      Rated impulse sparkover voltage: <= 1.25 kV
      Power frequency sparkover voltage (50Hz): <= 0.5 kV
      Rated power frequency withstand voltage (50 Hz): <= 250 V
      Rated discharge current  (50 Hz): 
      500 A / 0.5 sec. (Tu <= 45°C)
      Degree of protection: IP67
      Water-proof plastic coating
      Cable: NYY-J  1 x 25 mm2 on both ends, approx. 2 m long

      delivery and installation.

      Brand: DEHN
      Type: EXFS 100 KU
      Part No.: 923 101

      or equivalent.
      Installation Instructions
      Certificates
      CE_Isolating_Spark_Gap_EXFS_100_KU
      IECEx KEM 09_0051X
      DEKRA 11ATEX0178 X
      CAD-Data for registered Users
      923101.stp
      923101.igs
      923101.jt
      923101.dwg
      923101m_E.dxf

Accessories

Angled connection brackets – IF 1 –

Angled connection bracket for EXFS ...; diameter corresponds to the bolt diameter of the flange joint; material: St/tZn.

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Specifications

Type
Part No.
Design
Material
Borehole diameter d1
Weight
GTIN
PU

Flat connection brackets – IF 3 –

Flat connection bracket for EXFS ...; diameter corresponds to the bolt diameter of the flange joint; material: St/tZn.

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Specifications

Type
Part No.
Design
Material
Borehole diameter d1
Weight
GTIN
PU

EXFS 100: Connecting Cable, Cu, 25 mm²

Connecting cable for EXFS 100; two cable lugs (Ø10.5 mm) made of Cu/gal Sn, screw, nut and spring washer.

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Specifications

Type
Part No.
Material of the cable lug
Cross-section
Cable length
Weight
GTIN
PU