Page 252 - Surge-Protection-E_0.pdf

Isolating Spark Gaps

EXFS 100 / EXFS 100 KU
• 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 94/9/EC, IECEx, UL
and Inmetro
Isolating Spark Gaps ATEX and IECEx-certified isolating spark gap with a low sparkover voltage for

lightning equipotential bonding according to IEC 62305.

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

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

EXFS 100
923 100 EXFS 100
Isolating spark gap for use in hazardous areas with plastic sheath and M10 threaded screws.
923 100 4013364108325 04 01 05 02 289 g
269,50 €
Type EXFS ... 100
Part No. 923 100
Isolating spark gap according to EN 62561-3 / IEC 62561-3 yes
Lightning impulse current (10/350 µs) (Iimp) 100 kA
Class (lightning current carrying capability) H
Rated impulse sparkover voltage (Ur imp) ≤ 1.25 kV
Degree of protection IP 67
Approvals UL, Inmetro
ATEX approvals DEKRA 11ATEX0178 X
Ex marking according to EN 60079-0 and EN 60079-1: gas II 2 G Ex db IIC T6 Gb
Ex marking according to EN 60079-0 and EN 60079-31: dust II 2 D Ex tb IIIC T80 °C Db IP 66/67
IECEx approvals IECEx KEM 09.0051X
Ex marking according to EN 60079-0 and EN 60079-1: gas Ex db IIC T6 Gb
Ex marking according to EN 60079-0 and EN 60079-31: dust Ex tb IIIC T80 °C Db IP 66/67
Inmetro approvals TÜV 17.0698 X
Ex marking according to EN 60079-0 and EN 60079-1: gas Ex db IIC T6 Gb
Ex marking according to EN 60079-0 and EN 60079-31: dust Ex tb IIIC T80 °C Db IP 66/67

248 You will find detailed product information on our website Valid as of August 1, 2020