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Lightning Equipotential Bonding

Isolating Spark Gaps TYP480

EX isolating spark gap with connecting cables for aboveground and underground installation; with water-proof sheath; may be shortened for short cable lengths.

  • For indirect connection / earthing of functionally isolated parts of installations under lightning conditions
  • For lightning equipotential bonding according to IEC 62305 in hazardous areas (zone 2)
  • connector cable 25mm2, highly-flexible, with cable lug, screw (M10), nut and lock washer

Application: Indirect by-passing of insulating flanges and insulating glands.

Basic circuit diagram

Technical data

Type TYP480
Isolating spark gap according to EN 62561-3 / IEC 62561-3yes
Nominal discharge current (8/20 μs) In100 kA
Lightning impulse current (10/350 μs) Iimp100 kA
Rated power-frequency withstand voltage (50 Hz) UwAC300 V
Power frquency sparkover voltage (50 Hz) Uaw≤ 1,2 kV
Rated impulse sparkover voltage Ur imp≤ 3,0 kV
Operating temperature range TU-20 °C – +80 °C
Degree of protectionIP 67
ATEX directive 94/9/ECEX II 2G EEx D IIC T6
Enclosure materialzinc die-cast, plastic
Connecting cable (mm2)25
Cable length (mm)350
Weight (kg)0.665


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