Cobham

The most important thing we build is trust

 

Electrostatic Tests Performed in a Climate Controlled Room.

The use of glass fibre and composites within fuel tanks requires demonstration that hazardous levels of static electricity may accumulate on these surfaces. Our facility has been designed to show whether or not charge accumulation on dielectrics in fuel tanks can lead to incendive electrostatic discharges.

Capabilities

  • Measurement of surface and volume resistance measurements in accordance with
    • BS-EN 61340-2-3:2000
    • ASTM D257-07
  • Panel stored charge tests
    • Consists of charging a panel then checking to see if hazardous levels of charge have been stored using a gas ignition probe Built as per BS EN 61340-4-4:2005
    • Calibrated Ethylene/Air supply controlled using digital flow meters capable of a combined flow of at least 0.21l/s as per BS EN 61340-4-4:2005
    • Charging can be achieved either by Triboelectric or Corona methods in accordance with Annex D of BS EN 13462-1:2009. Corona charging can be applied systematically using a computer controlled XY jig.
  • Charging tests with non conductive materials as per with Annex D.4.2.3 of BS EN 13463-1:2009 (E)
    • We can spray charge objects using needle electrodes then measure the discharge (charge transferred) to a slowly approaching spherical electrode
  • Bespoke computer controlled XY jig can be used to make systematic measurements over a sample
  • All tests can be performed in a temperature controlled room capable of maintaining 23+/-2°C and a relative humidity of less than 30%.

 

300kV ESD Tests and 25kV ESD

Our 400kV DC transportable generator is configured to provide a facility for testing 300kV ESD discharges for qualifying helicopter borne equipment or munitions. Testing for this threat can be carried out at our Abingdon facility, or testing can be performed on customer site.

 

The human generated 25kV ESD discharge test can also be provided.

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