Flamproof enclosure testing

Flameproof enclosure testing determines if electrical equipment is capable of preventing an explosion within the equipment from spreading to the outside of the equipment.

The design requirements for flameproof enclosures are specified in International Standard IEC 60079-1 and Australian/New Zealand Standard AS/NZS 60079.1.

Electrical products used in the mining, oil and gas and chemical industries, such as luminaries, metering devices, motors, generators, brakes, valve actuators, plugs and sockets, are assessed and tested for compliance with the flameproof Standard.

Manufacturer's documents for flameproof enclosures must provide details of all flame paths, including minimum widths and maximum gaps, and provide tolerances for all critical dimensions. The Standard sets down the minimum widths and maximum gaps for specific flame paths of each gas group and free internal volumes of the enclosures.

Some of flameproof tests that are carried out in the process of the equipment certification are:

  • Temperature measurement test for determination of service temperature and temperature class of the equipment
  • Reference pressure determination tests using different explosive gas mixtures for different gas group applications (Group I, Group IIA, Group IIB and Group IIC)
  • Over-pressure tests
  • Non-transmission of internal ignition tests using another set of explosive gas mixtures for different gas group application (Group I, Group IIA, Group IIB and Group IIC)

View our checklist to see if the product complies with the relevant clauses of clauses of flameproof "Ex d" - IEC 60079-1 before sending for certification.

Book your test by filling out an application form.