Frequently Asked Questions

Flameproof equipment is electrical equipment built inside an enclosure that can contain an explosion of gas inside it and stop the flame from reaching the flammable atmosphere outside. The protection method is called Ex d.

Flameproof (Ex d) is the IEC and Indian term; explosion proof is the North American (NEC) term. Both describe enclosures that contain an internal explosion, although the standards and testing rules differ by region.

In oil and gas, refineries, chemical and petrochemical plants, pharmaceutical and API plants, paint and solvent units, fertiliser plants, distilleries, gas bottling plants and mines – anywhere flammable gas or vapour may be present.

Hazardous areas are classified by how often an explosive gas atmosphere is present: Zone 0 – continuously; Zone 1 – likely during normal operation; Zone 2 – not likely, and only for a short time. Flameproof (Ex d) equipment is used in Zone 1 and Zone 2.

Gas groups classify gases by how easily they ignite. IIA covers gases like propane, IIB covers gases like ethylene, and IIC covers the most easily ignited gases such as hydrogen and acetylene. IIC equipment can also be used for IIA and IIB.

The temperature class shows the maximum surface temperature of the equipment. It must be lower than the auto-ignition temperature of the gas present. T6 is the coolest (85 °C) and T1 the hottest (450 °C).

Flameproof equipment is tested to IS/IEC 60079 standards by recognised laboratories such as CIMFR, needs PESO approval for use in petroleum and explosive areas, and is covered by BIS certification. Trimiti flameproof equipment is PESO, CIMFR and BIS certified; certificate copies are shared with our quotation.

No. Flameproof equipment prevents an internal explosion from igniting the outside atmosphere. It is not designed to survive an external fire.

Know the hazardous area zone, gas group and temperature class, the electrical rating, cable sizes and whether the equipment is indoor or outdoor. Share these with us and we will suggest the right product.

It greatly reduces the risk of ignition, but correct selection, installation, cable glanding and regular maintenance are equally important.

Flameproof control panels, junction boxes, HMI panels, panel enclosures, starters, LED lights, light fittings, instrument enclosures, exhaust fans, push button stations, switch plug sockets, control gears and special enclosures.

Send your requirement through our enquiry form, email response@flameproofequipmentsindia.com or call +91-251-2454319.