Explosion-proof bridge cranes

In chemical and petrochemical industry, oil and gas extraction facilities, mining industry, and many other industries combustible materials, gases, and vapors are leaked during production, processing, transportation, and storage. There is a risk of explosion if combustible dusts (e.g. flour) are formed during manufacturing processes. These combustible materials mix with oxygen in the air to form an explosive mixture. In this atmosphere, any source of ignition (flame, electrical, mechanical spark, etc.) leads to explosion, which could result in serious personal and property loss.

This means that electrical equipment must be treated as a potential source of ignition. Therefore all electric equipment of a crane has to be explosion-proof.

STAHL CraneSystems, as Europe's largest manufacturer of explosion-proof electrical equipment and crane components, has many decades of experience in providing perfect safety in the operation of explosion-proof cranes.

Explosion-proof lifting equipment according to Directive 94/9/ / EC (ATEX / 95) in the following classifications:

• Trolleys with rope hoists

  Zone	Machine category	Dangerous medium	Hazard class
  Zone 1	II 2 G	gas	Ex de IIB T4 or Ex de IIC T4
  Zone 2	II 2 G	gas	Ex de nA IIB T3 (T4) or Ex nA de IIC T3 (T4)
  Zone 21	II 2 D	dust	Ex tD A21 IP66 T 120°C
  Zone 22	II 3 D	dust	Ex tD A22 IP66 T 120°C

• Trolleys with chain hoists

  Zone	Machine category	Dangerous medium	Hazard class
  Zone 1	II 2 G	gas	Ex de IIB T4 or Ex de IIC T4
  Zone 21	II 2 D	dust	Ex tD A21 IP66 T 120 °C
  Zone 22	II 3 D	dust	Ex tD A22 IP66 T 120°C