Designed for Zone 2

Stahl has produced a range of explosion-protected hoists designed for use in Zone 2 designated areas. Under European rules, in areas designated as Zones 0 and 1 only electrical apparatus with a Certificate of Conformity and EC Type Examination Certificate may be used. In Zone 2 electrical apparatus which meets the basic health and safety requirements of the 94/9/EC Directive and which has a Manufacturer's Declaration of Conformity can be used. Such electrical equipment must be designed in such a way that it ensures a normal standard of protection which corresponds to EN 50021/IEC 60079-15. Because of the lack of dedicated Zone 2 equipment, however, users have often been forced to use more expensive and technically complicated cranes and hoists designed for Zone 1 use. Stahl claims to be the first manufacturer to offer cranes, wire rope hoists and crane components especially optimised for use in Zone 2.

The SHex n electric wire hoists are equipped with special three-phase AC squirrel cage motors capable of high rate switching. The twin-disc magnetic brake is maintenance-free and has asbestos-free brake linings with long service life. Maintenance-free gearboxes are designed to give a long life, reduced noise and low temperature rise.