6+1 : the additional formula for safe connections

The connection and disconnection of electrical apparatus in a potentially explosive environment – without the use of tools, without isolation from the mains or disconnection of terminals, and without a “hot work permit“– represents a decisive step into a future in which the installation, servicing and repair of electrical apparatus can be carried out easily, safely and economically.
Cooper Crouse-Hinds GmbH has extended its eXLink connector series for hazardous areas by a series of 6+1 pole connectors. By using this connectors you can, for example, plug and unplug ex-protected electric motors with monitoring device or servo-signal for speed control with only one small sized plug. The improvements prevent operating errors and make handling easier, even under extreme conditions. The connectors, plugs, receptacles, inlets and elbows of the series eXLink are designed in the type of protection Ex-d. They are extremely small and can be used in the instrumentation technology for all active devices and sensors. In addition to this, it is also possible to connect other electrical apparatus with a current consumption up to 3-phase 16 A.
The contact pins feature the time-tested CEAG contacts made of specially treated copper-beryllium tape. They are punched out like a jalousie and have a large number of contact points that guarantee a continuous and faultless electrical contact. A coupling ring integrated in the plug enclosure guarantees the mechanical strength of the connection. Depending upon the operational area conditions and installation practice used on site, the user can choose between cold impact resistant moulded plastic, nickel-plated brass or stainless steel versions.
An Ex-d compartment round the connection pins ensures a reliable explosion protection to meet Zones 1,2, 21 and 22 requirements during the connection or disconnection of the plug connections.
Similar to the CEE system, the plugs and sockets can be coded for non-interchangeability and specific applications.
In accordance with the requirements for an up-to-date, safe and timesaving installation, none of the components has screws. The available connection methods include crimping or cage-type spring-tension terminals.