Plug-and-socket’ system

A second example of encapsulation is a contactless operating plug-and-socket system with integrated electronics suitable for zone 1 application (Figs 6.37 and 6.38). The system allows power and data transmission with PROFIBUS DP/VI. The socket with an integrated pigtail cable is attached to a terminal box in increased safety - e Within the socket, the 24 V DC power... 

Figure 6.37 Contactless plug-and-socket system, unidirectional inductive power transmission, bidirectional data transmission via optical fibres.

Busbar trunking systems are frequently employed in machine shops to facilitate relocation of the equipment. The busbars are located overhead, suspended from the roof stmcture, and arranged, in conjunction with the lighting system, in a suitable grid pattern. Fused plugs and sockets provide outlets to individual items of equipment. 

The plug and socket according to Fig. 6.142 shows a coaxial arrangement of the contacts of a three-phase system. The central multi-contact pin is intended for six pilot and auxiliary circuits. Plug and socket are fixed together by means of a special fastener. 

MAJOR APPLICATIONS High-temperature applications, automobile parts (e.g., radiator, ventilation, and fuel supply systems), electronics housings, plug and socket connectors, printed circuit boards, tennis rackets, golf clubs. 

Some portable equipment requires substantial power to operate and may require voltages higher than those usually used for portable tools, so that the current is kept down to reasonable levels. In these cases, power leads with a separate earth conductor and earth screen must be used. Earth leakage relays and earth monitoring equipment must also be used, together with substantial plugs and sockets designed for this type of system. 

Every joint and connection in a system shall be mechanically and electrically suitable for its use. This includes terminals, plugs and sockets. 

Medical robots are examples of medical equipment and so must conform to the normal European standards affecting the use of medical equipment. A few of these have been recently formulated but the majority are still to be agreed by the Community. One problem is that whilst the requirements of simple components (such as plugs and sockets) can be readily defined, the design, for example, of programmable motorised control systems, is more difficult. In the past. National Standards have used such phrases as "shall conform to the best current practice"... 

A plug/socket system that deals with the transfer of electronic energy is illustrated in Fig. 7 [57]. The absorption and fluorescence spectra of a CH2CI2 solution containing equal amounts of binaphthocrown ether 4 and amine 5 indicate... 

The plug-socket concept described above can be used to design molecular systems that mimic the function played by a macroscopic electrical extension cable. The operation of an extension cable is more complex than that of a plug/socket system, since it involves three components that must be hold together by two connections that have to be controllable reversibly and independently in the fully connected system, an electron (or electronic energy) flow must take place between the remote donor and acceptor units (Fig. 8). 

---