MODUK - DEF STAN 59-4: PART 9
Plugs and Sockets, Electrical Pattern 124 for Power Distribution in the Field
|Publication Date:||1 May 1976|
The standard range of plugs and sockets, electrical, pattern 124, are designed to comply with the requirements of an MVEE report on the distribution of electrical power in the field
Pattern 124 plugs and sockets electrical are of a robust, all insulated construction, available in single-phase 3 pin and 3-phase 5 pin form. They are manufactured in 15, 25, 40, 63 and 100 amp current carrying ranges, designed for soldered or mechanically retained cable termination.
Fixed items are fitted with a spring loaded hinged cover, which wil act as a retainer when the free item is mated. In conformity with the IEE regulations, the earth contact makes before, and breaks after, all other contacts. Fee Plugs and sockets are fitted wit a restraining sleeve and lugs respectively.
Therie are eight possible different orientations obtained by using an earth pin, 'D' sectioned on its engaging portion and octagonal at its rear end. This octagonal portion engages in an octagonal recess i n the interior moulding and may bel ifted and rotated about its axis for location i n any one of eight positions. The mating socket tube section is complementary to the ;D; section aperture and is located in a similar manner. It will be seen that a free or fixed plug will not mate with a similar socket unless the selected arrangement of both are in line, thus it is possible to assemble any pulg or socket to form eight non-intermatable orientations.
For Orientations and contact allocations reserved for power supplies see DEF STAN 59-4(PART 7) Plugs and Sockets, electrical, orienations and contact allocations reserved for power supplies
These connectors are normallyu supplied in orientations positions No.1 UUsers are expected to re-set the orientations as necessary to suit their requirments, henece only one NATO Stock Number will be used to identifiy a particular style connector. Each variant of orientation will not be separately codified.