Abstract: In prior art multi-phase electric machines in which conductor parts are interlace to form conductor lanes for various phases, the connection points are on the winding end, thus permitting only a very limited local possibility for welding of the conductor ends. In addition, the manufacturing cost is increased with an odd number of phases, since the design is asymmetrical and a number of different formers necessary is relatively high. The invention calls for prefabricated conductor parts (17) to be welded or soldered in the zones which will subsequently be located in the soft magnetic body. Divided bars with a high conductor cross-sectional area are connected before the insertion of soft magnetic segments, connection zones which are large relative to the conductor cross-sectional area are realized, and problems with the insulation are avoided.

Abstract: A vibrational control system for the coils of a stator includes a coil support bracket affixed to the stator, a coil support brace mounted on the coil support bracket with a shim arranged between the coil support brace and the coil support bracket, a push block arranged between the coils and the coil support brace, and control structure for controlling the vibrations of the stator coils.

Abstract: A preload system for preloading end winding coils of a stator includes a coil support platform coupled to a periphery of one of the coils, a clamping apparatus compressing the end winding coils and the coil support platform and a preload apparatus between the clamping apparatus and the coil support platform and not running circumferentially around the clamping apparatus.

Abstract: A remote frequency adjustment system for controlling the vibrational frequency of the coils of a stator of a turbine generator. The system includes a top coil and a bottom coil supported by a coil support brace and a frequency adjustment system that allows for remote adjustment of the characteristic frequency of the coils.

Abstract: An electric machine having a stator winding which is impregnated by total immersion. The bar ends of the stator winding have soldering lugs which are insulated from one another and with respect to grounded housing parts. In order to simplify the assembly of the soldering lug insulation and at the same time to improve heat transfer, the soldering lugs are surrounded on all sides by a deformable insulating material with is pervious to impregnating resin. The insulating material is fixed by means of a shrinkable fabric which is likewise pervious to the impregnating resin. The insulation and shrinkable fabric are impregnated and cured at the same time as the winding insulation.

Abstract: In the stepping motor, in which the stator core 4 is disposed outside the rotor 2 mounted on the rotation shaft, by the bearings 8, 9 mounted on the casings 10, the front and rear portion of the rotation shaft 1 are supported, and the casings 10, 11 are made of a press-molded metal plate.The thin portions 10b, 11b of the casings 10, 11, which are in contact with the stator core 4 support one portion of the outer circumference of the stator core 4. Also, by the alternately folded portions 10c, 11c of the thin portions and the projections 10d, 11d the bearings 8, 9 are supported. Whereby, the thin portions 10b, 11b cover one portion of the stator core, so that dusts are prevented from being entered. Further, the folded portions 10c, 11c and the projections 10d, 11d enable the bearings 8, 9 to install and keep the correct posture.

Abstract: The present invention is an insulating end cap which provides mechanical support to the end turns of the coils. The mechanical support provides insulation by axially, radially and diametrically separating end turns of coils within phases, and end turns of coils of different phases. Additionally, mechanical insulative support is given to coil-to-coil crossovers and also to coil-to-terminal connections. The end cap may be formed integrally by an injection molding method. Further, the end cap removes the need for a cuffed, grain-oriented insulative lamination stack slot liner by providing support for the liner. The liner becomes independent of stack length. The end cap is designed to be symmetrical and one end cap design is suitable for use at both ends of an armature.

Abstract: In the connecting device for the electrical and mechanical connection of component conductors and for the supply or removal of the coolant to or from the hollow conductors (5) of the stator winding bars (3) of electrical machines, the hollow conductors (5) and, optionally, the solid conductors (4) of the winding bar in the winding head are held together in a metallic component (7). This component is connected to a water chamber (2) which is in turn provided with connecting fittings (6, 11) for the supply or removal of the coolant and is surrounded by an insulating jacket (10).Hitherto the production and assembly of said insulating jackets was very time-consuming. In order to shorten the assembly time, the insulating jacket comprises a preferably U-shaped insulating part (10) which is pushed over the metallic component (7), the water chamber (2) and the connecting fittings (6, 11) from the inside and overlaps the latter radially.

Abstract: In an electrodynamic apparatus, a method of securing a coil basket of the type that includes a plurality of top coils and a plurality of bottom coils to a bracing assembly that includes a plurality of support braces includes steps of banding the top coil, the bottom coil and the support brace to each other; positioning a number of inflatable bladders, respectively, between the top coils and the bottom coils in the location of the bandings; and simultaneously inflating the bladders to a predetermined pressure that is sufficient to tension the bandings to a predetermined force, whereby forces that are transmitted to the coil basket from such inflation are imparted evenly throughout the coil basket and at the same time.

Abstract: A device for holding bar ends of a stator winding in a dynamoelectric machine that has an inner ring which fits closely against the bar ends and is shaped like the inside of a cone. An outer support has at least one outer ring and a device for clamping the inner ring to the outer support. The clamping device is supported on the end face of the laminated body or on the stator housing. In order to detune the natural frequency of the winding overhang assembly, additional masses are situated between adjacent winding ends, or arranged on the external outer ring and are uniformly distributed over its circumference. The additional masses consist of a multiplicity of mutually insulated metal wires or metal strips which extend in the circumferential direction and are held together by means of an adhesive and a bandage.

Abstract: A sheet of insulating paper has flat portions inserted between windings that are arranged radially of a stator core, and bent portions extending and bent back radially of the stator core and inserted between windings that are arranged circumferentially of the stator core, the bent portions being positioned between and integral with the flat portions.

Abstract: In the rotor of an electric machine, in particular a motor-generator set for pumped storage units, the rotor body (6), which is constructed from laminated metal sheets, is held together by axially extending clamping bolts (8). The rotor winding (16) is inserted in slots on the outer circumference of the rotor body and held there against the effect of centrifugal force. The winding ends (16a), which emerge axially from the rotor body and form the winding overhang (17), are secured against the effect of centrifugal force by radially extending stud bolts (37) which are screwed into a support ring arrangement (19, . . . , 24). The support ring arrangement comprises a plurality of rings (19, . . . , 24) spaced apart in the axial direction. The rings in the section near the axis of the rotor body are clamped together together with the press fingers (30) by means of the tension bolt (8) axially penetrating the rotor body.

Abstract: Molded coil pieces inserted into a slot are separately connected to molded coil pieces belonging to another slot of the same phase as the former coil pieces by a connecting member. The connecting member has conductive members laminated in a direction perpendicular to a rotating shaft of the rotor in the motor via insulating layers, and the molded coil pieces are separately connected to each other by these conductive members, whereby the protrusion of a coil end from each slot can be reduced, which permits the miniaturization and the weight reduction of the motor. Furthermore, the dimensional accuracy of the connecting members can be improved by a simple constitution and manufacturing process, whereby the characteristics of the electric motor can be remarkably improved.

Abstract: Known flat winding layers that can be prefabricated and inserted into soft magnetic bodies insufficiently utilize the available space in the grooves and winding overhang of polyphase machines and thus increase the volume and weight of the machine. A new winding design allows high power and force densities to be obtained, thanks to the utilization of the whole available space, and are economic to produce. For that purpose each winding layer (4d) is composed of several conductor lanes (22-24) whose number corresponds to the number of phases. The height of the conductor lanes is reduced at the points (25-33) where they intersect, due to the fact that the conductors are mutually offset, and thus pass over each other inside the layer. By variably adapting the width of the conductor the space in the winding overhang through which the magnetic flow is directed in the soft magnetic body is utilized.

Abstract: A rotor of a rotary electric-machine according to the present invention includes a rotor core, a distributed winding wound around the rotor core, a ring member arranged at an end of the rotor core in the axial direction and having an outside diameter which is substantially equal to the outside diameter of the rotor core, and a coupling member for coupling an end portion of the distributed winding to the ring member. The ring member has a plurality of rings arranged at both ends of the rotor core in the axial direction. The rings are arranged one above another. The coupling member has a leading member with a curved portion for leading the end portion of the distributed winding toward the center of the rotor core and a fixture for fixing the leading member into an inner peripheral portion of the ring member.

Abstract: The device for holding the ends of the turns of a stator winding in a dynamoelectric machine comprises an inner ring (15) and a segmented outer ring (10). The stator winding, which consists of bottom and top bars (5, 6), is supported at the end side on the said outer ring (10), which in turn is supported by brackets (8) which are fastened to the machine end face. The bottom and top bars are spaced from one another by pressure hoses (13) filled with synthetic resin. The inner ring (15) consists of two rings having a closed inner conical ring (15b), an outer, preferably multipartite conical ring (15a) and support segments (15c), it being possible for the two conical rings to be braced axially with one another. A winding overhang support constructed in such a way fulfils all practical requirements and can also be reclamped subsequently.

Abstract: An electric motor includes a rotor having at one end a plastic journal bearing which is rotatably supported in an annular portion of a metallic bearing member secured in an integrally-molded bearing support part of a stator. This part is molded to provide axially adjacent first and second cylindrical bores. The annular portion of the metallic bearing member is interference fitted into the first bore and has a plurality of angularly-spaced locking tabs which pierce respective sidewall portions of the second bore.

Abstract: A permanent magnet rotor for an electronically commutated motor (ECM) has a core, a plurality of magnetizable elements spaced around the core, and a thin-walled retaining shell which has been stretched around the core and magnetizable elements to hold the elements in position. The rotor is made by an inventive method which involves axially aligning the core and surrounding magnetizable elements with the retaining shell, and cold-pressing the retaining shell over the core and elements to sandwich the elements between the shell and core. The core and magnetizable elements serve as a mandrel about which the shell is reformed in a cold working operation. Other aspects of the invention include the fixturing apparatus used to align the core and magnetizable elements with the retaining shell, and apparatus which is used to evenly space the magnetizable elements around the core and hold the elements in position during at least a portion of the cold-pressing operation.

Abstract: A stator assembly for a polyphase multi-pole dynamo-electric machine of the variety having at least one common neutral wire connections has a plurality of neutral leads terminated and coupled together by a conductor at one end of the stator. An annular insulator adjacent one end of the stator assembly has a plurality of passages through which the neutral leads are routed. An annular conductor has a plurality of heat concentrating termination sites whereat the neutral leads are mechanically and electrically coupled. The neutral leads are assembled to the insulator and conductor from the outer periphery thereof.

Abstract: The winding overhang support of a turbo-generator comprises an inner ring (12) which fits closely, either directly or with the insertion of an interlayer (14), against the ends of the turns of the stator winding (4, 5), which ends widen like an internal taper, and a multipart external support comprising rings (9, 27) and supporting brackets (7). The supporting brackets (7) are attached to the end of the stator core end plate (3) of the laminated core. The first outer ring (9), which is composed of insulating material, fits closely against the outside of the free ends of the supporting brackets (7). The second outer ring (27) is manufactured from high-strength nonmagnetic steel and is supported on a shoulder (26) on the stator core end plate (3) and is attached to the supporting brackets (7). There are double-wedge clamps (16, 17, 20) between the inward-facing surfaces (18, 19) of the supporting brackets (7) and the ends of the turns.

Abstract: When mounting the winding ends of a stator winding in a dynamo, at least an outer ring of synthetic resin saturated cord ring is wound in multiple windings on the winding ends in its plastically deformable state. The synthetic resin does not harden until after the cord ring is affixed. The outer ring is adapted to be installed in the cramped winding head space and is especially suitable for retrofitting purposes.

Abstract: A motor coil structure has a lamination of in-slot coils incorporated into slots in a stator core and inter-slot connecting wires individually connecting to the end faces of the in-slot coils. Each of the inter-slot connecting wires is in the form of a bar such that the in-slot coils received in two different slots spaced away from each other by slots equal in number to n-1 (where n is the number of phases). Since the space factor depends on the lamination of in-slot coils in the slot, any clearance in the slot can be eliminated to improve the space factor compared with a motor coil structure in which a coil is formed by binding and winding a plurality of wires.

Abstract: A stator frame for an electromagnetic pump includes a casing joined to a hub by a plurality of circumferentially spaced apart struts. At least one electrically insulated power crossover lead extends through the hub, through a crossover one of the struts, and through the casing for carrying electrical current therethrough.

Abstract: A wound electric-motor stator (1) equipped with a device for the temporary storage of the wires (6) of the winding of the stator. This storage device consists, on the one hand, of the stator itself (5) and, on the other hand, of an auxiliary piece (10) provided with a catch (12) for catching on the stator and with a hole (13), for fastening the end of the wires (6) of the stator. These wires (6) can be wound by driving the auxiliary piece in rotation.

Abstract: An elastic support device for stator winding end turns of a rotating electrical machine comprises a supporting cage fixed by supports to the clamping plate of the machine. The device has an elastic system for fixing the supports to the clamping plate comprising at least one ring to which the supports are fixed and which is fastened to the clamping plate by fasteners.

Abstract: A wound stator for a permanent magnet electric machine has an array of coils on the outer rim of a generally cylindrical stator body. The stator coils are wound directly on the stator body by providing the stator body with a plurality of mutually circumferentially-spaced, coil-retaining and forming members around which the ends of the stator coils are coursed so that the coil sides project in a direction parallel to the center axis of the stator. Wire connections are formed between coils of a phase, and wire loops are formed between the last wound coil of one phase and the first wound coil of a subsequently wound phase. Mechanisms are provided for clamping the stator start wires and for temporarily retaining the wire loops.

Abstract: A support assembly for the end windings of a turbine generator includes a plurality of braces which are spaced apart around the circumference of the winding basket and which are mechanically connected to support rings disposed around the stator coils. The support assembly is decoupled from the stator core such that the end windings and end winding support structure float freely of the stator core during normal generator operating conditions. During abnormal short circuit operating conditions, the support assembly contacts brackets on the stator core such that the end windings are slidably engaged upon and supported by the stator core. Radial clamps tightly secure the top and bottom coils to the end winding support assembly to apply radial compressive load to the coils to prevent radial displacement of the coils and to maintain the end winding-end winding support structure as a monolithic structure capable of withstanding abnormal operating conditions.

Abstract: A stator end-winding system is proposed in which the bars of the winding are bent outwards and describe a hollow cone. The supporting proceeds by a wedge-like braced inside ring, a segmented outside ring and supports which also have a wedging effect. The bracing of the inside ring and outside ring is made by tie rods, the outside ring is azimuthally tensionable. Therefore, it can be placed over mentioned cone described by the bars without the necessity of disassembling the stator end-winding system.

Abstract: An electrical stator of an electromagnetic pump includes first and second spaced apart coils each having input and output terminals for carrying electrical current. An elongate electrical connector extends between the first and second coils and has first and second opposite ends. The connector ends include respective slots receiving therein respective ones of the coil terminals to define respective first and second joints. Each of the joints includes a braze filler fixedly joining the connector ends to the respective coil terminals for carrying electrical current therethrough.

Abstract: The present invention provides an improved field assembly of an electric motor which is free from broken wires or short circuits when being incorporated in a power-driven tool. The field assembly of the invention includes a metallic core formed of a stack of annular laminations around a cavity and having an upper end and a lower end, and a terminal plate composed of an insulating material and mounted on the upper end of the core. The terminal plate includes a plurality of first terminal supporting structures each disposed in the vicinity of a first or starting end of a coil winding for supporting and retaining an end of a coil wire extending from the coil winding; and a plurality of second terminal supporting structures each disposed in the vicinity of a second or terminal end of the coil winding for supporting and retaining an end of the coil wire.

Abstract: A motor having a rotatable assembly which rotates about an axis of rotation and having a stationary assembly in magnetic coupling relation with the rotatable assembly. The stationary assembly includes a stator core which has two ends and a plurality of teeth. Adjacent teeth define a slot therebetween. The teeth are wrapped with windings adapted for commutation in at least one preselected sequence. The stationary assembly also includes a slot liner in each of the slots. The slot liners are disposed between the stator core and the windings, thus, separating the windings from the stator core. An end cap on each end of the stator core retains the slot liners in their respective slots.

Abstract: In the gas-cooled electric machine, the stator winding bars, which are connected to one another electrically and mechanically outside the stator core assembly (2) in the overhang space by means of metallic lugs, are provided with caps (8) which virtually completely surround the lugs while leaving free one or more approximately axially extending ducts (9). These ducts (9) are open towards the stator core assembly (2). At its end on the partition side, the cap (8) has an opening (10) which is freely connected to said ducts (9). A flexible line (11) leads from this opening directly into the suction chamber (14) of the fan (5).As a consequence of the pressure difference between the suction chamber (14) and overhang space (13), some of the coolant conveyed by the fan (5) flows through said ducts and cools the rod ends and lugs (7).

Abstract: A solid series connector for electrically connecting a first half-coil to a second half-coil in a stator phase winding includes first and second solid conductor members which are fixedly electrically connected at both ends to groups of conductive strands in the respective half-coils. The connector is much less labor-intensive to install than the group transposition connections used in the past, is more rugged and durable under high temperatures and stresses, and is relatively compact. A second embodiment of the invention is a solid phase connector that incorporates many of the novel features in the solid series connector. A novel method of preparing a conductive strand group for connection to such connectors is also claimed.

Abstract: A coil-end supporting apparatus comprising a holder comprising retainers for supporting the coil ends of a rotary machinery stator at both ends of a bar- or plate- shaped support and an insert perpendicularly intersecting the intermediate portion of the support in such a manner as to be inserted into a slot of a stator core; the holder supporting the coil ends; and a rotary-machinery stator equipped with the coil-end supporting apparatus.

Abstract: An electrical machine contains winding coils, in which the winding coils are able to be slid from the stator bore on to pole bodies provided on the stator of the machine and are retained on the pole bodies. The power/space ratio of the winding space available on the pole bodies is able to be increased by inserting at least one clamping part on the end faces of the pole bodies between the specific end face and the mounted winding coil. This clamping part is provided with at least two retention arms which extend in mutual opposition in the circumferential direction of the machine. The clamping part extends with the retention arms under the winding coil on the coil side facing the exposed end of the pole bodies.

Abstract: An air baffle is provided to redirect cooling air flow for the stator of an electric motor. The air baffle is provided at the air outlet end of the motor, and extends between the stator frame and the stator coils, so that air is forced to pass through the coils to exit the motor. The baffle is fixed to the coils, but is loosely mounted to the stator frame in a floating manner so that the entire assembly is free to rotate and can have limited longitudinal motion when necessary according to the operating condition of the motor.

Abstract: A system for supporting conductors in a dynamoelectric machine having a stator assembly with a plurality of stationary armature elements spaced about a circumference positioned radially about a central longitudinal axis, where each armature element includes an armature winding on a base portion and a leg extending from each of the base portions in a radially inward direction, includes a spacer for supporting one or more electrical conductors and for insulating the one or more conductors for an armature element. The spacer is mountable on the armature element and may comprise one or more grooves for supporting one or more interconnecting bars which are capable of connecting the armature windings of two or more armature elements. The spacers may be fastened to the stator assembly and allow the stator assembly to be equipped with conductors which may be oriented in a pattern which minimizes conductor length and minimizes energy losses.

Abstract: An electric motor having a circular stator with angularly spaced, radially inwardly extending teeth that define winding slots therebetween. The teeth inner ends define a bore whereat the motor rotor is located. The stator is made of a plurality of bound laminations of magnetically permeable material. The end lamination includes tab portions between the stator teeth which are punched out of the same stock material during the punching process and which are, thereafter, bent to extend away from the stator. The bent tab portion provided a resting ledge whereat wire extending between the coils on the stator teeth extends over and is retained away from the rotating rotor. The tabs further aid in properly locating the wire from coil to coil during the winding process. The tab portions have a rounded, semi-circular end part to prevent the snagging and possible damage of the wire during the initial winding process.

Abstract: Apparatus for aligning the endplates with the core of an electrical generator. To accommodate for relative thermal expansion and contraction between the endplates, having differing coefficients of thermal expansion due to being made of a different material than the core and fingerplates, an endplate variable alignment pin is provided for associating the endplates with the remainder of the core structure. The endplate is able to radial expand or contract in relation to the fingerplate plates in a controlled manner. An eccentric pin is provided to compensate for misalignment between the endplate and the fingerplates at each end of the stator core structure. Radial guide blocks are secured to the fingerplates prior to stacking and bolting of the core, to eliminate the need for in situ welding in constricted areas after core construction.

Abstract: A simplified, readily removable air gap baffle ring for a gas cooled dynamoelectric machine, such as a turbine generator. The baffle ring comprises two composite rings with a seal material sandwiched therebetween and bonded into a single ring structure. The seal ring attaches to finger plate extensions which are an integral part of the generator core, and forms an air gap seal between the rotor retaining ring and end wedges which extend from the stator coil slots. The air gap baffle assembly of the present invention effectively seals the high pressure zone of the exciter end of the generator, from the lower pressure radial air gap zone located between the generator rotor and stator, to thereby force cooling gas to flow into the rotor and stator.

Abstract: The cap for the series loop includes a pair of identical cap sections each having side walls, an end wall having first and second segments offset in a longitudinal direction and a cover extending between the side walls and from the end wall on one side of the cap. A longitudinally extending tab lies adjacent one side wall defining a slot for receiving an opposite wall section of the other cap section when assembled. In assembly, the side walls and end wall segments of the respective cap sections are respectively intermeshed to form an enclosure open at one end for receiving the series loop, the enclosure being adjustable in width depending upon the magnitude of the intermeshing of the sections.

Abstract: Methods and apparatus that improve flashover voltage levels in turbine-generators, and reduce the spacing between the end portion connections of one phase group and the end portion connections of neighboring phase groups provide a semiconducting layer on the inside surfaces of insulation that surrounds such stator coil connections. At least one of the metallic connectors which join the end portions in each phase group is electrically coupled to this semiconducting layer, such that discharge between the metallic connector and the insulation surrounding its associated phase group are prevented.

Abstract: Lack of uniformity in liquid cooling the end turns of a dynamoelectric machine can be avoided in a structure including a stator (14) having a rotor receiving opening (22) and opposed end faces (18) and (20). Slots (24) in the stator (14) extend between the end faces (18) and (20) and a plurality of electrical conductors (28) are located in each of the slots (24) such that interstices exist between adjacent conductors (28) and define coolant flow passages within the slots (24) from one face (18) to the other (20). The conductors (18) exit the slots (24) at the end faces (18 and 20) and are redirected into another one of the slots (24) to thereby define end turns (30) at each end face (18 and 20). Two tubes (32 and 34) are located on each end turn (30) and adjacent ends (36, 38) of each tube (32, 34) are slightly spaced to defined a gap (40) and remote ends (42, 44) of each tube (32, 34) are sealed to the associated end face (18, 20) about the periphery of the associated slot (24).

Abstract: A rotor for an electric rotating machine includes a rotor winding, and a feeder lead wire connected to an inner end of the rotor winding so as to supply field current to the rotor winding. The feeder lead wire has a rising portion extending radially outwardly of a rotatable shaft, and a connecting terminal extending from the rising portion in a circumferential direction of the rotatable shaft.

Abstract: An improved circuit ring and method of assembly for use in electrical machines, such as power generators, motors and the like, including an integral bus bar for conducting current to a machine terminal. The circuit ring is fabricated from hollow copper tubing of a rectangular cross-section and of a size which will allow electrical circuit leads to be brazed thereto in such a manner as to avoid damage to insulation. Cooling fluid is passed through the tubing so that the rings can be assembled and used in high power density electrical machinery.

Abstract: For fixing the winding ends (1, 2, 3, 4) of a stator winding in a dynamoelectrical machine, in which the winding ends have inner (2, 3) and outer layers (1, 4), which are mechanically and electrically connected to each other at the axially outer end, the winding ends are clamped between an outer ring (14) and an inner ring (15). The bracing of the two rings (14, 15) and of said winding ends is performed by filling pieces (16) being inserted between two neighboring winding ends (1, 2) in the circumferential direction of the winding overhang, of which filling pieces at least some are wedged in the radial direction with the two rings (14, 15) by means of retightenable wedges (17, 18).This clamping produces a rigid winding overhang, the wedging can be retightened if required and also disassembled without any great effort.

Abstract: This invention relates to a stator winding cooler for a generator having a stator, a fluid-filled rotor mounted for rotation relative thereto and a fluid supply delivering fluid to within the rotor. The stator winding cooler comprises a fluid sprayer disposed within the rotor for accepting fluid within the rotor and delivering the fluid to windings on the stator to cool the windings, the fluid sprayer having a variable orifice therein to render rates of fluid flow through the fluid sprayer insensitive to variations in rotor speed. The stator winding cooler is so designed to function in conjunction with the generator which operates at variable speed. The rate of fluid flow through the fluid sprayer is desired to be held constant to avoid over-spraying end windings at high generator speeds. In the preferred embodiment of the invention, oil, which is used as the cooling fluid, is also passed through a fixed metering orifice within the fluid sprayer which provides a maximum flow rate therethrough.

Abstract: An improved method and apparatus for preventing electrical shorts between sets of stator coil headers and accompanying connections is disclosed in which a reinforced, non-conducting cover is fitted over a pair of stator coil headers, or a stator coil header and an adjacent phase connector. Thereafter, the cavity formed by the fitted cover can be filled with an insulating, solidifying or polymerizing material or resin. Use of such an apparatus insulates the entire header apparatus and prevents any accidental shorting between sets of stator coil ends.

Abstract: The problem of effectively and quickly detecting fault conditions in an electromotive machine (10) is solved using a current transformer assembly (28) having a neutral lead (44). The neutral lead (44) comprises a single piece copper strap (80) having laterally extending strips or posts (81-83) provided for connection to the neutral end conductors (31-33) of armature windings (22 and 24). The strap (80) is punched and bent into shape to include the three neutral posts (81-83). Each neutral post (81-83) carries a current transformer (46-48).

Abstract: A biased securement system for the end winding conductors of a turbine generator includes a support ring with a biased wedge system located between the end windings to compress them in both a radial and circumferential direction. A triangular shaped wedge is secured to the support ring between a pair of confronting spacer blocks having angular surfaces converging in the direction of the support ring. Belleville washers are disposed in a recess in one of the spacer blocks, with a slide plate therebetween which is held in place by a lock plate to retain the same in position.