Abstract: This series-capacitor compensation equipment comprises a series-capacitor bank in series with a power line and an overvoltage protection circuit for the capacitor bank comprising the series combination of a surge arrester and electric bus structure connected in series with the power line and in parallel with the capacitor bank. The surge arrester includes metal-oxide varistor elements which impart a relatively high resistance to the arrester when the voltage across the arrester is in a normal range and a relatively low resistance when the voltage across the arrester rises to a predetermined value that produces arrester operation. The capacitor bank will discharge through the overvoltage protective circuit should a varistor element fail during arrester operation.

Abstract: An apparatus for detecting noise in communications channels in electrical power transmission systems and generating squelch signals, for transfer-trip receivers for performing protection and control functions, detects changes in a period of an analog signal and generates a signal in response to such changes. The apparatus receives an analog signal, generates zero-pulses corresponding to zero-transitions of the analog signal, generates an error pulse when an interval between successive ones of the zero-pulses either exceeds a preselected long window interval or is less than a preselected short window interval, and generates, in response to the error pulse, a squelch signal.

Abstract: An apparatus for triggering chemical augmented electrical fuses includes a light source which emits a light signal in the form of visible or infrared light energy upon receiving a signal from a control system, trigger signal source or other fuses. The light signal is coupled to a light detector by an optical coupling device such as a fiber optic cable. Upon receipt of the light signal, the light detector generates a signal which causes the application of electrical energy to exothermic material in a fuse, thereby detonating the material and causing interruption of current through the triggered fuse.

Abstract: This is a method for making a transformer core comprising superposed groups of amorphous steel strip wrapped about the core window, each group comprising an inner section and an outer section disposed in superposed relationship, and each section comprising many thin layers of amorphous steel strip. Each of the layers in a section has a length dimension measured between the transversely-extending edges of the layer located at opposite ends of the section. The layers in the inner section of a group have substantially equal lengths, and the layers in the outer section of said group have substantially equal lengths of a greater value than the lengths of the layers in the inner section. When the groups are wrapped about the core window, the following relationships are present. At one end of each group the transversely-extending edges of all the layers in said group are substantially aligned to form a smooth edge.

Abstract: This apparatus acts to fold over along a crease line an edge portion of a thin sheet of material, such as aluminum foil. On opposite sides of the crease line, the sheet includes a body portion and an edge portion, which edge portion is in-line with the body portion when the sheet is unfolded and is doubled back on the body portion when the sheet is fully folded.A pair of support rolls have spaced-apart axes and peripheries over which the sheet is caused to pass so that a region of the sheet extends between the peripheries. During the folding process the sheet is caused to travel in a direction extending from a first to a second one of the support rolls. An air film roll is positioned between the support rolls and exerts on the region of the traveling sheet between the support rolls a force that causes the body portion of the sheet in this region to be deflected toward the zone between the support roll axes.

Abstract: This transformer core comprises superposed groups of amorphous steel strip wrapped about the core window, each group comprising an inner section and an outer section disposed in superposed relationship, and each section comprising many thin layers of amorphous steel strip. Each of the layers in a section has a length dimension measured between the transversely-extending edges of the layer located at opposite ends of the section. The layers in the inner section of a group have substantially equal lengths, and the layers in the outer section of said group have substantially equal lengths of a greater value than the lengths of the layers in the inner section. At one end of each group the transversely-extending edges of all the layers in said group are substantially aligned to form a smooth edge.

Abstract: This transformer comprises a tank containing insulating liquid and an amorphous alloy core within the liquid comprising spaced-apart upper and lower yokes and two spaced-apart legs at opposite ends of the yokes. Coil structure surrounds the legs, locating the yokes outside the coil structure and locating the legs within two windows of the coil structure. A box-like enclosure primarily of electrical insulating material encloses the lower yoke and is positioned to capture therein chips of amorphous alloy that might become detached from the core and fall toward the bottom of the tank.A first portion of the box-like enclosure extends between the two windows of the coil structure and is held against the bottom of the coil structure. This first portion includes flaps that are folded upwardly into the two coil windows to form liners for these windows, but still leaving clearance space within the windows around the core legs through which detached chips may fall past the liners into the box portion of the enclosure.

Abstract: Groups of amorphous steel strips, cut to appropriate length from a composite strip, are stacked in longitudinally-staggered relationship to form packets. The groups are made up by a process that comprises a pre-spooling operation that results in the strips and groups in each packet adhering together, even though dry. The individual packets are fed successively into a belt nester that includes a rotatable arbor and wrapping means that wraps the packets in superposed relationship about the arbor as the arbor rotates, thereby building up a hollow core form. The above-described adhesive effect precludes the strips and groups from shifting longitudinally while the packets are being wrapped about the arbor.

Abstract: This lightning arrester includes (i) a tubular housing comprising a plurality of tubular sections disposed in telescoping aligned relationship to define an internal chamber and (ii) a stack of arrester elements located within this chamber. Locking means between adjacent telescoping sections holds the sections together in aligned relationship.Each locking means between adjacent sections comprises radially-projecting lugs on a telescoping portion of one of the sections and generally L-shaped slots in a telescoping portion of the other of the sections. The lugs fit into the slots and are displaced into locking portions of the slots by twisting motion of one of the adjacent sections relative to the other.In one embodiment, the housing sections are molded components of polymeric material and the lugs are also of polymeric material and are integral portions of the tubular housing on which the lugs are located.

Abstract: This method of making a transformer core from strips of amorphous metal utilizes an arbor that has a longitudinal axis and an external surface surrounding the axis that includes a portion of concave configuration forming a depression in the external surface. A plurality of packets are assembled, each packet comprising a plurality of groups of amorphous metal strips, the groups in each packet (i) comprising many aligned amorphous metal strips and (ii) having transversely-extending edges that are staggered with respect to each other longitudinally of the packet. The packets are sequentially wrapped about the arbor in superposed relationship while the arbor is held against rotation, thereby building up a core form about the arbor. Each packet prior to its being wrapped about the arbor is located so that when wrapped, opposite ends of each group meet in overlapping relationship in a location angularly aligned with said surface portion of concave configuration.

Abstract: This method is practiced by first providing a plurality of spools of amorphous steel strip in each of which the strip is wound in single-layer thickness. Then, in a pre-spooling machine, the single-layer thickness strips are unwound from said plurality of spools and combined to form strip of multiple-layer thickness which is wound onto a plurality of master reels, on each of which the strip is wound in multiple-layer thickness. These master reels are then placed on a plurality of payoffs, and the multiple-layer thickness strip is unwound from these payoffs and combined into a composite strip that has a thickness in strip layers equal to the sum of the strip layers in the combined multiple-layer thickness strips. Then the composite strip is cut into a plurality of sections, or lengths, of composite strip, and with these sections a hollow core form is constructed, which form has a window about which the sections are wrapped.

Abstract: Groups of amorphous steel strips, cut to appropriate length from a composite strip, are stacked in longitudinally-staggered relationship to form packets. The groups are made up by apparatus preforming a process that comprises a pre-spooling operation that results in the strips and groups in each packet adhering together, even though dry. The individual packets are fed successively into a belt nester that includes a rotatable arbor and wrapping means that wraps the packets in superposed relationship about the arbor as the arbor rotates, thereby building up a hollow core form. The above-described adhesive effect precludes the strips and groups from shifting longitudinally while the packets are being wrapped about the arbor.

Abstract: A tubular fuseholder housing carries two sets of generally-stationary contacts located at points spaced apart along the length of the housing. Within the housing is a fuse comprising a cartridge and, at opposite ends of the cartridge, terminal contacts for respectively engaging the stationary contacts when the cartridge is fully inserted into the housing. An insulating operating rod within the fuseholder housing is coupled to the fuse cartridge and extends toward the outer end of the housing.Actuation of the operating rod separates the terminal contacts from the generally-stationary contacts and draws electric arcs between these contact. Closely adjacent the individual contacts of each set of stationary contacts and angularly aligned with the individual contacts, supplemental exhaust ports are provided in the fuseholder housing. The fuseholder housing normally contains dielectric liquid covering the fuse which is vaporizable by the arcs to generate gases that are exhausted through the supplemental ports.

Abstract: A chemically augmented electrical fuse is triggered using optical energy acquired as a result of the triggering of another chemically augmented fuse. Light energy created as a result of the detonation of the first chemically augmented fuse is conducted to an exothermic pellet of a second fuse. The light energy received at the second fuse is focused on the exothermic pellet by means of a lens. The focused light energy causes the detonation of the exothermic pellet in the second fuse thereby causing the interruption of current through that fuse.

Abstract: Certain transformer cores are manufactured by wrapping about an arbor packets of amorphous metal strip, each packet comprising a plurality of groups of strip, and each group comprising many thin layers of strip.

Abstract: This method for making a transformer core comprises the following steps: (a) providing amorphous metal strip material, (b) winding said strip material onto an arbor in superposed layers, thereby forming a multi-layered core form, (c) applying coats of powder to said strip material before the strip material is wound onto the arbor, thereby causing predetermined adjacent ones of said layers by to be separated small distances to reduce the space factor of the core form, and (d) annealing the core form while said powder coatings are present between adjacent layers, thus enabling the powder to lessen the tendency of adhesions to develop between adjacent layers of amorphous metal during annealing.

Abstract: This sectionalizer comprises a movable current-carrying member carrying a first contact that is engageable with a second contact when the sectionalizer is closed. Overcenter toggle means holds the current-carrying member in its closed position when the toggle means is in an overcenter condition but is ineffective to hold the current-carrying member in said closed position when the toggle means is driven out of its overcenter condition. Electronic control means develops a pulse of electrical energy when predetermined conditions have occurred in the circuit through the sectionalizer.

Abstract: In this method of manufacturing an amorphous metal transformer core, there is provided a core form that comprises sections of amorphous metal strip wrapped about the core window, the strip sections having edges at laterally opposite sides thereof and the core form having at its laterally opposed sides a pair of faces where the edges of the strip sections are located. This core form is subjected to an annealing operation to relieve stresses therein. Then, the strip sections are displaced with respect to each other in a first lateral direction to develop a telescoping relationship between juxtaposed strip sections that disrupts short circuiting adhesions between juxtaposed strip sections that had developed during the annealing step. Thereafter, the strip sections are returned in a lateral direction opposite to the first lateral direction to restore their edges to substantially their normal, or original, positions.Disrupting the short circuiting adhesions results in reduced core loss in the final product, i.e.

Abstract: This support is for mounting on structure of electrical apparatus a fuse or other device that comprises a cylindrical tube. The support comprises a base adapted to be secured to said structure, the base having a length and a width dimension. Two legs project laterally from the base at its longitudinally-opposite ends, each leg comprising a body portion that has a proximate end and a distal end. The base and the legs are of rigid polymeric insulating material, and the body portion of each leg is integrally joined to the base at the proximate end of the body portion. At its distal end the body portion of each leg carries a flange that projects from the body portion longitudinally with respect to the base. Each flange has a concave arcuate surface facing away from the base that is adapted to receive a portion of the above cylindrical tube. The arcuate surface includes a first curved portion for receiving a relatively large diameter tube and another curved portion for receiving a relatively small diameter tube.

Abstract: This separable electrical connector module, which is movable through an operating stroke and is adapted to couple with a mating module, comprises: (a) a connector member including a copper portion containing a hole having a central longitudinal axis and internal threads surrounding the axis, and (b) a copper contact rod having one end that is externally threaded to provide external threads that mate with said internal threads and an opposite end adapted to engage a contact within the mating module.