An insulator pin for overhead electrical lines has a frangible portion. The pin has an elongate support for attachment to an electrical distribution pole and a body. The body has a connector for an insulator, a frangible portion and an elongate support holding portion from which the elongate support extends. Preferably the elongate support is a bolt. The frangible portion permits the body to break into two pieces for preventing damage to electrical distribution poles from forces transverse to the overhead electrical line. The frangible portion is located between the connector and the elongate support holding portion. The insulator pin may be attached to an electrical distribution pole to protect the pole from forces transverse to an overhead electrical lines supported by the pole. A method of making the insulator pin by molding is disclosed.
Apparatus for detecting electrical fault includes a voltage monitor provided at each of the distribution circuits for monitoring a voltage in a corresponding distribution circuit, a controller in communication with each of the voltage monitor for receiving the voltage monitored and transmitted by the voltage monitors, and a fuse isolator configured to electrically connect the primary tap to a high voltage on the power distribution system and electrically disconnect the primary tap from the high voltage on power distribution system when activated. A fuse isolator actuator in communication with the controller is provided for activating the fuse isolator responsive to a control signal from the controller when a fault in the primary tap is detected by the controller, which determines that a fault exists in the primary tap based on the voltages monitored by the plurality of voltage monitors.
H02H 3/10 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge sensibles de plus à quelque autre condition électrique anormale
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H02H 3/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails avec signalisation ou supervision additionnée à la déconnexion, p.ex. pour indiquer que l'appareil de protection a fonctionné
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
H01H 75/04 - Mécanismes à réarmement pour refermer automatiquement un nombre limité de fois
H01H 85/042 - Construction ou structure générales de fusibles haute tension, c. à d. au-dessus de 1000 V
H01H 85/143 - Contacts électriques; Fixation d'éléments fusibles sur de tels contacts
3.
Apparatus for isolating high impedance fault in multi-tap electrical power distribution system
Apparatus detects an electrical fault in a primary tap having a plurality of distribution transformers each provided in a distribution circuit along a length of the primary tap, on a power distribution system. The apparatus includes a voltage monitor provided at each of the distribution circuits for monitoring a voltage in a corresponding distribution circuit, a controller in communication with each of the voltage monitor for receiving the voltage monitored and transmitted by the voltage monitors, and a fuse isolator configured to electrically connect the primary tap to a high voltage on the power distribution system and electrically disconnect the primary tap from the high voltage on power distribution system when activate. A fuse isolator actuator in communication with the controller is provided for activating the fuse isolator responsive to a control signal from the controller when a fault in the primary tap is detected by the controller, which determines that a fault exists in the primary tap based on the voltages monitored by the plurality of voltage monitors.
H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
H02H 3/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails avec signalisation ou supervision additionnée à la déconnexion, p.ex. pour indiquer que l'appareil de protection a fonctionné
G01R 31/28 - Test de circuits électroniques, p.ex. à l'aide d'un traceur de signaux
4.
APPARATUS FOR ISOLATING HIGH IMPEDANCE FAULT IN MULTI-TAP ELECTRICAL POWER DISTRIBUTION SYSTEM
Apparatus detects an electrical fault in a primary tap having a plurality of distribution transformers each provided in a distribution circuit along a length of the primary tap, on a power distribution system. The apparatus includes a voltage monitor provided at each of the distribution circuits for monitoring a voltage in a corresponding distribution circuit, a controller in communication with each of the voltage monitor for receiving the voltage monitored and transmitted by the voltage monitors, and a fuse isolator configured to electrically connect the primary tap to a high voltage on the power distribution system and electrically disconnect the primary tap from the high voltage on power distribution system when activate. A fuse isolator actuator in communication with the controller is provided for activating the fuse isolator responsive to a control signal from the controller when a fault in the primary tap is detected by the controller, which determines that a fault exists in the primary tap based on the voltages monitored by the plurality of voltage monitors.
H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
H02H 7/04 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour transformateurs
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
09 - Appareils et instruments scientifiques et électriques
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
20 - Meubles et produits décoratifs
22 - Cordes; filets; tentes, auvents, voiles et sacs; matières de rembourrage
Produits et services
Metal fasteners, namely, nails, screws, metal staples for
attachment on electric or telephone poles; metal hardware
for use with wood pole structures, namely, double coil lock
washers to accommodate wood shrinkage and expansion; metal
boxes, namely, empty metal electrical enclosures for housing
underground cable connections, cable television junctions,
electrical junctions, power outlets, transformers, general
duty electrical switches, safety switches, test switches,
conduit hubs, wireway gutters, electrical disconnect
devices, control panels, instrumentation panels; metal pole
riser and accessories thereof, namely, steel u guards and
adapters thereof, back plates, and fasteners designed to
guard or protect electrical conductors or cables suspended
from or mounted on utility poles; steel cable support
brackets and steel wall channels both for use in supporting
electrical cables in underground manholes and vaults as used
in the electrical and utility industries. Hand tools. Service pedestals enclosures, namely, enclosures for the
distribution of metered and unmetered underground electric
power to residential homes; power and service pedestals,
namely, electrical outlets, electrical service outlets,
electrical power outlets, electrical outlets for street
lighting or recreation vehicles; spring loaded thermal
sensing grounding device to isolate highrise building
overloaded transformer; portable common winding transformer
for temporary electrical service restoration; network
protector temporary bypass; portable electrical three-phase
contractor for electric utility safety loadflow control;
electrical system for de-energizing high voltage wire on the
ground when there is insufficient fault current to operate
the normal isolation device; plastic pedestal enclosures for
distribution of electric power underground. Plastic cable protector sleeves of use in supporting
electrical cables in the electrical and utility industries;
non-metal cable guards, adapters, and back plates mounted on
poles (terms too vague in the opinion of the International
Bureau – Rule 13 (2) (b) of the Common Regulations). Plastic pole risers and accessories thereof, namely, plastic
u guards and adapters thereof, back plates, and fasteners
designed to guard or protect electrical conductors or cable
suspended from or mounted on wood poles; plastic guy
markers; plastic wire and cable location markers; plastic
wildlife guards (terms too vague in the opinion of the
International Bureau – Rule 13 (2) (b) of the Common
Regulations); plastic cable support brackets and plastic
wall channels all for use in supporting electrical cables in
the electrical and utility industries; plastic cable
saddles, and plastic cable clamps all of use in supporting
electrical cables in the electrical and utility industries. Polypropylene cable ties for attachment on various products.
09 - Appareils et instruments scientifiques et électriques
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
20 - Meubles et produits décoratifs
22 - Cordes; filets; tentes, auvents, voiles et sacs; matières de rembourrage
Produits et services
(1) Metal fasteners, namely, nails, screws, metal staples for attachment on electric or telephone poles; metal hardware for use with wood pole structures, namely, double coil lock washers to accommodate wood shrinkage and expansion; metal boxes, namely, empty metal electrical enclosures for housing underground cable connections, cable television junctions, electrical junctions, power outlets, transformers, general duty electrical switches, safety switches, test switches, conduit hubs, wireway gutters, electrical disconnect devices, control panels, and instrumentation panels; metal pole riser and metal accessories thereof, namely, steel u guards, namely, steel riser guards in the electrical and utility industries, and adapters thereof, back plates, and fasteners designed to guard or protect electrical conductors or cables suspended from or mounted on utility poles; steel cable support brackets and steel wall channels both for use in supporting electrical cables in underground manholes and vaults as used in the electrical and utility industries.
(2) Plastic insulating cable protector sleeves, plastic insulating cable saddles, and all of use in supporting electrical cables in the electrical and utility industries; non-metal cable guards, adapters, and back plates mounted on utility poles to protect the utility poles from adverse weather conditions.
(3) Plastic pedestal enclosures for distribution of electric power underground; plastic pole risers and accessories thereof, namely, plastic u guards and adapters thereof, back plates, and fasteners designed to guard or protect electrical conductors or cable suspended from or mounted on wood poles; plastic guy markers; plastic wire and cable location markers; plastic wildlife guards for electrical cables and equipment; plastic cable support brackets and plastic wall channels all for use in supporting electrical cables in the electrical and utility industries; non-metal cable guards, adapters, and back plates mounted on poles; plastic cable clamps for use in supporting electrical cables in the electrical and utility industries.
(4) Polypropylene cable ties for attachment on various cable products.
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
20 - Meubles et produits décoratifs
22 - Cordes; filets; tentes, auvents, voiles et sacs; matières de rembourrage
Produits et services
Metal fasteners, namely, nails, screws, metal staples for attachment on electric or telephone poles; metal hardware for use with wood pole structures, namely, double coil lock washers to accommodate wood shrinkage and expansion; Metal boxes, namely, empty metal electrical enclosures for housing underground cable connections, cable television junctions, electrical junctions, power outlets, transformers, general duty electrical switches, safety switches, test switches, conduit hubs, wireway gutters, electrical disconnect devices, control panels, and instrumentation panels; metal pole riser and metal accessories thereof, namely, steel u guards, namely, steel riser guards in the electrical and utility industries, and adapters thereof, back plates, and fasteners designed to guard or protect electrical conductors or cables suspended from or mounted on utility poles; steel cable support brackets and steel wall channels both for use in supporting electrical cables in underground manholes and vaults as used in the electrical and utility industries Plastic insulating cable protector sleeves, plastic insulating cable saddles, and all of use in supporting electrical cables in the electrical and utility industries; non-metal cable guards, adapters, and back plates mounted on poles Plastic pedestal enclosures for distribution of electric power underground; plastic pole risers and accessories thereof, namely, plastic u guards and adapters thereof, back plates, and fasteners designed to guard or protect electrical conductors or cable suspended from or mounted on wood poles; plastic guy markers; plastic wire and cable location markers; plastic wildlife guards for electrical cables and equipment; plastic cable support brackets and plastic wall channels all for use in supporting electrical cables in the electrical and utility industries; non-metal cable guards, adapters, and back plates mounted on poles; plastic cable clamps for use in supporting electrical cables in the electrical and utility industries polypropylene cable ties for attachment on various cable products
An electrical cable support system for use with large diameter, heavy electrical cables disposed in confined spaces includes as least one support structure- mounted stanchion coupled to a generally triangular support bracket adapted for receiving and supporting one or more electrical cables. The coupling between the stanchion and support bracket allows for pivoting displacement of the support bracket on the wall- mounted stanchion to accommodate movement of the cables during electrical load cycling. The support bracket includes a first upper generally horizontal linear arm adapted for receiving and supporting one or more electrical cables, a second lower, inclined arm having plural steps proceeding downward toward the stanchion to provide an increased space below the support bracket to accommodate increased numbers of electrical cables. The support bracket is tapered along its horizontal and vertical axes to better distribute cable weight over the support bracket's entire length and height, and includes an inner apertured portion comprised of crisscrossed trusses for reduced weight and increased strength.
F16L 3/227 - Supports pour tuyaux, pour câbles ou pour conduits de protection, p.ex. potences, pattes de fixation, attaches, brides, colliers spécialement adaptés pour supporter un certain nombre de tuyaux parallèles séparés par un espace chaque support ayant une base transversale pour supporter les tuyaux chaque tuyau étant supporté par un élément séparé fixé sur la base
H02G 3/02 - Installations de câbles ou de lignes électriques ou de leurs tubes de protection dans ou sur des immeubles, des structures équivalentes ou des véhicules - Détails
10.
APPARATUS FOR ISOLATING A NETWORK PROTECTOR IN AN ELECTRIC POWER DISTRIBUTION NETWORK
In an electric power distribution network power is provided via high voltage cables carrying large secondary distribution currents which are connected to various electrical components such as transformers and network protectors which detect and accommodate secondary network power flow and problems such as network component malfunctioning or failure, and dangerous operating conditions such as an out of phase current status within the three or four high voltage primary power conducting cables arranged in parallel to share the load. network protectors address, among other things, a voltage out of phase situation in the cables which can lead to dangerous interruption conditions and result in damage to, or destruction of, the power distribution network and safety to the general public. The present invention addresses the problems associated with a faulty or failed network protector which permits continuous reversal in the direction of power (current) flow. Isolation of the problem network protector is achieved by transferring its load to associated network protectors on the secondary network to allow for safe servicing, or removal and replacement, of the hung-up network protector. The inventive electric network protector protection system automatically accommodates either 120 volt or 277 volt network systems, and further contemplates an arrangement for safely and securely connecting the network protector isolator's bus bar to a temporary power cable connected to contactors which can isolate a defective network protector from its associated network transformer.
H02H 3/05 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails avec des moyens pour accroître la fiabilité, p.ex. dispositifs redondants
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
11.
Apparatus for isolating a network protector in an electric power distribution network
An apparatus for isolating a malfunctioning network protector from the power distribution network and for allowing the network protector to be safely reset. The apparatus includes: a 3 phase controller coupled by parallel single phase poles in plural contactors to the fuse link and adapted to receive an electric load current flowing in reverse through the network power transformer; a remote controlled switch coupled to the controller for switching the electric load current from the network protector via the controller to the network bus, with the controller then carrying the electric load current in parallel with the network protector fuse link; and visual indicators coupled to the controller for showing when the remote controlled switch has been activated to transfer the load current from the fuse links to the controller and when the electric load current has been transferred from the controller to the network bus.
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H01R 13/207 - Broches, lames ou alvéoles conformés ou ayant une pièce séparée en vue de retenir ensemble les parties en fonctionnement par connexion vissée
An electrical cable support system for use with large diameter, heavy electrical cables disposed in confined spaces includes as least one support structure-mounted stanchion coupled to a generally triangular support bracket adapted for receiving and supporting one or more electrical cables. The coupling between the stanchion and support bracket allows for pivoting displacement of the support bracket on the wall-mounted stanchion to accommodate movement of the cables during electrical load cycling. The support bracket includes a first upper generally horizontal linear arm adapted for receiving and supporting one or more electrical cables, a second lower, inclined arm having plural steps proceeding downward toward the stanchion to provide an increased space below the support bracket to accommodate increased numbers of electrical cables. The support bracket is tapered along its horizontal and vertical axes to better distribute cable weight over the support bracket's entire length and height, and includes an inner apertured portion comprised of crisscrossed trusses for reduced weight and increased strength.
A high impedance fault isolation system (HIFIS) identifies, isolates and dissipates high impedance, low current faults which occur within an individual tap, or branch, of an electric power distribution system using only portions of the tap affected. A master meter, or father smart meter (FSM), on the affected tap sends a coded signal to an antenna receiver combined with a microprocessor and chip which operates an electromagnetic control (EMC) grounding spring switch which isolates the downed primary conductor by causing the distribution system protecting device, i.e., a high voltage fuse or recloser, to de-energize the downed primary wire. A fire door sensor circuit then receives the trip signal from the microprocessor, causing the fire door sensor to melt open and release a shorting spring, in initiating operation of an expulsion fuse or recloser, which kills the downed live wire.
G01R 31/00 - Dispositions pour tester les propriétés électriques; Dispositions pour la localisation des pannes électriques; Dispositions pour tests électriques caractérisées par ce qui est testé, non prévues ailleurs
H02H 7/22 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour dispositifs de commutation
A low fault current isolation arrangement senses a loss of voltage and automatically isolates and de-energizes a down live primary wire if overcurrent protection devices have not cleared the high impedance fault in an electric power distribution network. Incorporating an operator selectable time delay response, the low fault current isolation arrangement permits overcurrent protection devices to attempt to detect and shut down the affected conductor, and then isolates and shuts down the low current fault if the overcurrent devices are not successful. The isolation arrangement continuously monitors AC voltage as remotely provided by smart meters even after a fault location is de-energized, and serves as a back up, and not as a replacement, for existing overcurrent protection schemes. A host computer operates in conjunction with plural smart meters each coupled to an associated customer distribution transformer in conjunction with the fault isolator to detect and shut down high impedance faults.
H02H 3/10 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge sensibles de plus à quelque autre condition électrique anormale
H01H 85/041 - Fusibles, c. à d. organes épuisables du dispositif de protection, p.ex. cartouches caractérisés par leur type
H01H 85/38 - Moyens pour éteindre ou supprimer l'arc
G01R 1/04 - Boîtiers; Organes de support; Agencements des bornes
H02H 3/093 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge avec des moyens de temporisation
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
H02H 7/28 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits pour réseaux maillés
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
H01R 13/71 - Eléments de contact des pièces de couplage agissant comme interrupteur
G01R 22/06 - Dispositions pour la mesure de l'intégrale dans le temps d'une puissance électrique ou d'un courant, p.ex. compteurs d'électricité par des méthodes électroniques
A low fault current isolation arrangement senses a loss of voltage and automatically isolates and de-energizes a down live primary wire if overcurrent protection devices have not cleared the high impedance fault in an electric power distribution network. Incorporating an operator selectable time delay response, the low fault current isolation arrangement permits overcurrent protection devices to attempt to detect and shut down the affected conductor, and then isolates and shuts down the low current fault if the overcurrent devices are not successful. The isolation arrangement continuously monitors AC voltage as remotely provided by smart meters even after a fault location is de-energized, and serves as a back up, and not as a replacement, for existing overcurrent protection schemes. A host computer operates in conjunction with plural smart meters each coupled to an associated customer distribution transformer in conjunction with the fault isolator to detect and shut down high impedance faults.
H01R 13/71 - Eléments de contact des pièces de couplage agissant comme interrupteur
G01R 1/04 - Boîtiers; Organes de support; Agencements des bornes
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
H02H 3/10 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge sensibles de plus à quelque autre condition électrique anormale
H02H 3/093 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge avec des moyens de temporisation
H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
H02H 7/28 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits pour réseaux maillés
H01H 85/041 - Fusibles, c. à d. organes épuisables du dispositif de protection, p.ex. cartouches caractérisés par leur type
H01H 85/38 - Moyens pour éteindre ou supprimer l'arc
G01R 22/06 - Dispositions pour la mesure de l'intégrale dans le temps d'une puissance électrique ou d'un courant, p.ex. compteurs d'électricité par des méthodes électroniques
An electric cable saddle, or support, arrangement includes a housing having an upper recessed portion adapted to receive and support one or more electrical cables in a fixed, stable manner. Plural apertures disposed on upper portions of the housing on opposed sides of the cable(s) and aligned generally transverse to the length of the cable(s) are adapted to receive a flexible, high strength tie member, or strap, for securely attaching the cable(s) to an upper portion of the housing. A slot disposed in lower portion of the housing and also aligned generally transverse to the length of the cable(s) is adapted to receive a structural support member for supporting the housing and cable(s). A retaining member also disposed in a lower portion of the housing is moveable adjacent to or into engagement with the support member for fixed positioning of housing on the support member.
H02G 3/02 - Installations de câbles ou de lignes électriques ou de leurs tubes de protection dans ou sur des immeubles, des structures équivalentes ou des véhicules - Détails
H02G 3/06 - Installations de câbles ou de lignes électriques ou de leurs tubes de protection dans ou sur des immeubles, des structures équivalentes ou des véhicules - Détails assurant la continuité électrique dans le joint
H02G 9/10 - Installations de lignes ou de câbles électriques dans ou sur la terre ou sur l'eau dans des chambres de câbles, p.ex. dans un trou d'homme
An electric cable saddle, or support, arrangement includes a housing having an upper recessed portion adapted to receive and support one or more electrical cables in a fixed, stable manner. Plural apertures disposed on upper portions of the housing on opposed sides of the cable(s) and aligned generally transverse to the length of the cable(s) are adapted to receive a flexible, high strength tie member, or strap, for securely attaching the cable(s) to an upper portion of the housing. A slot disposed in lower portion of the housing and also aligned generally transverse to the length of the cable(s) is adapted to receive a structural support member for supporting the housing and cable(s). A retaining member also disposed in a lower portion of the housing is moveable adjacent to or into engagement with the support member for fixed positioning of housing on the support member.
An electric cable saddle, or support, arrangement includes a housing having an upper recessed portion adapted to receive and support one or more electrical cables in a fixed, stable manner. Plural apertures disposed on upper portions of the housing on opposed sides of the cable(s) and aligned generally transverse to the length of the cable(s) are adapted to receive a flexible, high strength tie member, or strap, for securely attaching the cable(s) to an upper portion of the housing. A slot disposed in a lower portion of the housing and also aligned generally transverse to the length of the cables(s) is adapted to receive a structural support member for supporting the housing and cable(s). A retaining member also disposed in a lower portion of the housing is moveable adjacent to or into engagement with the support member for fixed positioning of the housing on the support member.
H01B 3/30 - Isolateurs ou corps isolants caractérisés par le matériau isolant; Emploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances organiques cires
H02G 9/08 - Installations de lignes ou de câbles électriques dans ou sur la terre ou sur l'eau dans des tunnels
H02G 3/00 - Installations de câbles ou de lignes électriques ou de leurs tubes de protection dans ou sur des immeubles, des structures équivalentes ou des véhicules
A low fault current isolation arrangement senses loss of voltage and automatically isolates and de-energizes a down live primary wire if overcurrent protection devices have not cleared the high impedance fault in an electric power distribution network. Incorporating an operator selectable time delay response, the low fault current isolation arrangement permits overcurrent protection devices to attempt to detect and shut down the affected conductor, and isolates and shuts down the low current fault if the overcurrent devices are not successful. The isolation arrangement continuously monitors AC voltage as remotely provided by smart meters even after a fault location is de-energized, and serves as a back up, and not as a replacement, for existing overcurrent protection schemes. A host computer operates in conjunction with plural smart meters each coupled to an associated customer distribution transformer in conjunction with the fault isolator to detect and shut down high impedance faults.
H02H 7/00 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan
A cable tie of unitary structure includes a flexible, elongated band having a linear array of first inclined teeth on a first surface thereof and a retaining housing and a tapered portion on opposed ends of the band. The housing includes an elongated slot aligned with the band for receiving the band's tapered end portion in sliding engagement to form a closed loop for receiving and retaining plural aligned elongated elements such as cables. Upper and lower surfaces of the housing include respective plural spaced slots defined by respective upper and lower spaced crossed members aligned transverse to the length of the band when inserted in the slot. Inner distal ends of each of the lower cross members are each provided with respective plural sets of second inclined teeth each adapted to engage a respective one of the first teeth on the band to securely maintain the cables in fixed position.
B65D 63/10 - MANUTENTION; EMBALLAGE; EMMAGASINAGE; MANIPULATION DES MATÉRIAUX DE FORME PLATE OU FILIFORME ÉLÉMENTS D'EMBALLAGE; PAQUETS Éléments d'emballage flexibles allongés, p.ex. courroies pour lier ou pour soutenir des objets Éléments filamenteux, p.ex. cordons, fils ou fils métalliques; Jonctions de leurs extrémités
