A power cord includes an outer coating layer. Live, neutral, and ground wires are in the outer coating layer. The live wire includes a core and first insulation layer. Live wire shielding and second insulation layers are successively sheathed outside the core. The neutral wire includes a core and first insulation layer. Neutral wire shielding and second insulation layers are successively outside the neutral wire core. The ground wire includes a core and insulation layer sheathed outside the ground wire core. When the live and neutral wire shielding layers are broken or the live wire and its shielding layer are short-circuited, and the neutral wire and its shielding layer are short-circuited, the leakage protector detects an abnormal signal of the power cord and interrupts the electrical connection of the live and neutral wires, to prevent fire between the live and neutral wire cores after the power cord is broken.
H01B 9/02 - Câbles de transport d'énergie avec écrans ou couches conductrices, p. ex. en vue d'éviter des gradients de potentiel élevés
H02H 3/14 - 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 la présence d'une tension sur les pièces normalement au potentiel de la terre
2.
POWER CORD LEAKAGE DETECTION AND PROTECTION CIRCUIT
The invention discloses a power cord leakage detection and protection circuit, comprising a live wire, a neutral wire and a tripping coil, wherein a controlled switch controlled by the tripping coil is respectively provided on the live wire and the neutral wire; a shielded wire is respectively provided outside the live wire and the neutral wire; tail ends of the two shielded wires are connected; a shielded wire detection circuit respectively connected to head ends of the two shielded wires is provided between the live wire and the neutral wire for detecting whether the shielded wire is cracked; and the shielded wire detection circuit is connected with a control circuit for controlling the tripping coil to disconnect the controlled switch when the shielded wire is detected to be cracked, preventing the wire core from being exposed after the shielded wire is broken and the short-circuiting between the live wire and the neutral wire to cause a fire accident.
H02H 5/10 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une détérioration mécanique, p. ex. rupture de ligne, rupture de connexion de terre
G01R 31/58 - Test de lignes, de câbles ou de conducteurs
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 31/52 - Test pour déceler la présence de courts-circuits, de fuites de courant ou de défauts à la terre
3.
POWER CABLE OF WHICH ELECTRICAL LEAKAGE CAN BE DETECTED BY LEAKAGE PROTECTOR
A power cable of which electrical leakage can be detected by a leakage protector, comprising an outer sheath layer (1), a live wire, a neutral wire and a ground wire being arranged in the outer sheath layer (1). The live wire comprises a live wire core (21) and, sequentially sleeving the outer side of the live wire core (21), a live wire first insulation layer (22), a live wire shielding layer (23) and a live wire second insulation layer (24). The neutral wire comprises a neutral wire core (31) and, sequentially sleeving the outer side of the neutral wire core (31), a neutral wire first insulation layer (32), a neutral wire shielding layer (33), and a neutral wire second insulation layer (34). The ground wire comprises a ground wire core (41) and a ground wire insulation layer (42) sleeving the outer side of the ground wire core (41). When the live wire shielding layer (23) or the neutral wire shielding layer (33) breaks, or the live wire and the live wire shielding layer (23) are short-circuited, or the neutral wire and the neutral wire shielding layer (33) are short-circuited, a leakage protector detects an anomaly signal of the power cable, and cuts off the electric connection of the live wire and the neutral wire, thus preventing a fire caused by short-circuiting of the live wire core (21) and the neutral wire core (31) when the power cable is damaged.
H01B 7/32 - Conducteurs ou câbles isolés caractérisés par la forme avec dispositions pour détecter des défauts, p. ex. ruptures ou fuites
H01B 7/17 - Protection contre les dommages provoqués par des facteurs extérieurs, p. ex. gaines ou armatures
H01B 9/02 - Câbles de transport d'énergie avec écrans ou couches conductrices, p. ex. en vue d'éviter des gradients de potentiel élevés
H02H 3/14 - 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 la présence d'une tension sur les pièces normalement au potentiel de la terre
4.
POWER LINE ELECTRONIC LEAK DETECTION AND ELECTRONIC LEAK PROTECTION CIRCUIT
Disclosed in the present invention is a power line electronic leak detection and electronic leak protection circuit, comprising a live wire, a neutral wire, and a trip coil. The live wire and the neutral wire are respectively provided with controlled switch controlled by the trip coil; the outer sides of the live wire and the neutral wire are respectively provided with shielded cables; tail ends of two shielded cables are connected to each other; shielded cable detection circuits which are respectively connected to the front ends of the two shielded cables and are used for detecting whether the shielded cables are broken are provided between the live wire and the neutral wire; and a control circuit which controls the trip coil to turn off the controlled switch when it is detected that the shielded cables are broken is connected to the shielded cable detection circuits, so as to prevent a cable core from being exposed after the shielded cables are broken, resulting in short circuit between the live wire and the neutral wire to cause a fire accident.
H02H 3/32 - 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 la différence de tensions ou de courantsCircuits 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 un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant en des points correspondants des différents conducteurs d'un même système, p. ex. de courants dans des conducteurs d'aller et retour
H02H 5/10 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une détérioration mécanique, p. ex. rupture de ligne, rupture de connexion de terre
H02H 1/00 - Détails de circuits de protection de sécurité
09 - Appareils et instruments scientifiques et électriques
Produits et services
Voltage surge protectors; Electrical plugs; Electrical receptacles; Electromagnetic solenoids in the nature of coils and valves; Circuit breakers; Switches, electric; Junction boxes; Electrical connectors;
Electrical adapters; Movable sockets; Electric plugs; Battery chargers; Electric sockets; Plugboards
An electromagnetic leakage protection circuit, comprising a shell (1) provided therein with an alternating-current input interface (2) and an alternating-current output interface (3); a leakage switch (4) is provided between the alternating-current input interface (2) and the alternating-current output interface (3); a zero sequence current transformer (5) sleeved on an alternating-current power line for detecting the leakage current is provided between the leakage switch (4) and the alternating-current output interface (3); a diode (D1) is connected between two output ends of the zero sequence current transformer (5); a trip coil (L1) for controlling disconnection of the leakage switch (4) according to the leakage current detected by the zero sequence current transformer (5) is connected in parallel to the diode (D1), thereby realizing irrelevance to the power voltage value, and disconnecting a power switch when the leakage value reaches the setting value.
H02H 3/32 - 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 la différence de tensions ou de courantsCircuits 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 un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant en des points correspondants des différents conducteurs d'un même système, p. ex. de courants dans des conducteurs d'aller et retour
Disclosed is a current leakage protector. When a power-driven device leaks current and the leaked current reaches a set current leakage value, a tripping apparatus (7) performs an action to cut off a connection between three lines, i.e. a live line, a null line and a ground line, and a load of a power source, so as to play the role of protecting human safety and the power-driven device; and at the same time, when any power source line among the three lines, i.e. the live line, the null line and the ground line, is broken, the current leakage protector can cut off the power source, so as to prevent an electric shock accident occurring to a person caused by the fact that the live line is not broken. The current leakage protector has the advantages of a ground line being connected prior to live and null line connectors and being disconnected after the live and null line connectors.
A power plug, including: a shell, the shell having two sides, a reset button and a test button protruding from the first side, and a live wire pin and a neutral wire pin protruding from the second side; a circuit board; a stationary contact; a movable contact; a tripping device; a cross arm; and a push block. The stationary contact is connected with the live wire pin and the neutral wire pin; the movable contact can be connected to or disconnected from the stationary contact. The tripping device includes a sliding pedestal and a sliding part and controls the connection between the movable contact and the stationary contact. An elastic member is disposed on the push block. An ejector spring is disposed on one end of the movable armature. A reset spring is disposed between the sliding part and the sliding pedestal.
H02H 9/08 - Limitation ou suppression des courants de défaut à la terre, p. ex. bobine Petersen
H02H 3/06 - 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 reconnexion automatique
H01R 13/713 - Association structurelle avec des composants électriques incorporés avec interrupteur incorporé l'interrupteur étant un interrupteur de sécurité
H01R 24/30 - Pièces de couplage portant des broches, des lames ou des contacts analogues, assujetties uniquement à un fil ou un câble avec des contacts supplémentaires de mise à la terre ou de blindage
H01H 83/04 - Interrupteurs de protection, p. ex. disjoncteur ou relais de protection actionné par des conditions électriques anormales autres que seulement les courants excessifs actionnés par courant de défaut à la terre avec moyens de test indiquant l'aptitude de l'interrupteur ou relais de fonctionner correctement
A plug including a shell and a mounting body disposed inside the shell. The mounting body is provided with a first movable contact spring and a second movable contact spring, a phase contact and a zero contact, and a button assembly. A transverse block disposed above the first movable contact spring and the second movable contact spring includes a phase terminal and a zero terminal. The button assembly includes an electric magnet disposed on the mounting body and a sliding part having a cavity. The cavity of the sliding part is provided with a reset spring. A hook is disposed in a lower part of the cavity. The transverse block is connected with a pull block. An upper part of the pull block is connected with the electric magnet. The center of the pull block includes a limiting hole for accommodating the hook.
A power plug with a leakage protection function comprises a housing; a reset button and a test button, which are arranged on one side of the housing and protruded from the surface of the housing and on one side of the housing; a power line pin, a neutral line pin and a circuit board, which are arranged on the other side of the housing; a stationary contact connected with the neutral line pin and the power line pin; a movable contact, which can connect or disconnect with the stationary contact; a tripping device for controlling the connection or disconnection of the stationary contact and the movable contact. The stationary contact, the movable contact, and the tripping device are disposed in the housing. The power plug with the leakage protection function has excellent safety protection properties, a simple structure, a reasonable design, and is convenient to produce in batches. The plug can detect the leakage default of a power line in real time and cut the connection of a power and a load in time.
The present invention discloses a power plug providing leakage protection comprising a casing, reset button and test button provided to the surface of the top of the casing; wherein movable springs respectively connected to power supply live wire and neutral wire pins are fixedly provided to the bottom part of a circuit board, movable contact points have separate electrical connections with free ends of the movable springs, stationary contact points corresponding to the movable contact points are provided to the circuit board and connected to a loading power supply cable; and a tripping device capable of contacting or disconnecting the movable and stationary contact points is provided inside the casing. The present invention is safe; has strong protective performance, simple structure, and reasonable design, and is safe, suited for mass production, and able to detect a power cable leakage failure and promptly sever the loaded connection with the power supply.
H01H 3/14 - Organes moteurs, c.-à-d. pour actionner le mécanisme d'entraînement par une force mécanique extérieure à l'interrupteur adaptés pour être actionnés par une partie du corps humain autre que la main, p. ex. le pied
H01H 83/02 - Interrupteurs de protection, p. ex. disjoncteur ou relais de protection actionné par des conditions électriques anormales autres que seulement les courants excessifs actionnés par courant de défaut à la terre
A plug comprises a casing (3) and an installation body (4) on which a phase movable leaf spring (5) and a zero movable leaf spring (6) are installed. A transverse pressure block (8) which comprises a phase terminal (81) and a zero terminal (82) is arranged above the phase movable leaf spring (5) and the zero movable leaf spring (6). The phase terminal (81) and the zero terminal (82) are separated from a phase contact (7) and a zero contact (10) which are arranged on the installation body (4). A button assembly (11) arranged on the installation body (4) comprises a sliding member (112) which can slide up and down and is provided with a cavity. A reset spring (113) is arranged in the cavity of the sliding member (112). The transverse pressure block (8) is rotatably connected with a drawing block (115), the upper part of which is connected with an electromagnet (111). A clamp hook (114) arranged in the lower part of the cavity of the sliding member (112) can be clamped in a limiting hole (116) arranged in the middle part of the drawing block (115).
H01R 13/66 - Association structurelle avec des composants électriques incorporés
H01R 13/713 - Association structurelle avec des composants électriques incorporés avec interrupteur incorporé l'interrupteur étant un interrupteur de sécurité
A power plug with leakage protective function comprises a housing (1). A reset button (11) and a test button (12) are arranged on the top surface of the housing (1). A pair of movable anchors (7) are fixed on the bottom of a circuit board (5) which are connected electrically to a power live wire pin (2) and a neutral line pin (3) respectively. Movable contacts (71) are electrically connected to the free ends of the movable anchors (7) respectively. A pair of fixed contacts (51) corresponding to the movable contacts (71) are arranged on the circuit board (5). The fixed contacts (51) are connected to a power cable for connecting with a load. A tripping device (8) is provided in the housing (1) to make the movable contacts (71) and the fixed contacts (51) connect or disconnect each other.
H01R 13/66 - Association structurelle avec des composants électriques incorporés
H01R 13/70 - Association structurelle avec des composants électriques incorporés avec interrupteur incorporé
H01R 13/717 - Association structurelle avec des composants électriques incorporés avec une source lumineuse intégrée
H02H 3/14 - 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 la présence d'une tension sur les pièces normalement au potentiel de la terre
H01H 83/02 - Interrupteurs de protection, p. ex. disjoncteur ou relais de protection actionné par des conditions électriques anormales autres que seulement les courants excessifs actionnés par courant de défaut à la terre
A power plug with leakage protection function includes a housing (1), a reset button (11) and a testing button (12) provided on the top surface of the housing, a live line pin (2), a neutral line pin (4) and a ground line pin provided on the bottom of the housing. A circuit board (5) is provided inside the housing. A leakage protection circuit for testing the cable leakage fault of power output is provided on the circuit board. A trip device (7) for making a movable contact (742) and a static contact (723) contact or disconnect each other is provided inside the housing. The power plug can detect the cable leakage fault of power supply in real time and cut off the power supply in time.
H01R 13/66 - Association structurelle avec des composants électriques incorporés
H01R 13/70 - Association structurelle avec des composants électriques incorporés avec interrupteur incorporé
H02H 3/14 - 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 la présence d'une tension sur les pièces normalement au potentiel de la terre
