a), the second guide hole being provided in a direction in which the biasing force is reduced, to suppress rotational movement of the movable body (30) relative to the body portion (24).
H02S 40/34 - Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
2.
ELECTRICAL CONNECTION DEVICE, TERMINAL BLOCK INCLUDING SAME, PHOTOVOLTAIC POWER GENERATION SYSTEM, AND ELECTRICAL APPLIANCE
An electrical connection device (100) includes a male portion having a head (21) and a body (24), the head (21) being provided with a groove for inserting a driver, and the body (24) being provided with a first guide hole (26a) and a second guide hole (26b), which are formed from the bottom end of the body (24) and which penetrate the body (24) in a spiral manner; a female portion (116) provided with a hole (118) into which the body (24) is inserted; an elastic portion (40) that is disposed on an outer circumference of the body (24) when the body (24) is inserted into the hole (118); and a movable body (30) that is disposed under the elastic portion and that is fitted into the first guide hole (26a) so as to penetrate the same when the body (24) is inserted into the hole (118). A first conductive member (50) and a second conductive member (60) are interposed between the top end of the elastic portion (40) and the head (21). With the movable body (30) fitted in the first guide hole (26a), as the head (21) rotates relative to the hole (118) up to a predetermined rotation angle, the movable body (30) contacting the bottom end of the elastic portion (40) moves upward, whereby the urging force of the elastic portion (40) increases. When the rotation angle of the head (21) relative to the hole (118) exceeds the predetermined rotation angle mentioned above, the movable body (30) fits into an end (29) of the second guide hole (26b), which is provided in a direction for decreasing the urging force and which communicates with the first guide hole (26a), whereby the rotary movement of the movable body (30) relative to the body (24) is suppressed.
[Problem] To protect a switch or a device on an electric path to which a switch is connected from overheating by an occurrence of an arc, and prevent burn accidents on the electric path to which the switch is connected. [Solution] A switch, comprising a power supply-side terminal which is connected to a DC power supply, and a load-side terminal to which power from the DC power supply is outputted, further comprises: contact points which are inserted in the electric path which connects the power supply-side terminal and the load-side terminal, and which open and close the electric path between the DC power supply and the load; an arc detection circuit which outputs an arc detection signal when an arc discharge which is detected over the electric path is sustained for a prescribed time; and a trip unit, which opens the contact points when the arc detection signal is generated.
H01H 83/02 - Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
4.
CONNECTOR DEVICE ADAPTED TO CONNECT ELECTRIC POWER CABLES TOGETHER AND USED IN SOLAR ENERGY POWER GENERATION SYSTEM
A connector device adapted to connect electric power cables together and used in a solar energy power generation system, wherein connection between male and female connectors by claw engagement is not easily released. A strip-shaped engaging claw section (28) is formed on the outer surface of a tubular female housing (21), and an engagement section (18) with which the engaging claw section (28) engages is provided on the outer surface of a tubular male housing (11). The engaging claw section (28) has at the tip thereof a claw (29) projecting outward. The engagement section has an engagement strip (19) raised from a housing outer surface and extended in the circumferential direction of the housing. The engaging claw section (28) is passed through the inner side of the engagement strip (19), so that the claw of the engaging claw section is passed under the engagement strip and engaged with the engagement strip by outwardly acting elastic force of the engaging claw section. With the claw (29) engaged with the engagement strip (19), a cover (30) for covering the outer surface of the claw (29) and preventing the claw (29) from being pressed inward is mounted to the outer surface of the housing (11). The engagement between the engaging claw section and the engagement section is not released unless a fine pin (41) for releasing the engagement between the claw and the engagement section by pressing inward the engaging claw section is inserted between the cover (30) and the engaging claw section (28).
A condition of not permitting an increased temperature value of a diode to exceed the junction temperature is satisfied by a simple structure at a low cost. A plurality of countercurrent prevention diodes between terminal boards to which electrodes of solar cell modules are connected are connected in parallel. When an output current from the solar cell module flows in a circuit of the plurality of diodes connected in parallel, a current flowing in each diode is reduced by a factor of the number of diodes connected in parallel, for instance, when the three diodes are connected in parallel, the current becomes one third. When the value of the flowing current is reduced, a heating value is also reduced. A heat radiating piece is provided on the terminal board.
H01L 31/052 - Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
H01L 31/042 - PV modules or arrays of single PV cells
patents
