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1. 发明专利

DE69019184D1 未知
公开(公告)号：DE69019184D1
公开(公告)日：1995-06-14
申请号：DE69019184
申请日：1990-02-05
申请人： HITACHI LTD
发明人： SEKI TAKAHIDE , SEKI YASUHARU , TSUKUSHI MASANORI , ITOH SYUNJI , HONDA HARUO
IPC分类号： H01H33/90 , H01H33/91 , H01H33/915 , H01H33/98
摘要： A switch provided with a negative pressure chamber (15) is actuated in association with the separating operation of a movable contact (6). The negative pressure chamber (15) is connected to means (11) for supplying a fluid to the negative pressure chamber (15) so as to suppress the negative pressure in the negative pressure chamber (15) during the initial stage of the separating operation of the movable contact (6).

2. 发明专利

DE2627051A1 未知
公开(公告)号：DE2627051A1
公开(公告)日：1976-12-23
申请号：DE2627051
申请日：1976-06-16
申请人： HITACHI LTD
发明人： HONDA HARUO , ITOH HIROSHI
IPC分类号： H01H33/32 , F16K24/06 , F16K31/00 , F16K31/12

3. 发明专利

DE69420940D1 未知
公开(公告)号：DE69420940D1
公开(公告)日：1999-11-04
申请号：DE69420940
申请日：1994-12-14
申请人： HITACHI LTD
发明人： HOSODA MINORU , YOSHIDA TORU , OUCHI SHIGETOSHI , HONDA HARUO , FUJITA YASUNOBU , ICHIKAWA FUMIHISA , YAMADA KOUYA
IPC分类号： B60M3/02 , H02H3/02 , H02H7/26 , H02H7/30 , B60M3/00
摘要： A dc power supply circuit connects a plurality of first dc circuit breakers 3, 4 to a semi-conductor converter 1, returning to the semi-conductor converter 1 through a dc driving part such as an electric railcar 6 connected to each dc circuit breaker 3, 4. A second dc circuit breaker 9 of larger capacity than the first dc circuit breakers 3, 4 is provided in a return circuit 8 and opened when a short circuit current is detected. Current decreasing means 14 opens the second dc circuit breaker 9 to decrease the short circuit current which flows, for example, through a series-circuit of a resistor R and a reactor L.

4. 发明专利

GB2231444A "An interrupter with voltage transformer" 未知
公开(公告)号：GB2231444A
公开(公告)日：1990-11-14
申请号：GB9008440
申请日：1990-04-12
申请人： HITACHI LTD
发明人： ITOH SYUNJI , SEKI TAKAHIDE , HONDA HARUO
IPC分类号： H01H3/54 , H01H33/02 , H01H33/38 , H01H33/53
摘要： An interrupter unit comprising, an interrupter including at least two pairs of contacts, and an interrupter container surrounding the pairs of contacts, each of the pairs of contacts having a first contact and a second contact which contacts the first contact or is positioned away from the first contact so that electricity flows between the first contact and the second contact or is prevented from flowing between the first contact and the second contact, an electric actuator device for driving the pairs of contacts so that the second contacts contact the first contacts or are positioned away from the first contacts, and at least one voltage-transformer which transforms an input voltage and supplies a suitably transformed voltage to the electric actuator device so that the electric actuator device drives the pairs of contacts, wherein the interrupter unit further comprises an electrically grounded cover surrounding the interrupter and having first cover terminals which are electrically connected to the first contacts, respectively, and second cover terminals which are electrically connected to the second contacts, respectively, wherein, the electric actuator device and the voltage-transformer are located in a space formed between the electrically grounded cover and the interrupter, the voltage-transformer being electrically connected to at least one of the cover terminals of the electrically grounded cover to receive the input voltage. Therefore, the inventive interrupter unit may be smaller than a prior art interrupter unit, while maintaining the safe condition of the interrupter unit.

5. 发明专利

DE60038945D1 未知
公开(公告)号：DE60038945D1
公开(公告)日：2008-07-03
申请号：DE60038945
申请日：2000-08-10
申请人： HITACHI LTD , HITACHI ELECTRIC SYSTEM CO LTD
发明人： MUNAKATA NORIAKI , KUROSAWA YUKIO , HONDA HARUO , OOUICHI SHIGETOSHI , SHINOHARA MASAKI
IPC分类号： H01H33/66 , H01H33/14 , H01H33/985 , H01H33/16 , H01H33/42 , H01H33/59 , H01H33/666
摘要： An arc generating switching unit 2 which adds an electrical resistance in a circuit during current interruption to attenuate a current to be interrupted, a vacuum bulb 1 which is electrically connected in series with the arc generating switching unit 2 and interrupts the attenuated current and a current conducting switching unit 3 connected in parallel with the series circuit of the vacuum bulb 1 and the arc generating switching unit 2 are provided, and for current conduction the current conducting switching unit 3 is closed after the vacuum bulb 1 and the arc generating switching unit 2 are closed, and for current interruption after opening the current conducting switching unit 3, the vacuum bulb 1 and the arc generating switching unit 2 are opened. Thereby, a small sized power use circuit breaker which performs current conduction and interruption of a large current containing a DC component is obtained.

6. 发明专利

DE69302716T2 未知
公开(公告)号：DE69302716T2
公开(公告)日：1997-01-02
申请号：DE69302716
申请日：1993-01-28
申请人： HITACHI LTD
发明人： OUCHI SHIGETOSHI , HONDA HARUO , YOSHIDA TORU , KUGOH YUKIO , ICHIKAWA FUMIHISA , KANNO TUTOMU , ICHINOSE TAKASHI , TSUDA HIDEAKI
IPC分类号： H01H9/30 , H01H9/42 , H01H33/59 , H01H33/66
摘要： A commutating type DC circuit breaker arrangement comprising : a vacuum circuit breaker (7) having a movable electrode and stationary electrode; a series circuit (6) of a capacitor (8), a saturation reactor (9) and a commutating switch (10) which is connected in parallel with the vacuum circuit breaker; and means (21) for detecting a predetermined electrode open position at which a sufficient insulating distance between the movable electrode and the stationary electrode is maintained via movement of a predetermined position on an actuating rod for the movable electrode and for closing the commutating switch in response to the detection of the predetermined electrode open position.

7. 发明专利

DE69019314D1 未知
公开(公告)号：DE69019314D1
公开(公告)日：1995-06-14
申请号：DE69019314
申请日：1990-11-27
申请人： HITACHI LTD
发明人： SEKI TAKAHIDE , ITOU SYUNJI , HONDA HARUO , TSUBAKI TOHRU
IPC分类号： H01H33/98 , H01H33/02 , H01H33/90 , H01H33/91 , H01H33/915
摘要： A gas-blast load-break switch comprises a pressure storage chamber (13) for storing pressure of arc-extinguishing gas with arc energy generated by the disconnection between contacts (4, 7), and a suction chamber (14) including a piston (15) which is moved in connection with the cut-off movement of the movable contact (7). A gas flowing means (11) is provided such that the pressure raised by the arc energy is stored in the pressure storage chamber (13) before communicating the pressure storage chamber (13) and the suction chamber (14) and a gas chamber (22) formed on the side of the piston (15) opposite from the suction chamber (14). The volume of the gas chamber (22) is greater than those of the pressure storage chamber (13) and the suction chamber (14), and the distance of piston movement in the suction chamber (14) is longer than the contact length when the movable contact (7) is thrown into the fixed contact (4).

8. 发明专利

GB2231444B An interrupter with voltage transformer 未知
公开(公告)号：GB2231444B
公开(公告)日：1993-11-17
申请号：GB9008440
申请日：1990-04-12
申请人： HITACHI LTD
发明人： ITOH SYUNJI , SEKI TAKAHIDE , HONDA HARUO
IPC分类号： H01H3/54 , H01H33/02 , H01H33/38 , H01H33/53 , H02B13/00
摘要： An interrupter unit comprising, an interrupter including at least two pairs of contacts, and an interrupter container surrounding the pairs of contacts, each of the pairs of contacts having a first contact and a second contact which contacts the first contact or is positioned away from the first contact so that electricity flows between the first contact and the second contact or is prevented from flowing between the first contact and the second contact, an electric actuator device for driving the pairs of contacts so that the second contacts contact the first contacts or are positioned away from the first contacts, and at least one voltage-transformer which transforms an input voltage and supplies a suitably transformed voltage to the electric actuator device so that the electric actuator device drives the pairs of contacts, wherein the interrupter unit further comprises an electrically grounded cover surrounding the interrupter and having first cover terminals which are electrically connected to the first contacts, respectively, and second cover terminals which are electrically connected to the second contacts, respectively, wherein, the electric actuator device and the voltage-transformer are located in a space formed between the electrically grounded cover and the interrupter, the voltage-transformer being electrically connected to at least one of the cover terminals of the electrically grounded cover to receive the input voltage. Therefore, the inventive interrupter unit may be smaller than a prior art interrupter unit, while maintaining the safe condition of the interrupter unit.

9. 发明专利

DE4304863A1 Commutating constant voltage circuit breaker - blocks flow of commutator current from commutator circuit to load in unloaded open operating condition 未知
公开(公告)号：DE4304863A1
公开(公告)日：1993-08-26
申请号：DE4304863
申请日：1993-02-17
申请人： HITACHI LTD
发明人： OHDE SHINICHI , OUCHI SHIGETOSHI , HONDA HARUO , YOSHIDA TORU , KANNO TUTOMU , KUGOH YUKIO
IPC分类号： H01H33/59
摘要： The circuit breaker has a commutator circuit (2, 3, 4) connected in parallel with a main contact (1). The latter (1) is connected between a constant voltage supply (11) and a load (12). The commutator circuit (2, 3, 4) has a capacitor (2), an inductor (3) and a switch (4) connected in series and a power absorption device (5) connected in parallel. The circuit breaker (7) prevents a commutator current flowing from the commutator circuit (2, 3, 4) to the load (5) in open operation. The circuit breaker is connected between the load (5) and a terminal node (P) between the main contact (1) and the commutator circuit (2, 3, 4). This is opened at the same time as the main contact (1) or before the commutator switch (4) closes. ADVANTAGE - Protects load in open operation more reliably.

10. 发明专利

DE69420940T2 未知
公开(公告)号：DE69420940T2
公开(公告)日：2000-05-31
申请号：DE69420940
申请日：1994-12-14
申请人： HITACHI LTD
发明人： HOSODA MINORU , YOSHIDA TORU , OUCHI SHIGETOSHI , HONDA HARUO , FUJITA YASUNOBU , ICHIKAWA FUMIHISA , YAMADA KOUYA
IPC分类号： B60M3/02 , H02H3/02 , H02H7/26 , H02H7/30 , B60M3/00
摘要： A dc power supply circuit connects a plurality of first dc circuit breakers 3, 4 to a semi-conductor converter 1, returning to the semi-conductor converter 1 through a dc driving part such as an electric railcar 6 connected to each dc circuit breaker 3, 4. A second dc circuit breaker 9 of larger capacity than the first dc circuit breakers 3, 4 is provided in a return circuit 8 and opened when a short circuit current is detected. Current decreasing means 14 opens the second dc circuit breaker 9 to decrease the short circuit current which flows, for example, through a series-circuit of a resistor R and a reactor L.

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