Shanghai Huaming Power Equipment Co., Ltd. Patent applications |
Patent application number | Title | Published |
20140291130 | EXTERNAL ON-LOAD TAP CHANGER - Disclosed is a suspensible external combined on-load tap changer, including: a switch box, a switch body and a motor mechanism, a top box wall of the switch box being opened with a top opening, a top box cover being mounted on the top opening, wherein the switch body is detachably mounted in the switch box and is entirely lifted in and lifted out by the top opening; and the motor mechanism is connected with the switch body in a driving manner. The switch body in the present invention uses a hoisting structure, and the top box wall of the switch box is opened with a top opening with a size large enough, so that the switch body is directly lifted in and lifted out of the switch box from the top opening, and installation and maintenance are easier. | 10-02-2014 |
20130306449 | CHANGE-OVER STRUCTURE BETWEEN MOVING CONTACT AND STATIC CONTACT OF TAP SELECTOR - Disclosed is a change-over structure between a moving contact and a static contact of a tap selector, including an insulation changer base plate, and further including at least two static contacts, fixed on the insulation changer base plate in at least one column at intervals, where inner ends of at least two static contacts are electrically connected to two tap windings of a transformer respectively; at least one rotation shaft, where at least two moving contacts are evenly distributed on the one rotation shaft, and the at least two moving contacts are electrically connected to each other; and at least one arc-shaped conductor corresponding to the at least two static contacts in at least one column, where the arc-shaped conductor and outer ends of the at least two static contacts in at least one column are located at the same circumference with a center of the rotation shaft as a circle center, and when one of the moving contacts is changed over between the two static contacts, the other moving contact is certainly electrically connected to the arc-shaped conductor. Through the present invention, connection conductors in the changer are omitted, so that each component is fixed and reliable and is convenient to mount, and hidden fault troubles are reduced. | 11-21-2013 |
20090211890 | EXTERNAL HANGING COMBINED VACUUM ON-LOAD TAP SWITCH - The invention relates to an external hanging combined vacuum on-load tap switch, comprising a case, a tap selector, a switching means assembly, a transmission device, and one electric operation mechanism, wherein one lateral side wall of the case is provided with a connecting terminal connected with the coil tap of a transformer; the external side of the wall is provided with a first flange plate and is connected with a second flange plate of the transformer; the tap selector and the switching means assembly are arranged inside the case in parallel; and the electric operation mechanism is connected with the transmission device and drives the tap selector and the switching means assembly to achieve tapping and switching through the transmission device. | 08-27-2009 |