Shanghai Huaming Power Equipment Co., Ltd

Riming Xiao

Xu Shen

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.

External on-load tap changer

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.

External hanging combined vacuum on-load tap switch

A moving contact head for tap switches comprises a moving contact head installation plate component () rotating with a switch main shaft (), and a holder-type moving contact head () arranged on the moving contact head installation plate component (). The holder-type moving contact head () is divided into two sets of upper and lower moving contact head components, which are connected to each other and formed a holder shape; wherein, each moving contact head component comprises a moving contact head unit () consisting of a plurality of single moving contact heads () in parallel, and a leaf spring component () arranged on the moving contact head component (); both ends of each single moving contact head () are provided with a contact point, respectively. A contacting ring () is clamped at one ends of the two moving contact head units (), and a static contact head () is clamped the other ends of the two moving contact head units to deform a leaf spring () in the leaf spring component (). However, the reaction force by the leaf spring () causes the moving contact head unit () to contact with the contacting ring () and the static contact head () to achieve on-state of large current.

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Shanghai, China

Riming Xiao