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Title:
EXTERNAL-HANGING TYPE COMBINED ON-LOAD TAP-CHANGER
Document Type and Number:
WIPO Patent Application WO/2009/105932
Kind Code:
A1
Abstract:
An external-hanging type combined on-load tap-changer comprises a housing(200), a tap-chooser(600), a change-over switch assembly(700), a transmission means and an electric operating mechanism. Terminals(220) are provided at a sidewall of the housing(200) and are connected to coil taps of the transformer. A flange(210) is provided outside sidewall and is connected to a flange of the transformer. The tap-chooser(600) and the change-over switch assembly(700) are arranged in the housing(200) in parallel. The electric operating mechanism is connected to the transmission means. Tap action and switching action are accomplished by the transmissionmeans driving the tap-chooser(600) and the change-over switch assembly(700). Because the tap-chooser(600) and the change-over switch assembly(700) are arranged in parallel, the lateral distance is increased between each phase, the design requirement of the high-voltage and high-current switch is satisfied and the tap-changer is adapted to Δ connection of the transformer.

Inventors:
XIAO RIMING (CN)
Application Number:
CN2008/001753
Publication Date:
September 03, 2009
Filing Date:
October 17, 2008
Export Citation:
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Assignee:
HUAMING POWER EQUIPMENT MFG CO (CN)
XIAO RIMING (CN)
International Classes:
H01F29/04; H01H3/32
Foreign References:
CN1121253A1996-04-24
CN2800455Y2006-07-26
JPH06204056A1994-07-22
JPH01107620A1989-04-25
Attorney, Agent or Firm:
SHANGHAI L & W INTELLECTUAL PROPERTY LAW OFFICE, LLC (Suite 3011698 Yi Shan Road, Shanghai 3, CN)
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