A COMBINATION APPARATUS OF DISTRIBUTION TRANSFORMER AND SWITCH

Title:

A COMBINATION APPARATUS OF DISTRIBUTION TRANSFORMER AND SWITCH

Document Type and Number:

WIPO Patent Application WO/1998/053466

Kind Code:

A1

Abstract:

A combination apparatus of distribution transformer and switch comprises a distribution transformer with three-phase and five-column, wherein the arrangement of the low-voltage winding is Y�0?-form, the high voltage winding of each phase is connected in series with a high voltage fuse to constitute respectively one of the three high voltage phase arms, and the arrangement in high voltage side is $g(D)-form which is formed with one high voltage phase arm as one unit. The apparatus can be used in the system in which the neutral is not connected to the ground, or the neutral is connected to the ground through extinguishing-arc coil or through small resistance, and in the system in which the neutral is connected to the ground directly as well. It is possible that the fault phase does not disturb the normal operation of the other phases.

Inventors:

LI SHULIN (CN)
ZHANG XUJUN (CN)

Application Number:

PCT/CN1998/000077

Publication Date:

November 26, 1998

Filing Date:

May 22, 1998

Export Citation:

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Assignee:

LI SHULIN (CN)
ZHANG XUJUN (CN)

International Classes:

H01F27/40; H01F27/42; H01F30/12; H02H7/04; H02H9/02; (IPC1-7): H01F27/42; H01F27/40

Foreign References:

US2198489A	1940-04-23
EP0024934A1	1981-03-11
JPS618645A	1986-01-16

Other References: