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Three Phase Primary Electric Power Connecting and Phase Correcting Assembly

IP.com Disclosure Number: IPCOM000052982D
Original Publication Date: 1981-Aug-01
Included in the Prior Art Database: 2005-Feb-12
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Shane, SL: AUTHOR [+2]

Abstract

This assembly is designed as a unitary input three-phase electric power switch having provisions for connecting the phase of the power to a standard rotation if it does not already exist as such. A three-pole on-off switch is followed by a three-pole double-pole relay sub-assembly having differential resistance-capacitance phase-determining and relay-energizing circuits.

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Three Phase Primary Electric Power Connecting and Phase Correcting Assembly

This assembly is designed as a unitary input three-phase electric power switch having provisions for connecting the phase of the power to a standard rotation if it does not already exist as such. A three-pole on-off switch is followed by a three-pole double-pole relay sub-assembly having differential resistance- capacitance phase-determining and relay-energizing circuits.

The assembly is constructed on a floor plate 10. A switch base 12 is made of suitable insulating material for supporting power input terminals 14 each having a contact structure 16 at the inner end. Mating contact structures 18 are arranged on one end of each of three flexible conducting members 20. A coil spring 22 urges each member 20 into electric contact between the associated contact structures 16-18; an insulating member 24 prevents conduction between the three members where one coil spring is used to bias all three conducting members. Preferably, this insulating member is used in any case. The upper part of the insulating member 24 is arranged as a cam and stop for a disconnecting lever 26. This lever presses the member 24 down against the pressure of the coil spring(s) 22 to open the contacts 16-18 in the OFF position; in the ON position the contacts 16-18 are free to close under the urging of the coil springs 22.

The other end of the conducting member 20 is fitted on either side with contact members 28-30. Coope...