Title:
CURRENT GAIN CONTROL OF CIRCUIT BREAKER TRIP UNIT
Document Type and Number:
Japanese Patent JP2009259810
Kind Code:
A
Abstract:
To provide an electronic trip unit for circuit breaker.
This electronic trip units for circuit breaker 100 includes a rating plug 110 having a plurality of switches each configured to indicate a specified current rating for the rating plug 110 and for selectively supplying a current rating for the electronic trip unit 100, a processing unit 140 which receives and reads a value of the selected current rating from the rating plug 110 upon power-up, and a gain control unit 120 having a plurality of gain circuits 122. Each of the gain circuits 122 includes a plurality of gain switches set by the processing unit 140 based on the selected current rating to control a gain of the input current of the electronic trip unit 100.
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Inventors:
VICENTE NATANIEL BARBOSA
LENHART JR BRIAN PATRICK
WEST STEPHEN JAMES
GREENWOOD TODD
HAMEED ZUBAIR
DEVARAPALLI SREENIVASULU R
LENHART JR BRIAN PATRICK
WEST STEPHEN JAMES
GREENWOOD TODD
HAMEED ZUBAIR
DEVARAPALLI SREENIVASULU R
Application Number:
JP2009090873A
Publication Date:
November 05, 2009
Filing Date:
April 03, 2009
Export Citation:
Assignee:
GEN ELECTRIC
International Classes:
H03G3/10; H01H83/02
Attorney, Agent or Firm:
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Hirokazu Ogura
Toshihisa Kurokawa