Circuit interrupter with solid state digital trip unit

Details Circuit interrupter with solid state digital trip unit Circuit interrupter with solid state digital trip unit

H - Electricity

02

H

348/26, 348/39

H02H 3/16 (2006.01) H01H 75/00 (2006.01) H02H 3/08 (2006.01)

Patent

CA 1169537

28 47,128 ABSTRACT OF THE DISCLOSURE A circuit interrupter includes a trip unit consisting of a microcomputer, current transformers for sensing current flow through the interrupter, an A/D converter to supply digital values of current flow for use by the microcomputer, and an inter- changeable plug-in read-only memory chip removably inserted in the front panel of the interrupter for storing parameters of the time-current tripping characteristics of the circuit interrupter.

374787

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