Emergency shut-down apparatus for motor

Details Emergency shut-down apparatus for motor Emergency shut-down apparatus for motor

1998-02-20

2000-08-22

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361 33, 361170, 307139, 307140, H01H 4722

Patent

active

061081795

ABSTRACT:
Emergency shut-down circuit is provided for a multiplexed circuit. The emergency shut-down circuit includes a plurality of contacts arrayed in parallel to each other and which are synchronously opened and closed. A plurality of electromagnetic contactors are operated according to a open or closed state of each of the plurality of emergency shut-down switches and are connected in series to a main circuit power circuit for a motor.

REFERENCES:
patent: 3581179 (1971-05-01), Jones
patent: 5214311 (1993-05-01), Kageyama et al.
patent: 5444342 (1995-08-01), Matsuo et al.
patent: 5689398 (1997-11-01), Miller et al.

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