US PATENT SUBCLASS 361 / 84
.~.~ Reverse energy responsive (e.g., directional)

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

1  DF  SAFETY AND PROTECTION OF SYSTEMS AND DEVICES {32}
78  DF  .~ With specific quantity comparison means {5}
84.~.~ Reverse energy responsive (e.g., directional)

DEFINITION

Classification: 361/84

Reverse energy responsive (e.g., directional):

(under subclass 78) Subject matter wherein the fault sensing means responds to the flow of energy which is reversed with respect to the normal direction of flow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

82, for similar subject matter wherein the quantities compared are specifically voltage and current.

SEE OR SEARCH CLASS

307, Electrical Transmission or Interconnection Systems,

127, for polarity, phase sequence or reverse flow responsive switching systems.