US PATENT SUBCLASS 361 / 76
.~ With phase sequence network analyzer


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}
76.~ With phase sequence network analyzer


DEFINITION

Classification: 361/76

With phase sequence network analyzer:

(under subclass 1) Subject matter relating to systems which are responsive to either one or more of the positive, negative or zero sequence components of electricity in a polyphase system.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77, for reverse phase responsive sensing.

85, for quantity comparison to determine a phase fault.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

107+, for similar subject matter but not protective.