Patents-Review.com
ClassID:

216714 ⎘

H02H3/30 - CPC Classification

Classification description:

Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel

Sub-classes:
Recent Application in this class:
#1
20240213755
2024-06-27

FAULT MONITORING METHOD FOR MULTI-PORT INTERNAL PASSIVE LOAD-FREE PROBABILISTIC LOAD FLOW ELECTRIC NETWORK

 #2
20190140440
2019-05-09

Method of operation a differential protection scheme

 #3
20170358913
2017-12-14

Overcurrent element in time domain

 #4
20170331279
2017-11-16

Differential protection method and differential protection device for performing a differential protection method

 #5
20170199237
2017-07-13

Method, device and system for determining the fault location of a fault on a line of an electrical energy supply network

 #6
20170059636
2017-03-02

Differential protection method, differential protection device and differential protection system

 #7
20150171621
2015-06-18

Current differential relay

 #8
20130094372
2013-04-18

Systems, methods, and apparatus for modifying sensor time stamp data

 #9
20120162843
2012-06-28

Line current differential protection upon loss of an external time reference

 #10
20120147941
2012-06-14

Method and apparatus for detecting communication channel delay asymmetry

 #11
20110211619
2011-09-01

Protective relay and method for controlling the same

 #12
20110063766
2011-03-17

Line current differential protection upon loss of an external time reference

 #13
20110013676
2011-01-20

Digital protective relay device and data transmission device for the same

 #14
20100302697
2010-12-02

Current differential relay

 #15
20100002348
2010-01-07

Distributed bus differential protection using time-stamped data

 #16
20090204268
2009-08-13

Power distribution system with fault protection using energy packet confirmation

 #17
20090089608
2009-04-02

Systems and methods for power swing and out-of-step detection using time stamped data

 #18
20080309505
2008-12-18

Current-differential relay device

 #19
20080137246
2008-06-12

Relay system in substation and PCM current differential relay system

 #20
20080068769
2008-03-20

System, method and device to preserve protection communication active during a bypass operation