ClassID:

216712

H02H3/283 - 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 and taking into account saturation of current transformers

Recent Application in this class:
#1
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CURRENT TRANSFORMER SENSING WITH SATURATION PROTECTION

#2
20240106225
2024-03-28

System and method for restraining differential bias

#3
20190067928
2019-02-28

Differential protection method, device and system for monitoring a line of an electrical energy supply network

#4
20180358802
2018-12-13

Method and control device for current differential protection

#5
20180331569
2018-11-15

Technique For Lowering Inrush Current To An Uninterruptible Power Supply With A Transformer

#6
20170163024
2017-06-08

Method for preventing differential protection maloperation of optical fiber caused by saturation of single CT of 3/2 connection

#7
20160006240
2016-01-07

Method for detecting fault and current differential protection system thereof

#8
20150293166
2015-10-15

Differential protection method in an electrical power supply system and protective apparatus for carrying out a differential protection method

#9
20150160297
2015-06-11

Method for identifying the fault by current differential protection and device thereof

#10
20140268435
2014-09-18

Current saturation detection and clamping circuit and method

#11
20140063669
2014-03-06

System and method for protecting an electrical power grid

#12
20140002937
2014-01-02

Differential protection in electrical power networks

#13
20130120888
2013-05-16

Current differential replay apparatus

#14
20120224287
2012-09-06

FUZZY INTERFERENCE RELAY AND METHOD FOR CURRENT DIFFERENTIAL PROTECTION OF A TRANSMISSION LINE

#15
20070070565
2007-03-29

System, apparatus and method for compensating the sensitivity of a sequence element in a line current differential relay in a power system