General Electric Technology Gmbh

East China University of Science and Technology

Yang Xia

Hengxu Ha

Chongjun Zhao

Yongyue Ma

Xiuzhen Qian

Gajendiran Balakrishnan

Sankara Subramanian Srigopalakrishnamurthi

Zhen Shao

Brian Kirby

Yunlong Xu

A trip apparatus for a circuit interruption device that comprises a coil operatively connectable to a circuit interruption device. The coil is configured to selectively operate the circuit interruption device to interrupt when a current flowing through the circuit interruption device exceeds a threshold. The trip apparatus also includes a current measuring device configured to selectively measure a coil current flowing through the coil to determine a measured coil current signal. In addition, the trip apparatus includes a monitoring device configured to determine the derivative of the measured coil current signal and to perform a correlation of the derivative of the measured coil current signal and a reference derivative of a reference coil current signal to determine a correlation output. The monitoring device is further configured to compare the correlation output with a reference correlation threshold to determine whether an operating condition of the coil is normal or abnormal.

In or relating to circuit interruption devices

A photocatalytic composition is disclosed that includes a silver halide in combination with one or more rare earth elements. The composition may be used for the photocatalytic degradation of pollutants.

Photocatalytic compositions and methods for their preparation and use

Growing community of inventors

Shanghai, China

Yang Xia