公开(公告)号：US20210199697A1

公开(公告)日：2021-07-01

申请号：US17250090

申请日：2019-06-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michael H. Stalder ,  Hermanus Franciscus Maria van Meijl ,  Joerg Hahn ,  Lars Schrix

IPC: G01R15/06 ,  G01R15/16 ,  H05K1/02

Abstract: Impedance assembly (120) for use in a voltage divider for sensing an AC elevated voltage of at least 1 kV of a power-carrying conductor (10) distributing electrical energy in a national grid. The impedance assembly comprises a) a PCB (170); b) a high-voltage contact (80) for connection to the power-carrying conductor; c) a first plurality of impedance elements (70) on the PCB, connected to the high-voltage contact and in series with each other such as to be operable in a first voltage divider (20) for sensing the voltage of the power-carrying conductor; and d) a second plurality of impedance elements (71) on the PCB, connected to the high-voltage contact and in series with each other such as to be operable in a second voltage divider (21) for harvesting electrical energy from the power-carrying conductor.

公开(公告)号：US20170127156A1

公开(公告)日：2017-05-04

申请号：US15318879

申请日：2015-06-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Ernesto M. Rodriguez, Jr. ,  Vaughn G. Amann ,  Lars Schrix ,  Jens Weichold ,  Anne-Maud B. Laprais ,  David H. Redinger ,  Ronald D. Jesme ,  David J. Badzinski

IPC: H04Q9/00 ,  H04B1/40 ,  G05B15/02

CPC classification number: H04Q9/00 ,  G05B15/02 ,  H04B1/40 ,  H04L63/0428 ,  H04Q2209/40 ,  H04Q2209/88

Abstract: A data communication apparatus, system, and method are described. The data communication system comprises a transceiver disposed on an entrance port to an enclosure, such as an underground enclosure. The transceiver includes a housing, the housing mountable to the entrance port, wherein the transceiver is configured to communicate with a network outside of the underground enclosure. The data communication system also includes a monitoring device disposed in the underground enclosure that provides data related to a real-time condition within the underground enclosure. The data communication system also includes a sensor analytics unit to process the data from the monitoring device/sensor and generate a processed data signal and to communicate the processed data signal to the transceiver.