LIGHTNING PROTECTION DEVICE - NIPPON TELEGRAPH & TELEPHONE

Title:

LIGHTNING PROTECTION DEVICE

Document Type and Number:

WIPO Patent Application WO/2022/244144

Kind Code:

A1

Abstract:

This lightning protection device protects a power supply device from lightning surge current and comprises: a plurality of lightning protectors connected between the power supply device and a ground electrode; and an impedance control unit for decreasing the impedance between the plurality of lightning protectors and the ground electrode when a common mode current occurs and increasing the impedance when a normal mode current occurs.

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JP2763170	[Title of Invention] Control device for winding induction machine
JPH0533641	[Name of invention] Surge suppression device

Inventors:

NAKAMURA NAOMICHI (JP)
HANAOKA NAOKI (JP)
HIGUCHI YUJI (JP)
TANAKA TORU (JP)

Application Number:

PCT/JP2021/019001

Publication Date:

November 24, 2022

Filing Date:

May 19, 2021

Export Citation:

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Assignee:

NIPPON TELEGRAPH & TELEPHONE (JP)

International Classes:

H02H9/04

Domestic Patent References:

WO2015087794A1

2015-06-18

Foreign References:

US20080310072A1	2008-12-18
JP2005520473A	2005-07-07
JPH03230726A	1991-10-14

Attorney, Agent or Firm:

ITOH, Tadashige et al. (JP)

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