US 9,812,858 B2
Surge protective system
Tsuyoshi Kawabata, Shinagawa-Ku (JP)
Assigned to Sankosha Corporation, Tokyo (JP)
Filed by SANKOSHA CORPORATION, Shinagawa-Ku, Tokyo (JP)
Filed on Sep. 21, 2015, as Appl. No. 14/859,445.
Claims priority of application No. 2014-223688 (JP), filed on Oct. 31, 2014.
Prior Publication US 2016/0126728 A1, May 5, 2016
Int. Cl. H02H 9/04 (2006.01); H01C 7/12 (2006.01); H01C 7/10 (2006.01)
CPC H02H 9/04 (2013.01) [H01C 7/12 (2013.01); H01C 7/10 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A surge protective system comprising:
a plinth for wiring;
a plurality of surge protective devices disposed in parallel and detachably fitted into and attached to the plinth; and
a surge detector disposed in parallel with respect to the surge protective devices and detachably fitted into and attached to the plinth,
wherein the plinth comprises:
a base in substantially box-like shape having an opening at an upper part;
a cover comprising a base part covering the upper part of the base and a pair of 1st side wall part and a 2nd side wall part extending upward from both side faces of the base part;
a plurality of 1st plinth terminal parts stored in the base and the cover, a plurality of line side wires inserted from an outer face of the 1st side wall part being respectively connected to the 1st plinth terminal parts;
a 2nd plinth terminal part stored in the base and the cover, a ground wire inserted from an outer face of the 2nd side wall part being connected to the 2nd plinth terminal part; and
a wiring metal fitting stored in the base and comprising a 1st plinth contact part, a 2nd plinth contact part, and a connection part connecting the 1st plinth contact part and the 2nd plinth contact part,
each of the surge protective devices comprises:
a 1st case in substantially box-like shape, detachably fitted and attached between the 1st side wall part and the 2nd side wall part; and
a lightning protection circuit stored in the 1st case and discharging a lightning surge current entering from a side of each of the 1st plinth terminal parts to a side of the 1st plinth contact part, and
the surge detector comprises:
a 2nd case having substantially the same shape as the 1st case and detachably fitted and attached between the 1st side wall part and the 2nd side wall part;
a detecting unit stored in the 2nd case, discharging the lightning surge current entering from a side of the 2nd plinth contact part to a side of the 2nd plinth terminal part and detecting a current value of the lightning surge current to obtain a lightning surge current detection result; and
a display unit displaying the lightning surge current detection result so as to be able to be viewed from outside.