CN2188236Y

CN2188236Y - Lightning knife switch

Info

Publication number: CN2188236Y
Application number: CN 94206274
Authority: CN
Inventors: 张健珖
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-04
Filing date: 1994-03-04
Publication date: 1995-01-25
Anticipated expiration: 2004-03-04

Abstract

The utility model relates to a lightning-proof knife switch. On the basis of the existing ordinary three-phase or two-phase knife switch, the board surface at the lower end of a base board is provided with a cross-sectional pitch slot used for installing a lightning arrester which comprises two discharge devices which are installed oppositely and which have definite gap distance; the discharge device is made of a copper plate made into an arietiform shape; one discharge device is connected with the binding post of an output power supply; the other discharge device is connected with earth. The utility model has the advantages of simple structure, favorable lightning-proof effect, low cost, and convenient installation and maintenance.

Description

Lightning knife switch

The utility model belongs to knife switch, particularly a kind of Lightning knife swtich switch.

In recent years, the local thunder and lightning that often takes place in our mountain area burnt television set, motor, electric equipment, caused fire.More have even hit the dead person, the phenomenon of hurting sb.'s feelings takes place, yet commercially available knife switch does not have lightning arrester at present, can not lightning protection.If make a lightning arrester separately, the cost height.

It is a kind of on the basis of existing knife switch that the purpose of this utility model is to provide, and design and installation has the knife switch of lightning arrester simple in structure.

Technical solution scheme of the present utility model is such, on the basis of the knife switch that has common three-phase or two-phase now, base plate under base plate out-put supply contact has the hole groove in a cross section, be used to install lightning arrester, lightning arrester is installed relatively by two and is had the discharger of certain clearance distance to constitute.Discharger does not contact at ordinary times, has treated thunderstorm hour contact introducing the earth, and discharger is made the goat's horn shape with copper coin, and a discharger is connected with output wiring terminal, and another discharger is connected with the earth.That is on the out-put supply contact, draw and pick out the discharger that a usefulness copper sheet or conductor are made, another relative discharger has certain interval, and other discharger made from copper sheet or conductor draws the access the earth, and the top of discharger two between relatively is tip-angled shape.

The utility model has the advantages that simple in structure, lightning-arrest effective, cost is low, installation and maintenance are convenient, are easy to promote the use of.

This elaborates to utility model below in conjunction with drawings and Examples.

Fig. 1 is an overall structure front view of the present utility model.

Fig. 2 is an overall structure end view of the present utility model.

Among Fig. 1, Fig. 2, discharger (1,2), screw (3,4), ground wire (5), earthing screw (6), output wiring terminal (7), lead-in clamp (8), plug-in strip fulcrum (9), plug-in strip (10), base plate (11), fusible link (12), hole groove (13), plug-in strip hamper nail (14), fixed base plate pilot nail (15).

Application principle of the present utility model: when thunder and lightning enters the room along lead, by the goat's horn intercuspal space discharge of plug-in strip to discharger, thunder and lightning is directly introduced the earth, protected electric equipment and person poultry safety.

With reference to Fig. 1, Fig. 2, on the basis of existing common three-phase or two-phase knife switch, make insulating base at base plate (11) with slabstone or pottery, the hole groove (13) that one cross section is arranged on the plate face of output wiring terminal (7) below of base plate (11), hole groove (13) is used for installing lightning arrester, lightning arrester has two dischargers (1 of relatively installing, 2) consist of, discharger (1) is made the goat's horn shape with copper cash or copper coin, be fixed in the hole groove (13) with screw (4), be connected with the output wiring terminal (7) of every phase respectively, discharger (2) is made of one with copper coin with zero line (5), is fixed on plate (11) the bottom plate face with screw (3). During installation, the clearance distance that the goat's horn of discharger (1,2) point is installed relatively is 2.5-3.5mm. The cap seal that lightning arrester is made with iron sheet is tight. When installing and using, earthing screw (6) is connected with the earth. The zero line of user's lighting circuit and the ground wire of lightning arrester (5) are connected, and can eliminate so the charged phenomenon of zero line, guarantee Electrical Safety.

Embodiment, draw on the out-put supply contact (7) of base plate (11) and pick out the discharger (1) that a conductor or copper coin are made, be that Three-phase knife switch then is three lead-out wires, other is analogized, another relative amplifier (2) is connected as a single entity as ground wire (5) with a lead or copper coin, draw the access the earth by ground connection screw (6), ground wire (5) is fixed on base plate (11) the bottom plate face with screw (3), amplifier and plug-in strip binding post draw and connect, wherein going up amplifier (1) is connected with binding post (7), following amplifier (2) is connected with ground wire (5), amplifier (1 up and down, 2) two top relatively be the wedge angle contact, be triangle or erietiform, two amplifiers (1 up and down, 2) be installed in hole groove (13) lining of base plate (11), draw that its lead wire can be converted into right angle or other angle when receiving binding post (7) and ground wire (5) and going up.

Claims

1, a kind of Lightning knife swtich switch, comprise base plate (11), plug-in strip (10), lead-in clamp (8), output wiring terminal (7), fusible link (12) and lightning arrester, it is characterized in that having on the bottom plate face of base plate (11) the hole groove (13) in a cross section, be used to install lightning arrester, lightning arrester has two dischargers of installing relatively (1,2) constitute, draw on the out-put supply binding post (7) and be connected to discharger (1), also be connected with discharger (2) on the ground wire (5), discharger (1,2) two is gapped relatively, do not contact at ordinary times, treated thunderstorm hour contact introducing the earth, discharger (1,2) be contained in groove (13) lining, hole, its lead-out wire can be connected discharger (1 with post (7) with ground wire (5) after the bending angle, 2) two is gapped between top relatively, and its top is a tip-angled shape, discharger (1,2) in hole groove (13), connect with every output wiring terminal (7) mutually respectively, discharger (2) is connected with ground wire (5), and ground wire (5) is fixed on the plate face of base plate (11) below with screw (3).

2, Lightning knife swtich switch according to claim 1, the relative clearance distance of installing of goat's horn point that it is characterized in that discharger (1), (2) is 2.5-3.5mm, when installing and using, the ground wire (5) of discharger (2) is connected with the earth by earthing screw (6).