CN2252402Y

CN2252402Y - D.C. contactor

Info

Publication number: CN2252402Y
Application number: CN 95232261
Authority: CN
Inventors: 李玉敏; 王力
Original assignee: 王希业
Priority date: 1995-09-19
Filing date: 1995-09-19
Publication date: 1997-04-16
Anticipated expiration: 2005-09-19

Abstract

The utility model relates to a direct current contactor, comprising a vertical directly operated type electromagnetic system, an arc extinguishing system, a bridge type main contact and an auxiliary contact. The utility model is characterized in that the bridge type main contact is the positive-mounted direct-operated type double breakpoint structure; the both sides of the double pole bridge type main contact are respectively provided with a vertical permanent magnetism block. A double pole parent line is provided without positive and negative poles limitation. The utility model eliminates that the breaking fault is generated caused by false wiring by users. The utility model has the advantages that when the small electric current is broken, the arcing time is not long; when the large electric current is broken, the excessive wear of the contact is not generated. The utility model has the advantages of safe performance, light weight, small volume, convenient maintenance, broad application range, long service life, etc.

Description

The Novel DC contactor

The utility model belongs to the low tension switch technical field, specifically a kind of D.C. contactor.

At present the D.C. contactor that generally uses of enterprise as: CZ0, CZ18 bes routine, although these products have satisfied the needs of enterprise, but still have more deficiency, the one, the actual instructions for use of voltage, current class and user does not match, as: primary cut-out hydraulic mechanism motor is direct current 220V, 125V, and electric current is 7A, 1.6A etc.; Communication power supply lighting loop voltage is generally 60V, 100A, and CZ0, CZ18 D.C. contactor rated voltage are 440V, and the electric current minimum level is 40A.In actual use, because the appropriate products that does not match can only be a low load with strong power, economy is very poor, and in addition, the arc quenching method of above-mentioned old product is a Petersen coil series connection arc blow-out, shortcoming is that volume is big, because magnetic blow-out power is little, the arcing time is oversize breaks down easily when extinguishing little electric current; When extinguishing big electric current, because magnetic blow-out power is too big, the contact excessive wear can take place and useful life of reducing contactor.

The purpose of this utility model provides a kind of permanent magnetism arc extinguishing type D.C. contactor.

The purpose of this utility model is achieved in that it comprises vertical direct drive type electro magnetic system, arc quenching system, bridge-type main contact and auxiliary contact, it is characterized in that the bridge-type main contact is a formal dress Direct Action Type double-breakpoint structure, respectively is provided with a vertical permanent magnets in the both sides of bipolar bridge-type main contact.Above-mentioned auxiliary contact is arranged on the main contact both sides and is the building blocks fabricated structure.

The utility model is owing to adopt the permanent magnetism arc extinguishing, and then constant magnetic field can solve worn-out sick that above blow-out coil exists effectively.In addition owing to the permanent magnetism arc extinguishing is arranged on the end of the bridge both sides of main contact, and between the arc-extinguish chamber of the two poles of the earth, install flash barrier additional, the two poles of the earth main contact has not had the both positive and negative polarity restriction like this, thereby eliminated the disjunction fault that the user produces because of the wiring error, and it is oversize can not the arcing time to occur when having the little electric current of disjunction, does not have the over worn advantage of contact during the big electric current of disjunction.The utility model has also adopted building blocks fabricated structure, arc-extinguish chamber to adopt insatiable hunger resin material, makes it have that performance is safe and reliable, in light weight, volume is little, cost is low, easy to maintenance, characteristics such as range of application is wide, long service life.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is that structural representation cuts open in office of the present utility model

Fig. 2 is the attached view of Fig. 1

Shown in Fig. 1,2,1 is case body, 2 is vertical direct drive type electro magnetic system, bridge-type main contact 4 and auxiliary contact 7, this bridge-type main contact 4 is a formal dress Direct Action Type double-breakpoint structure, respectively be provided with a vertical permanent magnets 3 in the both sides of bipolar bridge-type main contact, add are-tight dividing plate 6 between the two poles of the earth arc-extinguish chamber 5, auxiliary contact 7 is arranged on main contact 4 both sides and is the building blocks fabricated structure, according to user's needs, the contact logarithm can arbitrarily increase head and subtract like this.Other 8 is bus, and using method is identical with former common D.C. contactor.

Claims

1, a kind of Novel DC contactor, it comprises vertical direct drive type electro magnetic system, arc quenching system, bridge-type main contact and auxiliary contact, it is characterized in that the bridge-type main contact is a formal dress Direct Action Type double-breakpoint structure, respectively is provided with a vertical permanent magnets in the both sides of bipolar bridge-type main contact

2, D.C. contactor according to claim 1 is characterized in that auxiliary contact is arranged on the main contact both sides and is the building blocks fabricated structure.