CN2282266Y

CN2282266Y - AC vacuum contactor with rated current as 40A

Info

Publication number: CN2282266Y
Application number: CN 96207035
Authority: CN
Inventors: 南铸治; 南金星
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-28
Filing date: 1996-03-28
Publication date: 1998-05-20
Anticipated expiration: 2006-03-28

Abstract

The utility model relates to an AC vacuum contactor with a rated operating current as 40 A, which is composed of a vacuum tube, a base, a crank arm, an electromagnetic operating mechanism, an auxiliary switch, a rectifier device, springs, etc. Compared with a CJ 10-40 A AC contactor, the utility model has the advantages of strong breaking capacity, short arcing time, good compression resistance performance, strong arc extinguishing performance, small volume, good explosion prevention performance, and no spark, although the CJ 10-40 A AC contactor and the utility model have the same installation dimension. Because a control circuit uses a bridge rectifier and two dual-voltage coils, the coils can be attracted reliably through 70 percent of the voltage, and the coils can be sustained reliably through 50 percent of the voltage. Moreover, the utility model has the advantages of no noise and low temperature rise.

Description

A kind of rated operational current is the AC vacuum contactor of 40A

The utility model relates to a kind of AC vacuum contactor, refers in particular to the AC vacuum contactor that rated current is 40A.

A.C. contactor is used widely in industry and every field.Because a collection of new product has appearred in structural shape difference, arc quenching principle difference, different with processing technology and the multi-purpose needs of selection in recent years.As CJX1, CJX2, LC1-D, LC2-D, 3TB40～58,3TBH80,3TH82, CJ10, CJ15, Series AC Contactor such as CJ20, CKJ.

In the CKJ series AC vacuum contactor existing rated operational current grade be 100,125,160,250,300,400,600A, but do not see that so far the 40A grade comes out, when the user needs the 40A grade, have to use the CJ10-40A A.C. contactor.And the CJ10-40A A.C. contactor exists major loop contact terminal and exposes, and breaking capacity, withstand voltage properties, arc extinguishing ability are poor, and contact is sticking easily molten, and volume is big, control loop low-voltage suction and keep defectives such as not really reliable.

The purpose of this utility model provides the AC vacuum contactor that a kind of rated operational current is 40A, satisfies user's needs.

To achieve these goals, the solution of the utility model employing is: the utility model partly is made up of vacuum interrupter, pedestal, connecting lever, electromagnetic operating mechanism, auxiliary switch, rectifying device, spring etc.When serve 36V (or 127V, 220V, 380V) 50HZ power supply to contactor after, becoming direct current by rectifying device supplies with solenoid, electromagnetic force and overcomes switching-in spring power and make the moving armature adhesive, drive connecting lever and rotate, make the main contact closure in the vacuum interrupter, the normally closed interlock that makes auxiliary switch simultaneously by re-packing separately, the normally open contact closure.When control during power cut-off, the electromagnetism the suction-combining force disappears, by switching-in spring power make main contact separately, contactor is in the disjunction state.

The utility model is compared with the CJ10-40A A.C. contactor, though installation dimension is identical, and short, good pressure-resistant performance of, arcing time strong than CJ10-40A contactor breaking capacity, the arc extinguishing ability is strong, volume is little, explosion-proof performance is good and no-spark.Because control loop adopts bridge rectifier, two voltage twin coil, thereby can reliable adhesive at 70% voltage, 50% voltage can reliably be kept, and noiselessness, temperature rise are low.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Accompanying drawing 1 is an electrical schematic diagram.

Accompanying drawing 2 is control power supply wiring figure.

Accompanying drawing 3 is for overlooking phantom.

Accompanying drawing 4 is looked phantom for a left side.

The following making of present embodiment: contact set screw (6), action iron (15), connecting lever (8) are assembled into disjunction partly; Moving conductive plate (7), be flexible coupling (5), quiet conductive plate (1) band vacuum tube (3) are assemblied on pedestal (2) shell together; Partly device is on pedestal (2) shell with disjunction, and upward brace (5) is corresponding with vacuum tube (3) for contact set screw (6), refills rotation axis (9), and rotation axis (9) passes the hole in the connecting lever (8), and connecting lever (8) and pedestal (2) are combined into one; Two ribbon core coils (11) and spring (14) are assemblied on the base plate (12), are fastened on pedestal (2) outer casing bottom with screw then; To assist travel switch (10), bridge rectifier wiring board (13) to be contained in pedestal (2) shell front-back together; With two ribbon core coils (11) six routes along separate routes wiring on travel switch (10) and bridge rectifier wiring board (13).Contact set screw (6) is drawn back about 1.2 with vacuum tube (3) and is opened distance, carries out three-phase equilibrium, and coil (11) adhesive is kept by 50% low-voltage and debugged by 70%.Rated operational current of the present utility model is 40A.

Claims

1, a kind of AC vacuum contactor, it partly is made up of vacuum tube, pedestal, connecting lever, electromagnetic operating mechanism, auxiliary switch, rectifying device, spring etc., it is characterized in that: contact set screw (6), action iron (15), connecting lever (8) are formed disjunction partly; Moving conductive plate (7), be flexible coupling (5), quiet conductive plate (1) band vacuum tube (3) device are on pedestal (2) shell; Contact set screw (6) is corresponding with the brace (5) of vacuum tube (3), and rotation axis (9) passes the hole in the connecting lever (8), and connecting lever (8) and pedestal (2) are combined into one; Two ribbon core line charts (11) and spring (14) device are on base plate (12), and base plate (12) is fastened on pedestal (2) outer casing bottom with screw; Auxiliary travel switch (10), bridge rectifier wiring board (13) install at pedestal (2) shell front-back; Two ribbon core line chart (11) six route wiring are on travel switch (10) and bridge rectifier wiring board (13); Contact set screw (6) scalable is drawn back about 1.2 with vacuum tube (3) and is opened distance, and rated operational current is 40A.