CN2333086Y

CN2333086Y - Intelligent plastic hull breaker

Info

Publication number: CN2333086Y
Application number: CN 97242326
Authority: CN
Inventors: 黄忠烈
Original assignee: DONGHUA ELECTRICAL APPLIANCES FACTORY ZHEJIANG PROV
Current assignee: DONGHUA ELECTRICAL APPLIANCES FACTORY ZHEJIANG PROV
Priority date: 1997-12-29
Filing date: 1997-12-29
Publication date: 1999-08-11
Anticipated expiration: 2007-12-29

Abstract

The utility model relates to an intelligent circuit breaker with a plastic shell, which comprises a pedestal, an upper cover, an arc-extinguishing chamber, a handle, an actuating mechanism, a main shaft, a tripping shaft, a tripping relay, a mutual inductor, a generating line, a flexible coupling device, a static contact, a moving contact, and an upper generating line. The flexible coupling device passes through the mutual inductor; the mutual inductor obtains control power supply and obtains detection signals; a monolithic computer module is arranged on the upper part of the mutual inductor; the tripping relay is installed on the lower right part of the handle for executing commands sent from the monolithic computer module; a hollow space in which accessories can be arranged is arranged inside the upper cover; a turnable cover is arranged on the upper cover. The utility model has a larger range of rated operating current and is convenient for the standardized production and the storage reduction of an enterprise. The intelligent circuit breaker with a plastic shell can be used as a main protection switch.

Description

Intelligent plastics shell type circuit breaker

The utility model relates to a kind of low-voltage circuit breaker, refers in particular to moulded case circuit breaker.

The plastic casing of common moulded case circuit breaker is made up of base and cover, and all parts all are loaded among the plastic base, is characterized in that structure is comparatively simple.A kind of common moulded case circuit breaker structure chart has at present been introduced for the 174th page in " low-voltage electrical apparatus is selected servicing manual for use " (China Machine Press, 1995) of Zheng Mingfang chief editor.It is made of lid, arc control device, handle, free tripping mechanism, main shaft, trip shaft, thrermostatic bimetal-plate, instantaneous adjusting, Down Highway, thermal element, magnetictrip, soft connection, fixed contact, moving contact, Up Highway UHW etc.; floor plan; that is: end of incoming cables → arc control device → quiet, moving contact; actuating mechanism → magnetictrip → leading-out terminal; general tool heat, magnetic are protected, how as distribution branch road load end switch or motor protection switch.Chinese patent ZL94238733 " a kind of four utmost point moulded case circuit breakers ", mainly comprise insulation crust, operating mechanism, contact arc-extinguishing system, release and the N utmost point, its principal character is orientation angle quiet, moving contact have been made regulation close first and then disconnect and other characteristic to reach N utmost point contact.

The purpose of this utility model is to provide a kind of intelligent plastics shell type circuit breaker, and it is specially adapted to exchange 50Hz, rated voltage 660V and following, electric current 100A～630A, selectivity requires high, that short circuit current is big electric power distribution network or Electric Machine Control center to use as the main protection switch.

For achieving the above object; the solution that the utility model is taked is: a kind of intelligent plastics shell type circuit breaker; comprise pedestal; loam cake; arc control device; handle; actuating mechanism; main shaft; trip shaft; tripping relay; instrument transformer; Down Highway; soft connection; fixed contact; moving contact; Up Highway UHW; at the place ahead of actuating mechanism moving contact; fixed contact is used for closing of circuit and disconnects in arc control device; instrument transformer is passed in soft connection; instrument transformer is obtained the control power supply and is obtained detection signal again; above instrument transformer, settle one-chip computer module; tripping relay is housed in the handle lower right carries out the order that one-chip computer module sends; also have the space that annex can be set in the loam cake, on cover and also have one and renovate protection.

Because the utility model adopts above-mentioned technology, makes the utility model compare following characteristics with existing like product:

1, because one-chip computer module is provided with various dropout ranks easily, therefore a circuit breaker just has bigger rated operational current scope, has reduced the specification of circuit breaker, is convenient to enterprise standardization production, reduces manufactory and user's stock, quickens capital turnover;

2,, electronic transmission operating mechanism annex can be set in the loam cake space realize that remote control closes tripping operation, the Alarm contactor annex can be set have the remote measurement warning function because one-chip computer module is arranged;

3, because the one-chip computer module power consumption is minimum, lowered the circuit breaker temperature rise, more safe and reliable on using.

Below in conjunction with embodiment and accompanying drawing thereof the utility model and the good effect that has are described in further detail.

Fig. 1 is the structure chart of present embodiment.

Fig. 2 is that present embodiment is opened the vertical view of renovating after (5).

Fig. 3 is the functional-block diagram of the one-chip computer module (8) in the present embodiment.

The three-phase device that present embodiment adopts zero line to close back disjunction mechanism earlier becomes system, has four utmost point functions.As shown in Figure 1, pedestal (16) front end has four Up Highway UHWs (1) and binding post, there are four Down Highways (15) and binding post in the rear end, fixed contact (2) is arranged on the Up Highway UHW (1), arc control device (4) are arranged on the fixed contact (2), actuating mechanism (6) and moving contact (3) are by main shaft (12) interlock, support in the actuating mechanism (6) is installed in pedestal (16) middle part, the place ahead moving contact (3) of actuating mechanism (6), fixed contact (2) is used for closing of circuit and disconnects in arc control device (4), for reducing actuating mechanism (6) abrasion, actuating mechanism (6) rolling friction place all scribbles the fire-resistant lubricants that contains curing copper, actuating mechanism (6) goes up peace handle (7), soft connection (14) is passed instrument transformer (13) one ends and is connected the other end with Down Highway (15) and is connected with moving contact (3), instrument transformer (13) is contained in pedestal (16) rear portion, instrument transformer (13) is obtained the control power supply and is obtained detection signal again, settle one-chip computer module (8) in instrument transformer (13) top, tripping relay (11) is housed in handle (7) lower right carries out the order that one-chip computer module (8) sends, by trip shaft (10) actuating mechanism (6) is threaded off, pedestal (16) is gone up to place loam cake (9) is installed, and handle (7) passes loam cake (9).As shown in Figure 2; also have space (17) (18) (19) (20) (21) that annex is set in the loam cake (9); these annexes can be electronic transmission operating mechanisms; shunt release; auxiliary auxilliary head; Alarm contactor etc.; also be provided with the usefulness that button (25) is used for detection or emergent tripping operation in the loam cake (9); pressing the button (25) forces trip shaft (10) rotation that actuating mechanism (6) is threaded off; detect the dropout sensitivity of circuit breaker or do emergent tripping operation; by the test hole (23) on the loam cake (9) one-chip computer module (8) is tested its service behaviour; one-chip computer module (8) is adjusted with miniature screwdriver by the adjustment hole (24) on the loam cake (9) and to be adjusted; observe one-chip computer module (8) power supply indicator by the inspection hole (22) on the loam cake (9); the fashionable indicator light of circuit breaker closing is bright; indicator light extinguishes during disconnection; loam cake (9) is gone up also has one to renovate (5) protection, and handle (7) also passes renovates (5).The operation principle of one-chip computer module in the present embodiment (8) is seen Fig. 3.

Claims

1; a kind of intelligent plastics shell type circuit breaker; comprise pedestal (16); loam cake (9); arc control device (4); handle (7); actuating mechanism (6); main shaft (12); trip shaft (10); tripping relay (11); instrument transformer (13); Down Highway (15); soft connection (14); fixed contact (2); moving contact (3); Up Highway UHW (1); the place ahead moving contact (3) in actuating mechanism (6); fixed contact (2) is used for closing of circuit and disconnects in arc control device (4); it is characterized in that: instrument transformer (13) is passed in soft connection (14); instrument transformer (13) is obtained the control power supply and is obtained detection signal again; settle one-chip computer module (8) in instrument transformer (13) top; tripping relay (11) is housed in handle (7) lower right carries out the order that one-chip computer module (8) sends; also have space (17) (18) (19) (20) (21) that annex can be set in the loam cake (9), loam cake (9) is gone up also has one to renovate (5) protection.

2, a kind of intelligent plastics shell type circuit breaker according to claim 1 is characterized in that: it can be electronic transmission operating mechanism, shunt release, auxiliary contact, Alarm contactor etc. that the middle space (17) (18) (19) (20) (21) of loam cake (9) is provided with annex.

3, a kind of intelligent plastics shell type circuit breaker according to claim 1 is characterized in that: also be provided with the usefulness that button (25) is used for detection or emergent tripping operation in the loam cake (9).

4, a kind of intelligent plastics shell type circuit breaker according to claim 1, it is characterized in that: one-chip computer module (8) is tested by the test hole (23) on the loam cake (9), one-chip computer module (8) is adjusted with miniature screwdriver by the adjustment hole (24) on the loam cake (9) and to be adjusted, observe one-chip computer module (8) power supply indicator by the inspection hole (22) on the loam cake (9).

5, a kind of intelligent plastics shell type circuit breaker according to claim 1, it is characterized in that: actuating mechanism (6) rolling friction place all scribbles the fire-resistant lubricants that contains curing copper.