CN104934271B

CN104934271B - Rccb

Info

Publication number: CN104934271B
Application number: CN201410724961.7A
Authority: CN
Inventors: 塚本龙幸
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2014-03-20
Filing date: 2014-12-03
Publication date: 2017-08-15
Anticipated expiration: 2034-12-03
Also published as: JP6157390B2; KR20150110255A; KR101606641B1; CN204303733U; JP2015185215A; CN104934271A

Abstract

It is an object of the invention to improve the operability when the tripping characteristic to tripgear is adjusted, it is configured to possess：Zero sequence converter main body (11), it has been inserted into power line (20)；Framework (12), it supports the zero sequence converter main body；And framework (14), it is installed on the framework, and zero sequence converter main body is supported, and the framework (14) has：A pair of sidewalls (14a), they are combined with framework；Supporter (14b), it links a pair of sidewalls；Holding section (14e), it protrudes in the lower section of side wall and is locked to pedestal；And abutting part (14f), it protrudes to the opposite side of holding section in the upper portion of side wall and abutted with pedestal.

Description

RCCB

Technical field

The present invention relates to a kind of RCCB, when it occurs electric leakage or ground short circuit in alternating current circuit, the electricity is disconnected Road, the installation constitution of the zero sequence converter module units of more particularly to a kind of detection of electrical leakage.

Background technology

As existing RCCB, components described below etc. is housed in the housing being made up of pedestal and cover body and structure Into that is,：Multiple power supply side terminals and multiple load side terminals；Tripgear, it makes moving contact rotate and disconnect circuit； Zero sequence converter, it in circuit to being leaked electricity or ground short circuit is detected；And detection of electrical leakage unit, its using this zero The output of sequence current transformer drives tripgear.(for example, referring to patent document 1)

Patent document 1：No. 4910913 publications of Japanese Patent No.

However, in RCCB as Patent Document 1, the base of breaker is not secured in detection of electrical leakage unit In the case of seat, produced bending or torsion during due to being installed on pedestal in the power line that will pass through zero sequence converter and configure Song, zero sequence converter becomes to tilt to cover body side, as a result, carrying out tripgear in the adjusting screw of rotation bimetal piece During the adjustment of tripping characteristic, the peripheral shape of zero sequence converter hinders the inserting to the bimetal piece adjusting screw in center such as screwdriver Enter, operability is deteriorated.

In addition, when detection of electrical leakage unit is installed on into pedestal, there are problems that, i.e. the load of zero sequence converter The power line of side is heaved, the insulation tube of shunt conductor may rub and be damaged with the corner of pedestal.

The content of the invention

The present invention is exactly to be proposed to eliminate existing problem as described above there is provided a kind of RCCB, should RCCB is capable of the installation of the operational detection of electrical leakage unit of progress well, and easily carries out the tune of tripping characteristic It is whole.

RCCB involved in the present invention, it possesses：Housing, it is made up of pedestal and cover body；Multiple load-sides Connection terminal and multiple mains side connection terminals, they expose before and after the housing；Open-close mechanism section, it is contained in described In housing, breaker body is formed；Tripgear, it starts the open-close mechanism section；Zero sequence converter module units, it is used In detection electric leakage；And electric-leakage detection circuit, it is supplied to the output signal of the zero sequence converter module units and detects electricity The electric leakage on road, output of the RCCB based on the electric-leakage detection circuit drives the tripgear,

In the RCCB, the zero sequence converter module units is configured to, and possesses：Zero sequence converter main body, It has been inserted into power line；Framework, it supports the zero sequence converter main body；And framework, it is installed on the framework, to described zero Sequence current transformer main body is supported, and the framework has：A pair of sidewalls, they are combined with the framework；Supporter, it links should A pair of sidewalls；Holding section, it protrudes in the lower section of the side wall and is locked to the pedestal；And abutting part, it is described The upper portion of side wall is protruded to the opposite side of the holding section and abutted with the pedestal.

The effect of invention

In accordance with the invention it is possible to zero sequence converter module units is fixed on pedestal, situation about being bent even in power line Under, it can also avoid zero sequence converter module units from tilting, and hinder this shortcoming of the operation of adjusting screw.In addition, by making The lower section of abutting part is retreated with tilted shape, so as to easily mount the frame to pedestal, can improve the operation of assembling Property.

Brief description of the drawings

Fig. 1 is the oblique view for representing the outward appearance of the RCCB of composition using the present invention.

Fig. 2 is the top view for the outward appearance for representing the RCCB in Fig. 1.

Fig. 3 be to cover body is separated in Fig. 1 after RCCB the outward appearance oblique view locally deciding what is right and what is wrong and be indicated.

Fig. 4 is to want portion's profile along the X-X lines in Fig. 2.

Fig. 5 is to want portion's profile along the Y-Y lines in Fig. 2.

Fig. 6 is the top view for wanting portion for representing the RCCB after cover body is pulled down in Fig. 1.

Fig. 7 is the oblique view for the outward appearance for representing the RCCB in Fig. 6.

Fig. 8 is the main part i.e. oblique view of the assembled state of zero sequence converter module units for representing the present invention.

Fig. 9 is the oblique view for representing the state after the assembling in Fig. 8.

Figure 10 is the side view for the structure for representing the framework in Fig. 8.

Figure 11 is the oblique view for the assembled state for illustrating zero sequence converter module units.

Figure 12 is the front view for representing to be assembled in the stop part at Figure 11 zero sequence converter module units.

Figure 13 is the oblique view for representing the state after the assembling of the zero sequence converter module units in Figure 11.

Figure 14 is to represent the side view for wanting cage structure in Figure 12.

Figure 15 is the sectional side view for the assembled state for illustrating RCCB.

Figure 16 is the sectional side view for representing the state after the assembling in Figure 15.

The explanation of label

1：Pedestal, 2：Cover body, 3：Load-side connection terminal, 4：Mains side connection terminal, 5：Open-close mechanism section, 6：Tripping operation dress Put, 7：Electric-leakage detection circuit, 10：Zero sequence converter module units, 11：Zero sequence converter main body, 12：Framework, 13：Connecting portion, 14：Framework, 14a：Side wall, 14b：Supporter, 14c：Guiding groove, 14d：Hole, 14e：Holding section, 14f：Abutting part, 14g, 14h： Slit, 14i：Recess, 20：Shunt conductor (power line), 30：Stop part, 52：Handle, 53：Trip(ping) bar, 61：Connection conductor, 62：Bimetal piece, 63：Adjusting screw, 64：Framework

Embodiment

Embodiment 1

First, illustrated using the overall structure of Fig. 1 to Fig. 7 RCCBs constituted to the application present invention.

Fig. 1 is the oblique view for representing the outward appearance of the RCCB of composition using the present invention, and Fig. 2 is represented in Fig. 1 The top view of the outward appearance of RCCB, Fig. 3 be to cover body is separated in Fig. 1 after RCCB outward appearance locally decide what is right and what is wrong and The oblique view being indicated, Fig. 4 is to want portion's profile along the X-X lines in Fig. 2, and Fig. 5 is to want portion to cut open along the Y-Y lines in Fig. 2 Face figure, Fig. 6 is the top view for wanting portion for representing the RCCB after cover body is pulled down, and Fig. 7 is to represent the leakage, breaking in Fig. 6 The oblique view of the outward appearance of device.

In the various figures, RCCB with lower component by being constituted：Pedestal 1 and cover body 2, they, which turn into, houses each part Housing；Multiple load-side connection terminals 3, they expose in front of the housing；Multiple mains side connection terminals 4, they are in shell Expose at the rear of body；Open-close mechanism section 5, it is contained in housing, forms breaker body；Tripgear 6, it was producing electricity The contact of open-close mechanism section 5 is disconnected when stream or short circuit current flow；Electric-leakage detection circuit 7, it detects electric leakage；Relay 8, its basis The output signal of the electric-leakage detection circuit 7, disconnects the contact of open-close mechanism section 5 via actuator 8a；And zero sequence converter Module units 10, it detects leakage current, to the output detection signal of electric-leakage detection circuit 7.In addition, in open-close mechanism section 5, setting There are handle 52 and trip(ping) bar 53, the handle 52 is used to rotate moving contact 51 and be connected with the mains side as fixed contact Terminal 4 is separated or closed, the driven opening/closing mechanism part 5 of trip(ping) bar 53.

Next, wanting the structure and its group that portion is zero sequence converter module units 10 to the present invention using Fig. 8 to Figure 13 Dress order is illustrated.

Fig. 8 and Fig. 9 are the oblique views for the assembled state for representing zero sequence converter module units 10 and represented after assembling State oblique view.

In figure, zero sequence converter module units 10 is made up of such as lower component：Zero sequence converter main body 11；Framework 12, its Support the zero sequence converter main body 11；Connecting portion 13, it is installed on the framework 12, for by the output of zero sequence converter main body 11 Signal is supplied to electric-leakage detection circuit 7；And framework 14, it is combined with framework 12, for by zero sequence converter module units 10 It is fixed on pedestal 1.In addition, as shown in figure 3, the connection pin 13a on the top of connecting portion 13 is arranged at, by solder with electric leakage Detect the printed base plate connection of circuit 7.

The framework 14 is for example made up of supporter 14b and a pair of sidewalls 14a, and a pair of sidewalls 14a is by by polyphenylene sulfide (PPS) resin forming and manufacture and obtain, the both sides of covering zero sequence converter main body 11, supporter 14b links a pair of sidewalls 14a.A pair of sidewalls 14a is configured to, and guiding groove 14c is formed with the inside of it, in addition, as shown in the side in Figure 10, this is a pair Side wall 14a is formed with：Hole 14d, it is chimeric with the projection of framework 12；Holding section 14e, it rearward protrudes in lower section；Abut Portion 14f, it up protrudes in portion to holding section 14e opposite side；A pair of slits 14g, 14h；And recess 14i.

Using said frame 14, zero sequence converter main body 11 and connecting portion 13 are installed on framework 12, by the side of framework 12 The raised 12a in face is inserted along the guiding groove 14c being arranged on the inside of the side wall 14a of framework 14, is arranged at the raised embedding of framework 12 Enter to the hole 14d of framework 14, using the snap-fit configurations, as shown in figure 9, framework 12 is combined as a whole with framework 14.

Next, as shown in figure 11, many (being 3 for 3 cross streams in figure) power lines making to be coated by insulation tube, The through hole of zero sequence converter main body 11 in the i.e. so-called insertion zero sequence converter of shunt conductor 20 module units 10, leads shunting The rear end of body 20 is connected with the connection conductor 61 in tripgear 6 respectively.Bimetal piece is installed in the connection conductor 61 62, also, adjusting screw 63 is installed in the front end of the bimetal piece 62, these parts are integratedly assembled in framework 64, are formed Tripgear 6.

In addition, bimetal piece 62 is configured to, bent if overcurrent is flowed through, via adjusting screw 63 by open-close mechanism section 5 trip(ping) bar 53 is rotated, and moving contact 51 is disconnected.

On the other hand, the front end of shunt conductor 20 is brazed in negative after the through hole of zero sequence converter main body 11 is inserted into Side connection terminal 3 is carried, then, the mains side 20a of the shunt conductor 20 of both sides is inserted into the slit 14g of framework 14, makes shunting The load-side 20b of conductor 20 is inserted into slit 14h.

Then, using the stop part 30 as shown in figure 12 being made up of high temperature insulation paper such as Nomex (registration mark), it is made Upper end 30a and slit 30b engage with the raised 12a of framework 12 and the recess 14i of framework 14, covered as shown in Figure 13, Figure 14 The front of lid zero sequence converter module units 10, is protected and is not come off so as to obtain shunt conductor 20 from the slit 14h of framework 14.

In addition, zero sequence converter main body 11 is inserted along the inclined guiding groove 14c of framework 14, thus, it is possible to such as Figure 14 It is shown, framework 14 is attached in an inclined state, as a result, the configuration of shunt conductor 20 can be carried out, i.e., as follows The mains side 20a of zero sequence converter main body 11 staggers to upside, and load-side 20b staggers to downside.

Finally, as shown in figure 15, the side wall 1a of the formation recess by zero sequence converter module units 10 along pedestal 1 is inserted Enter, as shown in figure 16, make the holding section 14e and side wall 1a of framework 14 bottom locking.Now, it is configured to, makes supporting for framework 14 Socket part 14f is docked with the side wall 1a of pedestal 1, and its reaction force acts is in holding section 14e protrusion direction, thereby, it is possible to prevent Holding section 14e is come off from side wall 1a, and zero sequence converter module units 10 can be firmly secured in pedestal 1.In addition, make to Socket part 14f lower section is obliquely retreated as shown in Figure 10, thus, it is possible to easily carry out zero sequence converter module units 10 Insertion.

Then, the tripgear 6 and its framework 64 that are provided with shunt conductor 20 are inserted and fixed in pedestal 1, also, will The press-in of load-side connection terminal 3 is fixed at the assigned position of pedestal 1, also, by the way that the connection pin 13a of connecting portion 13 is soft The printed base plate for the electric-leakage detection circuit 7 being fixed on pedestal 1 is brazed to, so as to complete the peace of zero sequence converter module units 10 Dress.

As described above, for the framework 14 of support zero sequence converter main body 11, in its side, wall 14a side is set Holding section 14e, sets abutting part 14f in opposite side, holding section 14e is locked to pedestal 1, also, make abutting part 14f and pedestal 1 abuts, thus, it is possible to which zero sequence converter module units 10 is fixed on into pedestal 1, in the case that shunt conductor 20 is bent, Also zero sequence converter module units 10 can be overcome to tilt, and hinders this shortcoming of the operation of adjusting screw 63.In addition, by making Abutting part 14f lower section is retreated with tilted shape, so as to which framework 14 easily is attached into pedestal 1, can further be changed The operability of kind assembling.

Also, by a slanted state being assembled zero sequence converter main body 11 to framework 14, so as to pass through The position for wearing the shunt conductor 20 of zero sequence converter main body 11 is configured to, for example, the power supply of zero sequence converter main body 11 is on the side Side is staggered, and load-side staggers to downside, and shunt conductor 20 before and after zero sequence converter main body 11 can be constituted with Min. Wiring space.In addition, by setting the stop part 30 for covering the preceding surface of framework 14, so as to by zero sequence converter group When dress unit 10 is installed on pedestal 1, the damage of the insulation tube to coating shunt conductor 20 is prevented.

Also, by the way that the upper end 30a and slit 30b of stop part 30 are engaged with zero sequence converter module units 10, from And the shape of the slit 30b upper angleds from upper end 30a towards both sides is able to maintain that, prevent stop part 30 from toppling over to load-side, Heave, can when installing cover body 2 to zero sequence converter module units 10, prevent stop part 30 sandwich to pedestal 1 and cover body 2 it Between and the problem of sustain damage.

In addition, in the above-described embodiments, being configured to, abutting part 14f is set respectively on a pair of sidewalls 14a and base is locked to The holding section 14e of seat 1, even if being configured to set 1 holding section 14e in a side wall 14a, in another side, wall 14a sets 1 Individual abutting part 14f, still is able to framework 14 being fixed on pedestal 1.In addition, being carried out by taking the RCCB of 3 cross streams as an example Illustrate, but in the RCCB of 2 cross streams, also can similarly be implemented.

In addition, the present invention can be combined, or each embodiment is entered in the range of its invention to embodiment The appropriate deformation of row, omission.

Claims

1. a kind of RCCB, it possesses：Housing, it is made up of pedestal (1) and cover body (2)；Multiple load-side connection ends Sub (3) and multiple mains side connection terminals (4), they expose before and after the housing；Open-close mechanism section (5), it is contained in In the housing, breaker body is formed；Tripgear (6), it starts the open-close mechanism section (5)；Zero sequence converter group Unit (10) is filled, it is used to detect electric leakage；And electric-leakage detection circuit (7), it is supplied to the zero sequence converter module units (10) output signal and the electric leakage for detecting circuit, the RCCB are based on the output of the electric-leakage detection circuit (7), driven The tripgear (6) is moved,

The RCCB is characterised by,

The zero sequence converter module units (10) possesses：Zero sequence converter main body (11), it has been inserted into power line (20)；Frame Body (12), it supports the zero sequence converter main body (11)；And framework (14), it is installed on the framework (12), to the zero sequence Current transformer main body (11) is supported, and the framework (14) has：A pair of sidewalls (14a), they are combined with the framework (12)； Supporter (14b), it links a pair of sidewalls (14a)；Holding section (14e), its side wall (14a) lower section protrusion and It is locked to the pedestal (1)；And abutting part (14f), its side wall (14a) upper portion to the holding section (14e) Opposite side protrusion and abutted with the pedestal (1),

The framework (14) is provided with a pair of slits (14g, 14h), to a slit (14g) inserted with the power line (20) Electric power side (20a), to load-side (20b) of another slit (14h) inserted with the power line (20), and make the electricity The electric power side (20a) of the line of force (20) is staggered to upside, the load-side (20b) of the power line (20) is staggered to downside.

2. RCCB according to claim 1, it is characterised in that

Stop part (30) is installed in the framework (14), the stop part (30) covers the load-side of the power line (20) (20b)。

3. RCCB according to claim 1, it is characterised in that

The inclined guiding groove (14c) along on the inside of the side wall (14a) of the framework (14) is set, inserted along the guiding groove (14c) Enter the framework (12), the zero sequence converter main body (11) and the framework (14) are combined.