CN201616406U

CN201616406U - Miniature leakage alarming and non-operating circuit breaker

Info

Publication number: CN201616406U
Application number: CN2009202957816U
Authority: CN
Inventors: 卢湛锐; 向阳清
Original assignee: FOSHAN JIAHUA ELECTRONIC TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: FOSHAN JIAHUA ELECTRONIC TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2009-12-30
Filing date: 2009-12-30
Publication date: 2010-10-27
Anticipated expiration: 2019-12-30

Abstract

The utility model discloses a miniature leakage alarming and non-operating circuit breaker free, which consists of a DZ47 series circuit breaker 1 and a leakage alarming controller 2, wherein the leakage alarming controller 2 includes a leakage indicator button 21, a tripper 22, a controller 23, a mutual inductance coil 24, a testing button 25, a normally closed contact 261, and a normally opened contact 262, and further includes a button tripping rod 27 and an intermediate relay 26; the intermediate relay 26 has one terminal connected with a common terminal of the normally closed contact 261 and the normally opened contact 262, and the other terminal connected with a loading terminal of the DZ47 series circuit breaker 1; the button tripping rod 27 is mounted between the leakage indicator button 21 and the tripper 22; and the button tripping rod 27 can be pulled by the tripper 22 to drive the leakage indicator button 21 to operate. The miniature leakage alarming and non-operating circuit is characterized by simple structure, small volume, low cost, clear alarm signals and convenient use, and can be widely applied to the protection field of low-voltage appliances, particularly in the situation requiring the output of alarming signals rather than the power cut-off during leakage.

Description

A kind of small-sized leakage-current alarm circuit breaker of being failure to actuate

Technical field

The utility model belongs to field of circuit breakers, is specifically related to a kind of small-sized leakage-current alarm circuit breaker of being failure to actuate.

Background technology

Existing DZ47 series leakage-current alarm circuit breaker is to be assemblied to form by three parts, shown in Fig. 1 institute, comprise DZ47 series main power source circuit breaker 1, leakage tripping device 2, ann reset switch 3, warning auxiliary contact module accessories 4, the major loop lead is drawn the wiring hole that passes the leakage-current alarm module from the main power source circuit breaker, is connected to load.

DZ47 series main power source circuit breaker mainly is made up of insulation crust, operating mechanism, dynamic/static contact, overcurrent trip, arc control device etc.; The leakage-current alarm module is equipped with electronic control circuit, release etc., and the wiring hole of leakage-current alarm module is equipped with zero sequence current mutual inductor; Warning auxiliary contact module is equipped with contact switching mechanism.Its operation principle is: the turnover current value that is detected the major loop lead by the zero sequence current mutual inductor of leakage-current alarm module wiring hole, uneven and when reaching set point when above-mentioned current value, control circuit sends signal, make the trip coil energising, inhale moving iron core action, promote the ann reset switch trip by the leakage-current alarm module, the ann reset switch trip drives warning auxiliary contact module accessories changeover contact, output alarm signal again.DZ47 series main power source circuit breaker because of with leakage-current alarm module tripping mechanism do not have related, so the serial main power source circuit breaker of DZ47 is failure to actuate when line electrical leakage.There is following shortcoming in above-mentioned DZ47 series leakage-current alarm circuit breaker:

1) product structure is loaded down with trivial details, and volume is big, the cost height.

2) product is provided with main power source circuit breaker and ann reset switch, and their shape and structure is identical, is easy to cause the misunderstanding in the use.

3) to pass leakage-current alarm module wiring hole to the major loop lead during terminal block, receive the main power source circuit breaker again, make the wiring inconvenience.

Summary of the invention

To be solved in the utility model is the problem that complex structure, volume are big, cost is high that existing leakage-current alarm circuit breaker exists.

The utility model also will solve be existing leakage-current alarm circuit breaker exist cause the misunderstanding in the use and the problem of wiring difficulty easily.

Addressing the above problem the technical scheme of taking is: a kind of small-sized leakage-current alarm circuit breaker of being failure to actuate, form by DZ47 Series Circuit Breakers 1 and leakage-current alarm controller 2, leakage-current alarm controller 2 comprises electric leakage instruction button 21, release 22, controller 23, mutual inductor 24, test button 25, auxiliary relay 26, normally closed interlock 261, normally open contact 262, described leakage-current alarm controller 2 also comprises button release lever 27, one of described auxiliary relay 26 terminates at the common port of described normally closed interlock 261 and described normally open contact 262, and the other end is connected on the load end of described DZ47 Series Circuit Breakers 1; Described button release lever 27 is installed between described electric leakage instruction button 21 and the described release 22, and described button release lever 27 can and drive described electric leakage instruction button 21 actions by described release 22 pullings.

The utility model operation principle is as follows: output signal to controller 23 when the major loop lead has leakage current when mutual inductor 24 detects, the coil of release 22, auxiliary relay 26 is switched on simultaneously, release 22 pulling button release levers 27 are upspring electric leakage instruction button 21, send the electric leakage indication.Because it is related that button release lever 27 and DZ47 Series Circuit Breakers 1 do not have, so DZ47 circuit breaker 1 does not trip.Auxiliary relay 26 coil electricities make normally closed interlock 261 disconnect normally open contact 262 closures: to cut off the voltage of release 22 coils during normally closed interlock 261 disconnections, avoid release 22 coils to switch on for a long time simultaneously; Normally open contact 262 closures make auxiliary relay 26 coils directly power for a long time without controller 23, keep attracting state, normally open contact 262 closed output alarm signals.

The beneficial effects of the utility model are: (1) is simple in structure, volume is little, cost is low.Three parts than prior art constitute, and the utility model only is made of the two large divisions, and not only structure obtains simplifying, and volume is also reduced; And the omission of building block directly brings the advantage on the cost.(2) differentiation is easy, easy for installation.Very easily the obscuring of main power source circuit breaker and ann reset switch in the prior art, the utility model has omitted the ann reset switch, thus in the differentiation of parts, be difficult for obscuring, and owing to structural simplification makes that line is installed is convenient.

Because above-mentioned beneficial effect, the utility model is widely used in the protection field of low-voltage electrical apparatus, only output alarm signal and the occasion that need not cut off the electricity supply when especially leaking electricity.

Description of drawings

Fig. 1 is the prior art constructions schematic diagram.

Fig. 2 is the utility model external structure schematic diagram.

Fig. 3 is the utility model circuit theory diagrams.

Identifier declaration: 1--DZ47 Series Circuit Breakers; 2--leakage-current alarm controller; The 21--instruction button of leaking electricity; The 22-release; The 23--controller; The 24-mutual inductor; The 25-test button; The 26--auxiliary relay; The 261--normally closed interlock; The 262--normally open contact; 27--button release lever.

Embodiment

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

With reference to Fig. 2, the utility model is made up of DZ47 circuit breaker 1 and leakage-current alarm controller 2.DZ47 circuit breaker 1 mainly is made up of insulation crust, operating mechanism, dynamic/static contact, overcurrent trip, arc control device etc., because of it is a known technology, so above-mentioned parts are not shown in Figure 2, and also no longer explanation.Leakage-current alarm controller 2 mainly is made up of insulation crust, major loop lead, zero sequence current mutual inductor, control circuit, release, test button, electric leakage instruction button, button release lever, auxiliary relay, junction block, and the detailed description of each parts is referring to Fig. 3.

With reference to Fig. 3, a kind of small-sized leakage-current alarm circuit breaker of being failure to actuate, form by DZ47 Series Circuit Breakers 1 and leakage-current alarm controller 2, leakage-current alarm controller 2 comprise electric leakage instruction button 21, release 22, controller 23, mutual inductor 24, test button 25, auxiliary relay 26, normally closed interlock 261, normally open contact 262, button release lever 27, etc. each component units.One of the auxiliary relay 26 of the utility model setting terminates at the common port of described normally closed interlock 261 and described normally open contact 262, and the other end is connected on the load end of described DZ47 Series Circuit Breakers 1; The button release lever 27 of the utility model setting is installed between electric leakage instruction button 21 and the release 22, and button release lever 27 can and drive 21 actions of electric leakage instruction button by release 22 pullings.Release 22 is used for control electric leakage instruction button 21 and upsprings and show the electric leakage state, auxiliary relay 26 by normally closed interlock 261, normally open contact 262 control respectively that release 22 disconnects, the self-insurance of auxiliary relay 26 coils and the connection output alarm signal of Alarm contactor.

Claims

1. small-sized leakage-current alarm circuit breaker of being failure to actuate, form by DZ47 Series Circuit Breakers (1) and leakage-current alarm controller (2), leakage-current alarm controller (2) comprises electric leakage instruction button (21), release (22), controller (23), mutual inductor (24), test button (25), auxiliary relay (26), normally closed interlock (261), normally open contact (262), it is characterized in that: described leakage-current alarm controller (2) also comprises button release lever (27), one of described auxiliary relay (26) terminates at the common port of described normally closed interlock (261) and described normally open contact (262), and the other end is connected on the load end of described DZ47 Series Circuit Breakers (1); Described button release lever (27) is installed between described electric leakage instruction button (21) and the described release (22), and described button release lever (27) can spur and drive described electric leakage instruction button (21) action by described release (22).