CN205429697U

CN205429697U - Type B residual current operated circuit breaker

Info

Publication number: CN205429697U
Application number: CN201620206416.3U
Authority: CN
Inventors: 王继杰; 王宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-08
Filing date: 2016-03-08
Publication date: 2016-08-03
Anticipated expiration: 2026-03-08

Abstract

The utility model relates to a type B residual current operated circuit breaker, including the casing and install the main power source line in the casing, tripping device, sine wave voltage signal generator, the zero sequence current detector, two pass voltage comparison circuit, two pass signal detecting circuit, two pass time delay gating circuit, three -phase four -wire rectifier circuit, power supply circuit, trip circuit, wherein by the low pressure direct current relay, a second capacitor, first stabilivolt constitution controller, by field effect transistor, first resistance, the vehicle charging control system further comprises a second resistor, the stationary flow source that the second stabilivolt is constituteed, by third electric capacity, the steady voltage source that three -terminal voltage regulator tube constitutes, controller, stationary flow source, steady voltage source press the series -wound loop and construct power supply circuit, consequently reach the purpose of reliability height, energy -conserving, the wide voltage work of low power dissipation, power supply circuit simultaneous control trip circuit makes type B electric leakage circuit breaker according to electronic type work when main power supply normal, the three -phase four -wire is only one automatic according to electromagnetic type work when electrified mutually, reaches the purpose of guaranteeing the safety utilization of electric power.

Description

A kind of Type B residual current action breaker

Technical field

This utility model relates to a kind of RCCB, particularly a kind of Type B residual current action breaker.

Background technology

Existing residual current action breaker (hereinafter referred to as RCCB); it is divided into AC type RCCB, A type RCCB and Type B RCCB by residual current acting characteristic; simple alternating current residual action current is played protection by AC type RCCB; simple alternating current, pulsating direct current residual action current are played protection by A type RCCB, and simple alternating current, pulsating direct current, smooth direct current residual action current are played protection by Type B RCCB.

Current its holding function of Type B leakage, breaking is all (electronic type) relevant with supply voltage; break down (as, three-phase and four-line has broken two-phase and the neutral conductor once main power source; an only surplus phase) electronic type residual current circuit breaker just cannot normally work; cause the hidden danger that can not protect; as Patent Office of the People's Republic of China's Authorization Notice No. has the total current type residual current actuating apparatus of element fault automatic trip function, an example in CN101217232.B.

Abroad also have according to this known manner of data-collection at present, electromagnetic type and electronic type together in the Type B RCCB of one, but there is following defect: 1. circuit complicated, 2. power consumption the most energy-conservation, 3. when main power voltage is down to every relatively 50V, smooth direct current residual action current Type B residual current action breaker cisco unity malfunction occurs.

Summary of the invention

nullThis utility model to solve above-mentioned defect and provide a kind of Type B residual current action breaker，Including housing and the main power line that is arranged in housing、Tripping mechanism、Sine voltage signal generator 1、Zero-sequence current detector 2、Two pass voltage comparator circuit 3、Two pass signal detection circuit 4、Two pass time delay gating circuit 5、Three-phase and four-line rectification circuit 6、Power circuit 7、Trip circuit 8，Described main power line connects with tripping mechanism，Tripping mechanism is connected with trip circuit 8，Sine voltage signal generator 1 is connected with zero-sequence current detector 2，Zero-sequence current detector 2 is connected with two pass voltage comparator circuit 3，Two pass voltage comparator circuit 3 is connected with two pass signal detection circuit 4，Two pass signal detection circuit 4 is connected with two pass time delay gating circuit 5，Two pass time delay gating circuit 5 is connected with trip circuit 8，The input of described three-phase and four-line rectification circuit 6 is connected with main power line，The outfan of three-phase and four-line rectification circuit 6 is connected with power circuit 7，Power circuit 7 is connected with trip circuit 8，Wherein said power circuit 7 is by the first electric capacity C1、Second electric capacity C2、First stabilivolt Dz1、Low-voltage direct controls relay K J1、First resistance R1、Second stabilivolt Dz2、Field effect transistor VT1、Second resistance R2、3rd electric capacity C3、Three-terminal voltage-stabilizing pipe V1 forms、The cathode output end of described three-phase and four-line rectification circuit 6 and one end of the first electric capacity C1、The negative pole of the first stabilivolt Dz1、The positive terminal of the second electric capacity C2、The positive terminal that low-voltage direct controls relay K J1 is in parallel，The positive pole of the first stabilivolt Dz1、The negative pole end of the second electric capacity C2、One end of first resistance R1、The negative pole end that low-voltage direct controls relay K J1 is in parallel with the drain D of field effect transistor VT1，The grid G of field effect transistor VT1 and the other end of the first resistance R1、The negative pole of the second stabilivolt Dz2 is in parallel，The source S of field effect transistor VT1 is connected with one end of the second resistance R2，The other end of the second resistance R2、The positive terminal of the 3rd electric capacity C3 is in parallel with the 1st foot of three-terminal voltage-stabilizing pipe V1，The other end of the first electric capacity C1、The positive pole of the second stabilivolt Dz2、The negative pole end of the 3rd electric capacity C3、2nd foot of three-terminal voltage-stabilizing pipe V1 is in parallel with the cathode output end of three-phase and four-line rectification circuit 6，3rd foot of three-terminal voltage-stabilizing pipe V1 is power circuit 7 positive supply VDD outfan.

nullWherein trip circuit 8 is by permanent magnet releaser DJ1、Controllable silicon SCR 1、4th electric capacity C4、5th electric capacity C5、Bilateral diode VD1、Low-voltage direct controls the first contact sets KJ1-1 and the second contact sets KJ1-2 composition of relay K J1，The positive terminal of described permanent magnet releaser DJ1 controls the movable contact of relay K J1 the 1st contact sets KJ1-1 with low-voltage direct、The positive pole of the 4th electric capacity C4、One end of bilateral diode VD1 is in parallel，The other end of bilateral diode VD1 and the positive pole of the 5th electric capacity C5、The 5th winding HL5 one end of zero-sequence current detector 2 is in parallel，The normally-closed contact that the 5th winding HL5 other end of zero-sequence current detector 2 controls relay K J1 the first contact sets KJ1-1 with low-voltage direct is connected，Low-voltage direct controls the normally opened contact of relay K J1 the first contact sets KJ1-1 and is connected with power circuit 7 positive supply VDD outfan，The movable contact that the negative pole end of permanent magnet releaser DJ1 controls relay K L1 the second contact sets KJ1-2 with low-voltage direct is connected，Low-voltage direct controls the normally-closed contact of relay K J1 the second contact sets KJ1-2 and the negative pole parallel connection of the negative pole of the 4th electric capacity C4 and electric capacity C5，Low-voltage direct controls the normally opened contact of relay K J1 the second contact sets KJ1-2 and couples with the anode A of controllable silicon SCR 1，The negative electrode K of controllable silicon SCR 1 is connected with the cathode output end of three-phase and four-line rectification circuit 6，The trigger electrode G of controllable silicon SCR 1 is connected with the signal output part of two pass time delay gating circuit 5.

Advantage of the present utility model: dependable performance, low in energy consumption energy-conservation, convenient adaptation is produced in enormous quantities in debugging, low cost.

Below in conjunction with drawings and Examples, detailed content of the present utility model is described.

Accompanying drawing explanation

Fig. 1 is schematic diagram of the present utility model and circuit theory diagrams.

Fig. 2 is this utility model main power line schematic diagram when powering normal and circuit theory diagrams.

Fig. 3 be this utility model main power line only have a phase to power and the neutral conductor disconnect time schematic diagram and circuit theory diagrams.

Detailed description of the invention

As it is shown in figure 1, this utility model includes that housing and the main power line being arranged in housing, tripping mechanism, sine voltage signal generator 1, zero-sequence current detector 2, two pass voltage comparator circuit 3, two pass signal detection circuit 4, two pass time delay gating circuit 5, three-phase and four-line rectification circuit 6, power circuit 7, trip circuit 8 form.

nullDescribed power circuit 7 is by the cathode output end of three-phase and four-line rectification circuit 6 and the first electric capacity C1、The negative pole of the first stabilivolt Dz1、The positive terminal of the second electric capacity C2、The positive terminal that low-voltage direct controls relay K J1 is in parallel，The positive pole of the first stabilivolt Dz1、The negative pole end of the second electric capacity C2、One end of first resistance R1、The negative pole end that low-voltage direct controls relay K J1 is in parallel with the drain D of field effect transistor VT1，The grid G of field effect transistor VT1 and the other end of the first resistance R1、The negative pole of the second stabilivolt Dz2 is in parallel，The source S of field effect transistor VT1 is connected with one end of the second resistance R2，The other end of the second resistance R2、The positive terminal of the 3rd electric capacity C3 is in parallel with the 1st foot of three-terminal voltage-stabilizing pipe V1，The other end of the first electric capacity C1、The positive pole of the second stabilivolt Dz2、The negative pole end of the 3rd electric capacity C3、2nd foot of three-terminal voltage-stabilizing pipe V1 is in parallel with the cathode output end of three-phase and four-line rectification circuit 6，3rd foot of three-terminal voltage-stabilizing pipe V1 is power circuit 7 positive supply VDD outfan.

nullThe positive terminal of described permanent magnetism dropout DJ1 controls the movable contact of relay K J1 the 1st contact sets KJ1-1 with low-voltage direct、The positive pole of the 4th electric capacity C4、One end of bilateral diode VD1 is in parallel，The other end of two-way two wooden fork pipe VD1 and the positive pole of the 5th electric capacity C5、The 5th winding HL5 one end of zero-sequence current detector 2 is in parallel，The normally-closed contact that the 5th winding other end of zero-sequence current detector 2 controls relay K J1 the first contact sets KJ1-1 with low-voltage direct is connected，Low-voltage direct controls the normally opened contact of relay K J1 the first contact sets KJ1-1 and is connected with power circuit positive supply VDD outfan，The movable contact that the negative pole end of permanent magnet releaser DJ1 controls relay K J1 the second contact sets KJ1-2 with low-voltage direct is connected，Low-voltage direct controls the normally-closed contact of relay K J1 the second contact sets KJ1-2 and the negative pole parallel connection of the negative pole of the 4th electric capacity C4 and the 5th electric capacity C5，The anode A of normally opened contact and controllable silicon SCR 1 that low-voltage direct controls relay K J1 the second contact sets KJ1-2 is connected，The negative electrode K of controllable silicon SCR 1 is connected with the cathode output end of three-phase and four-line rectification circuit 6，The trigger electrode G of controllable silicon SCR 1 is connected with the outfan of two pass time delay gating circuit 5.

Shown in Fig. 2, when this utility model Type B RCCB is powered (as. three-phase and four-line, three-phase, two-phase, an addition neutral conductor), low-voltage direct controls relay K J1 and obtains electric adhesive, the movable contact of the first contact sets KJ1-1 closes with normally opened contact, disconnect the signal circuit of the 5th winding of zero-sequence current detector 2, thus do not affect the excited signal on zero-sequence current detector 2, it is allowed to zero-sequence current detector and normally detects electric leakage signal.

Now, if any electric leakage, electric shock time; residual action current makes zero-sequence current detector 2 produce magnetic and adjusts signal; this signal is through two pass voltage comparator circuit 3, two pass signal detection circuit 4; make two pass time delay gating circuit 5 export one touch signal to controllable silicon SCR 1 trigger electrode G; controllable silicon SCR 1 turns on; permanent magnet releaser DJ1 obtains electric work, promotes tripping mechanism tripping operation power-off, reaches the purpose of Type B leakage, breaking protection.

nullWhen main power source occurs that one is mutually charged，And other two-phase and the neutral conductor are all without time electric，Low-voltage direct controls relay electric-loss and is failure to actuate，As shown in Figure 3，Low-voltage direct controls the movable contact of relay K J1 the first contact sets KJ1-1 and the second contact sets KJ1-2 and each closes with normally-closed contact，The 5th winding HL5 making zero-sequence current detector 2 is connected with permanent magnet releaser DJ1，(the second winding HL2 due to zero-sequence current detector 2 when leak shock occurs in charged phase line、Tertiary winding HL3、4th circuit input impedance connect around HL4 group is the biggest，Therefore the electric leakage signal on the 5th winding HL5 will not be attenuated)，5th winding HL5 of zero-sequence current detector 2 just induces the electric leakage signal that same residual action current is directly proportional，This signal is through the 4th electric capacity C4、It is added on permanent magnet releaser DJ1 after 5th electric capacity C5 multiplication of voltage，Permanent magnet releaser DJ1 is made to discharge，Promote tripping mechanism tripping operation power-off，When reaching mains power failure，Type B RCCB also can play earth leakage protective purpose.

As shown in Figure 1, low-voltage direct controls relay K J1, the second electric capacity C2, the first stabilivolt composition control device, constant-current source is formed by field effect transistor VT1, the first resistance R1, the second resistance R2, the second stabilivolt, source of stable pressure is formed by the 3rd electric capacity C3 and three-terminal voltage-stabilizing pipe V1, (current stabilization value 8mA), because this controller, constant-current source, source of stable pressure constitute series loop, so reaching the purpose that reliability energy-conservation, Width funtion high, low in energy consumption (input AC50V～380V, export DC10V ± 5%) works.

Claims

null1. a Type B residual current action breaker，Including housing and the main power line that is arranged in housing、Tripping mechanism、Sine voltage signal generator (1)、Zero-sequence current detector (2)、Two pass voltage comparator circuit (3)、Two pass signal detection circuit (4)、Two pass time delay gating circuit (5)、Three-phase and four-line rectification circuit (6)、Power circuit (7)、Trip circuit (8)，Described main power line connects with tripping mechanism，Tripping mechanism is connected with trip circuit (8)，Sine voltage signal generator (1) is connected with zero-sequence current detector (2)，Zero-sequence current detector (2) is connected with two pass voltage comparator circuit (3)，Two pass voltage comparator circuit (3) is connected with two pass signal detection circuit (4)，Two pass signal detection circuit (4) is connected with two pass time delay gating circuit (5)，Two pass time delay gating circuit (5) is connected with trip circuit (8)，The input of described three-phase and four-line rectification circuit (6) is connected with main power line，The outfan of three-phase and four-line rectification circuit (6) is connected with power circuit (7)，Power circuit (7) is connected with trip circuit (8)，It is characterized in that described power circuit (7) is by the first electric capacity (C1)、Second electric capacity (C2)、First stabilivolt (Dz1)、Low-voltage direct controls relay (KJ1)、First resistance (R1)、Second stabilivolt (Dz2)、Field effect transistor (VT1)、Second resistance (R2)、3rd electric capacity (C3)、Three-terminal voltage-stabilizing pipe (V1) forms，The cathode output end of described three-phase and four-line rectification circuit (6) and one end of the first electric capacity (C1)、The negative pole of the first stabilivolt (Dz1)、The positive terminal of the second electric capacity (C2)、The positive terminal that low-voltage direct controls relay (KJ1) is in parallel，The positive pole of the first stabilivolt (Dz1)、The negative pole end of the second electric capacity (C2)、One end of first resistance (R1)、The negative pole end that low-voltage direct controls relay (KJ1) is in parallel with the drain D of field effect transistor (VT1)，The grid G of field effect transistor (VT1) and the other end of the first resistance (R1)、The negative pole of the second stabilivolt (Dz2) is in parallel，The source S of field effect transistor (VT1) is connected with one end of the second resistance (R2)，The other end of the second resistance (R2)、The positive terminal of the 3rd electric capacity (C3) is in parallel with the 1st foot of three-terminal voltage-stabilizing pipe (V1)，The other end of the first electric capacity (C1)、The positive pole of the second stabilivolt (Dz2)、The negative pole end of the 3rd electric capacity (C3)、2nd foot of three-terminal voltage-stabilizing pipe (V1) is in parallel with the cathode output end of three-phase and four-line rectification circuit (6)，3rd foot of three-terminal voltage-stabilizing pipe (V1) is power circuit (7) positive supply VDD outfan.
nullA kind of Type B residual current action breaker the most according to claim 1，It is characterized in that described trip circuit (8) is by permanent magnet releaser (DJ1)、Controllable silicon (SCR1)、4th electric capacity (C4)、5th electric capacity (C5)、Bilateral diode (VD1)、Low-voltage direct controls the first contact sets (KJ1-1) and the second contact sets (KJ1-2) composition of relay (KJ1)，The positive terminal of described permanent magnet releaser (DJ1) controls the movable contact of relay (KJ1) the 1st contact sets (KJ1-1) with low-voltage direct、The positive pole of the 4th electric capacity (C4)、One end of bilateral diode (VD1) is in parallel，The other end of bilateral diode (VD1) and the positive pole of the 5th electric capacity (C5)、The 5th winding (HL5) one end of zero-sequence current detector (2) is in parallel，The normally-closed contact that 5th winding (HL5) other end of zero-sequence current detector (2) controls relay (KJ1) the first contact sets (KJ1-1) with low-voltage direct is connected，Low-voltage direct controls the normally opened contact of relay (KJ1) the first contact sets (KJ1-1) and is connected with power circuit (7) positive supply VDD outfan，The movable contact that the negative pole end of permanent magnet releaser (DJ1) controls relay (KJ1) the second contact sets (KJ1-2) with low-voltage direct is connected，Low-voltage direct controls the normally-closed contact of relay (KJ1) the second contact sets (KJ1-2) and the negative pole parallel connection of the negative pole of the 4th electric capacity (C4) and the 5th electric capacity (C5)，Low-voltage direct controls the normally opened contact of relay (KJ1) the second contact sets (KJ1-2) and couples with the anode A of controllable silicon (SCR1)，The negative electrode K of controllable silicon (SCR1) is connected with the cathode output end of three-phase and four-line rectification circuit (6)，The trigger electrode G of controllable silicon (SCR1) is connected with the signal output part of two pass time delay gating circuit (5).