CN87206001U

CN87206001U - Electrical load controller for the peak periods of light

Info

Publication number: CN87206001U
Application number: CN 87206001
Authority: CN
Inventors: 徐恂如; 王云璋
Original assignee: TONGXIANG ELECTRONIC CONTROLLING DEVICE FACTORY ZHEJIANG PROV
Current assignee: TONGXIANG ELECTRONIC CONTROLLING DEVICE FACTORY ZHEJIANG PROV
Priority date: 1987-04-02
Filing date: 1987-04-02
Publication date: 1987-11-04

Abstract

Disclosed is a timing clock electrical control gear, comprising a timing clock, a main AC contactor, a subsidiary AC contactor and an electronic control circuit. The AC contactors adopt an operating mode of high voltage direct current instant attracting and low-voltage direct current keeping and can automatically change three-phase power supply into phase-absent power supply to make that power loading is switched off, and therefore, the regular supply of electricity in daily life can be ensured during the peak periods of light in the areas with shortage of electrical energy.

Description

Electrical load controller for the peak periods of light

The utility model is a kind of timer clock electrical control gear, is used for the control of power supply.

Present electric energy anxiety, supply falls short of demand, during the lamp peak, just need operate a switch during excess load, cause the also normal stop supplies of household electricity, in order to guarantee the regular supply of household electricity, adopt following method at present: the clock timing switch is installed on each power-equipment, during the lamp peak, three phase mains is cut off in the timing switch action, power-equipment is out of service, and this method amount of investment is big and can not manage concentratedly.

The purpose of this utility model is to propose the central controlled device of a kind of energy, can be by the time separated living load of setting and guarantee the regular supply of household electricity.

The control device that the utility model proposed comprises a timer clock, a main A.C. contactor, a secondary A.C. contactor and an electronic control circuit.This electronic control circuit comprises a high-voltage rectifier, a lower pressure rectifier circuit, a delay switch circuit and a short circuit current.The output of described high-voltage rectifier connects the control coil of secondary A.C. contactor by a contact of timer clock, the output of above-mentioned high-voltage rectifier passes through a normally-closed contact of main A.C. contactor again, described delay switch circuit, receive on the control coil of main A.C. contactor, the output of described lower pressure rectifier circuit is received on the control coil of secondary A.C. contactor and main A.C. contactor by two isolating diodes respectively, the input of described short circuit current is by another contact ground connection of timer clock, and the output of the output of this short circuit current and described lower pressure rectifier circuit joins.

Accompanying drawing is the schematic diagram of this control device.

As shown in drawings, (1) is high-voltage rectifier among the figure.(2) be that lower pressure rectifier circuit (3) is a delay switch circuit.(4) be short circuit current.J1, J2 are two contacts of timer clock, be normally opened contact in the drawings, D10, D11 are isolating diode, their effect is in order to prevent the impact of high pressure to low tension loop, CJ1 is main A.C. contactor, CJ2 is secondary A.C. contactor, CJ1-1, CJ2-1 are their normally-closed contact, normally-closed contact CJ2-1, for high-tension circuit and contactor coil being disconnected and being provided with, delay switch circuit (3) is a reverse-blocking tetrode thyristor circuit, and resistance R 7 capacitor C 7 are formed delay circuit, and controllable silicon SCR 1, SCR2 form switching circuit; Short circuit current (4) is a transistor switching circuit, mainly contains complementary compositing amplification tube BG1, BG2 and capacitor C 3.

When using sort controller main A.C. contactor is serially connected on the three-phase power line, and secondary A.C. contactor is serially connected in wherein on the phase line simultaneously, the contact of timer clock is adjusted in the normal power supply time closed, disconnect in the lamp peak time, the lower pressure rectifier circuit is added to A.C. contactor CJ1 with a low-voltage dc voltage after the controller energized, on the CJ2, this direct voltage can not make the A.C. contactor adhesive, at this moment, because J2 is in closure state, the high direct voltage of high-voltage rectifier just is added on the coil of CJ2 by J2, the CJ2 closure, the high pressure on the CJ2 is disconnected by CJ2-1 again then.CJ2 relies on low-voltage direct to remain in closure state, and on the other hand, high voltage direct current is passed through R7 again, C7 is charged, through after a while, when the voltage on the C7 is enough high, controllable silicon SCR 1 conducting, C7 discharges by SCR1, and this discharging current makes controllable silicon SCR 2 conductings, and switching circuit is opened, high direct voltage is added on the coil of A.C. contactor CJ1 by SCR2, the CJ1 adhesive, then, because CJ1-1 and then disconnects, make the CJ1 coil lose high pressure, keep attracting state by dc low-voltage.Because CJ1, CJ2 are in attracting state, three phase lines all have, normal power supply, when arriving the lamp peak time, contact J1, the J2 of timer clock disconnects, the disconnection of J1 is risen the positive terminal potential of C3 suddenly, and its charging current makes one blink of complementary pipe BG1, BG2, saturation conduction, thereby makes the instantaneous shorted to earth of output of lower pressure rectifier power supply.CJ1, CJ2 trip because of dead electricity, three phase lines are all cut off the power supply, and CJ1-1, CJ2-1 are in closure state again simultaneously, delay switch circuit (3), through SCR2 conducting again after the charging interval of C7, CJ1 obtains a high-voltage pulse and adhesive again, and CJ2 is but because the disconnection of J2 and can't adhesive changes the phase shortage power supply into from three phase supply like this, served as the lamp peak time, J1, J2 are closed again, and CJ2 is adhesive, just return to the state of normal power supply again.

From the above as can be known, this lamp peak load governor can automatically become three phase supply the phase shortage power supply by the time of setting, thereby disconnects living load, guarantees the regular supply of household electricity.In the moment of normal power supply to phase shortage power supply transformation, (about 30 seconds) three-phase electricity complete resection for some time, signal as a kind of supply power mode transformation, the user can close the three-phase power consumption equipment at this moment, to guarantee the safety of equipment, crossed setting-up time, sort controller can recover normally to send again automatically.Since adopt the instantaneous adhesive of A.C. contactor high pressure, the scheme that low-voltage direct keeps, and power consumption economizes.

The timer clock of sort controller can adopt quartzy timing clock, and A.C. contactor can use common contactor, and high-voltage rectifier and lower pressure rectifier circuit can adopt diode bridge rectifier circuit.Electronic control circuit can be made independent device, also clock and electronic control circuit can be made an independent devices, two A.C. contactors that the also available and secondary A.C. contactor CJ2 of main A.C. contactor CJ1 in the sort controller is identical replace, with two phase lines of this two A.C. contactor controls, its Xian Quan And is connected to the position of the coil of former main A.C. contactor CJ1, controls the 3rd phase line with secondary A.C. contactor.

Claims

1, a kind of timer clock electrical control gear.Comprise a timer clock, a main A.C. contactor and an electronic control circuit.It is characterized in that it also comprises a secondary A.C. contactor, described electronic control circuit comprises a high-voltage rectifier (1).A lower pressure rectifier circuit (2), a delay switch circuit (3), with a short circuit current (4), the output of described high-voltage rectifier connects the control coil (CJ2) of secondary A.C. contactor by a contact (J2) of timer clock, on the control coil (CJ1) that the output of above-mentioned high-voltage rectifier is received main A.C. contactor by a normally-closed contact (CJ1-1) and the described delay switch circuit (3) of main A.C. contactor again, the output of described lower pressure rectifier circuit is respectively by two isolating diode (D10, D11) receive on the control coil of secondary A.C. contactor and main A.C. contactor, the input of described short circuit current is by another contact ground connection of timer clock, and the output of the output of this short circuit current and described lower pressure rectifier circuit joins.

2, control device as claimed in claim 1 is characterized in that described delay switch circuit (3) is a reverse-blocking tetrode thyristor circuit.

3, control device as claimed in claim 1 or 2 is characterized in that described short circuit current (4) is a transistor switching circuit.

4, the independent devices partly made of timer clock in the control device as claimed in claim 3 and electronic control circuit.

5, the independent devices partly made of the electronic control circuit of control device as claimed in claim 3.