CN2733710Y

CN2733710Y - Urban power supply and inversion power supply changeover controller

Info

Publication number: CN2733710Y
Application number: CN 200420016482
Authority: CN
Inventors: 穆瑞国; 杨文国
Original assignee: Chang Zuoxun; Ren Gaiying
Current assignee: Chang Zuoxun; Ren Gaiying
Priority date: 2004-07-31
Filing date: 2004-07-31
Publication date: 2005-10-12
Anticipated expiration: 2014-07-31

Abstract

The utility model relates to an urban power supply and inversion power supply changeover controller, comprising a casing and an internal circuit. The internal circuit comprises an alternating current power supply control circuit and an inversion power supply power supply control circuit. The alternating current power supply control circuit comprises a relay ZJ1 of alternating current power supply, a time relay SJ1 and a branch connected in parallel by a contactor CJ and a relay ZJ2 and then connected in series with the normally open contact SJ1-1 of the time relay SJ1. The normally open contact of the contactor CJ is concatenated in the main supplying loop of the three phase power supply. The normally open contact ZJ2-1 of the relay ZJ2 is concatenated in the main supplying loop of the single phase power supply. The inversion power supply power supply control circuit comprises a branch connected in series by a time relay SJ2 and the normally closed contact ZJ1-1 of the relay ZJ1 and a branch connected in series by a relay ZJ3 and the normally open contact SJ2-1 of the time relay SJ2. The normally open contact ZJ3-1 of the relay ZJ3 is concatenated in the power supplying loop of the inversion power supply. The controller can realize the automatic changeover of supplying power by the urban power supply and the inversion power supply, and can effectively prevent the happening of the accident of reverse power supply by the inversion power supply.

Description

Civil power, inverter switching controller

Technical field

The utility model relates to a kind of electric apparatus control apparatus, is specially civil power, inverter switching controller.

Background technology

The occasion that some are special such as the operating room of hospital, that should accomplish to power is perfectly safe, therefore will be equipped with stand-by power supply.Stand-by power supply is divided three classes at present: double circuit power supply, electric set electric supply and inverter power supply; Wherein inverter power supply little to invest, safeguard simple and convenient, pollute factor such as little and favored.But the mutual switching between mains-supplied and the inverter power supply at present relies on artificial control, forgets easily after the power supply of city power recovery and closes inverter, causes and send electric fault.

Summary of the invention

The utility model does not have the problem of dedicated convert control device at the mutual switching between the power supply of present mains-supplied and inverter, and a kind of civil power, inverter switching controller are provided

The utility model is to adopt following technical scheme to realize: civil power, the inverter switching controller, comprise housing and internal circuit, internal circuit comprises Alternating Current Power Supply control circuit and inverter power-supplying circuit, the Alternating Current Power Supply control circuit comprises the relay ZJ1 of Alternating Current Power Supply, the time relay sj 1 in parallel and by contactor CJ with relay ZJ1, the branch road that relay ZJ2 parallel connection is in series with the normally opened contact SJ1-1 of time relay sj 1 again, the normally opened contact of contactor CJ is serially connected with the three phase mains master for the loop, and the normally opened contact ZJ2-1 of relay ZJ2 is serially connected with the single phase poaer supply master for the loop; The inverter power-supplying circuit comprises branch road that the normally-closed contact ZJ1-1 by time relay sj 2 and relay ZJ1 is in series, by the branch road that the normally opened contact SJ2-1 of relay ZJ3 and time relay sj 2 is in series, the normally opened contact ZJ3-1 of relay ZJ3 is serially connected with the current supply circuit of inverter.When the civil power normal power supply, relay ZJ1 is charged, its normally-closed contact ZJ1-1 disconnects, thereby cut off the power supply of inverter, time relay sj 1 is charged simultaneously, its normally opened contact SJ1-1 (1-5 second) closure of delaying time, make contactor CJ, relay ZJ2 charged, its normally opened contact CJ1, ZJ2-1 closure make the three phase mains master supply loop conducting, three-phase and single phase poaer supply normal power supply for loop and single phase poaer supply master; When mains failure, relay ZJ1, time relay sj 1 dead electricity, the normally opened contact of time relay sj 1 disconnects, make contactor CJ, relay ZJ2 dead electricity, its normally opened contact disconnects, thereby cut off the three phase mains master and supply the loop for loop and single phase poaer supply master, the normally-closed contact ZJ1-1 of relay ZJ1 recovers closed simultaneously, make time relay sj 2 charged, its normally opened contact SJ2-1 (1-5 second) closure of delaying time, make relay ZJ3 charged, its normally opened contact ZJ3-1 closure, connect inverter current supply circuit.Realized the mutual conversion of civil power and inverter power supply by the above-mentioned course of work.

Civil power described in the utility model, inverter switching controller can be realized the mutual conversion of automatic civil power and inverter power supply, civil power is just often preferentially powered by civil power (three-phase and single-phase), switch to the inverter power supply during mains failure, cut off inverter when civil power restores electricity again automatically.This controller architecture is simple, reliable, can prevent effectively that inverter from sending the generation of electric fault.

Description of drawings

Fig. 1 is a surface structure schematic diagram of the present utility model;

Fig. 2 is the internal circuit schematic diagram;

Embodiment

Civil power, inverter switching controller, comprise housing and internal circuit, internal circuit comprises Alternating Current Power Supply control circuit and inverter power-supplying circuit, the branch road that the Alternating Current Power Supply control circuit comprises the relay ZJ1 of Alternating Current Power Supply, the time relay sj 1 in parallel with relay ZJ1 and is in series with the normally opened contact SJ1-1 of time relay sj 1 by contactor CJ, relay ZJ2 parallel connection again, the normally opened contact CJ1 of contactor CJ is serially connected with the three phase mains master for the loop, and the normally opened contact ZJ2-1 of relay ZJ2 is serially connected with the single phase poaer supply master for the loop; The inverter power-supplying circuit comprises branch road that the normally-closed contact ZJ1-1 by time relay sj 2 and relay ZJ1 is in series, by the branch road that the normally opened contact SJ2-1 of relay ZJ3 and time relay sj 2 is in series, the normally opened contact ZJ3-1 of relay ZJ3 is serially connected with the current supply circuit of inverter.

Relay ZJ2 two ends in the Alternating Current Power Supply control circuit are parallel with indicator light L1, and indicator light L1 is bright, illustrate that mains-supplied is normal; The two ends of relay ZJ3 in the inverter power-supplying circuit are parallel with indicator light L2, and indicator light L2 is bright, are illustrated as the inverter power supply.

Indicator light L1, L2 are fixed on the case panel.The two ends, contact of internal circuit contactor CJ, relay ZJ2, ZJ3 cause outside the housing with lead, perhaps link terminal on the case side panel, and each two ends, contact links to each other with binding post with lead, like this so that being connected of each contact and related circuit.

Claims

1, a kind of civil power, the inverter switching controller, comprise housing and internal circuit, it is characterized by: internal circuit comprises Alternating Current Power Supply control circuit and inverter power-supplying circuit, the Alternating Current Power Supply control circuit comprises the relay (ZJ1) of Alternating Current Power Supply, the time relay in parallel (SJ1) and by contactor (CJ) with relay ZJ1, the branch road that relay (ZJ2) parallel connection is in series with the normally opened contact (SJ1-1) of the time relay (SJ1) again, the normally opened contact CJ1 of contactor (CJ) is serially connected with the three phase mains master for the loop, and the normally opened contact (ZJ2-1) of relay (ZJ2) is serially connected with the single phase poaer supply master for the loop; The inverter power-supplying circuit comprises branch road that the normally-closed contact (ZJ1-1) by the time relay (SJ2) and relay (ZJ1) is in series, by the branch road that the normally opened contact (SJ2-1) of the relay (ZJ3) and the time relay (SJ2) is in series, the normally opened contact (ZJ3-1) of relay (ZJ3) is serially connected with the current supply circuit of inverter.

2, civil power as claimed in claim 1, inverter switching controller, it is characterized by: the relay in the Alternating Current Power Supply control circuit (ZJ2) two ends are parallel with indicator light (L1), and the two ends of the relay in the inverter power-supplying circuit (ZJ3) are parallel with indicator light (L2).