CN2144360Y

CN2144360Y - Protector for power cut and thunderbolt

Info

Publication number: CN2144360Y
Application number: CN 92220235
Authority: CN
Inventors: 杨本初
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-08
Filing date: 1992-09-08
Publication date: 1993-10-20
Anticipated expiration: 2002-09-08

Abstract

The utility model discloses a protector for power cut and thunderbolt, which is suitable for factories, mines, the institutions, schools, families, etc., to protect the electrical equipment under the condition of states, such as the power cut, the thunderbolt, etc. The utility model is connected with a self recovery switch, a relay, and a fuse in a parallel way to be integrally bridged on a line. The self recovery switch is connected with a self-insurance contact in the parallel way. The line is output through two sets of make contacts. The protection function is obtained by the operation of the relay. The protector has simple structure and reliable work, and a method of cutting the electric source is completely adopted to generate the protection function.

Description

Protector for power cut and thunderbolt

The utility model is a kind of power failure protector.Can be struck by lightning to line outage, quilt, voltage superelevation etc. all can be cut off the electricity supply immediately, and load is played a good protection.Be suitable for protection to various electrical equipment.

Existing protector is general all to sending the situation of electricity can't produce protective effect after having a power failure again, causes people because of forgetting after having a power failure that closing power supply causes a large amount of wastes, very causes and causes burning apparatus, breaking out of fire.The Biochemical Lab of Chengdu key university brings about great losses to country with regard to therefore fire disaster taking place.

Task of the present utility model provides a kind of power failure thunderbolt protector, and it can effectively protect electric equipment running into line outage, be struck by lightning, exempting from damage under the abnormal conditions such as voltage superelevation.Thereby reach electrical equipment security personnel's purpose.

Task of the present utility model is finished as follows: have the protector that many windings point relay, fuse, self-healing switch, signal lamp are formed by one.The self-healing switch is with after one group of self-insurance contact of relay is in parallel, again with the relay coil of wire, fuse half connection, and across-the-line together again.To output, signal lamp is connected across input to circuit behind the relay normally opened contact.These elements are welded on the printed circuit board, but reinstall in garden shape or the square plastics can, have formed a complete power failure, thunderbolt, protector like this.During use, only need the output of ammeter connect the protector input, protector output connects various electric equipments.Click the self-healing switch during use, the device that returns that relay adhesive, power supply are formed through self-insurance contact, relay, fuse makes the relay self-insurance.Power supply is exported through normally opened contact.When the situation that runs into unexpected power failure, relay discharges, send electricity again after, relay is failure to actuate, thereby has guaranteed to send electricity to come also can not cause any harm again forgetting after the power failure under the situation of closing mains switch.Want starting device, must be from newly clicking the self-healing switch.Produce a high voltage or produced high voltage because of other reason when outer circuit is subjected to thunderbolt, this high voltage at first makes the electric current of relay circuit increase, because relay circuit is in very little (milliampere level) of electric current and another timing at ordinary times, fuse can design very accurately, when electric current one increase, fuse is fusing at once, and relay discharges, power supply is cut off, thereby has guaranteed the safety of electrical equipment.Owing to adopted this power failure thunderbolt protector, to compare with existing protector, the very outstanding advantage that it has is can take protection to unexpected power failure, also can take protection to the high voltage that is struck by lightning or add.The mode of protection is to cut off the electricity supply effectively immediately, has reached the purpose that can both effectively protect multiple harm.

Below with reference to accompanying drawing utility model is described in further detail.

Fig. 1 is an electrical schematic diagram of the present utility model.

Fig. 2 is an external form vertical view of the present utility model.

Fig. 3 is an external form front view of the present utility model.

With reference to Fig. 1, self-healing K switch and self-insurance contact J ₃After the parallel connection in parallel with relay J, fuse P again after, across-the-line, indicator light D is connected across input.

The power supply that circuit is sent here inserts protector input (1-1 ').Via two groups of normally opened contact J ₁, J ₂After, to output (2-2 ') output.

Claims

1, power failure thunderbolt protector of being made up of self-resetting switch, relay, fuse and indicator light is characterized in that: self-resetting switch (K), relay (J), molten continue device (P) series connection back across-the-line, self-resetting switch (K) and self-insurance contact (J ₃) parallel connection, indicator light (D) is connected across input, and circuit is through normally opened contact (J ₁), (J ₂) output.

2, power failure thunderbolt protector according to claim 1, it is characterized in that: the blowout current of fuse (P) is greater than 2～5 milliamperes of relay attract currents.