CN2695983Y

CN2695983Y - Power cut open-phase alarm

Info

Publication number: CN2695983Y
Application number: CN 200420027173
Authority: CN
Inventors: 徐宏忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-13
Filing date: 2004-05-13
Publication date: 2005-04-27
Anticipated expiration: 2014-05-13

Abstract

The utility model relates to a power off and phase lost alarm in the technical field of current supply, which is composed of a casing, a relay, a battery and an alarm circuit. The relay is equipped inside the casing, and is connected outside between the phase wire and the zero line of a power supply line; a test switch, a current-limiting resistor and a fuse are connected in series between the relay and the phase wire; a switch is connected in series between the battery and the contact point of the relay. The power off and phase lost alarm can announce relative persons to take measures by chirping when the power supply line has fault of power-off, etc, so as to reduce or completely eliminate the economic loss caused by power off. The utility model is particularly applied to industrial and mining enterprises and relative companies as well as relative energy consumption places in wide rural areas.

Description

Power failure phase breaking alarm device

Technical field

The utility model relates to a kind of alarm in power supply technique field, relates in particular in supply line occur to have a power failure or a kind of power failure phase breaking alarm device that can alarm during fault such as the phase failure.

Background technology

Grid power blackout and all multifactor supply line's power failure faults that causes, produce not only for the city people's lives and bring very big inconvenience, also like this in the rural area, electricity consumption was local a lot of during agricultural avocation was produced, as the fishes and shrimps booth, big pool aquatic products oxygenation etc. all be unable to do without electric energy, in case have a power failure, its consequence is quite serious, because of power tense, rural electricity consumption often can not get guaranteeing, no matter be daytime or night, power failure is recurrent thing, especially have a power failure night, the people who fell asleep in a day that worked is difficult to find, if prompting can be arranged, just might not suffer a loss, maybe loss is reduced to a minimum, by retrieval, a kind of supply line power failure alarm device is arranged, application number is 01226912.3, and the principal feature of this device has: the one, between the every two-phase of supply line, be connected to relay; The 2nd, be provided with the charge circuit that constitutes by transformer, rectification silicon stack and accumulator; The 3rd, be provided with the warning circuit that comprises that by battery-driven relay contact, warning lamp, siren constitute.The warning device of this structure exists deficiencies such as manufacturing cost height, volume be big.

Summary of the invention

The purpose of this utility model is at the demand and the existing warning device above shortcomings of rural market, and a kind of reliable operation, low cost of manufacture, power failure phase breaking alarm device that volume is little are provided.

Order of the present utility model is achieved through the following technical solutions, a kind of power failure phase breaking alarm device, comprise the relay that inserts supply line, the relay contact that inserts alarm circuit, it is characterized in that relay connects one between each phase line of supply line and zero line, the pilot lamp and the current-limiting resistance of relay serial connection in parallel, also going here and there between phase line and the relay has current-limiting resistance, and supplying the power supply of alarm circuit is dry cell.

The utility model is by being connected to relay between each phase line and zero line; can make the improve parameter unification of relay; the serial connection current-limiting resistance is protective relay effectively; adopt the power supply of dry cell as alarm circuit; can reduce the volume of manufacturing cost and alarm, the utility model compact conformation, reasonable in design is specially adapted to the relevant electricity consumption occasion with relevant unit and vast rural area of industrial enterprise; can play timely warning, reduce the loss.

Description of drawings

Accompanying drawing is the utility model electrical schematic diagram;

In the accompanying drawing: relay J, K switch 1, K2, resistance R 1-R3, light emitting diode D1, triode BG1, capacitor C 1, fuse Q, output transformer T, loudspeaker F, battery E.

Embodiment:

The utility model embodiment accompanying drawing is a single phase power supply; alarm is by housing; inserted phase line in the housing and the relay J between the zero line; the battery E of alarm circuit and confession alarm circuit power supply forms; fixing and the current-limiting resistance R2 of the light emitting diode D1 of relay J serial connection in parallel; light emitting diode D1 is just often luminous in supply line's power supply; light emitting diode D1 is on the panel of housing; be connected in series K switch 1 between relay J and the phase line; fuse Q and current-limiting resistance R1; current-limiting resistance R1 is protective relay effectively; K switch 1 just often can artificially be cut off power supply in power supply; can the advance copy alarm operate as normal; the contact of relay J is serially connected between battery E and the alarm circuit; between the contact of battery E and relay, also be connected in series K switch 2; its effect is after chimes of doom calls out personnel, can cut off K switch 2, so as not to ceaselessly piping in the cause that restores electricity and bringing noise pollution.The contact of relay J just often is in normally open at circuit supply, thereby cut off alarm circuit, in case cut off power supply, the contact of relay J promptly is in closure state, connect alarm circuit, warning circuit can adopt and push away the Pull circuit in the general transistor radio, is made up of resistance R 3, capacitor C 1 and the triode BG1 on output transformer T, the former limit of output transformer T and the loudspeaker F of T level of transformer.K switch 1, K2 all are fixed on the panel of housing.In three-phase and four-line supply line, it is in parallel with each relay normally open contact of zero line to insert each phase line, and each is connected to current-limiting resistance, fuse and experiment switch mutually respectively, and each relay is the light emitting diode and the current-limiting resistance of serial connection in parallel all.

Claims

1, a kind of power failure phase breaking alarm device, comprise the relay that inserts supply line, insert the relay contact of alarm circuit, it is characterized in that relay connects one between each phase line of supply line and zero line, the pilot lamp and the current-limiting resistance of relay serial connection in parallel, also going here and there between phase line and the relay has current-limiting resistance, and supplying the power supply of alarm circuit is dry cell.

2, power failure phase breaking alarm device according to claim 1, before the current-limiting resistance that it is characterized in that being connected in series between relay and the phase line also string switch and fuse are arranged.

3, power failure phase breaking alarm device according to claim 1, the pilot lamp that it is characterized in that the relay parallel connection is a light emitting diode.

4, power failure phase breaking alarm device according to claim 1 is characterized in that string has switch between the relay contact of alarm circuit and the power supply.