CN201146380Y

CN201146380Y - Protective equipment for decompression, phase-off and self-switchover

Info

Publication number: CN201146380Y
Application number: CNU200820091809XU
Authority: CN
Inventors: 汪正科
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-18
Filing date: 2008-01-18
Publication date: 2008-11-05
Anticipated expiration: 2018-01-18

Abstract

The utility model discloses a voltage-loss and phase-lacking automatic switching protection device for a low-voltage inlet and outlet wire circuit breaker switch, comprising a shell body and a control module arranged in the shell body; the control module is provided with a voltage acquisition and analysis circuit, an optocoupler, a single-chip microcomputer controlled and protective high power replay output circuit and a light-emitting tube display module which is connected with a control chip; five light-emitting tubes which are used for indicating working states and positions of devices and are connected with the display module are arranged on the shell body, the control module is connected with a high power electromagnetic relay; and external interfaces of a B-phase connector, a C-phase connector, a switch auxiliary contact and an on-off connector which are connected with the control module are further arranged on the shell body. The device can realize the automatic operation of power transmission and power cut-off.

Description

A kind of decompression, phase shortage are from the switching protective device

Technical field

The utility model relates to the Based Intelligent Control resist technology, refers in particular to a kind of decompression, phase shortage from the switching protective device.

Background technology

Existing market is used for decompression; phase shortage from switching protection cabinet seldom; but its structure kind is simple; the main change over switch of using; auxiliary relay and time relay assembly form; be not that loose contact do not throw be exactly to be in the switching state for a long time, produce vibration and burn out closing coil, serious just normally electricity consumption or produce the great electrification of using.

This device is mainly used in unattended or automatic field; solve under the existing situation decompression and hauled oneself willingly into unsteadiness; drop switch fall down or the phase shortage situation under play the effect that disconnects major loop breaker protection transformer and user power utilization equipment; have under fault or the overcurrent condition at switch simultaneously and realize self-insurance, minimizing equipment further damages.

The utility model content

The purpose of this utility model is to provide at the deficiencies in the prior art a kind of decompression of integrated independent design. phase shortage is from the switching protective device; can overcome and solve above-mentioned decompression; phase shortage makes decompression from the shortcoming that the switching structure exists, and phase shortage is more perfect from the switching protective device.

The technical scheme that the utility model provides is as follows: construct a kind of be used for low pressure into and out of the decompression of line killer switch, phase shortage from the switching protective device, comprise a housing, in described housing, be provided with a control module, control module has voltage acquisition, analysis circuit, optocoupler connects, Single-chip Controlling, protection and high-power relay output circuit, the luminous tube display module that is connected with control chip; Be provided with on housing with display module and be connected, be used in reference to 5 luminous tubes of showing device operating state and position, described control module is connected with high-power magnetic relay; On described housing, also be provided with the external tapping that following and described control module is connected: B joint, C phase joint, switch auxiliary contact and deciliter joint mutually.

The utlity model has following advantage: each contact in the device is got the B.C phase voltage respectively, phase voltage～220V, the automatic air-break switch auxiliary contact are got normally closed, closing. tapping point can be attempted by corresponding combined floodgate of switch and separating brake knob place, the bright expression switch of 1 green 1 red light is in the separating brake position, power supply is normal, detectable voltage signals; 2 bright expression switches of green light are at closing position, and power supply is normal, and automatic air-break switch is at closing position; Complete this device of bright expression of 2 green 1 red lights enters protective position, power supply is normal, circuit whether, equipment has fault, must safeguard periphery circuit or equipment, disconnects this device power supply coincidence and gets final product, this installs combined floodgate delay time adjustable (three kinds of 6-10-15S), by the toggle switch setting: 1.2 simultaneously last or be down 6S, and 2 times is 10S on 1, is 15S on 1 time 2; This device outage time-delay is 3S, and overtime is confirmed as no electric separating brake, and overlapping number of times is three times (but predetermined set), and this device can realize sending the automatic operation of electricity and outage.

Description of drawings

Fig. 1 is the circuit theory schematic diagram of the utility model device;

Fig. 2 is the connection diagram of this device with power supply unit Application Example 1;

Fig. 3 is the connection diagram of this device with power supply unit Application Example 1;

Embodiment

With reference to shown in Figure 1: provide a kind of be used for low pressure into and out of the decompression of line killer switch, phase shortage from the switching protective device, device has a transparent shell, being provided with in described housing and adopting model is the control module that AT89C2051 and 74SL14 form, control module has voltage acquisition, analysis circuit, optocoupler connects, Single-chip Controlling, protection and high-power relay output circuit, other is provided with two rectification circuits for above-mentioned two integrated packages power supply, the luminous tube display module that is connected with control chip; On housing, be provided with display module and be connected, be used in reference to 5 luminous tubes in showing device operating state and service position, control module is connected with two high-power magnetic relay CJ1, CJ2 by drive circuit, in housing, also be provided with the rectification circuit that operating voltage is provided for foregoing circuit, rectification circuit is made up of two transformers and corresponding DC transfer circuit, also is provided with the following external tapping that is connected with rectification circuit with control module: B joint, C phase joint, switch auxiliary contact and branch, splice grafting head mutually on housing.

Each contact in the device is got the B.C phase voltage respectively, phase voltage～220V, and the automatic air-break switch auxiliary contact are got normally closed, closing. tapping point can be attempted by corresponding combined floodgate of switch and separating brake knob place, the bright expression switch of 1 green 1 red light is in the separating brake position, and power supply is normal, detectable voltage signals;

2 bright expression switches of green light are at closing position, and power supply is normal, and automatic air-break switch is at closing position; Complete this device of bright expression of 2 green 1 red lights enters protective position, power supply is normal, circuit whether, equipment has fault, must safeguard periphery circuit or equipment, disconnects this device power supply coincidence and gets final product, this installs closing time adjustable (three kinds of 6-10-15S), by the toggle switch setting: 1.2 simultaneously last or be down 6S, and 2 times is 10S on 1, is 15S on 1 time 2; This device outage time-delay is 3S, and overtime is confirmed as no electric separating brake, and overlapping number of times is three times (but predetermined set), and this device can realize sending electricity and the following automatic operating process of outage:

One) send electricity operation automatically

1) the high pressure drop switch send electricity or high voltage load cabinet. and breaker cabinet and low pressure disconnecting link combined floodgate or knife switch are at closing position, and promptly three-phase A.B.C is charged,

2) A phase first or second is switched on and is sent electricity simultaneously, guarantees circuit breaker control voltage and decompression coil working voltage, and can't close a floodgate this moment, treats that device moves;

3) mutually first or second energising and send electricity simultaneously of C, device is gathered. analyze photoelectricity coupling, little Treatment Analysis. and handle, electricity is arranged when B is identical, and same the detection. handle, B.C is arbitrary not to be had electricly mutually if detect, and microprocessor waits is failure to actuate.After device confirmed that B.C is charged, device 6-15 second (adjustable) sent switching signal, and corresponding luminous indication, and closing contact is controlled voltage mutually by A and made breaker closing.

4) B energising at last and send electricity simultaneously mutually, device is gathered. analyze photoelectricity coupling, little Treatment Analysis. and handle, electricity is arranged when C is identical, and same the detection. handle, B.C is arbitrary not to be had electricly mutually if detect, and microprocessor waits is failure to actuate.After device confirmed that B.C is charged, device 6-15 second (adjustable) sent switching signal, and corresponding luminous indication, and closing contact is controlled voltage mutually by A and made breaker closing.

Two) power failure operation automatically

1) falling down or cable at A phase high pressure drop switch. disconnecting link closes undesired, cause the A phase voltage not have under (0V) or not enough rated voltage 50% (120V the is following) situation, the no-voltage release action, the switch separating brake is when device sends switching signal, because of switch control circuit adopts the A phase voltage, switch is failure to actuate, bare weight is shut down after closing three times, must treat that the people handles fault well after, but the just regular event that closes again;

2) falling down or cable at B phase high pressure drop switch. disconnecting link closes undesired, cause the B phase voltage not have under (0V) or not enough rated voltage 50% (120V the is following) situation, this device is gathered B phase no-voltage signal, microprocessor analysis is sent sub-gate signal after time-delay 3 seconds (guaranteeing thunderbolt or instantaneous loss of pressure misoperation), and corresponding luminous indication, the separating brake contact is controlled voltage mutually by A and is made breaker open operation.If it is normal that the B phase voltage is recovered, device sends switching signal automatically and controls the voltage circuit breaker that closes mutually by A at 6-15 second (adjustable);

3) falling down or cable at C phase high pressure drop switch. disconnecting link closes undesired, cause the C phase voltage not have under (0V) or not enough rated voltage 50% (120V the is following) situation, this device is gathered C phase no-voltage signal, microprocessor analysis is sent sub-gate signal after time-delay 3 seconds (guaranteeing thunderbolt or instantaneous loss of pressure misoperation), and corresponding luminous indication, the separating brake contact is controlled voltage mutually by A and made breaker open operation, and is normal if the C phase voltage is recovered, device

Automatically send switching signal and control the voltage circuit breaker that closes mutually at 6-15 second (adjustable) by A.

Fig. 2 is the circuit connection diagram of this device with power supply unit Application Example 1.

Fig. 3 is the circuit connection diagram of this device with power supply unit Application Example 1.

Claims

1, a kind of be used for low pressure into and out of the decompression of line killer switch, phase shortage from the switching protective device, comprise a housing, it is characterized in that: in described housing, be provided with a control module, control module has voltage acquisition, analysis circuit, optocoupler connects, Single-chip Controlling, protection and high-power relay output circuit, the luminous tube display driver circuit that is connected with control chip; Be provided with on housing with drive circuit and be connected, be used in reference to 5 luminous tubes of showing device operating state and position, described control module is connected with high-power magnetic relay by drive circuit; On described housing, also be provided with the external tapping that following and described control module is connected with rectification circuit: B joint, C phase joint, switch auxiliary contact and branch, splice grafting head mutually.

2, according to claim 1 be used for low pressure into and out of the decompression of line killer switch, phase shortage from the switching protective device; it is characterized in that; described control module is that AT89C2051 and the suitable electronic device of 74SL14 integrated package are electrically connected to form by model; on housing, be provided with drive circuit and be connected; be used in reference to 5 luminous tubes of showing device work and indicating device operating state; described control module is connected with two high-power magnetic relaies by drive circuit, also is provided with the rectification circuit into the foregoing circuit power supply in the housing.