CN209419194U - A kind of relay - Google Patents
A kind of relay Download PDFInfo
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- CN209419194U CN209419194U CN201920407418.2U CN201920407418U CN209419194U CN 209419194 U CN209419194 U CN 209419194U CN 201920407418 U CN201920407418 U CN 201920407418U CN 209419194 U CN209419194 U CN 209419194U
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Abstract
The utility model discloses a kind of relay.Relay includes: the first over-current detection circuit, the second over-current detection circuit, over-current detection switching circuit, delay circuit, over-current signal processing circuit, overcurrent indicating circuit and protection signal output circuit.When the first over-current detection circuit detects that overcurrent indicating circuit can issue the first overcurrent indication signal there are when over-current signal in circuit.After the delay time of delay circuit setting; if the second over-current detection circuit still is able to detect over-current signal; then issue the second overcurrent indication signal, meanwhile, protection signal output circuit will output protection action triggers signal give rear end actuation of an alarm equipment.It can be seen that, relay provided by the utility model, the case where instantaneous overcurrent and persistent overcurrent can not only be detected respectively, and can effectively evade caused by overcurrent disappears and malfunction, solve the problems, such as that there are Millisecond overcurrent or surge, and relay misoperation to be caused to be made in tested circuit.
Description
Technical field
The utility model relates to electrical equipments, more particularly to a kind of relay.
Background technique
Existing relay locks at once once detecting overcurrent signal, output alarm and contact action signal.When
There are when mS grades of overcurrent or surge in tested circuit, relay can all issue protection signal, which greatly increases
The probability that relay misoperation is made.
Utility model content
The purpose of the utility model is to provide a kind of relays, can not only detect instantaneous overcurrent respectively and continue electricity
The case where stream, and can effectively evade caused by overcurrent disappears and malfunction, solve in tested circuit that there are Milliseconds
The problem of overcurrent or surge cause relay misoperation to be made.
To achieve the above object, the utility model provides following scheme:
A kind of relay, the relay include: the first over-current detection circuit, the second over-current detection circuit, over-current detection
Switching circuit, delay circuit, over-current signal processing circuit, overcurrent indicating circuit and protection signal output circuit；Wherein,
The input terminal of first over-current detection circuit is connect with circuit under test, the output of first over-current detection circuit
End is connect with the first input end of the overcurrent indicating circuit；When first over-current detection circuit detects over-current signal,
The overcurrent indicating circuit issues the first overcurrent indication signal；
The input terminal of the delay circuit is connect with the output end of first over-current detection circuit, the delay circuit
Output end is connect with the control terminal of the over-current detection switching circuit, the input terminal of the over-current detection switching circuit and it is described to
Slowdown monitoring circuit connection, the output end of the over-current detection switching circuit are connect with the input terminal of second over-current detection circuit；Institute
It states over-current detection switching circuit and the circuit under test and second over-current detection circuit is controlled according to the control signal of control terminal
On-off；
The output end of first over-current detection circuit is connect with the first input end of the over-current signal processing circuit, institute
The output end for stating the second over-current detection circuit is connect with the second input terminal of the over-current signal processing circuit, the over-current signal
The output end of processing circuit respectively with the second input terminal of the overcurrent indicating circuit and the protection signal output circuit
Control terminal connection；When first over-current detection circuit and second over-current detection circuit detect over-current signal,
The overcurrent indicating circuit issues the second overcurrent indication signal, the protection signal output circuit output protection action triggers
Signal.
Optionally, first over-current detection circuit include: first resistor, second resistance, 3rd resistor, the 4th resistance,
First diode, the second diode, first capacitor, the second capacitor, M54123 earth leakage protective control chip, the 5th resistance, the 6th
Resistance, third capacitor, the 4th capacitor and the 5th capacitor；Wherein,
The first end of the first resistor respectively with the first output end of circuit under test, the first end of 3rd resistor, first
The first end of diode, the first end of the second diode, the first end of first capacitor and M54123 earth leakage protective control the 1 of chip
Foot connection；
The second end of the first resistor first end with the first end of the second resistance and the 5th resistance respectively
Connection, the second end of the second resistance pass through normally-closed contact in the over-current detection switching circuit and the circuit under test
Second output terminal connection, the second end of the 5th resistance respectively with the second end of the 3rd resistor and the 4th resistance
First end connection, the second end of the 4th resistance respectively with the second end of first diode, the second end of the second diode and
The first end of second capacitor connects, and the second end of the second end of the first capacitor and second capacitor is grounded；
2 feet of the M54123 earth leakage protective control chip are connect with the first end of second capacitor, M54123 electric leakage
Protection control chip 3 feet ground connection, M54123 earth leakage protective control chip 4 feet and 5 feet with the third capacitor first
End connection, the second end ground connection of the third capacitor, M54123 earth leakage protective control 6 feet of chip and the first end of the 4th capacitor
Connection, the second end ground connection of the 4th capacitor, 7 feet of the M54123 earth leakage protective control chip are first overcurrent inspection
8 feet of the output end of slowdown monitoring circuit, the M54123 earth leakage protective control chip are electric with the first end of the 6th resistance and the 5th respectively
The first end of appearance connects, the second termination 12V DC power supply of the 6th resistance, the second end ground connection of the 5th capacitor.
Optionally, the over-current detection switching circuit includes: switching relay and switching triode；Wherein,
The control terminal of the coil of the switching relay is connect with the collector of the switching triode, the switching relay
The common of device is connect with the second output terminal of the circuit under test, the normally-closed contact and described second of the switching relay
The second end of resistance connects, and the normally opened contact of the switching relay is connect with the input terminal of second over-current detection circuit,
The base stage of the switching triode is connect with the output end of the delay circuit, the emitter ground connection of the switching triode.
Optionally, the switching relay is HRS1H-S DC 5V relay.
Optionally, the over-current signal processing circuit includes and door chip, the output end of first over-current detection circuit
It is connect with the first input end with door chip, the output end of second over-current detection circuit and the with door chip
The connection of two input terminals, the output end with door chip are the output end of the over-current signal processing circuit.
Optionally, described and door chip is 74LS08 chip.
Optionally, the overcurrent indicating circuit includes: that the double-colored co-anode diode of reddish yellow, yellow instruction resistance, red refer to
Show resistance, instruction triode, instruction resistance and single-phase silicon-controlled chip；Wherein,
The first end of the instruction resistance is connect with the output end of first over-current detection circuit, the instruction resistance
Second end is connect with the base stage of the instruction triode, the emitter ground connection of the instruction triode, the instruction triode
Collector indicates that resistance is connect with the cathode of the reddish yellow double-colored co-anode diode yellow side by yellow, and the reddish yellow is double-colored
The common-anode of co-anode diode is connect with instruction DC power supply；
The cathode of the double-colored co-anode diode red-side of reddish yellow is connect with one end of red instruction resistance, red instruction
The other end of resistance is connect with the input terminal of the single-phase silicon-controlled chip, the output end ground connection of the single-phase silicon-controlled chip,
The control terminal of the single-phase silicon-controlled chip is connect with the output end of the over-current signal processing circuit.
Optionally, the protection signal output circuit includes relay.
According to specific embodiment provided by the utility model, the utility model discloses following technical effects:
Relay provided by the utility model includes: the first over-current detection circuit, the second over-current detection circuit, over-current detection
Switching circuit, delay circuit, over-current signal processing circuit, overcurrent indicating circuit and protection signal output circuit.When first
Over-current detection circuit detects that overcurrent indicating circuit can issue the first overcurrent indication signal there are when over-current signal in circuit.Through
After crossing the delay time of delay circuit setting, if the second over-current detection circuit still is able to detect over-current signal, the is issued
Two overcurrent indication signals, meanwhile, protection signal output circuit will output protection action triggers signal alarm to rear end it is dynamic
Make equipment.As it can be seen that relay provided by the utility model, can not only detect the feelings of instantaneous overcurrent and persistent overcurrent respectively
Condition, and can effectively evade caused by overcurrent disappears and malfunction, solve in tested circuit that there are Millisecond overcurrent
Or surge the problem of causing relay misoperation to be made.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural block diagram of relay provided by the embodiment of the utility model；
Fig. 2 is the circuit diagram of the first over-current detection circuit provided by the embodiment of the utility model；
Fig. 3 is the circuit diagram of the second over-current detection circuit provided by the embodiment of the utility model；
Fig. 4 is the circuit diagram of over-current detection switching circuit provided by the embodiment of the utility model；
Fig. 5 is the circuit diagram of over-current signal processing circuit provided by the embodiment of the utility model；
Fig. 6 is overcurrent indicating circuit provided by the embodiment of the utility model, protection signal output circuit and resets electric
The circuit diagram on road；
Fig. 7 is that the overcurrent action current value of the first over-current detection circuit provided by the embodiment of the utility model adjusts circuit；
Fig. 8 is that the overcurrent action current value of the second over-current detection circuit provided by the embodiment of the utility model adjusts circuit；
Fig. 9 is relay contact analog control system provided by the embodiment of the utility model/reset key circuit；
Figure 10 is a kind of mechanical outline figure of relay provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of relays, can not only detect instantaneous overcurrent respectively and continue electricity
The case where stream, and can effectively evade caused by overcurrent disappears and malfunction, solve in tested circuit that there are Milliseconds
The problem of overcurrent or surge cause relay misoperation to be made.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Fig. 1 is a kind of structural block diagram of relay provided by the embodiment of the utility model.As shown in Figure 1, a kind of relay,
The relay includes: the first over-current detection circuit 1, the second over-current detection circuit 2, over-current detection switching circuit 3, delay circuit
4, over-current signal processing circuit 5, overcurrent indicating circuit 6 and protection signal output circuit 7.
The input terminal of first over-current detection circuit 1 is connect with circuit under test, first over-current detection circuit 1 it is defeated
Outlet is connect with the first input end of the overcurrent indicating circuit 6；When first over-current detection circuit 1 detects over-current signal
When, the overcurrent indicating circuit 6 issues the first overcurrent indication signal.
The input terminal of the delay circuit 4 is connect with the output end of first over-current detection circuit 1, the delay circuit
4 output end is connect with the control terminal of the over-current detection switching circuit 3, the input terminal of the over-current detection switching circuit 3 with
The circuit under test connection, the input terminal of the output end of the over-current detection switching circuit 3 and second over-current detection circuit 2
Connection；The over-current detection switching circuit 3 controls the circuit under test and second overcurrent according to the control signal of control terminal
The on-off of detection circuit 2.
The output end of first over-current detection circuit 1 is connect with the first input end of the over-current signal processing circuit 5,
The output end of second over-current detection circuit 2 is connect with the second input terminal of the over-current signal processing circuit 5, the overcurrent
The output end of signal processing circuit 5 is defeated with the second input terminal of the overcurrent indicating circuit 6 and the protection signal respectively
The control terminal connection of circuit 7 out；When first over-current detection circuit 1 and second over-current detection circuit 2 detected
When flowing signal, the overcurrent indicating circuit 6 issues the second overcurrent indication signal, and the protection signal output circuit 7 exports
Protection act trigger signal.
Fig. 2 is the circuit diagram of the first over-current detection circuit provided by the embodiment of the utility model.As shown in Fig. 2, described
One over-current detection circuit 1 includes: first resistor R18-1, second resistance R19-1,3rd resistor R3-1, the 4th resistance R4-1,
One diode D1-1, the second diode D2-1, first capacitor C1-1, second capacitor C6-1, M54123 earth leakage protective control chip,
5th resistance R20-1, the 6th resistance R8-1, third capacitor C2-1, the 4th capacitor C3-1 and the 5th capacitor C5-1.
The first end of the first resistor R18-1 respectively with the first output end of circuit under test, 3rd resistor R3-1
One end, the first end of first diode D1-1, the first end of the second diode D2-1, the first end of first capacitor C1-1 and
M54123 earth leakage protective controls the 1 foot connection of chip；
The second end of the first resistor R18-1 respectively with the first end of the second resistance R19-1 and it is described 5th electricity
The first end connection of R20-1 is hindered, the second end of the second resistance R19-1 passes through normal in the over-current detection switching circuit 3
Closed contact is connect with the second output terminal of the circuit under test, the second end of the 5th resistance R20-1 respectively with the third
The second end of resistance R3-1 is connected with the first end of the 4th resistance R4-1, the second end of the 4th resistance R4-1 respectively with
The second end of first diode D1-1, the second end of the second diode D2-1 are connected with the first end of the second capacitor C6-1,
The second end of the first capacitor C1-1 and the second end of the second capacitor C6-1 are grounded.
2 feet of the M54123 earth leakage protective control chip are connect with the first end of the second capacitor C6-1, M54123
Earth leakage protective control chip 3 feet ground connection, M54123 earth leakage protective control chip 4 feet and 5 feet with the third capacitor C2-
1 first end connection, the second end ground connection of the third capacitor C2-1, M54123 earth leakage protective control 6 feet and the 4th of chip
The first end of capacitor C3-1 connects, and the second end ground connection of the 4th capacitor C3-1, the M54123 earth leakage protective controls chip
7 feet be first over-current detection circuit 1 output end, 8 feet of M54123 earth leakage protective control chip are respectively with the
The first end of six resistance R8-1 is connected with the first end of the 5th capacitor C5-1, the second termination 12V DC electricity of the 6th resistance R8-1
Source, the second end ground connection of the 5th capacitor C5-1.In practical application, JP8 and zero sequence current mutual inductor secondary winding in Fig. 2 connect
It connects.
Fig. 3 is the circuit diagram of the second over-current detection circuit provided by the embodiment of the utility model.As shown in figure 3, this implementation
The circuit structure of second over-current detection circuit 2 and the circuit structure and working principle class of the first over-current detection circuit 1 described in example
Seemingly, details are not described herein.
Fig. 4 is the circuit diagram of over-current detection switching circuit provided by the embodiment of the utility model.As shown in figure 4, the mistake
Stream detection switching circuit 3 includes: switching relay and switching triode Q3.The control terminal of the coil of the switching relay and institute
State the collector connection of switching triode Q3, the common of the switching relay and the second output terminal of the circuit under test
The normally-closed contact of connection, the switching relay is connect with the second end of the second resistance R19-1, the switching relay
Normally opened contact is connect with the input terminal of second over-current detection circuit 2, the base stage and the delay of the switching triode Q3
The output end of circuit 4 connects, the emitter ground connection of the switching triode Q3.In the present embodiment, the switching relay is
HRS1H-S DC 5V relay.
Fig. 5 is the circuit diagram of over-current signal processing circuit provided by the embodiment of the utility model.As shown in figure 5, the mistake
Stream signal processing circuit 5 includes and door chip the output end of first over-current detection circuit 1 and first with door chip
Input terminal connection, the output end of second over-current detection circuit 2 connect with described with the second input terminal of door chip, it is described and
The output end of door chip is the output end of the over-current signal processing circuit 5.In the present embodiment, described and door chip is 74LS08
Chip.
Fig. 6 is overcurrent indicating circuit provided by the embodiment of the utility model, protection signal output circuit and resets electric
The circuit diagram on road.As shown in fig. 6, the overcurrent indicating circuit 6 includes: the double-colored co-anode diode LED1 of reddish yellow, yellow instruction
Resistance R15, red instruction resistance R6, instruction triode Q2, instruction resistance R2 and single-phase silicon-controlled chip Q1；Wherein,
The first end of the instruction resistance R2 is connect with the output end of first over-current detection circuit 1, the instruction electricity
The second end for hindering R2 is connect with the base stage of the instruction triode Q2, the emitter ground connection of the instruction triode Q2, the finger
Show that the collector of triode Q2 indicates the cathode Y of resistance R15 and the reddish yellow double-colored co-anode diode yellow side by yellow
The common-anode of connection, the double-colored co-anode diode of reddish yellow is connect with instruction DC power supply.The double-colored common-anode two of reddish yellow
The cathode R of pole pipe red-side is connect with one end of the R6 of red instruction resistance, the other end and the list of red instruction resistance R6
The input terminal of phase controlled silicon chip Q1 connects, the output end ground connection of the single-phase silicon-controlled chip Q1, the single-phase silicon-controlled core
The control terminal of piece Q1 is connect with the output end of the over-current signal processing circuit 5.In the present embodiment, instruction DC power supply is 25V
DC power supply.
As shown in fig. 6, the protection signal output circuit 7 in the present embodiment includes relay JD1, model G2R-2.
When 9 foot that the first over-current detection circuit 1 has lock out action signal to be transported to 74LS08, after waiting delay second
10 feet whether over-current detection circuit 2 has lock out action signal to be transported to 74LS08, if so, then being patrolled according to the operation with door
Volume, the 8 feet output high level of 74LS08 controls single-phase silicon-controlled chip Q1 and drives the G2R-2 actuating of relay, and normally opened contact is closed,
Normally-closed contact disconnects, and exports alarm signal.If it is not, not exporting high level, G2R-2 according to 8 foot of arithmetic logic with door
Relay is failure to actuate, normally opened contact, and normally-closed contact state is not overturn, no output alarm signal.
In the present embodiment, relay further includes the mono- fire-wire power circuit of 5V.Wherein, the mono- fire-wire power circuit of 5V includes rectification
Bridge module DP2W100 and power module PI-05V-B4,2 feet and 4 feet of rectifier bridge module are connected with power transformer output end, and 1
Foot is connected with PI-05V-B4 input terminal IN.The 14 of 5 feet and 74LS08 chip of PI-05V-B4 output end OUT and switching relay
Foot is connected, and effect is to switching relay and 74LS08 and door offer+5V voltage.
Fig. 7 is that the overcurrent action current value of the first over-current detection circuit provided by the embodiment of the utility model adjusts circuit.
Fig. 8 is that the overcurrent action current value of the second over-current detection circuit provided by the embodiment of the utility model adjusts circuit.Using Fig. 7 institute
The overcurrent action current value shown, which adjusts circuit, can adjust the overcurrent standard value of the first overcurrent sensing circuit, using Fig. 8 institute
The overcurrent action current value shown, which adjusts circuit, can adjust the overcurrent standard value of the second overcurrent sensing circuit.
Fig. 9 is relay contact analog control system provided by the embodiment of the utility model/reset key circuit.The present embodiment be additionally provided with after
Electric test key CS and reset key FW.In conjunction with Fig. 5 and Fig. 6 it is found that pressing reset key FW, reset relay FWJD coil is logical
Electricity, electromagnetic actuation make system power supply power supply module instantaneous short circuit, reset relay electric logic.
Figure 10 is a kind of mechanical outline figure of relay provided by the embodiment of the utility model.As Figure 10 (a) partially and
(b) shown in part, the mechanical structure of relay provided in this embodiment includes shell 61, mainboard 62, connecting terminal 63, nameplate
64, end cap 65；Translucent cover 66 and control panel 67.Mainboard 62 is located inside shell 61, and connect with control panel 67, and control panel 67
It connect in 61 inside of shell and with connecting terminal 663, end cap 65 is located at 61 top of shell, with connecting terminal 63 and control panel 667
Connection.Nameplate 64 is located on end cap 65, and translucent cover 66 is located on end cap 65.First over-current detection circuit 1, the second over-current detection electricity
Road 2, over-current detection switching circuit 3, delay circuit 4, over-current signal processing circuit 5, overcurrent indicating circuit 6 and protection signal
The built-up circuit of the relays such as output circuit 7 is respectively positioned on control panel 67.
In practical application, it is assumed that circuit-under-test does not allow relay there are 0.6 second starting current (moment surge current)
Output red alarm signal and protection signal.Then by R9~R12 in delay circuit, one of them is arranged to the 1 second corresponding institute that is delayed
The resistance value needed, and the gear of actuation time is pushed into corresponding 1 second shelves.When starting current comes, amber light is lighted, and delay 1 second red
Lamp does not work, and explanation is normal starting current；If delay 1 second after red light light, protection signal output relay will after
Continuous alarm is connected with protection equipment control loop, issues alarm and trip condition, illustrates that the long overcurrent greater than 1 second exists sometimes
Abnormal conditions.
Relay provided by the utility model locks existing relay at once once detecting overcurrent signal, defeated
The technical solution of alarm and contact action signal is optimized for the alarm mechanism of two intensity grades out, when of short duration light overcurrent occurs
Yellow alarm lamp is bright, and contact is failure to actuate.When lasting heavy overcurrent occurs, red alarm lamp is bright and output contact action signal, at
Function solves the problems, such as that there are ms grades of overcurrent or surge, and relay misoperation to be caused to be made in tested circuit.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the method and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.In conclusion
The content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. a kind of relay, which is characterized in that the relay include: the first over-current detection circuit, the second over-current detection circuit,
Over-current detection switching circuit, delay circuit, over-current signal processing circuit, overcurrent indicating circuit and protection signal output electricity
Road；Wherein,
The input terminal of first over-current detection circuit is connect with circuit under test, the output end of first over-current detection circuit with
The first input end of the overcurrent indicating circuit connects；It is described when first over-current detection circuit detects over-current signal
Overcurrent indicating circuit issues the first overcurrent indication signal；
The input terminal of the delay circuit is connect with the output end of first over-current detection circuit, the output of the delay circuit
End is connect with the control terminal of the over-current detection switching circuit, the input terminal of the over-current detection switching circuit and the electricity to be measured
Road connection, the output end of the over-current detection switching circuit are connect with the input terminal of second over-current detection circuit；The mistake
Stream detection switching circuit controls leading to for the circuit under test and second over-current detection circuit according to the control signal of control terminal
It is disconnected；
The output end of first over-current detection circuit is connect with the first input end of the over-current signal processing circuit, and described
The output end of two over-current detection circuits is connect with the second input terminal of the over-current signal processing circuit, the over-current signal processing
The control with the second input terminal of the overcurrent indicating circuit and the protection signal output circuit respectively of the output end of circuit
End connection processed；It is described when first over-current detection circuit and second over-current detection circuit detect over-current signal
Overcurrent indicating circuit issues the second overcurrent indication signal, the protection signal output circuit output protection action triggers letter
Number.
2. a kind of relay according to claim 1, which is characterized in that first over-current detection circuit includes: first
Resistance, second resistance, 3rd resistor, the 4th resistance, first diode, the second diode, first capacitor, the second capacitor,
M54123 earth leakage protective controls chip, the 5th resistance, the 6th resistance, third capacitor, the 4th capacitor and the 5th capacitor；Wherein,
The first end of the first resistor respectively with the first output end of circuit under test, the first end of 3rd resistor, the one or two pole
The 1 foot company of the first end of pipe, the first end of the second diode, the first end of first capacitor and M54123 earth leakage protective control chip
It connects；
The second end of the first resistor is connect with the first end of the first end of the second resistance and the 5th resistance respectively,
The second end of the second resistance passes through second of normally-closed contact and the circuit under test in the over-current detection switching circuit
Output end connection, the second end of the 5th resistance respectively with the second end of the 3rd resistor and the 4th resistance first
End connection, the second end of the 4th resistance respectively with the second end of first diode, the second end of the second diode and described
The first end of second capacitor connects, and the second end of the second end of the first capacitor and second capacitor is grounded；
2 feet of the M54123 earth leakage protective control chip are connect with the first end of second capacitor, M54123 earth leakage protective
The 3 feet ground connection of chip is controlled, M54123 earth leakage protective controls 4 feet of chip and 5 feet connect with the first end of the third capacitor
It connects, the first end of the second end ground connection of the third capacitor, 6 feet and the 4th capacitor that M54123 earth leakage protective controls chip connects
It connects, 7 feet of the second end ground connection of the 4th capacitor, the M54123 earth leakage protective control chip are first over-current detection
The output end of circuit, 8 feet of M54123 earth leakage protective control chip respectively with the first end and the 5th capacitor of the 6th resistance
First end connection, the 6th resistance second termination 12V DC power supply, the 5th capacitor second end ground connection.
3. a kind of relay according to claim 2, which is characterized in that the over-current detection switching circuit includes: switching
Relay and switching triode；Wherein,
The control terminal of the coil of the switching relay is connect with the collector of the switching triode, the switching relay
Common is connect with the second output terminal of the circuit under test, the normally-closed contact of the switching relay and the second resistance
Second end connection, it is described switching relay normally opened contact connect with the input terminal of second over-current detection circuit, it is described
The base stage of switching triode is connect with the output end of the delay circuit, the emitter ground connection of the switching triode.
4. a kind of relay according to claim 3, which is characterized in that the switching relay be HRS1H-S DC5V after
Electric appliance.
5. a kind of relay according to claim 1, which is characterized in that the over-current signal processing circuit includes and Men Xin
Piece, the output end of first over-current detection circuit are connect with the first input end with door chip, the second overcurrent inspection
The output end of slowdown monitoring circuit is connect with described with the second input terminal of door chip, and the output end with door chip is overcurrent letter
The output end of number processing circuit.
6. a kind of relay according to claim 5, which is characterized in that described and door chip is 74LS08 chip.
7. a kind of relay according to claim 1, which is characterized in that the overcurrent indicating circuit includes: that reddish yellow is double-colored
Co-anode diode, yellow instruction resistance, red instruction resistance, instruction triode, instruction resistance and single-phase silicon-controlled chip；Its
In,
The first end of the instruction resistance is connect with the output end of first over-current detection circuit, and the second of the instruction resistance
It holds and is connect with the base stage of the instruction triode, the emitter ground connection of the instruction triode, the current collection of the instruction triode
Pole indicates that resistance is connect with the cathode of the reddish yellow double-colored co-anode diode yellow side by yellow, the double-colored common anode of reddish yellow
The common-anode of pole diode is connect with instruction DC power supply；
The cathode of the double-colored co-anode diode red-side of reddish yellow is connect with one end of red instruction resistance, red instruction resistance
The other end connect with the input terminal of the single-phase silicon-controlled chip, the output end of single-phase silicon-controlled chip ground connection is described
The control terminal of single-phase silicon-controlled chip is connect with the output end of the over-current signal processing circuit.
8. a kind of relay according to claim 1, which is characterized in that the protection signal output circuit include after
Electric appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920407418.2U CN209419194U (en) | 2019-03-28 | 2019-03-28 | A kind of relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920407418.2U CN209419194U (en) | 2019-03-28 | 2019-03-28 | A kind of relay |
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|---|---|
| CN209419194U true CN209419194U (en) | 2019-09-20 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920407418.2U Expired - Fee Related CN209419194U (en) | 2019-03-28 | 2019-03-28 | A kind of relay |
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| CN (1) | CN209419194U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491012A (en) * | 2021-02-03 | 2021-03-12 | 四川蕊源集成电路科技有限公司 | Current-limiting double-protection circuit and current-limiting double-protection method of circuit |
| CN112782570A (en) * | 2019-11-06 | 2021-05-11 | 株洲中车时代电气股份有限公司 | System and method for monitoring relay |
-
2019
- 2019-03-28 CN CN201920407418.2U patent/CN209419194U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782570A (en) * | 2019-11-06 | 2021-05-11 | 株洲中车时代电气股份有限公司 | System and method for monitoring relay |
| CN112491012A (en) * | 2021-02-03 | 2021-03-12 | 四川蕊源集成电路科技有限公司 | Current-limiting double-protection circuit and current-limiting double-protection method of circuit |
| CN112491012B (en) * | 2021-02-03 | 2021-04-16 | 四川蕊源集成电路科技有限公司 | Current-limiting double-protection circuit and current-limiting double-protection method of circuit |
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