CN208272608U - Overcurrent protection relay circuit and overcurrent protection relay - Google Patents
Overcurrent protection relay circuit and overcurrent protection relay Download PDFInfo
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- CN208272608U CN208272608U CN201820926470.4U CN201820926470U CN208272608U CN 208272608 U CN208272608 U CN 208272608U CN 201820926470 U CN201820926470 U CN 201820926470U CN 208272608 U CN208272608 U CN 208272608U
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Abstract
The utility model discloses a kind of overcurrent protection relay circuit and overcurrent protection relays; the current foldback circuit includes relay, governor circuit, transistor switching circuit and current sampling circuit, and the coil of the relay is series between entire circuit power electrode input end and the power end of the transistor switching circuit；The signal output end of the governor circuit is connected to the control terminal of the transistor switching circuit, the output end of the current sampling circuit is connected to the signal input part of the governor circuit, two contacts of the relay are separately connected positive and negative anodes output end of the conducting wire as entire circuit, and the signal input part of the current sampling circuit is electrically connected to the output end of the relay.The hybrid combination that the circuit structure uses discrete device and electromagnetic relay to combine for the discrete device structure of solid-state relay there is leakage current, load current value to monitor on-line.
Description
Technical field
The utility model first relates to a kind of circuit, more particularly, to a kind of circuit for overcurrent protection relay.
Secondly, the utility model further relates to one kind with overcurrent protection relay.
Background technique
Overcurrent protection relay is the device that the protection to element is realized by overcurrent protection movement.The device stresses
It can be using general overview as the inverse-time overcurrent protection of phase element and earth element, short delay protection, wink electric current in its defencive function
Overcurrent protection, overload alarm, region interlocking, itself perfect self-checking function, it is ensured that relay is primary when mutual inductor ratio
Equipment provides reliable protection.
Existing over-current protection relay is mainly by electric current relay, the time relay and signal relay composition, electricity
Current transformer and electric current relay form measuring cell, for judging whether be above standard by line current, the time relay
For delay cell, it guarantees that device action is selective with delay appropriate, and signal relay is used to issue protection act letter
Number.When normal operation, the contact of electric current relay and the time relay is all to disconnect, when excessive by protection zone failure or electric current
When, electric current relay movement starts the time relay by its contact, and after scheduled delay, time relay contact is closed
It closes, circuit breaker trip coil is connected, circuit breaker trip, faulty line is removed.Therefore overcurrent protection relay is electric system
Common overcurrent protective electronic device in relay protection and automatic electrical power trans mission/distribution system, for cutting off failure, issuing trip command
And terminate event.
Current overcurrent protection relay since its internal control circuit is mainly made of discrete device, cause its have compared with
Big leakage current.
Utility model content
The utility model is in this to be designed to provide one in order to solve the problems of existing overcurrent protection relay
Kind is combined the overcurrent protection relay circuit for constituting hybrid combination by discrete device and relay.
In addition, the application second in this is designed to provide a kind of mistake being made of circuit provided herein
Flow protective relay.
In order to realize the purpose of this utility model, provided overcurrent protection relay circuit includes relay, master control electricity
Road, transistor switching circuit and current sampling circuit, the coil of the relay are series at entire circuit power anode input
Between end and the power end of the transistor switching circuit；The signal output end of the governor circuit is connected to the transistor and opens
The control terminal on powered-down road, the output end of the current sampling circuit are connected to the signal input part of the governor circuit, it is described after
Two contacts of electric appliance are separately connected positive and negative anodes output end of the conducting wire as entire circuit, and the signal of the current sampling circuit is defeated
Enter the output end that end is electrically connected to the relay.
Circuit provided herein uses relay and discrete device hybrid circuit structure, overcomes because of solid relay
Device exports the shortcomings that there are leakage currents.In addition, circuit provided herein combines current sampling circuit and governor circuit etc.
Functional circuit enters the program in governor circuit in conjunction with programming, I can be realized2T inverse-time overcurrent protection characteristic.
Further, overcurrent protection relay circuit provided herein further includes filter circuit of pressure-stabilizing, circuit power
Operating voltage is provided after the filter circuit of pressure-stabilizing for the governor circuit and the current sampling circuit.Pass through voltage regulation filtering
Circuit effectively inhibits the surge current in access power supply, keeps the power supply for accessing circuit steady, reduces the fluctuation electricity in power supply
Stream is to interference caused by circuit.
Further, data receiver and data sending terminal are reserved on the governor circuit.It is connect by reserved data
Receiving end and data sending terminal, then cooperate the communication connection of RS323 data line and host computer, realize I2T inverse time lag programmability,
Load current value on-line monitoring.
Further, the current sampling circuit includes Hall sensor integrated circuit.Electricity is constituted using Hall sensor
Sample circuit is flowed, so that overcurrent protection relay circuit provided herein is measured the electric current and voltage of random waveform, makes
Circuit has good electrical isolation, and precision is high and measurement range is wide.
Further, the governor circuit is configured to according to I2T curve exports control instruction.I has been better achieved2T inverse time
Limit overcurrent protection.
Overcurrent protection relay provided by second purpose of the utility model has following two structure:
The first, which includes relay, control circuit board A, control circuit board B, cavity seal casinghousing and inserts
Foot group, the relay, the control circuit board A and the control circuit board B are installed in the cavity seal casinghousing, described
Pin group is installed on the bottom plate of the cavity seal casinghousing；It is laid on the control circuit board A and the control circuit board B
Any one overcurrent protection relay circuit provided by the utility model；The pin group includes cathode power supply pin A, anode
Power pin B, negative power supply pin, anode output pin and cathode export pin, the cathode power supply pin A, the anode
Power pin B and the negative power supply pin are connected to the power input of the overcurrent protection relay circuit, the anode
Output pin and cathode output pin are connect with the positive and negative anodes output end of the overcurrent protection relay circuit respectively.
The structure is installed on what discrete device and relay combined in cavity seal casinghousing, formed discrete device and after
Electric appliance independence hybrid combination, the relay compared to solid-state relay individually by discrete device structure for, with no electric leakage
Stream, ensured relay using safe.
Second, which includes relay, control circuit board A, control circuit board B, cavity seal casinghousing and inserts
Foot group, the relay, the control circuit board A and the control circuit board B are installed in the cavity seal casinghousing, described
Pin group is installed on the bottom plate of the cavity seal casinghousing；It is laid on the control circuit board A and the control circuit board B
Overcurrent protection relay circuit with data sending terminal and data receiver provided herein；The pin group includes just
Pole power pin A, data send pin, data receiver pin, cathode power supply pin B, negative power supply pin, anode output pin
Pin is exported with cathode, the cathode power supply pin A, the cathode power supply pin B and the negative power supply pin are connected to institute
State the power input of overcurrent protection relay circuit, the anode output pin and cathode output pin respectively with the overcurrent
The positive and negative anodes output end of protective relay circuit connects；The data send pin and the data receiver pin and the master control
The data receiver reserved on circuit is connected with data sending terminal.
The structure is installed on what discrete device and relay combined in cavity seal casinghousing, formed discrete device and after
Electric appliance independence hybrid combination, the relay compared to solid-state relay individually by discrete device structure for, with no electric leakage
Stream, ensured relay using safe.In addition, the structure is additionally provided with data receiver pin and data send pin, cooperation
The communication connection between overcurrent protection relay and host computer can be realized using RS232 data line, realize I2The t inverse time lag can compile
Journey and load current value on-line monitoring, are also able to achieve fault alarm in conjunction with host computer.
Further, it is laid between pin group and the bottom plate described in the overcurrent protection relay of both the above structure
Glass insulator.
Further, the overcurrent protection relay of both the above structure further includes being installed on cavity seal casinghousing two sides
Mounting rack.Overcurrent protection relay is installed with can be convenient by mounting rack.
The beneficial effects of the utility model are: the circuit structure of the utility model uses discrete device and electromagnetic relay phase
In conjunction with hybrid combination for the discrete device structure of solid-state relay there is leakage current, I2t characteristic can compile
It is the advantages that journey, load current value on-line monitoring, fault alarm output, (22mm × 13mm × 23mm) small in size, it is light-weight
(50g).By data sending terminal/pin and data receiver/pin, the data sharing of product and host computer can be realized.
Detailed description of the invention
Fig. 1 is the schematic diagram of overcurrent protection relay electric current provided by the utility model；
Fig. 2 is the circuit diagram of overcurrent protection relay electric current provided by the utility model；
Fig. 3 is the outside drawing of overcurrent protection relay provided by the utility model；
Fig. 4 is the cross-sectional view of overcurrent protection relay provided by the utility model；
In figure: 1- contactor, 2- control circuit board A, 3- control circuit board B, 4- cavity seal casinghousing, 5- bottom plate, 6- glass
Glass insulator, 7- pin group, 8- mounting rack, the organic heat conductive silica gel of 9-, 10- cathode power supply pin A, 11- data send pin,
12- data receiver pin, 13- cathode power supply pin B, 14- negative power supply input pin, 15- anode export pin OUT+, 16-
Cathode exports pin OUT-.
Specific embodiment
The drawings and specific embodiments are combined to make the application technical solution claimed herein further details of
Explanation.
The application is herein there are two technical solutions claimed, and one is circuit for overcurrent protection relay,
The other is having I2The overcurrent protection relay of t anti-time limit characteristic, wherein the functional block diagram of overcurrent protection relay circuit and
Circuit diagram difference is as depicted in figs. 1 and 2；The structure difference of overcurrent protection relay is as shown in Figure 3 and Figure 4.
As illustrated in fig. 1 and 2, overcurrent protection relay circuit include for make load power on or be segmented power supply after
Electric appliance J1, the transistor switching circuit of output is cut off, for the master control electricity of data processing for disconnecting the contact relay JI
Road and the current sampling circuit that electric current is exported for acquiring relay；The coil of relay J1 is series at the anode electricity of entire circuit
Between source input terminal and the power end of transistor switching circuit, the letter of the signal input part connection current sampling circuit of governor circuit
Number output end realizes in the collected electric current input governor circuit of current collection circuit institute that the signal output end of governor circuit connects
It is connected to the control terminal of transistor switching circuit, it is defeated as the positive and negative anodes of entire circuit that two contacts of relay are separately connected conducting wire
The signal input part of outlet, current sampling circuit is electrically connected to the output end of relay, for acquiring the output electric current of relay.
Wherein each functional circuit can be provided specifically herein using existing any circuit, the application in the above circuit
Functional circuit it is for reference, but not indicate the application documented by functional circuit be only capable of by reference circuit provided herein reality
It is existing.It is described in detail herein in conjunction with attached drawing 4, the specific structure of each function recorded in the application is as follows:
Governor circuit includes STC15W204S/SOP8 single-chip microcontroller IC1, capacitor C5, resistance R3~resistance R5 and diode D2.
Transistor switching circuit is made of triode Q1.
Current sampling circuit includes ACS712ELCTR-30A-T Hall sensor IC2, capacitor C2, capacitor C3 and resistance R2
Composition.
The 1 foot meridian capacitor C5 of single-chip microcontroller IC1 is grounded, and 1 foot connects operating voltage, and 3 feet meet Hall sensor IC2 by resistance R2
7 feet, 3 feet of single-chip microcontroller IC1 also pass through capacitor C3 and are grounded, and the 4 feet ground connection of single-chip microcontroller IC1,8 feet of single-chip microcontroller IC1 successively lead to
Resistance R3 and capacitor C5 ground connection is crossed, 7 feet of single-chip microcontroller IC1 connect the anode of diode D2, and the cathode of diode D2 passes through resistance R4
It is connected to the base stage (control terminal) of triode Q1, while the base stage of triode Q1 also passes through resistance R5 and is grounded.
6 feet of Hall sensor IC2 are grounded by capacitor C2, and 1 foot of Hall sensor IC2 and 2 feet are shorted and are used as electric current
The signal input part of sampling is connected to a contact in two contacts relay J1；3 feet and 4 feet of Hall sensor IC2 are short
Two contacts of another contact for connecing and being connected in two contacts relay J1, relay J1 are also connected with conducting wire as whole
The positive and negative anodes output end of a circuit.
The collector of triode Q1 is connected to the cathode power supply input terminal of circuit, triode Q1 by the coil of relay J1
Emitter ground connection.In addition, the coil of relay J1 is damaged in order to avoid disconnecting high electromotive force caused by load,
The application connects circuit anode power input in the both ends of a relay J1 coil sustained diode 1 in parallel, the cathode of diode D1
End, anode connects the other end, is formed into a loop with relay J1, the high electromotive force for generating the coil both ends of relay J1 circuit with
Continuous current system consumption, so that the coil for playing the role of protective relay J1 is not impaired.
The course of work of the above overcurrent protection relay circuit is: programmer writes program, and programming is into list after the completion of debugging
In piece machine IC1, programming into program a data processing can be carried out to the collected electric current of institute using any method, compile herein
The concrete function for the program write is: using Discrete control, electric current does not execute overcurrent protection movement when being lower than 15A, electric current is greater than 30A
When cut off output immediately, overcurrent protection when electric current is between 15A and 30A movement follows I2t characteristic curve, when overcurrent protection
Between processing using control mode, software configuration is interrupted be parallel polling formula structure, training in rotation beat realized by Timer2 timer,
1ms is a beat, i.e., every 1ms enters a Timer2 interrupt service routine and updates overcurrent break time, Timer2 timer
For 16 automatic refitting modes.Timer2 timer interrupt service program task is whether detection load current falls in 15A to 30A
The overcurrent break time calculated is converted into counting setting value if meeting condition by section, therefore overcurrent break time can be with
It is updated once with the every 1ms of load current value, while the every interruption of Timer2 timer is primary, counter will accumulate once, and work as meter
When the value of number devices is greater than overcurrent break time corresponding counting setting value, block system relay output locks malfunction, and reset
Count opening flag and Counter Value.Procedure above is just in overcurrent protection relay circuit provided herein
One kind can also be write by programmer according to the actual situation.
After the completion of program burn writing, when input terminal IN does not apply excitation, entire product does not work, and relay J1 is failure to actuate,
The output OUT+ and OUT- of overcurrent protection relay circuit open a way, i.e., no current exports；When input terminal, which applies, to motivate, relay
J1 movement, output OUT+ and the OUT- closure of overcurrent protection relay circuit, Hall sensor IC2 sample load current variation simultaneously
The form of voltage signal output is sent to single-chip microcontroller IC1 and carries out data operation processing.When load current is run lower than 15A, no
Overcurrent protection movement is executed, output OUT+ and OUT- is kept closed；The block system relay immediately when load current is more than 30A
Output, OUT+ and OUT- open circuit, load disconnect；When load current is in the section 15A~30A, single-chip microcontroller IC1 is to load current
An overcurrent protection time is calculated and updates every 1ms by I2t characteristic curve, once IC1 internal counter adds up to corresponding to
Guard time is flowed, outputting cutting severed finger will be enabled immediately to protect load.
In order to reduce the interference loaded in the excitation on overcurrent protection relay circuit, the application is in the above overcurrent protection
Increase by a filter circuit of pressure-stabilizing on relay circuit, which is mainly used for filtering out the interference in excitation, keeps excitation flat
It is sliding to stablize.The filter circuit of pressure-stabilizing can use existing any one, provide a kind of reference circuit structure herein comprising anti-
Polarity protection diode D3 and transient voltage suppressor diode TVS1, resistance R1, resistance R6, resistance R7, capacitor C1, capacitor C4 and
Zener diode Z1 composition；Transient voltage suppressor diode TVS1 is series at circuit anode power input and negative power supply input
Between end, the cathode of reverse polarity protection's diode D3 is connected to the negative power supply input terminal of circuit, anode and zener diode Z1
Anode connection, one end of resistance R1, resistance R6 and resistance R7 are connected to the cathode power supply input terminal of circuit, the other end and pressure stabilizing two
Pole pipe Z1 cathode is connected to the output of filter circuit of pressure-stabilizing, and capacitor C4 and capacitor C1 are parallel to the yin of zener diode Z1 respectively
Between pole and ground.
In order to realize that load current value is monitored on-line, in single-chip microcontroller on the basis of the above overcurrent protection relay circuit
The upper reserved data receiving end IC1 and data sending terminal, herein using the 5th foot of single-chip microcontroller IC1 and the 6th foot as data sending terminal
TXD and data receiver RXD.The data sending terminal TXD and data receiver RXD reserved using RS232 data connection can be real
The communication of existing circuit and host computer, the collected current data of overcurrent protection relay circuit institute provided herein pass through
RS232 data line is uploaded to host computer, realizes the on-line monitoring of load current value.
The application overcurrent protection relay circuit presented above can be used for being assembled into any overcurrent protection after
Electric appliance, the application provides following two herein:
The first structure includes relay 1, control circuit board A2, control circuit board B3, cavity seal casinghousing 4 and inserts
Foot group 7, relay 1, control circuit board A2 and control circuit board B3 are installed in cavity seal casinghousing 4 by welding manner；After
Electric appliance 1 is located at the top half of cavity seal casinghousing 4, and control circuit board A2 and control circuit board B3 are located at relay 1 and cavity
Between the bottom plate 5 of seal casinghousing 4, it is electrically connected between control circuit board A2 and control circuit board B3 with welding manner.It inserts
Foot group 7 is installed on the bottom plate 5 of cavity seal casinghousing 4, lays this Shen of having the right on control circuit board A2 and control circuit board B3
Please documented by any overcurrent protection relay circuit, specifically, control circuit board B3 mainly lays filter circuit of pressure-stabilizing,
Power supply is filtered, keeps the power supply of input circuit steady, remaining functional circuit is laid in overcurrent protection relay circuit
On control circuit board A2.
In this structure, pin group 7 includes cathode power supply pin A10, cathode power supply pin B13, negative power supply pin 14, just
Pole exports pin OUT+15 and cathode exports pin OUT-16, and wherein cathode power supply pin A10, cathode power supply pin B13 are used for
Different excitations is connect, as cathode power supply pin A10 meets+28V, cathode power supply pin B13 meets+5V；Cathode power supply pin A10, just
Pole power pin B13 and negative power supply pin 14 are connected to the power input of overcurrent protection relay circuit, and anode output is inserted
Foot OUT+15 and cathode output pin OUT-16 are connect with the positive and negative anodes output end of overcurrent protection relay circuit respectively.
Second of structure includes relay 1, control circuit board A2, control circuit board B3, cavity seal casinghousing 4 and inserts
Foot group 7, relay 1, control circuit board A2 and control circuit board B3 are installed in cavity seal casinghousing 4 by welding manner；After
Electric appliance 1 is located at the top half of cavity seal casinghousing 4, and control circuit board A2 and control circuit board B3 are located at relay 1 and cavity
Between the bottom plate 5 of seal casinghousing 4, it is electrically connected between control circuit board A2 and control circuit board B3 with welding manner.It inserts
Foot group 7 is installed on the bottom plate 5 of cavity seal casinghousing 4, lays this Shen of having the right on control circuit board A2 and control circuit board B3
It documented please be reserved with the overcurrent protection relay circuit of data receiver and data sending terminal, specifically, control circuit board
B3 mainly lays filter circuit of pressure-stabilizing, is filtered to power supply, keeps the power supply of input circuit steady, overcurrent protection relay circuit
In remaining functional circuit be laid on control circuit board A2.
In this structure, pin group 7 includes that cathode power supply pin A10, data send pin 11, data receiver pin 12, just
Pole power pin B13, negative power supply pin 14, anode output pin OUT+15 and cathode export pin OUT-16, wherein anode
Power pin A10, cathode power supply pin B13 are for connecing different excitations, as cathode power supply pin A10 meets+28V, cathode power supply
Pin B13 meets+5V；Cathode power supply pin A10, cathode power supply pin B13 and negative power supply pin 14 be connected to overcurrent protection after
The power input of appliance circuit, anode output pin OUT+15 and cathode output pin OUT-16 respectively with overcurrent protection relay
The positive and negative anodes output end of device circuit connects；Data send the data reserved on pin 11 and data receiver pin 12 and governor circuit
Receiving end is connected with data sending terminal.
Overcurrent protection relay circuit provided herein is utilized in the overcurrent protection relay of both the above structure, makes
It is provided with I2T anti-time limit characteristic, and be the hybrid of relay and discrete device in structure, solve existing solid-state relay
Current leakage caused by due to using discrete device completely.Each pin in its pin group is itself and load, power supply, Yi Jishang
Connecting pin between the machine of position.
The overcurrent protection relay of both the above structure is in relay 1, control circuit board A2 and control circuit board B3 and sky
Gap location between chamber seal casinghousing 4 fills organic heat conductive silica gel 9.The above welding manner is to be sealed under nitrogen protection by laser
It is completed under weldering sealing.
In addition, it is exhausted to be laid with glass between the pin group 7 in the overcurrent protection relay of both the above structure and bottom plate 5
Edge 6.
Further, the overcurrent protection relay of both the above structure further includes that cavity sealing is installed on by welding manner
The mounting rack 8 of 4 two sides of shell.
Further explanation to illustrations is: IN connects+28V input power and cathode, OUT+ and OUT- string in circuit
Couple between load and power supply, RXD and TXD connect RS232 communication port.
The parameter information of each device is as follows in circuit:
Transient voltage suppressor diode TVS1:SMAJ36CA；
Resistance R1, R6, R7:1.2K Ω；
Resistance R2, R3:100K Ω；
Resistance R4:1K Ω；
Resistance R5:20K Ω；
Diode D1, D3:1N4007；
Zener diode Z1:AD2035K；
Relay J1:KJZC-102M/027L-01；
Capacitor C2~C5:0.1 μ F, 50V；
Capacitor C1:4.7 μ F, 50V；
Single-chip microcontroller IC1:STC15W204S/SOP8；
Hall sensor IC2:ACS712ELCTR-30A-T.
The parameter of above each component is only used as referring to, and can use satisfactory component according to actual needs.
Above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, those of ordinary skill in the art couple
The modification or equivalent replacement that the technical solution of the utility model is made, without departing from the spirit of the technical solution of the utility model
And range, it is encompassed by the scope of the claims of the utility model.
Claims (11)
1. a kind of overcurrent protection relay circuit, it is characterised in that: including relay, governor circuit, transistor switching circuit with
And current sampling circuit, the coil of the relay are series at entire circuit power electrode input end and transistor switch electricity
Between the power end on road；The signal output end of the governor circuit is connected to the control terminal of the transistor switching circuit, described
The output end of current sampling circuit is connected to the signal input part of the governor circuit, and two contacts of the relay connect respectively
Positive and negative anodes output end of the conducting wire as entire circuit is connect, the signal input part of the current sampling circuit is electrically connected to the relay
The output end of device.
2. overcurrent protection relay circuit according to claim 1, it is characterised in that: it further include filter circuit of pressure-stabilizing, electricity
Road power supply provides operating voltage after the filter circuit of pressure-stabilizing for the governor circuit and the current sampling circuit.
3. overcurrent protection relay circuit according to claim 1, it is characterised in that: be reserved with number on the governor circuit
According to receiving end and data sending terminal.
4. overcurrent protection relay circuit according to claim 1, it is characterised in that: the current sampling circuit includes suddenly
That sensor IC.
5. overcurrent protection relay circuit according to claim 1, it is characterised in that: the governor circuit is configured to basis
I2T curve exports control instruction.
6. a kind of overcurrent protection relay, it is characterised in that: the relay includes relay (1), control circuit board A (2), control
Circuit board B (3), cavity seal casinghousing (4) and pin group (7), the relay (1), the control circuit board A (2) and institute
It states control circuit board B (3) to be installed in the cavity seal casinghousing (4), the pin group (7) is installed on the cavity capsul
On the bottom plate (5) of body (4)；Claim 1-5 are laid on the control circuit board A (2) and the control circuit board B (3)
Overcurrent protection relay circuit described in meaning one；The pin group (7) include cathode power supply pin A (10), cathode power supply insert
Foot B (13), negative power supply pin (14), anode output pin (15) and cathode output pin (16), the cathode power supply pin A
(10), the cathode power supply pin B (13) and the negative power supply pin (14) are connected to the overcurrent protection relay circuit
Power input, it is described anode output pin (15) and the cathode export pin (16) respectively with the overcurrent protection relay
The positive and negative anodes output end of device circuit connects.
7. overcurrent protection relay according to claim 6, it is characterised in that: the pin group (7) and the bottom plate (5)
Between be laid with glass insulator (6).
8. overcurrent protection relay according to claim 6 or 7, it is characterised in that: further include that be installed on the cavity close
The mounting rack (8) of capsule body (4) two sides.
9. a kind of overcurrent protection relay, it is characterised in that: the relay includes relay (1), control circuit board A (2), control
Circuit board B (3), cavity seal casinghousing (4) and pin group (7), the relay (1), the control circuit board A (2) and institute
It states control circuit board B (3) to be installed in the cavity seal casinghousing (4), the pin group (7) is installed on the cavity capsul
On the bottom plate (5) of body (4)；Claim 3 is laid with arbitrarily on the control circuit board A (2) and the control circuit board B (3)
The overcurrent protection relay circuit；The pin group (7) include cathode power supply pin A (10), data send pin (11),
Data receiver pin (12), cathode power supply pin B (13), negative power supply pin (14), anode output pin (15) and cathode are defeated
Pin (16) out, the cathode power supply pin A (10), the cathode power supply pin B (13) and the negative power supply pin (14)
It is connected to the power input of the overcurrent protection relay circuit, anode output pin (15) and cathode export pin
(16) it is connect respectively with the positive and negative anodes output end of the overcurrent protection relay circuit；The data send pin (11) and described
Data receiver pin (12) is connect with the data receiver and data sending terminal reserved on the governor circuit.
10. overcurrent protection relay according to claim 9, it is characterised in that: the pin group (7) and the bottom plate
(5) glass insulator (6) are laid between.
11. overcurrent protection relay according to claim 9 or 10, it is characterised in that: further include being installed on the cavity
The mounting rack (8) of seal casinghousing (4) two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926470.4U CN208272608U (en) | 2018-06-15 | 2018-06-15 | Overcurrent protection relay circuit and overcurrent protection relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926470.4U CN208272608U (en) | 2018-06-15 | 2018-06-15 | Overcurrent protection relay circuit and overcurrent protection relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208272608U true CN208272608U (en) | 2018-12-21 |
Family
ID=64690478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820926470.4U Active CN208272608U (en) | 2018-06-15 | 2018-06-15 | Overcurrent protection relay circuit and overcurrent protection relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208272608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113556112A (en) * | 2020-04-24 | 2021-10-26 | 贵州振华群英电器有限公司（国营第八九一厂） | Solid relay and application thereof |
-
2018
- 2018-06-15 CN CN201820926470.4U patent/CN208272608U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113556112A (en) * | 2020-04-24 | 2021-10-26 | 贵州振华群英电器有限公司（国营第八九一厂） | Solid relay and application thereof |
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