CN205945225U - Take miniature double - circuit power supply switcher of lightning protection - Google Patents
Take miniature double - circuit power supply switcher of lightning protection Download PDFInfo
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- CN205945225U CN205945225U CN201620968930.0U CN201620968930U CN205945225U CN 205945225 U CN205945225 U CN 205945225U CN 201620968930 U CN201620968930 U CN 201620968930U CN 205945225 U CN205945225 U CN 205945225U
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Abstract
The utility model relates to a take miniature double - circuit power supply switcher of lightning protection. A take miniature double - circuit power supply switcher of lightning protection, it includes shell upper cover and shell base, the shell upper cover rear side is equipped with a rectangle input port, and the shell upper cover front side also is equipped with a rectangle output port, is equipped with a pilot lamp window on the shell upper cover face, install the circuit board in the shell base, circuit board rear side is equipped with the input terminal, and the input terminal is the double - circuit, and the dress is inlayed in shell upper cover's input port in the wiring hole of input terminal, output terminal is equipped with to the front side of circuit board, and the dress is inlayed in shell upper cover's output port in output terminal's wiring hole, be equipped with control circuit and luminotron in the circuit board, the bottom side of shell base still is equipped with an installation dop. The utility model discloses a take miniature double - circuit power supply switcher of lightning protection, small in size, both the steerable double - circuit switching of power time, produced when avoiding double -phase totally zero switching of power again and drawn the arc phenomenon, and improved the lightning protection of complete machine and prevented the surge performance.
Description
Technical field
This utility model is related to power supply handoff technique field, more particularly to a kind of band lightning protection miniature double loop power supply switching
Device.
Background technology
In important working space and important electrical equipment, it is necessary to assure working power can not be interrupted all the time, therefore
At least need to power using two-way input power, wherein one tunnel is main power source, and another road is stand-by power supply, by double loop power supply
Automatic switching control equipment or switch are ensureing electrical equipment continuous firing；When double loop power supply all normal power supplies, main power source and use
Electric equipment is connected, and stand-by power supply disconnects；When mains power failure dead electricity, stand-by power supply is connected with electrical equipment, and main power source disconnects；
When main power source recovers electric power, still recover main power source and power to electrical equipment, stand-by power supply is disconnected；General large-scale two-way
Power transfer device to be switched over using A.C. contactor mostly, and relatively more small-sized rapid static double loop power supply switch then will
Use powerful thyristor to realize handoff functionality, some switch also detect power supply with complicated electronic circuit
Input and power load state, the switching action of power supply is determined with this.
At present, the power supply to some small-sized electronic equipments and accurate control device, generally requires to select small volume
Double loop power supply switch ensureing to power, and the switch volume made using A.C. contactor or controllable silicon cannot be made very
Little, such as power supply switching is carried out using the AC relay of small volume, then the underload of contact, and can not solve biphase
" arcing " problem between the line producing during totally zero double loop power supply switching, in addition the thunder and lightning interference of power circuit and power supply produce when switching
Raw surge spike is not paid attention in small capacity double power switcher yet.
Utility model content
For solving above-mentioned technical problem, this utility model provides a kind of band lightning protection miniature double loop power supply switch, volume
Quite compact, double loop power supply switching time can be controlled it is ensured that occurring without the phenomenon of arc discharge producing during biphase totally zero power supply switching,
And increased lightning protection Anti-surging function.
This utility model solves its technical problem and be employed technical scheme comprise that：A kind of band lightning protection miniature double loop power supply switching
Device, it includes outer casing upper cover and outer casing base, is provided with a rectangle input port, also sets on front side of outer casing upper cover on rear side of outer casing upper cover
There is a rectangular output mouth, outer casing upper cover face is provided with a display lamp window；Circuit board, circuit board are installed in outer casing base
Equipped with input terminal, input terminal is divided into a pair of A road power input terminal and a pair of B road power input terminal, input to rear side
The wiring hole of son is inlaid in the input port of outer casing upper cover；The front side of circuit board is divided into one equipped with lead-out terminal, lead-out terminal
To power output terminal and a ground terminal, the wiring hole of lead-out terminal is inlaid in the output port of outer casing upper cover；Circuit
It is provided with control circuit and luminous tube, the bottom side of outer casing base is additionally provided with an installation dop in plate.
Comprise Postponement module, delayed relay in described control circuit, cut relay, varistor and gas discharge soon
Pipe, the lamp holder of luminous tube is embedded in the display lamp window of outer casing upper cover；The coil of delayed relay is controlled by Postponement module, cuts soon
The coil of relay is directly connected to zero line and the zero line side of A road power input terminal；The two poles of the earth of luminous tube are connected on output respectively
In the zero line and zero line side of terminal, one end of three varistors connects zero line in the power input terminal of A road, B respectively
The zero line in zero line and lead-out terminal in the power input terminal of road, the other end connects in lead-out terminal after connecting together
Zero line side and gas-discharge tube one end, the other end of gas-discharge tube is connected with the earth terminal in lead-out terminal.
Reduction voltage circuit, rectification circuit, charging resistor, energy storage capacitor, DC relay and drive is comprised in described Postponement module
Dynamic audion；Two electrodes of Postponement module connect zero line and zero line side in the power input terminal of A road respectively；A road power supply
Zero line in input terminal connects the input of reduction voltage circuit, and the outfan of reduction voltage circuit connects the input of rectification circuit；
The coil upper end of DC relay connects the DC power anode of rectification circuit, lower termination drives the colelctor electrode of audion, drives three
The emitter stage of pole pipe connects the negative pole of DC source, conllinear with the zero line side in the power input terminal of A road, drives the base stage of audion
Connect the junction point of charging resistor and energy storage capacitor, the upper termination DC power anode of charging resistor, the lower termination of energy storage capacitor is straight
The negative pole of stream power supply；Wherein charging resistor and energy storage capacitor constitute RC retardation ratio circuit；The contact of DC relay controls delay to continue
The coil of electrical equipment.
Described luminous tube by high-brightness LED element series connection dropping resistor constitute, for indicate power supply output have electricity condition.
Described A road power input terminal be no electricity state when, delayed relay, cut soon relay be normally off, B road
The zero line of power input terminal is connected with the zero line of lead-out terminal through too fast relay and the normally-closed contact of delayed relay cut
Logical.
Described A road power input terminal is when having electricity condition, delayed relay, cuts relay all adhesive normally opened contacts, A soon
The zero line of road power input terminal cuts relay and the normally opened contact of delayed relay and the zero line of lead-out terminal through too fast
Connection.
When described A road power input terminal is to have electricity condition for having electricity condition, B road power input terminal, power switcher
Powered from A road power supply to input terminal.
The beneficial effects of the utility model：A kind of band lightning protection miniature double loop power supply switch of the present utility model, by adopting
With the conversion of power of alterating and direct current, in control circuit, power supply switching is carried out using DC relay, substantially reduce the body of product
Long-pending；Using the method for RC delay circuit, double loop power supply switching time can be controlled, avoid producing during biphase totally zero power supply switching again
Raw phenomenon of arc discharge；To suppress the spike producing during power supply switching using lightning protection composition element, to improve whole machine simultaneously
Lightning protection and Anti-surging performance.
Brief description
Fig. 1 is a kind of schematic diagram with lightning protection miniature double loop power supply switch of embodiment；
Fig. 2 is a kind of non-switching state circuit diagram with lightning protection miniature double loop power supply switch of embodiment；
Fig. 3 is a kind of operating state circuit diagram with lightning protection miniature double loop power supply switch of embodiment；
Fig. 4 is a kind of circuit diagram of Postponement module with lightning protection miniature double loop power supply switch of embodiment.
Specific embodiment
In order to deepen, to understanding of the present utility model, below in conjunction with drawings and Examples, this utility model to be done further
Describe in detail, this embodiment is only used for explaining this utility model, protection domain of the present utility model is not constituted and limits.
Embodiment
As shown in Figures 1 to 4, a kind of band lightning protection miniature double loop power supply switch, it includes outer casing upper cover 1 and outer casing base
2, it is provided with a rectangle input port 3 on rear side of outer casing upper cover 1, also be provided with a rectangular output mouth 4 on front side of outer casing upper cover 1, outward
1 face of covering on shell is provided with a display lamp window 5；Circuit board 8 is installed, equipped with input terminal on rear side of circuit board 8 in outer casing base 2
6, input terminal 6 is divided into a pair of A road power input terminal and a pair of B road power input terminal, the wiring hole setting-in of input terminal 6
In the input port 3 of outer casing upper cover 1；Equipped with lead-out terminal 7, lead-out terminal 7 is divided into a pair of power supply output for the front side of circuit board 8
Terminal and a ground terminal, the wiring hole of lead-out terminal 7 is inlaid in the output port 4 of outer casing upper cover 1；Set in circuit board 8
There are control circuit 9 and luminous tube 11, the bottom side of outer casing base 2 is additionally provided with an installation dop 10；In described control circuit 9
Comprise Postponement module 9a, delayed relay 9b, cut relay 9c, varistor 9d and gas-discharge tube 9e soon, luminous tube 11
Lamp holder is embedded in the display lamp window 5 of outer casing upper cover 1；The coil of delayed relay 9b is controlled by Postponement module 9a, cuts relay soon
The coil of device 9c is directly connected to zero line and the zero line side of A road power input terminal；The two poles of the earth of luminous tube 11 are connected on output respectively
On the live wire and zero line of terminal 7, one end of three varistor 9d connects zero line in the power input terminal of A road, B road respectively
Zero line in zero line in power input terminal and lead-out terminal 7, the other end connects in lead-out terminal 7 after connecting together
Zero line side and gas-discharge tube 9e one end, the other end of gas-discharge tube 9e is connected with the earth terminal in lead-out terminal 7；Institute
State and in Postponement module 9a, comprise reduction voltage circuit 9a1, rectification circuit 9a2, charging resistor 9a3, energy storage capacitor 9a4, DC relay
9a5 and driving audion 9a6；Two electrodes of Postponement module 9a connect the zero line and zero in the power input terminal of A road respectively
Line end；Zero line in the power input terminal of A road connects reduction voltage circuit 9a1, meets rectification circuit 9a2 after blood pressure lowering again；Direct current relay
The coil upper end of device 9a5 meets rectification circuit 9a2 and exports the positive pole of DC source, the colelctor electrode of lower termination driving audion 9a6, drives
The emitter stage of dynamic audion 9a6 connects the negative pole of DC source, conllinear with the zero line side in the power input terminal of A road, drives three poles
The base stage of pipe 9a6 connects charging resistor 9a3 and the junction point of energy storage capacitor 9a4, the upper termination rectification circuit 9a2 of charging resistor 9a3,
The negative pole of the lower termination DC source of energy storage capacitor 9a4；Wherein charging resistor 9a3 and energy storage capacitor 9a4 constitute classical RC and prolong
Circuit late；The contact of DC relay 9a5 controls the coil of delayed relay 9b；Described luminous tube is by high-brightness LED element string
Connection dropping resistor constitute, for indicate power supply output have electricity condition；When described A road power input terminal is no electric state,
Delayed relay 9b, to cut relay 9c soon be normally off, the zero line of B road power input terminal through too fast cut relay 9c and
The normally-closed contact of delayed relay 9b is connected with the zero line of lead-out terminal 7；Described A road power input terminal is to have electricity condition
When, delayed relay 9b, cut relay 9c all adhesive normally opened contacts soon, the zero line of A road power input terminal continues through too fast cutting
Electrical equipment 9c is connected with the zero line of lead-out terminal 7 with the normally opened contact of delayed relay 9b；Described A road power input terminal is to have
When electricity condition, B road power input terminal are to have electricity condition, power switcher is powered from A road power supply to input terminal.
In Fig. 2 to Fig. 4, J1 is delayed relay, and J2 is to cut relay soon, and ZY is reduction voltage circuit, and ZL is rectification circuit, R
For charging resistor, C is energy storage capacitor, and J3 is DC relay, and Q is to drive audion, and LA is A road live wire, and NA is A road zero line,
LB is A road live wire, and NB is B road zero line, and PE is earth terminal.
As shown in figure 1, a kind of band lightning protection miniature double loop power supply switch of the present embodiment, a left side for input terminal when using
The external main power source of a pair of of side A road power supply terminal；The external stand-by power supply of a pair of B road power supply terminal on right side, A, B two in input terminal
Road power supply can be power supply that two independent current sources not being total to zero line, such as electric network source and fuel electric generator provide or
Any two-phase power supply in two groups of power supplys of zero line altogether, such as three phase mains；In lead-out terminal, a pair of power source terminals in left side connects
External electric equipment, a PE terminal on right side is lightning protection terminal it is necessary to be reliably connected with outside the earth terminal nearby,
There is provided unimpeded discharge channel to lightning protection and Anti-surging impact；In this switch normal work, the display lamp window of outer casing upper cover
In visible green light；When installing this switch, the bottom surface of outer casing base can be stuck in the U-shaped guide rail of standard of 35mm
On, pushed to centre with the installation dop of outer casing base side, in order to by outer casing base and guide rail clamping.
In a kind of band lightning protection miniature double loop power supply switch of the present embodiment, varistor is not having thunder and lightning and surge impact
When be in high-impedance state, do not affect the work of power circuit, when power circuit be subject to instantaneous pressure impact when, inside varistor
Assume rapidly low-resistance conducting, so that surge current is released to the earth by gas-discharge tube；Gas-discharge tube is not having high pressure punching
Equally assume open-circuit condition when hitting, the micro electric leakage of varistor itself can be prevented, in impacting with high pressure, in gas-discharge tube
Portion's gas punctures rapidly, assumes channel status；After thunder and lightning and surge impact disappearance, varistor and gas-discharge tube are all extensive
Multiple high resistance state, repeated multiple times can play lightning protection and Anti-surging effect.
As shown in Fig. 2 a kind of band lightning protection miniature double loop power supply switch of the present embodiment, do not power OFF in A road power supply
When state, no matter now whether B road power supply has electric ON/OFF, the coil of each relay in circuit does not all obtain electricity
Source, so the contact of each relay is in normally off without action, circuit is in the state not switched；In this state
The normally-closed contact through the too fast normally-closed contact cutting relay J2 and delayed relay J1 for the live wire LB in the power supply of B road and lead-out terminal
In live wire L connect, can be powered from B road power supply to outfan, NA, NB of in figure are not cut together with being both connected to N line
Change, this is a kind of double loop power supply single line switching circuit designing for reducing machine volume.
As shown in figure 3, a kind of band lightning protection miniature double loop power supply switch of the present embodiment, when A road power supply has electric ON
State, is not now affected by the B road power supply ON/OFF that whether powers, the coil of each relay in circuit all obtains electricity successively
Source, so the contact of each relay is in changing adhesive action state, the live wire LA in A road power supply in this state is through too fast
Cut the normally opened contact of all adhesives in relay J2 and delayed relay J1, connect with the live wire L in lead-out terminal, and cut soon
The transfer contact of relay J2 and delayed relay J1 is all disconnected with the live wire LB line of B road power supply, as long as so A road power supply has
Electricity, no matter whether B road power supply has electricity, circuit is all the time from A road power supply to output power supply；If the double loop power supply accessing in circuit
It is two single phase poaer supplies in three phase mains, then the voltage between LA and LB line is 380V, meeting during power supply switching
Phenomenon of arc discharge occurs, switching device when serious, will be burnt；Therefore, the adhesive of delayed relay J1 can not be too fast, and it is fast that it postpones
Slowly by Postponement module control.
A kind of band lightning protection miniature double loop power supply switch of the present embodiment as shown in Figure 4, the wherein electricity of Postponement module both sides
Pole connects the live wire LA and zero line NA of A road power supply respectively, after alternating current 220V plant-grid connection Postponement module, first passes through reduction voltage circuit JY
Voltage is reduced to exchange 15V, then through rectification circuit ZL, alternating current power supply is transformed into stable 12V DC low-voltage electricity
Source, thus can control the larger delayed relay J1 of power using micro DC relay J3；DC relay J3's
Coil upper end connects the anode of 12V power supply, and the lower termination of coil drives the colelctor electrode of audion Q, drives the emitter stage of audion Q to connect
12V power cathode, its base stage connects charging resistor R and the junction point of storage capacitor C, and the upper end of charging resistor R also connects 12V power supply
Positive pole, the negative pole of the lower termination 12V power supply of storage capacitor C；Wherein charging resistor R and storage capacitor C constitute classical RC retardation ratio
Circuit；When external A road power supply has electricity, the two poles of the earth of Postponement module are instantly available alternating current power supply, and it is low that inside is converted into direct current immediately
Voltage source, then 12V power supply through charging resistor R to energy storage capacitor C charge, when charging voltage rises to 0.7V, drive three
Turn between the collector and emitter of pole pipe Q, make the coil electricity of DC relay J3, the delay ordering about its contact portion continues
Electrical equipment J1 coil switch power, and then make the contact adhesive of delayed relay J1, complete A road power supply cutting to the power supply exporting
Change；So pass through reduce charging resistor R resistance and reduce energy storage capacitor C capacity it is possible to shorten DC relay J3 and
The pickup time of delayed relay J1, if instead increase R and C it is possible to postpone the pickup time of this two relays；No
Cross, if relay postpone adhesive time excessively slow although favourable to suppressing alternate power supply arcing, but electrical equipment can be affected
Normal work, so wanting reasonable selection RC element to control the switching of whole double loop power supply, reaching and being applied to all kinds two-way
The input of power supply and the purpose making whole switch volume miniaturization.
A kind of band lightning protection miniature double loop power supply switch of the present embodiment, by the conversion using power of alterating and direct current, in control
In circuit processed, power supply switching is carried out using DC relay, substantially reduce the volume of product；Side using RC delay circuit
Method, can control double loop power supply switching time, avoid the phenomenon of arc discharge producing during biphase totally zero power supply switching again；Using lightning protection group
Close element to suppress the spike producing during power supply switching, improve lightning protection and the Anti-surging performance of whole machine simultaneously.
Above-described embodiment should not in any way limit this utility model, all by the way of equivalent or equivalency transform
The technical scheme obtaining all falls within protection domain of the present utility model.
Claims (7)
1. a kind of band lightning protection miniature double loop power supply switch it is characterised in that：It includes outer casing upper cover and outer casing base, on shell
It is provided with a rectangle input port on rear side of lid, on front side of outer casing upper cover, also is provided with a rectangular output mouth, outer casing upper cover sets on face
There is a display lamp window；Circuit board is installed in outer casing base, equipped with input terminal on rear side of circuit board, input terminal is divided into a pair
A road power input terminal and a pair of B road power input terminal, the wiring hole of input terminal is inlaid in the input port of outer casing upper cover
In；Equipped with lead-out terminal, lead-out terminal is divided into a pair of power output terminal and a ground terminal, outfan for the front side of circuit board
The wiring hole of son is inlaid in the output port of outer casing upper cover；It is provided with control circuit and luminous tube in circuit board, outer casing base
Bottom side is additionally provided with an installation dop.
2. a kind of band lightning protection miniature double loop power supply switch according to claim 1 it is characterised in that：Described control circuit
In comprise Postponement module, delayed relay, cut relay, varistor and gas-discharge tube soon, the lamp holder of luminous tube is embedded in
In the display lamp window of outer casing upper cover；The coil of delayed relay is controlled by Postponement module, and the coil cutting relay soon is directly connected to A
The zero line of road power input terminal and zero line side；The two poles of the earth of luminous tube are connected on zero line and the zero line side of lead-out terminal respectively
On, one end of three varistors connects the zero line in the power input terminal of A road, the fire in the power input terminal of B road respectively
Zero line in line end and lead-out terminal, the other end connects zero line side and gas-discharge tube in lead-out terminal after connecting together
One end, the other end of gas-discharge tube is connected with the earth terminal in lead-out terminal.
3. a kind of band lightning protection miniature double loop power supply switch according to claim 2 it is characterised in that：Described Postponement module
In comprise reduction voltage circuit, rectification circuit, charging resistor, energy storage capacitor, DC relay and drive audion；The two of Postponement module
Individual electrode connects zero line and zero line side in the power input terminal of A road respectively；Zero line in the power input terminal of A road connects
The input of reduction voltage circuit, the outfan of reduction voltage circuit connects the input of rectification circuit；The coil upper end of DC relay connects
The DC power anode of rectification circuit, lower termination drive the colelctor electrode of audion, drive the emitter stage of audion to connect DC source
Negative pole, conllinear with the zero line side in the power input terminal of A road, drive the base stage of audion to connect charging resistor and energy storage capacitor
Junction point, the upper termination DC power anode of charging resistor, the negative pole of the lower termination DC source of energy storage capacitor；Wherein charge electricity
Resistance and energy storage capacitor constitute RC retardation ratio circuit；The contact of DC relay controls the coil of delayed relay.
4. a kind of band lightning protection miniature double loop power supply switch according to claim 2 it is characterised in that：Described luminous tube by
High-brightness LED element series connection dropping resistor constitute, for indicate power supply output have electricity condition.
5. a kind of band lightning protection miniature double loop power supply switch according to claim 2 it is characterised in that：Described A road power supply
Input terminal be no electricity state when, delayed relay, cut soon relay be normally off, the live wire of B road power input terminal
End is connected with the zero line of lead-out terminal with the normally-closed contact of delayed relay through too fast relay of cutting.
6. a kind of band lightning protection miniature double loop power supply switch according to claim 2 it is characterised in that：Described A road power supply
Input terminal is when having electricity condition, delayed relay, cuts relay all adhesive normally opened contacts, the fire of A road power input terminal soon
Line end is connected with the zero line of lead-out terminal with the normally opened contact of delayed relay through too fast relay of cutting.
7. a kind of band lightning protection miniature double loop power supply switch according to claim 2 it is characterised in that：Described A road power supply
Input terminal is to have electricity condition, B road power input terminal for, when having electricity condition, power switcher is from A road power supply to input terminal
Power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620968930.0U CN205945225U (en) | 2016-08-29 | 2016-08-29 | Take miniature double - circuit power supply switcher of lightning protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620968930.0U CN205945225U (en) | 2016-08-29 | 2016-08-29 | Take miniature double - circuit power supply switcher of lightning protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205945225U true CN205945225U (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620968930.0U Active CN205945225U (en) | 2016-08-29 | 2016-08-29 | Take miniature double - circuit power supply switcher of lightning protection |
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| CN (1) | CN205945225U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130176A (en) * | 2016-08-29 | 2016-11-16 | 苏州工业园区科佳自动化有限公司 | A kind of band lightning protection miniature double loop power supply switch |
-
2016
- 2016-08-29 CN CN201620968930.0U patent/CN205945225U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130176A (en) * | 2016-08-29 | 2016-11-16 | 苏州工业园区科佳自动化有限公司 | A kind of band lightning protection miniature double loop power supply switch |
| CN106130176B (en) * | 2016-08-29 | 2018-07-17 | 苏州工业园区科佳自动化有限公司 | A kind of miniature double loop power supply switch of band lightning protection |
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