CN107481904A - The online instruction device of low-tension fuse - Google Patents
The online instruction device of low-tension fuse Download PDFInfo
- Publication number
- CN107481904A CN107481904A CN201710829861.4A CN201710829861A CN107481904A CN 107481904 A CN107481904 A CN 107481904A CN 201710829861 A CN201710829861 A CN 201710829861A CN 107481904 A CN107481904 A CN 107481904A
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- CN
- China
- Prior art keywords
- diode
- fuse
- electric capacity
- circuit board
- indicator lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
- H01H85/32—Indicating lamp structurally associated with the protective device
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- Fuses (AREA)
Abstract
The present invention relates to technical field of electric power, discloses a kind of online instruction device of low-tension fuse, including：Housing, circuit board, indicator lamp and two panels clamp button of the spring, the two panels clamp button of the spring is separately mounted to the both ends of the housing, clamp button of the spring is provided with the fixing hole being used for fuse both ends mode connects for screw, the circuit board is sealed in the housing, two test sides of circuit board connect two panels clamp button of the spring respectively, the indicator lamp is arranged on housing, and it is connected with the circuit board, the circuit board is used for the potential difference for detecting fuse both ends in real time, when potential difference is more than or equal to the potential difference that can reach when fuse is opened a way, the indicator lamp is controlled to flash, opened a way with indicating fuse.The present invention can easily observe the situation of the fuse piece disconnection of fuse by viewing lamp.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of online instruction device of low-tension fuse.
Background technology
Outdoor distribution transformer, as the Core equipment of distribution line, usually because of low-pressure side line fault and caused by equipment
Damage, NHL2 fuses are that domestic first item is directed to transformer overload and short circuit is protected while and conventional low fuse piece
Upgraded product, and the fuse does not possess state-indicating function, and equipment is arranged on height of 3~5 meters away from ground, at all
It can not observe whether the fuse piece of fuse fuses, if fusing occurs, at night, to be just more difficult to distinguish its state.It is molten when occurring
Have no progeny, attendant generally requires to take instrument, climbs up electric pole and is confirmed, workload is big, and it is inconvenient to safeguard.
The content of the invention
The present invention proposes a kind of online instruction device of low-tension fuse, and solving can not observe that fuse piece is in the prior art
The problem of no fusing.
A kind of online instruction device of low-tension fuse of the present invention, including：Housing, circuit board, indicator lamp and two flat springs
Buckle, the two panels clamp button of the spring are separately mounted to the both ends of the housing, and clamp button of the spring, which is provided with, to be used for and fuse both ends
The fixing hole of mode connects for screw, the circuit board are sealed in the housing, and two test sides of circuit board connect two panels bullet respectively
Spring buckle, the indicator lamp is arranged on housing, and is connected with the circuit board, and the circuit board is used to detect fuse in real time
The potential difference at both ends, when potential difference is more than or equal to the potential difference that can reach when fuse is opened a way, the indicator lamp is controlled to dodge
It is bright, opened a way with indicating fuse.
Wherein, detection circuit and integrating circuit are integrated with the circuit board, the detection circuit includes：First detection
End, the second test side, first resistor, the first electric capacity, the second electric capacity, Transient Suppression Diode, controllable silicon and the pole of two-way triggering two
Pipe, the integrating circuit include：3rd electric capacity, the 4th electric capacity, the 5th electric capacity, second resistance and 3rd resistor；
First resistor and the series connection of the first electric capacity, first resistor connect the first test side, the first capacitance connection second resistance
First end, the second electric capacity connect the first end of second resistance with the respective one end of Transient Suppression Diode, and the other end is grounded, and second
Test side is grounded；
The positive pole of the first diode of the second end connection and the negative pole of the second diode of the second resistance, the 4th electric capacity,
The positive pole of the respective one end of bidirectional trigger diode and the 3rd diode is all connected with the negative pole of first diode, and described
The other end ground connection of four electric capacity, the control pole of the other end connection controllable silicon of bidirectional trigger diode, the negative electrode connection of controllable silicon
The positive pole of second diode, anode connect one end of indicator lamp, and the other end of indicator lamp connects the three or two pole by the 4th resistance
The negative pole of pipe, one end of the 5th electric capacity connect the negative pole of the 3rd diode, and the other end connects the positive pole of the second diode, the 3rd electricity
Hold the positive pole that the second diode is connected with 3rd resistor one end, other end ground connection.
Wherein, the indicator lamp includes the LED of four series connection.
The online instruction device of low-tension fuse of the present invention works as current potential by the potential difference at circuit board detecting fuse both ends
When difference is more than or equal to the potential difference that can reach during fuse open circuit, the indicator lamp is controlled to flash, so as to easily see
Measure the situation that the fuse piece of fuse disconnects.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of online instruction device structural representation of outdoor low voltage fuse of the present invention；
Fig. 2 is Fig. 1 side view；
Fig. 3 is Fig. 1 top view；
Fig. 4 is a kind of online instruction device circuit theory schematic diagram of outdoor low voltage fuse of the present invention；
Fig. 5 is Fig. 1 particular circuit configurations figure.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The online instruction device of low-tension fuse of the present embodiment as shown in figure 1, including：Housing 2, circuit board 3, indicator lamp 4
With two panels clamp button of the spring 1, two panels clamp button of the spring 1 is separately mounted to the both ends of housing 2, and clamp button of the spring 1, which is provided with, to be used for and fusing
The fixing hole of device both ends mode connects for screw.Circuit board 3 is sealed in housing 2, and two test sides of circuit board connect two panels respectively
Clamp button of the spring, i.e., electrically connected by two panels clamp button of the spring 1 with fuse both ends, indicator lamp 4 is arranged on housing 2, and and circuit
Plate 3 connects, and circuit board 3 is used for the potential difference for detecting fuse both ends in real time, when potential difference is more than or equal to fuse open circuit when institute
During the potential difference that can reach, control indicator lamp 4 flashes, and is opened a way with indicating fuse, consequently facilitating observing the fuse piece of fuse
The situation of disconnection.
The online instruction device of low-tension fuse of the present embodiment is simple in construction, easy for installation, and instruction is reliable；Can effectively solve
Under bar in the range of 3~5 meters and night can accurately differentiate fuse running status, so as to mitigate the workload of attendant, carry
High workload efficiency.
Clamp button of the spring 1 is steel plate cold stamping shaped by stainless steel spring, and the screw of fixing hole and fuse side, which is formed, to be positioned,
And at work as the part being electrically connected.Housing 2 is molded using engineering material, and ageing resistace requires that UV2000 is small
When.Circuit board 3 is the core of indicator, after assembling product outside circuit board encapsulating, meet product I P67 degree of protection, so as to
Work out of doors.
As shown in figure 4, being integrated with detection circuit 31 and integrating circuit 32 on circuit board 3, detection circuit 31 includes：First inspection
Survey end S1, the second test side S2, first resistor R1, the first electric capacity C1, the second electric capacity C2, Transient Suppression Diode D4, controllable silicon
Q1 and bidirectional trigger diode Q2, wherein the first test side S1 and the second test side S2 connect two panels clamp button of the spring 1 respectively.Integration
Circuit 32 includes：3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, second resistance R2 and 3rd resistor R3.
First resistor R1 and the first electric capacity C1 series connection, first resistor R1 connections the first test side S1, the first electric capacity C1 connections
Second resistance R2 first end, the second electric capacity C2 connect the first of second resistance R2 with the respective one end of Transient Suppression Diode D4
End, other end ground connection, the second test side S2 ground connection；
The first diode D1 of the second end connection positive pole and the second diode D2 negative pole of the second resistance R2, the 4th
Electric capacity C4, the respective one end of bidirectional trigger diode Q2 and the 3rd diode D3 positive pole are all connected with the first diode D1
Negative pole, the other end ground connection of the 4th electric capacity C4, bidirectional trigger diode Q2 other end connection controllable silicon Q1 control
Pole, controllable silicon Q1 negative electrode connect the second diode D2 positive pole, and anode connects one end of indicator lamp, and the other end of indicator lamp leads to
The diode D3 of the 4th resistance R4 connections the 3rd negative pole is crossed, the 5th electric capacity C5 one end connects the 3rd diode D3 negative pole, separately
One end connects the second diode D2 positive pole, and the 3rd electric capacity C3 connects the second diode D2 positive pole with 3rd resistor R3 one end,
The other end is grounded.
In circuit, R1, C1, C2 form bleeder circuit, and D4 is used for absorbing momentary spikes pulse, and Q1, Q2 are used as opening for circuit
Combination switch.C4, C3 store electricity, when storing electricity reaches certain voltage (even if voltage of Q2 conductings), for triggering Q2, make
Q2 conductings are obtained, C5 storage electricity, voltage are provided for indicator lamp.D1, D2, D3 play a part of bridge rectifier, R4 to whole circuit
Current limliting is carried out to indicator lamp, prevents electric current is excessive from burning out indicator lamp.
The online instruction device operation principle of low-tension fuse of the present embodiment is as follows：
Before fusing, fuse is in the conduction state, and the online instruction device of low-tension fuse is short-circuited, and Q1, Q2 are in cut-off
State, C1, C2, C3, C4, C5 electric capacity not do not light by storing electricity, tetra- LEDs of LED1, LED2, LED3 and LED4；Work as generation
After fusing, the online instruction device of low-tension fuse is in running order, and C1, C2, C3, C4 and C5 electric capacity carry out charging storage electricity
Amount, when certain electricity is arrived in the storage of C3 and C4 electric capacity, reach Q2 conducting voltage so that Q2 is turned on, and then Q1 control pole has
Voltage causes controllable silicon to be on, and last C5 electric capacity is discharged so that four LEDs are lighted.
In the present embodiment, indicator lamp includes the LED of four series connection, i.e. LED1, LED2, LED3 and LED4.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (3)
- A kind of 1. online instruction device of low-tension fuse, it is characterised in that including：Housing, circuit board, indicator lamp and two flat springs Buckle, the two panels clamp button of the spring are separately mounted to the both ends of the housing, and clamp button of the spring, which is provided with, to be used for and fuse both ends The fixing hole of mode connects for screw, the circuit board are sealed in the housing, and two test sides of circuit board connect two panels bullet respectively Spring buckle, the indicator lamp is arranged on housing, and is connected with the circuit board, and the circuit board is used to detect fuse in real time The potential difference at both ends, when potential difference is more than or equal to the potential difference that can reach when fuse is opened a way, the indicator lamp is controlled to dodge It is bright, opened a way with indicating fuse.
- 2. the online instruction device of low-tension fuse as claimed in claim 1, it is characterised in that inspection is integrated with the circuit board Slowdown monitoring circuit and integrating circuit, the detection circuit include：First test side, the second test side, first resistor, the first electric capacity, Two electric capacity, Transient Suppression Diode, controllable silicon and bidirectional trigger diode, the integrating circuit include：3rd electric capacity, the 4th electricity Appearance, the 5th electric capacity, second resistance and 3rd resistor；First resistor and the series connection of the first electric capacity, the first test side of first resistor connection, the first of the first capacitance connection second resistance End, the second electric capacity connect the first end of second resistance, other end ground connection, the second detection with the respective one end of Transient Suppression Diode End ground connection；Second end of the second resistance connects the positive pole of the first diode and the negative pole of the second diode, the 4th electric capacity, two-way The positive pole of the respective one end of diac and the 3rd diode is all connected with the negative pole of first diode, the 4th electricity The other end ground connection of appearance, the control pole of the other end connection controllable silicon of bidirectional trigger diode, the negative electrode connection second of controllable silicon The positive pole of diode, anode connect one end of indicator lamp, and the other end of indicator lamp connects the 3rd diode by the 4th resistance Negative pole, one end of the 5th electric capacity connect the negative pole of the 3rd diode, and the other end connects the positive pole of the second diode, the 3rd electric capacity and 3rd resistor one end connects the positive pole of the second diode, other end ground connection.
- 3. low-tension fuse as claimed in claim 2 indicates to fill online, it is characterised in that the indicator lamp includes four series connection LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710829861.4A CN107481904B (en) | 2017-09-15 | 2017-09-15 | The online instruction device of low-tension fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710829861.4A CN107481904B (en) | 2017-09-15 | 2017-09-15 | The online instruction device of low-tension fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107481904A true CN107481904A (en) | 2017-12-15 |
| CN107481904B CN107481904B (en) | 2019-03-01 |
Family
ID=60584194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710829861.4A Active CN107481904B (en) | 2017-09-15 | 2017-09-15 | The online instruction device of low-tension fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107481904B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001351503A (en) * | 2000-06-05 | 2001-12-21 | Bosch Automotive Systems Corp | Fuse check circuit |
| US20100271045A1 (en) * | 2009-04-23 | 2010-10-28 | Toshiba International Corporation | Open Fuse Detection by Neutral Point Shift |
| CN202111038U (en) * | 2011-07-11 | 2012-01-11 | 温州市方为熔断器有限公司 | Fuse support element with indicating light |
| CN104037030A (en) * | 2014-07-02 | 2014-09-10 | 南昌航空大学 | Safety device with U-shaped memory alloy |
-
2017
- 2017-09-15 CN CN201710829861.4A patent/CN107481904B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001351503A (en) * | 2000-06-05 | 2001-12-21 | Bosch Automotive Systems Corp | Fuse check circuit |
| US20100271045A1 (en) * | 2009-04-23 | 2010-10-28 | Toshiba International Corporation | Open Fuse Detection by Neutral Point Shift |
| CN202111038U (en) * | 2011-07-11 | 2012-01-11 | 温州市方为熔断器有限公司 | Fuse support element with indicating light |
| CN104037030A (en) * | 2014-07-02 | 2014-09-10 | 南昌航空大学 | Safety device with U-shaped memory alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107481904B (en) | 2019-03-01 |
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