CN2929952Y - Fuse capable of indicating fault - Google Patents
Fuse capable of indicating fault Download PDFInfo
- Publication number
- CN2929952Y CN2929952Y CN 200620086801 CN200620086801U CN2929952Y CN 2929952 Y CN2929952 Y CN 2929952Y CN 200620086801 CN200620086801 CN 200620086801 CN 200620086801 U CN200620086801 U CN 200620086801U CN 2929952 Y CN2929952 Y CN 2929952Y
- Authority
- CN
- China
- Prior art keywords
- limiting resistance
- current
- fuse
- circuit
- cuttent
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Fuses (AREA)
Abstract
Disclosed is a safety fuse that can show the fault according to different color luminous indicator signal to judge the position of the faulty circuit. The device comprises a fixed lower casing, a movable upper casing, an opening spring clip, a fuse tube, a connector base and a power cord. A circuit is provided in the lower casing, and comprises a mutual serials rectifier diode D1, a red luminous diode LED1, a cuttent-limiting resistance R1 and a cuttent-limiting resistance R3 are joined in parallel on the upper and lower ports of the fuse seat. One end of the series circuit composed of a rectifier diode D2, a green luminous diode LED2 and cuttent-limiting resistance R2 is connected with the common port of the cuttent-limiting resistance R1 and the cuttent-limiting resistance R3, and the other end is connected with the other end of the electrical source via the directing line leading. The utility model can show whether the electrical source works normally, the fuse tube fuses, and the loading return circuit works normally or not.
Description
Technical field
The utility model relates to a kind of fuse, relate in particular to a kind of can be according to the light emission instruction signal of different colours, but the fuse of the indication fault of decision circuitry trouble location.
Background technology
At present, well-known RT14-20 fuse is equipped with fuse tube in it, and fuse tube is full of quartz sand by the encapsulation of high frequency porcelain tube in the pipe, play the arc extinguishing effect when cutting off electric current; When the load overcurrent, fuse tube can fuse; If it is concentrated relatively that fuse is installed, when maintenance, unless be familiar with very much the installation site of fuse, otherwise all fuses substantially all must be checked one time, can find is where to organize fuse to damage, and being difficult for Direct observation like this, to determine the end be which fuse overcurrent damages; And owing to fuse seals fully, indicating device does not fuse, unless having this moment the instrument of specialty to detect judges, otherwise can not whether fuse by the intuitive judgment fuse tube, and sometimes because power supply or fault also can judge it is the fault of fuse mistakenly, cause the false judgment of fuse maintenance, can cause the repair time long like this, reduction equipment and personnel's labor productivity.
Summary of the invention
A kind ofly can indicate power supply whether normally whether operate as normal, indication fuse tube fuse, indicate the load circuit fuse of indication fault but the purpose of this utility model provides.
For achieving the above object, the technical solution adopted in the utility model is: but a kind of fuse of indication fault, comprise fixedly lower casing, movable upper casing, the split ring card, fuse tube, junction block, power line, it is characterized in that: fixedly be provided with circuit in the lower casing, circuit comprises the rectifier diode D1 of mutual series connection, red light emitting diodes LED1, current-limiting resistance R1, serial connection current-limiting resistance R3 is attempted by two ports up and down of fuse base, rectifier diode D2, green LED LED2, current-limiting resistance R2 is in series, the rectifier diode D2 that is in series, green LED LED2, one of the series circuit that current-limiting resistance R2 forms terminates at the common port of current-limiting resistance R1 and current-limiting resistance R3, the other end is drawn the other end that is connected to power supply by lead.
Owing to have red light emitting diodes LED1 and green LED LED2 in the utility model, can be when power supply, fuse tube or load circuit break down, give corresponding indication, so the utility model can indicate whether power supply is normal, whether the indication fuse tube fuses, indicates load circuit whether normal.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model;
Fig. 3 is the circuit diagram when fuse tube fuses in the utility model;
Fig. 4 is load RL circuit diagram of the present utility model when breaking down;
Fig. 5 be load RL break down and the utility model in the circuit diagram in fuse tube when fusing.
In the accompanying drawing: 1, split ring card; 2, red light emitting diodes; 3, power line; 4, junction block; 5, fixing lower casing; 6, green LED; 7, fuse tube; 8, movable upper casing.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described:
But a kind of fuse of indication fault, as shown in Figure 1, comprise fixedly lower casing 5, movable upper casing 8, split ring card 1, fuse tube 7, junction block 4, power line 3, fixedly be provided with circuit in the lower casing 5, as shown in Figure 2, circuit comprises the rectifier diode D1 of mutual series connection, red light emitting diodes LED1, current-limiting resistance R1, serial connection current-limiting resistance R3 is attempted by two ports up and down of fuse base, rectifier diode D2, green LED LED2, current-limiting resistance R2 is in series, the rectifier diode D2 that is in series, green LED LED2, one of the series circuit that current-limiting resistance R2 forms terminates at the common port of current-limiting resistance R1 and current-limiting resistance R3, the other end is drawn the other end that is connected to power supply by lead.
The utility model is fixedly installed a kind of circuit in the lower casing at original RT14-20 fuse, can send the light of different colours state according to the residing state of circuit loop when this circuit has above trigger voltage, thereby judge different trouble locations.This circuit only adopts seven elements, and cost simple in structure is extremely low, and the voltage of 100～700V is all available, can be widely used in industry and civilian overload protection indicating circuit, and can be regardless of phase line, zero line in using.
Necessary condition when rectifier diode D1, red light emitting diodes LED1, current-limiting resistance R1 are in series the work of formation light-emitting diode in the utility model, referring to Fig. 2, serial connection current-limiting resistance R3 is attempted by two ports up and down of fuse base.Rectifier diode D2, green LED LED2, current-limiting resistance R2 are in series, one terminates at the common port of resistance R 1 and resistance R 3, the other end is drawn the other end that is connected to power supply by lead, for guaranteeing the fail safe of this circuit, all contacts adopt the method for welding again of riveted joint earlier, put isolating shrinkable tube at last fully.The utility model produces heat hardly because operating current is extremely low during work; During installation in the fixing hole that respectively to bore a diameter be 3mm, the top and bottom of lower casing of original RT14-20 fuse, red light emitting diodes is installed in the fixedly upper end of lower casing, green LED is installed in the lower end of fixing lower casing and distinguishes with convenient, for guaranteeing to install in the limited space element in the utility model, current-limiting resistance is selected the 1/8W small size for use, for guaranteeing fail safe, current-limiting resistance puts isolating shrinkable tube after installing, and separates with insulation board and original circuit.For guaranteeing the useful life and the fail safe of element, rectifier diode D1, rectifier diode D2 all adopt the above diode of withstand voltage 1KV, the span of current-limiting resistance R1, current-limiting resistance R2 is between 300K Ω-500K Ω, the resistance of current-limiting resistance R3 can adopt 2K Ω, and it is the light-emitting diode of Φ 3mm that red light emitting diodes LED1, green LED LED2 all adopt the high brightness diameter.
When circuit fully just often, as shown in Figure 2, because the short circuit effect of fuse tube FU becomes near 0V the voltage of red light emitting diodes LED1, thereby circuit is ended, red light emitting diodes LED1 is not luminous, and current path becomes: current-limiting resistance R3 → rectifier diode D2 → green LED LED2 → current-limiting resistance R2//load RL is attempted by on the power supply, reach the luminous necessary condition of green LED LED2, green LED LED2 is luminous.
When the fusing of fuse tube FU overload, as shown in Figure 3, fuse tube FU open circuit, current path becomes: rectifier diode D1 → red light emitting diodes LED1 → current-limiting resistance R1 → current-limiting resistance R3 → load RL, because the resistance of current-limiting resistance R3 (resistance is 2K Ω) adds that the resistance of load RL is far smaller than the resistance of current-limiting resistance R2 (resistance is 300K Ω～500K Ω), electric current all forms the loop through current-limiting resistance R3 → load RL → power supply B end, because the resistance of current-limiting resistance R1 is far longer than the resistance that the resistance of current-limiting resistance R3 (resistance is 2K Ω) adds resistance // current-limiting resistance R2 of load RL, most of voltage in the circuit is fallen by current-limiting resistance R1, the undertension at current-limiting resistance R2 two ends is so that green LED LED2 conducting, green LED LED2 is not luminous, only has red light emitting diodes LED1 luminous.
When load RL cisco unity malfunction, as shown in Figure 4, path of current is: power supply A end → fuse tube FU → current-limiting resistance R1 → rectifier diode D2 → green LED LED2 → current-limiting resistance R2 → power supply B end, red light emitting diodes LED1 is not luminous, only has green LED LED2 luminous.
When load RL cisco unity malfunction and fuse tube FU disconnection, as shown in Figure 5, path of current is: power supply A end → rectifier diode D1 → red light emitting diodes LED1 → current-limiting resistance R1 → rectifier diode D2 → green LED LED2 → current-limiting resistance R2 → power supply B end, red light emitting diodes LED1 and green LED LED2 light simultaneously, since load RL open circuit, and no current passes through.
Whether the utility model energy indicating fuse is normal; Whether whole loop is normal; Whether power supply is normal.
Claims (1)
1, but a kind of fuse of indication fault, comprise fixedly lower casing (5), movable upper casing (8), split ring card (1), fuse tube (7), junction block (4), power line (3), it is characterized in that: fixing lower casing (5). in be provided with circuit, circuit comprises the rectifier diode D1 of mutual series connection, red light emitting diodes LED1, current-limiting resistance R1, serial connection current-limiting resistance R3 is attempted by two ports up and down of fuse base, rectifier diode D2, green LED LED2, current-limiting resistance R2 is in series, the rectifier diode D2 that is in series, green LED LED2, one of the series circuit that current-limiting resistance R2 forms terminates at the common port of current-limiting resistance R1 and current-limiting resistance R3, the other end is drawn the other end that is connected to power supply by lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620086801 CN2929952Y (en) | 2006-07-08 | 2006-07-08 | Fuse capable of indicating fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620086801 CN2929952Y (en) | 2006-07-08 | 2006-07-08 | Fuse capable of indicating fault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2929952Y true CN2929952Y (en) | 2007-08-01 |
Family
ID=38308324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620086801 Expired - Fee Related CN2929952Y (en) | 2006-07-08 | 2006-07-08 | Fuse capable of indicating fault |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2929952Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653516A (en) * | 2016-12-09 | 2017-05-10 | 国网山东省电力公司烟台供电公司 | Indicator for drop fuse |
| CN107706988A (en) * | 2017-11-03 | 2018-02-16 | 江苏德力化纤有限公司 | A kind of controller for power UPS series-connected batteries charge and discharge protectings |
| WO2020191651A1 (en) * | 2019-03-27 | 2020-10-01 | Suzhou Littelfuse Ovs Co., Ltd. | Fuse status diagnostic with and without load operability |
-
2006
- 2006-07-08 CN CN 200620086801 patent/CN2929952Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653516A (en) * | 2016-12-09 | 2017-05-10 | 国网山东省电力公司烟台供电公司 | Indicator for drop fuse |
| CN107706988A (en) * | 2017-11-03 | 2018-02-16 | 江苏德力化纤有限公司 | A kind of controller for power UPS series-connected batteries charge and discharge protectings |
| WO2020191651A1 (en) * | 2019-03-27 | 2020-10-01 | Suzhou Littelfuse Ovs Co., Ltd. | Fuse status diagnostic with and without load operability |
| CN113892162A (en) * | 2019-03-27 | 2022-01-04 | 苏州力特奥维斯保险丝有限公司 | Fuse state diagnostics for loaded and unloaded operation |
| CN113892162B (en) * | 2019-03-27 | 2024-02-13 | 苏州力特奥维斯保险丝有限公司 | Fuse state diagnostics for loadability and loadless operability |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7940498B2 (en) | Circuit interrupting device with high voltage surge protection | |
| CN107743321B (en) | Including the LED light for the security module of safety operation on various ballasts | |
| CN100483143C (en) | Magnet coil break detection circuit | |
| US20120170159A1 (en) | Leakage detection protective circuit | |
| CN103454551A (en) | Three-hole power socket fault detector | |
| CN2929952Y (en) | Fuse capable of indicating fault | |
| CN111526633A (en) | Intelligent monitoring filament relay | |
| CN104332961A (en) | Burning proof protection device for switch opening and closing coil | |
| CN203455452U (en) | Breaker overload alarm device | |
| CN201369301Y (en) | Leakage breaker with indication function of many failures | |
| CN201230196Y (en) | Apparatus for monitoring working state of fuse | |
| CN201392792Y (en) | Miniature circuit breaker with working status indicating lamp therein | |
| CN204775062U (en) | Electrical apparatus mount board fusible link indicating device and commercial car for automobile | |
| CN201749170U (en) | Work state indicator for circuit breaker | |
| CN105449655A (en) | Current transformer secondary open circuit protection method and device | |
| CN2877101Y (en) | Control circuit with displaying functions of preventing reverse connecting error and state | |
| CN101833066B (en) | Working state indicator of circuit breaker | |
| CN203275565U (en) | Multifunctional grounding detector | |
| CN202550215U (en) | Supply socket with the function of protection | |
| CN201946966U (en) | Partitioned power supply protection device of communication equipment | |
| CN2877102Y (en) | Socket type grounding fault circuit breaker | |
| CN204719123U (en) | A kind of overvoltage undervoltage detection circuit | |
| CN214335084U (en) | Pilot plug-in unit of intrinsic safety type switch and comprehensive protector testing system | |
| KR101360137B1 (en) | Safety jumper equipment | |
| CN100539344C (en) | When appearring in grounding system, can send abnormal voltage the device of the indication of reporting to the police |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |