CN201898320U - Automatic protector for orbit electrical equipment - Google Patents
Automatic protector for orbit electrical equipment Download PDFInfo
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- CN201898320U CN201898320U CN201120107022XU CN201120107022U CN201898320U CN 201898320 U CN201898320 U CN 201898320U CN 201120107022X U CN201120107022X U CN 201120107022XU CN 201120107022 U CN201120107022 U CN 201120107022U CN 201898320 U CN201898320 U CN 201898320U
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Abstract
The application relates to an automatic protector for orbit electrical equipment, which comprises a branch power module, a relay, an equipment end current detecting module, a power end voltage detecting module, a semiconductor switch, a comparison module and a drive module. The branch power module provides electricity for the branch electrical equipment; the relay is connected with the branch power module; the equipment end current detecting module detects whether the electrical equipment is under an overcurrent state or not, and outputs a first level when the equipment is under the overcurrent state or outputs a second level when the equipment is not under the overcurrent state; the power end voltage detecting module samples a voltage at a branch power end, compares the sampled voltage with a first reference voltage, outputs a third level under non-overcurrent, and outputs a fourth level under overcurrent; the semiconductor switch is connected between the equipment end current detecting module and the power end voltage detecting module; the comparison module is connected with the semiconductor switch and the power end voltage detecting module; and one end of the drive module is connected with the comparison module, and the other end of the drive module is connected with the relay. The automatic protector for the orbit electrical equipment is characterized in that when individual split beams among the parallel split beams of a same electricity power supply are failed, the electric equipment of other split beams is not influenced and can work normally; and the automatic protector for the orbit electrical equipment can resume automatically after the failure is removed.
Description
Technical field
The application relates to a kind of power consumption equipment protective device, relates in particular to a kind of track power consumption equipment automatic safety device
Background technology
Having in China's electric railway above 90% station at present adopts the 25HZ phase-sensitive track circuits with automatic CONTROL RAILWAY SIGNAL; the power module of 25HZ phase-sensitive track circuits is the output of single channel power supply; and power consumption equipment often 2 tunnel, 4 tunnel, 6 road or 8 tunnel; for each beam splitting power consumption equipment is carried out cascade protection, the circuit breaker of connecting in each beam splitting loop usually is to carry out overcurrent protection to power consumption equipment.
The Capacity Selection of railway systems standard TB/T1528 regulation circuit breaker be specified shunt output current 1.5-2 doubly, can select the circuit breaker of different tripping characteristics again according to load characteristic (resistive, perceptual, capacitive etc.).Calculate by 2 times of rated current; the drop-away time of existing circuit breaker product is more than 5 seconds; and the protection speed of 25HZ phase sensitivity track power module is in the 100ms; so when wherein phenomenons such as overcurrent, short circuit appearred in a branch of shunt power consumption equipment, 25HZ phase sensitivity track power module can be protected action prior to circuit breaker.25HZ phase sensitivity track power module protects its output voltage of action back to reduce to make other beam splitting power consumption equipment also can't operate as normal.And circuit breaker must manually restore electricity after getting rid of beam splitting power consumption equipment fault.
The utility model content
Provide hereinafter about brief overview of the present utility model, so that basic comprehension about some aspect of the present utility model is provided.Should be appreciated that this general introduction is not about exhaustive general introduction of the present utility model.It is not that intention is determined key of the present utility model or pith, neither be intended to limit scope of the present utility model.Its purpose only is to provide some notion with the form of simplifying, with this as the preorder in greater detail of argumentation after a while.
A main purpose of the present utility model be to provide a kind of can be to by the multi beam of the same power supply power supply track power consumption equipment automatic safety device protecting and after fault is got rid of, can return to form automatically of the indivedual shunt in the power consumption equipment along separate routes.
According to an aspect of the present utility model, a kind of track power consumption equipment automatic safety device comprises:
The branch supply module, its input is used to receive ac signal, and output is connected to power consumption equipment along separate routes, is used to power consumption equipment power supply along separate routes;
Relay, the input that is connected to the branch supply module stops the shunt power consumption equipment is powered with control branch supply module when being subjected to electricity;
The equipment end current detection module, whether power consumption equipment is in over-current state in order to detect along separate routes to be connected to the shunt power consumption equipment, if power consumption equipment is in over-current state along separate routes, the equipment end current detection module is exported first level signal; If power consumption equipment is not to be in over-current state, the equipment end current detection module is exported second level signal;
The power end voltage detection module, the input that is connected to the branch supply module is sampled in order to the voltage to the input of branch supply module, and with the sampling the voltage and first reference voltage compare, when the shunt power consumption equipment is not in over-current state, the power end voltage detection module is exported three level signal, when the shunt power consumption equipment was in over-current state, the power end voltage detection module was exported the 4th level signal;
Semiconductor switch, be connected between equipment end current detection module and the power end voltage detection module, in order to first or second level signal of receiving equipment end current detection module output and the 3rd or the 4th level signal of power end voltage detection module output, when the shunt power consumption equipment is not in over-current state, the magnitude of voltage of second level signal of equipment end current detection module output is greater than the magnitude of voltage of the three level signal of power end voltage detection module output, and semiconductor switch is in cut-off state; When the shunt power consumption equipment was in over-current state, the magnitude of voltage of first level signal of equipment end current detection module output made semiconductor switch be in conducting state less than the magnitude of voltage of the 4th level signal of power end voltage detection module output;
Comparison module, the input of comparison module are connected to the connected node between semiconductor switch and the power end voltage detection module; And
Driver module, an end of driver module is connected to the output of comparison module, and the other end is connected to relay and is subjected to electric adhesive with the signal control relay according to comparison module output or is not subjected to.
According to an aspect of the present utility model, the branch supply module comprises live wire input, zero line input, live wire output and zero line output, and the live wire input is the input of branch supply module, and the live wire output is the output of branch supply module.
According to an aspect of the present utility model, the equipment end current detection module comprises first inductor, transducer and first comparator, and first inductor is connected to the shunt power consumption equipment to respond to the alternating voltage of this shunt power consumption equipment; Transducer is connected to first inductor and is converted to direct voltage with the alternating voltage with the output of first inductor; First comparator is connected to the direct voltage of transducer with receiving converter output, and direct voltage and the 3rd reference voltage that receives compared, if the voltage that receives is not more than the 3rd reference voltage, first comparator is exported second level signal, if the direct voltage that receives is greater than the 3rd reference voltage, first comparator is exported first level signal.
According to an aspect of the present utility model, first inductor is a current transformer, and the electric current that power consumption equipment produced along separate routes passes the coil of current transformer so that current transformer induction alternating voltage.
According to an aspect of the present utility model, transducer comprises first rectifier and adjuster, first rectifier carries out output dc voltage after the rectification in order to the alternating voltage to current transformer induction, and direct voltage inputs to the input of first comparator after adjuster is adjusted.
According to an aspect of the present utility model, the power end voltage detection module comprises second inductor, amplifier, second rectifier and second comparator; Second inductor is connected to the alternating voltage of the input of branch supply module in order to the input of inductive shunt power module; Amplifier carries out processing and amplifying in order to the alternating voltage to the induction of second inductor; Second rectifier is converted to direct voltage in order to the alternating voltage that amplifies is carried out rectification with the alternating voltage after will amplifying; Described second comparator is connected to described second rectifier to receive the direct voltage of described second rectifier output, and the direct voltage and first reference voltage that receives compared, if the direct voltage that receives is greater than first reference voltage, described second comparator is exported described three level signal; If the direct voltage that receives is not more than described first reference voltage, described second comparator is exported described the 4th level signal.
According to an aspect of the present utility model, second inductor is a voltage transformer, one end on the former limit of voltage transformer is connected to the live wire input of branch supply module, the other end is connected to the zero line input of branch supply module, the alternating voltage that the secondary of voltage transformer is sensed in order to output.
According to an aspect of the present utility model, semiconductor switch is a diode, the output of the negative electrode connection device end current detection module of semiconductor switch, and anode connects the output of power end voltage detection module.
According to an aspect of the present utility model, driver module comprises voltage stabilizing didoe, triode and first diode, the negative electrode of voltage stabilizing didoe connects the output of comparison module, anode connects the base stage of triode, the grounded emitter of triode, the collector electrode of triode connects the anode of first diode, the negative electrode of first diode as the output of driver module to connect relay.
According to an aspect of the present utility model, the input of branch supply module connects the normally-closed contact of relay, be connected with bypass load blocks in parallel between the input of the normally-closed contact of relay and branch supply module, the input of power end voltage detection module is connected to the connected node between relay and the bypass load blocks in parallel.
The utility model detects along separate routes by the equipment end current detection module, and whether power consumption equipment is in over-current state; when overcurrent, control the output state of comparison module by semiconductor switch; make the driver module control relay be subjected to electric adhesive to stop of the power supply of branch supply module automatically to the shunt power consumption equipment; compare the mode of traditional use circuit breaker to the protection of shunt power consumption equipment; can avoid the track power supply to protect earlier and make other power consumption equipments along separate routes also can't operate as normal, the drive circuit automatic control relay is discharged to restore electricity.
Description of drawings
With reference to below in conjunction with the explanation of accompanying drawing, can understand above and other purpose of the present utility model, characteristics and advantage more easily to the utility model embodiment.Parts in the accompanying drawing are just in order to illustrate principle of the present utility model.In the accompanying drawings, same or similar technical characterictic or parts will adopt identical or similar Reference numeral to represent.
Fig. 1 is the module map of a kind of execution mode of the utility model track power consumption equipment automatic safety device.
Fig. 2 is the module map of the another kind of execution mode of the utility model track power consumption equipment automatic safety device.
Fig. 3 is the circuit diagram of the track power consumption equipment automatic safety device among Fig. 1, Fig. 2.
Embodiment
Embodiment of the present utility model is described with reference to the accompanying drawings.Element of describing in an accompanying drawing of the present utility model or a kind of execution mode and feature can combine with element and the feature shown in one or more other accompanying drawing or the execution mode.Should be noted that for purpose clearly, omitted in accompanying drawing and the explanation and the utility model parts irrelevant, that those of ordinary skills are known and the expression and the description of processing.
With reference to figure 1, a kind of execution mode of track power consumption equipment automatic safety device of the present utility model comprises branch supply module 10, relay 20, equipment end current detection module 30, power end voltage detection module 40, semiconductor switch 50, comparison module 60 and driver module 70.
The input of branch supply module 10 is used to receive ac signal, and output is connected to power consumption equipment along separate routes, and being used to along separate routes, power consumption equipment provides operating current.
The input that relay 20 is connected branch supply 10 stops the shunt power consumption equipment is powered with control branch supply module when being subjected to electricity.
Equipment end current detection module 30 is connected to along separate routes, and whether power consumption equipment is in over-current state in order to detect the shunt power consumption equipment.If power consumption equipment is in over-current state along separate routes, then equipment end current detection module 30 is exported first level signal, as low level; If power consumption equipment is not to be in over-current state, then equipment end current detection module 30 is exported second level signal, as high level.
Power end voltage detection module 40 is connected to the input of branch supply module 10 in order to the voltage of branch supply module 10 inputs is sampled, and with the sampling the voltage and first reference voltage compare, if the voltage of sampling is greater than first reference voltage, power end voltage detection module 40 output three level signals, as high level, if the voltage of sampling is not more than first reference voltage, power end voltage detection module 40 outputs the 4th level signal is as low level.
The input of comparison module 60 is connected to the connected node between semiconductor switch 50 and the power end voltage detection module 40, and output is connected to driver module 70.
With reference to figure 2 and Fig. 3, Fig. 2 is the module map of the another kind of execution mode of the utility model track power consumption equipment automatic safety device, and Fig. 3 is the circuit diagram of the track power consumption equipment automatic safety device among Fig. 1, Fig. 2.Above-mentioned first, second reference voltage is respectively the first reference voltage VREF1, the second reference voltage VREF2 among Fig. 3.
Alternatively, branch supply module 10 comprises live wire input IN-L, zero line input IN-N, live wire output OUT-L and zero line output OUT-N, live wire input IN-L is the input of branch supply module 10, and live wire output OUT-L is the output of branch supply module 10.
Alternatively, equipment end current detection module 30 comprises first inductor, transducer and the first comparator U1.First inductor is connected to the shunt power consumption equipment to respond to the alternating voltage of this shunt power consumption equipment end.Transducer is connected to first inductor and is converted to direct voltage with the alternating voltage with the output of first inductor.Comparator U1 is connected to the direct voltage of transducer with receiving converter output, and direct voltage and the 3rd reference voltage VREF3 that receives compared, if the voltage that receives is not more than the 3rd reference voltage VREF3, comparator U1 exports second level signal, i.e. high level; If the direct voltage that receives illustrates that greater than the 3rd reference voltage VREF3 this shunt power consumption equipment is in over-current state, comparator U1 exports first level signal, i.e. low level.
Alternatively, first inductor is current transformer IT1.The electric current that power consumption equipment produced along separate routes passes the coil of voltage transformer IT1 so that current transformer IT1 induction alternating voltage.
Alternatively, transducer comprises first rectifier and adjuster.
Alternatively, first rectifier is the full bridge rectifier of being made up of diode D1, D2, D3 and D4.Adjuster comprises resistance R 1-R5, slide rheostat W1, reaches capacitor C 1, C2.The plus earth of diode D1, D3 hinders the input that is connected to comparator U1 by electric R3, the R5 that is connected in series after the negative electrode of diode D2, D4 links to each other.Resistance R 1 is connected between the negative electrode of the negative electrode of diode D1 and diode D3.One end of resistance R 2 connects the negative electrode of diode D2, D4, other end ground connection.Resistance R 4 and slide rheostat W1 are connected in series between the negative electrode and ground of diode D2, D4.Capacitor C 1, C2 are connected in parallel between the negative electrode and ground of diode D2, D4.First rectifier carries out output dc voltage after the rectification in order to the alternating voltage to voltage transformer IT1 induction, and this direct voltage carries out inputing to after the adjustment such as filtering the input of comparator U1 through adjuster.
Alternatively, comparator U1 comprises normal phase input end, inverting input and output, and normal phase input end is used to receive the 3rd reference voltage VREF3, and inverting input is the input of device U1 as a comparison, is used for receiving through the adjusted direct voltage of adjuster.The output of comparator U1 is as the output of equipment end current detection module 30, when the direct voltage after the rectification during greater than the 3rd reference voltage VREF3, illustrates that power consumption equipment is in over-current state along separate routes, and comparator U1 exports first level signal, i.e. low level.
Alternatively, equipment end current detection module 30 also comprises voltage stabilizing didoe Z1, and the negative electrode of voltage stabilizing didoe Z1 connects the input of comparator U1, plus earth.
Alternatively, power end voltage detection module 40 comprises second inductor, amplifier A1, second rectifier and comparator U2.Second inductor is connected to the alternating voltage of the input of branch supply module 10 in order to the input of inductive shunt power module 10.Amplifier A1 carries out processing and amplifying in order to the alternating voltage to the induction of second inductor.Second rectifier is converted to direct voltage in order to the alternating voltage that amplifies is carried out rectification with the alternating voltage after will amplifying.Comparator U2 is connected to second rectifier to receive the direct voltage of second rectifier output, and the direct voltage and the first reference voltage VREF1 that receives compared, if the direct voltage that receives is greater than first reference voltage, comparator U2 exports three level signal, i.e. high level; If the direct voltage that receives is not more than the first reference voltage VREF1, comparator is exported the 4th level signal, i.e. low level.
Alternatively, second inductor is voltage transformer IT2, one end on the former limit of voltage transformer IT2 is connected to the live wire input IN-L of branch supply module 10, and the other end is connected to the zero line input IN-N of branch supply module 10 through two current-limiting resistances that are connected in parallel.The alternating voltage that the secondary of voltage transformer IT2 is sensed in order to output.
Alternatively, the input of amplifier A1 is connected to the secondary of voltage transformer IT2 to receive its alternating voltage of sensing and the alternating voltage that receives is amplified.
Alternatively, comparator U2 comprises normal phase input end, inverting input and output.
Alternatively, second rectifier comprises that the anode of the first diode D5 and capacitor C 3, the first diode D5 connects the output of amplifier A1, and negative electrode connects the normal phase input end of comparator U2 by resistance.Capacitor C 3 is connected in series between the negative electrode and ground of the first diode D5.Second rectifier is used for the direct voltage after amplifying is carried out exporting to after the rectification normal phase input end of comparator U2.The inverting input of comparator U2 is used to receive the first reference voltage VREF1, and the output of comparator U3 is as the output of power end voltage detection module 40.When the direct voltage of comparator U2 normal phase input end during greater than the first reference voltage VREF1, comparator U2 exports three level signal, i.e. high level, otherwise, export the 4th level signal, i.e. low level.
Alternatively, semiconductor switch 50 comprises diode D6, the output of the negative electrode connection device end current detection module 30 of diode D6, and anode connects the output of power end voltage detection module 40.
Alternatively, comparison module 60 comprises comparator U3, comparator U3 comprises the normal phase input end that receives the second reference voltage VREF2, connects the inverting input and the output of power end voltage detection module 40 outputs by resistance, and the output of comparator A3 is the output of comparison module 60.When the shunt power consumption equipment was not in over-current state, the inverting input of comparator A3 received three level signal, and promptly high level makes comparator A3 export the 5th level signal, i.e. low level.When the shunt power consumption equipment was in over-current state, comparator U1 exported first level signal, i.e. low level makes semiconductor switch 50 conductings, is low level so that comparator U2 output is forced to draw, and makes comparator U3 export the 6th level signal, i.e. high level.
Alternatively, driver module 70 comprises voltage stabilizing didoe Z2, triode Q1 and diode D7, the negative electrode of voltage stabilizing didoe Z2 connects the output of comparison module 60 by resistance, anode connects the base stage of triode Q1, the grounded emitter of triode Q1, collector electrode connects the anode of diode D7, and the negative electrode of diode D7 connects an end and the DC power supply VCC of the coil of relay 20 as the output of driver module 70.The other end of the coil of relay 20 connects the live wire input IN-L of branch supply module 10.When comparator A3 exports the 5th level signal, promptly during low level, voltage stabilizing didoe Z2 ends, and triode Q1 ends, and diode D7 ends, and relay is not subjected to.When comparator A3 exports the 6th level signal, promptly during high level, voltage stabilizing didoe Z2, triode Q1 and the equal conducting of diode D7, relay 20 is subjected to electric adhesive.
Alternatively, the input of branch supply module 10 connects the normally-closed contact of relay 20, be connected with bypass load blocks 80 in parallel between the input of the normally-closed contact of relay 20 and branch supply module 10, the input of power end voltage detection module 40 is connected to the connected node between relay 20 and the bypass load blocks 80 in parallel, when relay 20 is subjected to electric adhesive, bypass load blocks 80 in parallel is connected on carries out dividing potential drop to reduce the voltage of power end voltage detection module 40 samplings between branch supply module 10 and the power end voltage detection module 40, keep comparison module 60 and be output as the 6th level signal, make relay 20 maintain and be subjected to electric attracting state, because relay 20 obtains the lower voltage of keeping, make drive circuit 70 to discharge to recover ortho states by quick control relay 50.
Alternatively, bypass load blocks 80 in parallel comprises resistance R 6-R9, and resistance R 6-R9 is connected in parallel between the live wire input IN-L of the normally-closed contact of relay 20 and branch supply module 10.
Embodiment of the present utility model detects along separate routes by equipment end current detection module 30, and whether power consumption equipment is in over-current state; when overcurrent, control the output state of comparison modules 60 by semiconductor switch 50; make driver module 70 control relays 20 be subjected to electric adhesive to stop 10 pairs of power supplies of power consumption equipment along separate routes of branch supply module automatically; compare the mode of traditional use circuit breaker to the protection of shunt power consumption equipment; can avoid the track power supply to protect earlier and make other power consumption equipments along separate routes also can't operate as normal, drive circuit 70 automatic control relays 20 are discharged to restore electricity.
In equipment of the present utility model, obviously, each parts reconfigures after can decomposing, make up and/or decomposing.These decomposition and/or reconfigure and to be considered as equivalents of the present utility model.Simultaneously, in the above in the description to the utility model specific embodiment, can in one or more other execution mode, use in identical or similar mode at the feature that a kind of execution mode is described and/or illustrated, combined with the feature in other execution mode, or the feature in alternative other execution mode.
Claims (10)
1. a track power consumption equipment automatic safety device is characterized in that, comprising:
The branch supply module, the input of described branch supply module is used to receive ac signal, and output is connected to power consumption equipment along separate routes, is used to power consumption equipment power supply along separate routes;
Relay, the input that is connected to described branch supply module stops the shunt power consumption equipment is powered to control described branch supply module when being subjected to electricity;
The equipment end current detection module, whether power consumption equipment is in over-current state in order to detect along separate routes to be connected to the shunt power consumption equipment, if power consumption equipment is in over-current state along separate routes, the equipment end current detection module is exported first level signal; If power consumption equipment is not to be in over-current state, the equipment end current detection module is exported second level signal;
The power end voltage detection module, the input that is connected to described branch supply module is sampled in order to the voltage to the input of described branch supply module, and with the sampling the voltage and first reference voltage compare, when the voltage of sampling during greater than first reference voltage, described power end voltage detection module is exported three level signal, when the voltage of sampling was not more than first reference voltage, the power end voltage detection module was exported the 4th level signal;
Semiconductor switch, be connected between described equipment end current detection module and the power end voltage detection module, in order to first or second level signal that receives the output of described equipment end current detection module and the 3rd or the 4th level signal of described power end voltage detection module output, when the shunt power consumption equipment is not in over-current state, the magnitude of voltage of second level signal of described equipment end current detection module output is greater than the magnitude of voltage of the three level signal of described power end voltage detection module output, and described semiconductor switch is in cut-off state; When the shunt power consumption equipment was in over-current state, the magnitude of voltage of first level signal of described equipment end current detection module output made semiconductor switch be in conducting state less than the magnitude of voltage of the 4th level signal of described power end voltage detection module output;
Comparison module, the input of described comparison module are connected to the connected node between described semiconductor switch and the described power end voltage detection module; And
Driver module, an end of described driver module is connected to the output of described comparison module, and the other end is connected to relay and is subjected to electric adhesive with the signal control relay according to the output of described comparison module or is not subjected to.
2. track power consumption equipment automatic safety device as claimed in claim 1; it is characterized in that; described branch supply module comprises live wire input, zero line input, live wire output and zero line output; described live wire input is the input of described branch supply module, and described live wire output is the output of described branch supply module.
3. track power consumption equipment automatic safety device as claimed in claim 1, it is characterized in that, described equipment end current detection module comprises first inductor, transducer and first comparator, and described first inductor is connected to the shunt power consumption equipment to respond to the alternating voltage of this shunt power consumption equipment; Described transducer is connected to described first inductor and is converted to direct voltage with the alternating voltage with described first inductor output; Described first comparator is connected to described transducer to receive the direct voltage of described transducer output, and direct voltage and the 3rd reference voltage that receives compared, if the voltage that receives is not more than described the 3rd reference voltage, described first comparator is exported described second level signal, if the direct voltage that receives is greater than described the 3rd reference voltage, described first comparator is exported described first level signal.
4. track power consumption equipment automatic safety device as claimed in claim 3; it is characterized in that; described first inductor is a current transformer, and the electric current that described shunt power consumption equipment is produced passes the coil of described current transformer so that described current transformer induction alternating voltage.
5. track power consumption equipment automatic safety device as claimed in claim 3; it is characterized in that; described transducer comprises first rectifier and adjuster; described first rectifier carries out exporting described direct voltage after the rectification in order to the alternating voltage to described current transformer induction, and described direct voltage inputs to the input of described first comparator after the adjuster adjustment.
6. track power consumption equipment automatic safety device as claimed in claim 1 is characterized in that described power end voltage detection module comprises second inductor, amplifier, second rectifier and second comparator; The input that described second inductor is connected to described branch supply module is in order to the alternating voltage of the input of responding to described branch supply module; Described amplifier carries out processing and amplifying in order to the alternating voltage to described second inductor induction; Described second rectifier is converted to direct voltage in order to the alternating voltage that amplifies is carried out rectification with the alternating voltage after will amplifying; Described second comparator is connected to described second rectifier to receive the direct voltage of described second rectifier output, and the direct voltage and first reference voltage that receives compared, if the direct voltage that receives is greater than first reference voltage, described second comparator is exported described three level signal; If the direct voltage that receives is not more than described first reference voltage, described second comparator is exported described the 4th level signal.
7. track power consumption equipment automatic safety device as claimed in claim 6; it is characterized in that; described second inductor is a voltage transformer; one end on the former limit of described voltage transformer is connected to the live wire input of described branch supply module; the other end is connected to the zero line input of described branch supply module, the alternating voltage that the secondary of described voltage transformer is sensed in order to output.
8. track power consumption equipment automatic safety device as claimed in claim 1; it is characterized in that; described semiconductor switch is a diode, and the negative electrode of described semiconductor switch connects the output of described equipment end current detection module, and anode connects the output of described power end voltage detection module.
9. track power consumption equipment automatic safety device as claimed in claim 1; it is characterized in that; described driver module comprises voltage stabilizing didoe, triode and first diode; the negative electrode of described voltage stabilizing didoe connects the output of described comparison module; anode connects the base stage of described triode; the grounded emitter of described triode; the collector electrode of described triode connects the anode of described first diode, the negative electrode of described first diode as the output of described driver module to connect described relay.
10. track power consumption equipment automatic safety device as claimed in claim 1; it is characterized in that; the input of described branch supply module connects the normally-closed contact of described relay; be connected with bypass load blocks in parallel between the input of the normally-closed contact of described relay and described branch supply module, the input of described power end voltage detection module is connected to the connected node between described relay and the described bypass load blocks in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120107022XU CN201898320U (en) | 2011-04-13 | 2011-04-13 | Automatic protector for orbit electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120107022XU CN201898320U (en) | 2011-04-13 | 2011-04-13 | Automatic protector for orbit electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201898320U true CN201898320U (en) | 2011-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120107022XU Expired - Fee Related CN201898320U (en) | 2011-04-13 | 2011-04-13 | Automatic protector for orbit electrical equipment |
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| Country | Link |
|---|---|
| CN (1) | CN201898320U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916387A (en) * | 2012-10-31 | 2013-02-06 | 深圳市虹远通信有限责任公司 | Protection circuit for multi-port POE (power over Ethernet) power supply output shunt |
| CN109859988A (en) * | 2017-11-30 | 2019-06-07 | 株洲中车时代电气股份有限公司 | A kind of control relay circuit |
-
2011
- 2011-04-13 CN CN201120107022XU patent/CN201898320U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916387A (en) * | 2012-10-31 | 2013-02-06 | 深圳市虹远通信有限责任公司 | Protection circuit for multi-port POE (power over Ethernet) power supply output shunt |
| CN102916387B (en) * | 2012-10-31 | 2016-01-20 | 深圳市虹远通信有限责任公司 | A kind of protective circuit exporting shunt for many mouthfuls of POE chargers |
| CN109859988A (en) * | 2017-11-30 | 2019-06-07 | 株洲中车时代电气股份有限公司 | A kind of control relay circuit |
| CN109859988B (en) * | 2017-11-30 | 2020-05-08 | 株洲中车时代电气股份有限公司 | Relay control circuit |
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