CN205104778U - Safety power distribution cabinet - Google Patents
Safety power distribution cabinet Download PDFInfo
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- CN205104778U CN205104778U CN201520771025.1U CN201520771025U CN205104778U CN 205104778 U CN205104778 U CN 205104778U CN 201520771025 U CN201520771025 U CN 201520771025U CN 205104778 U CN205104778 U CN 205104778U
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- 239000010410 layer Substances 0.000 claims description 12
- 238000009423 ventilation Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 206010014357 Electric shock Diseases 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000256626 Pterygota <winged insects> Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a safety power distribution cabinet, include the opening box that constitutes by roof, bottom plate, posterior lateral plate, left side board and right side board, and follow ahead frame and qianmen that the opening box formed, the qianmen includes left side door and right side door, the higher authority of roof still includes the one deck top cap, the bottom of top cap is the plane, and top center is protruding, the switch board still is equipped with the safety circuit device, the safety circuit device includes protection against electric shock circuit and lightning protection supply circuit the opening box that constitutes by roof, bottom plate, posterior lateral plate, left side board and right side board, and follow ahead frame and qianmen that the opening box formed, the qianmen includes left side door and right side door, the higher authority of roof still includes the one deck top cap, the bottom of top cap is the plane, and top center is protruding, the switch board still is equipped with the safety circuit device, the safety circuit device includes protection against electric shock circuit and lightning protection supply circuit. The utility model discloses the purpose of protection operating personnel personal safety can be reached, the emergence of electric shock accidents is avoided.
Description
Technical field
The utility model relates to a kind of safety distribution cabinet.
Background technology
Electric control system is connected to form according to certain requirement by motor and some electric components, to complete the system that production process controls specific function.In order to the composition and working principle of Expression product mechanical electric control system, also be convenient to the installation of equipment simultaneously, debugging and maintenance, and electric component each in system and annexation are reflected with certain pattern, pattern represents each electric component with the graphic symbol of regulation, and with letter symbol, each electric component is described, electrical principle graph structure is simple, well arranged, be applicable to research and analysis circuit working principle, and can be trouble-shooting and offer help, also be the foundation of establishment electrical install winding diagram simultaneously, therefore be used widely in design department and production scene, and power distribution cabinet has often just become very important carrier, each electric elements that can meet in circuit design are reliably fixed on the position determined in cabinet, handled easily personnel carry out operating and checking, but, in existing production, there will be the situation of equipment fault or Production requirement change and so on unavoidably, operating personnel are sometimes just needed to carry out inspection operation when controller switching equipment is in electriferous state, so, just there is the danger of certain degree in the personal safety of operating personnel.
Summary of the invention
For the problems referred to above, the utility model provides a kind of safety distribution cabinet.
For achieving the above object, the technical scheme of this A Yong of the utility model is: safety distribution cabinet, comprise by top board, base plate, back side panel, the opening casing that left plate and right plate are formed, and the front bezel to become along described open box shape and Qianmen, described Qianmen comprises offside door and offside door, one deck top cover is also comprised above described top board, the bottom of described top cover is plane, center of top is projection, described power distribution cabinet is also provided with safety circuit device, described safety circuit device comprises protection against electric shock circuit and lightning protection power supply circuits, wherein, described protection against electric shock circuit comprises the protective device be connected with distribution box, current sensor is provided with in distribution box, filter is provided with in protective device, filter on the one hand successively with the first amplifier, relay is connected, filter on the other hand successively with the second amplifier, warning device is connected, described relay is also connected with power supply, described lightning protection power supply circuits comprise: lightning protection circuit, indicating equipment and output unit, wherein, the input of described lightning protection circuit is connected with power supply, the output of described lightning protection circuit is connected with output unit, for eliminating the lightning surge voltage entered by power-supply system, the first order vent unit, second level choke unit and the third level clamping unit that are connected successively is comprised in described lightning protection circuit, described indicating equipment is connected with lightning protection circuit, for each phase current in described lightning protection circuit Nei Mei road, voltage being shown, the output of described output unit is connected with equipment to be protected, for powering to equipment to be protected.
Further, be also provided with in described casing:
Humidity sensor, is arranged in described casing to detect the real-time humidity of the inside of described casing;
Comparator, is connected with described humidity sensor with more described real-time humidity and default humidity;
Dehumidifier, is connected with described comparator, to dehumidify when described real-time humidity is greater than described default humidity.
Further, described left plate and/or described right plate include ventilation hole, and described ventilation hole includes filter.
Further, described box house is provided with lighting device, and described lighting device comprises at least one lamp body and a push switch, and lamp body is connected with push switch.
Further, be provided with the through hole for threading and insulation cushion, it is characterized in that below described casing, an earth connection is set up in the bottom of described casing, and described earth connection is connected to described bottom half, is used for the electrostatic on distribution box being imported in time ground release.
Further, described earth connection has been set up a unilateral diode, the positive terminal of described unilateral diode is connected with distribution enclosure box.
Further, described casing is followed successively by internal layer, middle level and skin from inside to outside, described internal layer is from inside to outside for being respectively equipped with radiation protective layer and sealant, described middle level is the double-decker of leakproof electric layer and fireprotection layer composition, skin is high-strength insulating armour, and described casing outside is also provided with insulation antidetonation frame.
Further, described casing is provided with Intelligent indicating device, and described Intelligent indicating device comprises:
Switch, indicating device and warning device, wherein,
Described switch, for starting or stoping described indicating device;
Described indicating device, is connected with described switch, after starting at described indicating device, indicate power equipment to be in electriferous state;
Described warning device, is connected with described switch, comprises: heat sensor, alarm distance adjusting device and alarm, wherein,
Described alarm distance adjusting device, for arranging alarm distance;
Described heat sensor, for detecting the distance of thermal source and described power equipment;
Described alarm, is connected between described heat sensor and described alarm distance adjusting device, for when the distance of thermal source and described power equipment is less than described alarm distance, sends the alarm of described charged electric power apparatus.
Further, the area of described cap base is greater than the area of described top board, the top that described top cover is triangular in shape.
Beneficial effect:
Compared with existing correlation technique, the technical program has following beneficial effect:
The utility model utilizes the safety circuit device be arranged in cabinet; the lightning surge voltage entered by power-supply system is carried out three grades of eliminations through first order vent unit, second level choke unit and third level clamping unit by lightning protection supply access, and then lightning surge voltage can be avoided to cause damage by power-supply system to equipment to be protected.
In addition; straight-through power supply circuits and commutation circuit is also provided with in this lightning protection power distribution cabinet; when few thunderstorm season (such as winter), lightning protection circuit fault, maintenance or when maintaining; commutation circuit can by straight-through power supply circuits conducting; and disconnected by lightning protection power supply circuits, and then when can be implemented in maintenance, do not interrupt the power supply of equipment to be protected.
The utility model by arranging current sensor in power distribution cabinet; when human body touches current sensor time; signal is reached the filter in protective device by current sensor; signal is divided into two-way after filter; one tunnel is after the first amplifier amplifies; arrive another road of relay and arrive warning device after the second amplifier amplifies; relay makes power cut-off after receiving signal; alarm is reported to the police after receiving signal; so just reach the object of protection operating personnel life safety, avoid the generation of electric shock accidents.
Accompanying drawing explanation
Fig. 1 is the structural representation of safety distribution cabinet;
Fig. 2 is the front view of safety distribution cabinet;
Fig. 3 is the structural representation of the safety circuit device of safety distribution cabinet.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
Embodiment 1
As shown in Figures 1 to 3, the present embodiment safety distribution cabinet, comprise the opening casing be made up of top board, base plate, back side panel, left plate and right plate, opening box-shaped constitutes power distribution cabinet for arranging the space of each power distribution equipment, and corresponding switch and circuit are correspondingly arranged in this space.In the present embodiment, become to have front bezel 23 along described open box shape, the aforesaid definition of power distribution cabinet is gone out the position for installing Qianmen 2 by front bezel 23, and follow-up Qianmen is arranged over these locations.In the present embodiment, described Qianmen comprises offside door 21 and offside door 22, carrys out folding power distribution cabinet by two side doors.Wherein any Yishanmen can open and close individually.Power distribution cabinet is the complete sets of equipment installing the equipment such as switch, instrument concentratedly.Applying power distribution cabinet of the present invention can make power supply be convenient to management, is conducive to maintenance when circuit for generating fault.
It should be noted that, in the present embodiment, on described top board, also comprise one deck top cover, the bottom of described top cover is plane, and the area of cap base is greater than the area of top board, namely pushes up and cover on top board as cap, and all stretched out a part of area than one week of top board.And the center of top of top cover is denation.The top of this shape makes to drench when power distribution cabinet is watered by rainwater etc., and water can drip along the edge of top cover, and can not fall each side at power distribution cabinet all around, and like this, also just protecting power distribution cabinet is not soaked in water, and avoids the circuit arrangement in case leak electricity or burn out.
In the present embodiment, have at least a side plate to include ventilation hole 41 in the described left plate of power distribution cabinet and described right plate, right plate 4 includes a ventilation hole 41.Ventilation hole 41 contributes to heat radiation, the temperature of power distribution cabinet is remained in normal operating temperature range, improves the working life of power distribution cabinet.Described ventilation hole 41 inside of the present embodiment also includes filter.Filter blocks described ventilation hole 41, and make while heat radiation, dust and winged insect etc. do not enter in power distribution cabinet, plays the effect of protection power distribution cabinet.In the power distribution cabinet of the present embodiment, described base plate 3 includes one and prolongs limit 31, described prolonging on limit 31 includes screw 311, this prolong limit 31 be laid immediately on ground, like this, the screw 311 prolonged on limit 31 is also directly on the ground, can locking on the ground by prolonging limit 31, also just being fixed on the ground by whole power distribution cabinet by screw or spiral shell select.
Power distribution cabinet 1 is uppermost is top cover, and top board is between power distribution cabinet side plate and top cover, so not display.So be Qianmen below top cover, Qianmen comprises front bezel 23, front bezel 23 includes offside door 21 and offside door 22, their common folding power distribution cabinets.And be base plate at power distribution cabinet bottommost, further, base plate 3 to the left and right both sides extends limit 31, prolongs limit 31 level, and thus it directly can be placed in ground, increases the contact area on power distribution cabinet and ground.The power distribution cabinet each several part symmetrically structure of the present embodiment, and design rule is reasonable, and structure is simple.
The present embodiment safety distribution cabinet, described power distribution cabinet is also provided with safety circuit device, described safety circuit device comprises protection against electric shock circuit and lightning protection power supply circuits, wherein, described protection against electric shock circuit comprises the protective device 7 be connected with distribution box 1, transducer 8 is provided with in power distribution cabinet 1, filter 2 is provided with in protective device 7, filter 2 one aspect successively with the first amplifier 3, relay 4 is connected, filter 2 on the other hand successively with the second amplifier 10, warning device 6 is connected, relay 4 is also connected with power supply 5, transducer 8 is current sensor, transducer 8 is connected with filter 2, buzzer 9 is provided with in warning device 6.
The present embodiment is not when equipment decommissions, when equipment go wrong need operating personnel to overhaul or check time, when operating personnel operate in power distribution cabinet 1, if now which apparatus surface is charged, then transducer 8 will receive current signal, current signal is sent to the filter 2 in protective device 7 by transducer 8, signal after filtering after device 2 filtration treatment, one tunnel can arrive the first amplifier 3, smaller current signal can be converted into larger current signal by the first amplifier 3, reach relay 4, warning device 6 is arrived through the second amplifier 10 from filter 2 another road signal out, current signal arrives power supply 5 after relay 4, cut off the electricity supply 5, meanwhile, buzzer 9 in warning device 6 sounds the alarm, remind device surface charging in operating personnel's cabinet, avoid causing Danger Electric shock risk.
Lightning protection power supply circuits comprise: lightning protection circuit 11, indicating circuit 14 and output circuit 13, wherein, the input of described lightning protection circuit is connected with power-supply system, and the output of described lightning protection circuit is connected with output circuit, for eliminating the lightning surge voltage entered by power-supply system.
Comprise in this lightning protection circuit: first order leadage circuit, second level choked flow circuit and third level clamp circuit, wherein, first order leadage circuit, second level choked flow circuit and third level clamp circuit three are electrically connected successively, to realize carrying out three grades of protection to thunderbolt voltage surge.
When protecting thunder and lightning, in first order leadage circuit, preset voltage threshold, when external voltage exceedes this voltage threshold, in first order leadage circuit release element can in 25ns instantaneous thunder-strike current of releasing over the ground; The circuit of second level choked flow simultaneously continues through for stoping thunder-strike current; Last third level clamping unit passes through for limiting too high lightning surge voltage, and is clamped in safety value by output voltage.
The output of described output circuit is connected with equipment to be protected 13, for powering to equipment to be protected.In addition, these lightning protection power supply circuits can also normal power supply while carrying out lightning Protection.
In addition, conveniently operating personnel understand the operating state in lightning protection circuit, and can also arrange in this lightning protection circuit: indicating circuit, indicating circuit is connected with lightning protection circuit, for each phase current in described lightning protection circuit Nei Mei road, voltage being shown.
In order to increase the lightning protection properties of this safety distribution cabinet; the ground wire of lightning protection circuit can also be connected with the system ground wire of equipment to be protected; namely make the ground wire of lightning protection circuit and the system ground wire of equipment to be protected carry out equipotential link, the electric power system of all equipments to be protected is on same foundation current potential.
The present embodiment utilizes the lightning protection supply access be arranged in casing; the lightning surge voltage entered by power-supply system is carried out three grades of eliminations through first order vent unit, second level choke unit and third level clamping unit, and then lightning surge voltage can be avoided to cause damage by power-supply system to equipment to be protected.
Embodiment 2
The present embodiment safety distribution cabinet, on the basis of embodiment 1, add an earth connection in the bottom of casing, described earth connection is connected to the bottom half of distribution box, is used for the electrostatic on distribution box being imported in time ground release.Owing to there being many charged electric wires bottom distribution box, oppositely pass to the casing of distribution box from connect earth connection to overcome electric current when part electric wire leaks electricity, produce Danger Electric shock risk, the present invention has also set up a diode on ground path, the positive terminal of this diode is connected with distribution box body, when accumulation on distribution box body has electrostatic charge, and diode current flow, electrostatic charge is conducted to ground connection place, decreases the harm of electrostatic to human body; Make use of the one way general character energy that diode has simultaneously, stopped ground line current reverse flow above distribution box shell, completely eliminated the electric shock accidents caused because earth connection is charged.
Embodiment 3
The present embodiment safety distribution cabinet, on the basis of embodiment 1, is also provided with in described casing:
Humidity sensor, is arranged in described casing to detect the real-time humidity of the inside of described casing;
Comparator, is connected with described humidity sensor with more described real-time humidity and default humidity;
Dehumidifier, is connected with described comparator, to dehumidify when described real-time humidity is greater than described default humidity.
Humidity sensor is arranged in casing, can detect the real-time humidity of the inside of casing.Comparator is connected with humidity sensor, and the signal of the real-time humidity in the casing detected is issued comparator by humidity sensor, and the real-time humidity in the casing detected by humidity sensor in a comparator and default humidity compare.When real-time humidity is greater than default humidity, comparator sends dehumidifying signal.Dehumidifier is connected with comparator, dehumidifies when dehumidifier receives dehumidifying signal.Said structure adopts the air humidity in automatic control box body, effectively regulates the air humidity of the inside of casing, and then effectively ensures the safe operation of controller switching equipment, improves the reliability of power supply, ensures that the people can not be subject to economic loss.Meanwhile, said structure adopts the mode automatically controlled to replace manually operated mode, effectively ensures that operations staff can not come to harm, effectively reduces the working strength of operations staff.
In the various embodiments described above, described box house is provided with lighting device, and described lighting device comprises at least one lamp body and a push switch, and lamp body is connected with push switch.Owing to adopting technique scheme, staff carries out the operations such as installation, maintenance during to distribution box inner facility, in distribution box, daylighting is good, without the need to carrying additional light source, more convenient to operate; There is structure simple, easy to maintenance, the advantages such as processing cost is low.
In the various embodiments described above, the chamber door back side is provided with the interlayer of the above-below direction parallel with chamber door, and this interlayer and chamber door form the sandwich passage of above-below direction, and the upper port of described sandwich passage is provided with blower fan, and this fan outlet is connected in series with the upper port of described sandwich passage.
In the various embodiments described above, described casing is followed successively by internal layer, middle level and skin from inside to outside, described internal layer is from inside to outside for being respectively equipped with radiation protective layer and sealant, described middle level is the double-decker of leakproof electric layer and fireprotection layer composition, skin is high-strength insulating armour, and described chamber door outside is also provided with insulation antidetonation frame.
In the various embodiments described above, be provided with Intelligent indicating device in described case, described Intelligent indicating device comprises:
Switch, indicating device and warning device, wherein,
Described switch, for starting or stoping described indicating device;
Described indicating device, is connected with described switch, after starting at described indicating device, indicate power equipment to be in electriferous state;
Described warning device, is connected with described switch, comprises: heat sensor, alarm distance adjusting device and alarm, wherein,
Described alarm distance adjusting device, for arranging alarm distance;
Described heat sensor, for detecting the distance of thermal source and described power equipment;
Described alarm, is connected between described heat sensor and described alarm distance adjusting device, for when the distance of thermal source and described power equipment is less than described alarm distance, sends the alarm of described charged electric power apparatus.
Claims (9)
1. a safety distribution cabinet, it is characterized in that: comprise by top board, base plate, back side panel, the opening casing that left plate and right plate are formed, and the front bezel to become along described open box shape and Qianmen, described Qianmen comprises offside door and offside door, one deck top cover is also comprised above described top board, the bottom of described top cover is plane, center of top is projection, described power distribution cabinet is also provided with safety circuit device, described safety circuit device comprises protection against electric shock circuit and lightning protection power supply circuits, wherein, described protection against electric shock circuit comprises the protective device be connected with distribution box, current sensor is provided with in distribution box, filter is provided with in protective device, filter on the one hand successively with the first amplifier, relay is connected, filter on the other hand successively with the second amplifier, warning device is connected, described relay is also connected with power supply, described lightning protection power supply circuits comprise: lightning protection circuit, indicating equipment and output unit, wherein, the input of described lightning protection circuit is connected with power supply, the output of described lightning protection circuit is connected with output unit, for eliminating the lightning surge voltage entered by power-supply system, the first order vent unit, second level choke unit and the third level clamping unit that are connected successively is comprised in described lightning protection circuit, described indicating equipment is connected with lightning protection circuit, for each phase current in described lightning protection circuit Nei Mei road, voltage being shown, the output of described output unit is connected with equipment to be protected, for powering to equipment to be protected.
2. safety distribution cabinet according to claim 1, is characterized in that: be also provided with in described casing:
Humidity sensor, is arranged in described casing to detect the real-time humidity of the inside of described casing;
Comparator, is connected with described humidity sensor with more described real-time humidity and default humidity;
Dehumidifier, is connected with described comparator, to dehumidify when described real-time humidity is greater than described default humidity.
3. safety distribution cabinet according to claim 1, is characterized in that: described left plate and/or described right plate include ventilation hole, and described ventilation hole includes filter.
4. safety distribution cabinet according to claim 1, is characterized in that: described box house is provided with lighting device, and described lighting device comprises at least one lamp body and a push switch, and lamp body is connected with push switch.
5. safety distribution cabinet according to claim 1, it is characterized in that: below described casing, be provided with the through hole for threading and insulation cushion, it is characterized in that, an earth connection is set up in the bottom of described casing, described earth connection is connected to described bottom half, is used for the electrostatic on distribution box being imported in time ground release.
6. safety distribution cabinet according to claim 5, is characterized in that: described earth connection has been set up a unilateral diode, the positive terminal of described unilateral diode is connected with distribution enclosure box.
7. safety distribution cabinet according to claim 1, it is characterized in that: described casing is followed successively by internal layer, middle level and skin from inside to outside, described internal layer is from inside to outside for being respectively equipped with radiation protective layer and sealant, described middle level is the double-decker of leakproof electric layer and fireprotection layer composition, skin is high-strength insulating armour, and described casing outside is also provided with insulation antidetonation frame.
8. safety distribution cabinet according to claim 1, is characterized in that: described casing is provided with Intelligent indicating device, and described Intelligent indicating device comprises:
Switch, indicating device and warning device, wherein,
Described switch, for starting or stoping described indicating device;
Described indicating device, is connected with described switch, after starting at described indicating device, indicate power equipment to be in electriferous state;
Described warning device, is connected with described switch, comprises: heat sensor, alarm distance adjusting device and alarm, wherein,
Described alarm distance adjusting device, for arranging alarm distance;
Described heat sensor, for detecting the distance of thermal source and described power equipment;
Described alarm, is connected between described heat sensor and described alarm distance adjusting device, for when the distance of thermal source and described power equipment is less than described alarm distance, sends the alarm of described charged electric power apparatus.
9. safety distribution cabinet according to claim 1, is characterized in that: the area of described cap base is greater than the area of described top board, the top that described top cover is triangular in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771025.1U CN205104778U (en) | 2015-09-30 | 2015-09-30 | Safety power distribution cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771025.1U CN205104778U (en) | 2015-09-30 | 2015-09-30 | Safety power distribution cabinet |
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| CN205104778U true CN205104778U (en) | 2016-03-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186314A (en) * | 2015-09-30 | 2015-12-23 | 国家电网公司 | Safe power distribution cabinet |
| CN107472088A (en) * | 2017-08-11 | 2017-12-15 | 南京铁道职业技术学院 | A kind of protection device and its method for rail current potential of convenient installation |
| CN108235619A (en) * | 2017-12-29 | 2018-06-29 | 丙申南京网络技术有限公司 | A kind of safety device of Logistics networks equipment |
| CN109861193A (en) * | 2018-12-29 | 2019-06-07 | 樊嵩 | A kind of earth leakage protecting method and its system of electric cabinet |
-
2015
- 2015-09-30 CN CN201520771025.1U patent/CN205104778U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186314A (en) * | 2015-09-30 | 2015-12-23 | 国家电网公司 | Safe power distribution cabinet |
| CN107472088A (en) * | 2017-08-11 | 2017-12-15 | 南京铁道职业技术学院 | A kind of protection device and its method for rail current potential of convenient installation |
| CN108235619A (en) * | 2017-12-29 | 2018-06-29 | 丙申南京网络技术有限公司 | A kind of safety device of Logistics networks equipment |
| CN109861193A (en) * | 2018-12-29 | 2019-06-07 | 樊嵩 | A kind of earth leakage protecting method and its system of electric cabinet |
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