CN209707928U - A kind of electric control system - Google Patents
A kind of electric control system Download PDFInfo
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- CN209707928U CN209707928U CN201920687229.5U CN201920687229U CN209707928U CN 209707928 U CN209707928 U CN 209707928U CN 201920687229 U CN201920687229 U CN 201920687229U CN 209707928 U CN209707928 U CN 209707928U
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Abstract
The utility model relates to electrical engineering fields, and in particular to a kind of electric control system, including incoming line cabinet and at least two feeder cabinets in parallel；Wherein, all feeder cabinets are connect with the output end of the incoming line cabinet, and the input terminal of the incoming line cabinet connects to power supply, and the output end of the feeder cabinet is connect with electrical equipment；Leakage detecting circuit is connect with the main supply lines of the incoming line cabinet respectively, and is connect with the slave supply lines in each feeder cabinet.The electric control system of by using incoming line cabinet and at least a feeder cabinet composition in parallel, separates main supply lines and from supply lines, guarantees that the circuit between each cabinet body is mutually indepedent；And leakage detecting circuit is respectively set in main supply lines and from supply lines, guarantee equipment Electrical Safety and personal Electrical Safety in each power supply process.
Description
Technical field
The utility model relates to electrical engineering fields, and in particular to a kind of electric control system.
Background technique
Electrification is used as social progress mark, and the more and more people's lives that enter of various electric utilities work.Electricity simultaneously
Gas equipment also induces a large amount of fire hazard because of a variety of causes, caused by casualties and economic loss.However electrical fire is hidden
Suffering from has certain " concealment ", visual inspection it is often difficult to find.
Common low-tension switch cabinet is made of connecting terminal, various disconnecting links, protection equipment, though it can shield,
It not can be carried out detection of electrical leakage.For uneven earthed system, if because of electric leakage accident caused by device line and environmental factor,
At the first time without leakage tripping, equipment is still worked normally for electric leakage equipment or circuit.The electrical equipment band under the environment that leaks electricity
Electricity work this to personal safety bring great hidden danger.
Utility model content
In view of this, the utility model embodiment provides a kind of electric control system, to solve the problems, such as Electrical Safety.
According in a first aspect, a kind of electric control system provided by the embodiment of the utility model, comprising:
Incoming line cabinet and at least two feeder cabinets in parallel；Wherein, the output of all feeder cabinets and the incoming line cabinet
End connection, the input terminal of the incoming line cabinet connect to power supply, and the output end of the feeder cabinet is connect with electrical equipment；
Leakage detecting circuit is connect with the main supply lines of the incoming line cabinet respectively, and in each feeder cabinet from confession
Electric wire connection.
The electric control system of by using incoming line cabinet and at least a feeder cabinet composition in parallel, main supply lines and from power supply
Line separates, and guarantees that the circuit between each cabinet body is mutually indepedent,；And it hunts leak back in main supply lines and being respectively set from supply lines
Road guarantees equipment Electrical Safety and personal Electrical Safety in each power supply process.
According in a first aspect, in first aspect first embodiment, the leakage detecting circuit includes and the incoming line cabinet
First leakage detecting circuit of main supply lines connection, and the second leakage detecting circuit being connect with the slave supply lines of the feeder cabinet；
Wherein, first leakage detecting circuit includes: the first leak detection relay, electric leakage monitoring unit, the first current transformer
And frame circuit breaker；Wherein, the first leak detection electrical relay test side is connect with the input terminal of the electric leakage monitoring unit, the leakage
The output end of electric monitoring unit connects main supply lines；First leakage relay test side and the first current transformer input terminal connect
It connects, the first current transformer output end connection is main for electrical grounding wire；The first leakage relay control terminal also with frame
The control terminal of breaker connects, and the output end of the frame circuit breaker connects main supply lines；
Second leakage detecting circuit includes: the second leak detection relay, the second current transformer, breaker；Wherein, second leak detection after
The connection of the input terminal of electrical testing end and current transformer, the output end of the current transformer are connect with from for electrical grounding wire；
The second leak detection relay control terminal is connect with breaker input terminal, and the output end of the breaker is connect with from supply lines.
It is examined by the way that the first leakage detecting circuit is arranged on the main supply lines of incoming line cabinet and is arranged in feeder cabinet from electric wire second
Road is drained back to, to guarantee that the supply lines connected to each cabinet body does detection of electrical leakage, guarantees the Electrical Safety of each supply lines, utilizes
First leak detection relay set by first leakage detecting circuit and electric leakage monitoring unit, the first current transformer, frame circuit breaker connect
It connects and is connected with the second leak detection relay, the second current transformer set by the second leakage detecting circuit, breaker；Guarantee the first inspection
It drains back to road and the second leakage detecting circuit can be while monitoring master/supply lines with the presence or absence of drain conditions, moreover it is possible to cutting leakage in time
Circuit prevents the electric leakage running of electrical equipment band, threatens personal safety.
According in a first aspect, the first leakage detecting circuit connection electric leakage monitoring is single in first aspect second embodiment
Member monitors the electric signal on main supply lines, and the leak detection relay connection current transformer detects current signal on main ground line,
The leak detection relay connection framework breaker carries out electric leakage movement.
According in a first aspect, the frame circuit breaker is connected with electric blocking and connects in first aspect third embodiment
Point and closing by hand device.
Electric signal monitoring is carried out with electric wire on main supply lines using the first leakage detecting circuit, and is moved by breaker
Finish route progress electrical leakage breaking operation of leaking electricity in pairs, prevents electrical equipment from charging running in leakage circuit, ensure that electricity consumption
Safety and personal safety.
According in a first aspect, it is mutual that second leakage detecting circuit connects the second electric current in the 4th embodiment of first aspect
Sensor carries out current detecting to from for electrical grounding wire；Second leak detection relay control terminal connection breaker to from supply lines into
Row electric leakage movement.
Using the second leakage detecting circuit to from supply lines carry out current detecting, with monitor from supply lines route and electricity consumption
The drain conditions of equipment control guaranteeing from supply lines and from supply lines by the second leakage relay to breaker
The Electrical Safety of upper electrical equipment.
According in a first aspect, in the 5th embodiment of first aspect, the first leak detection relay and/or the second leak detection relay
Device connects electrical equipment, the drain conditions in electrical equipment is detected, wherein second leak detection relay is also connected with and tests back
Road.
Second leak detection relay connecting test circuit guarantees electricity consumption to guarantee that leak detection relay is able to carry out normal work
Safety.
According in a first aspect, in first aspect sixth embodiment, further includes: power cabinet and contact cabinet；
The input terminal connection power grid of the power cabinet, the output end of the power cabinet is connected in parallel incoming line cabinet, described
The input terminal of network cabinet and the main supply lines of incoming line cabinet connect, and the output end for getting in touch with cabinet is connect with spare main supply lines.
According in a first aspect, the power cabinet includes 2 groups of main supply lines, described in the 7th embodiment of first aspect
The main supply lines of power cabinet is connect with the main supply lines of incoming line cabinet respectively；The input terminal of the contact cabinet connects the first incoming line cabinet,
The output end of the contact cabinet connects the second incoming line cabinet.
According in a first aspect, the contact cabinet is provided with current transformer and frame in the 8th embodiment of first aspect
Frame breaker；Main supply lines in first incoming line cabinet is connect with the current transformer test side in contact cabinet, the contact
Current transformer output end in cabinet is connect with frame circuit breaker control terminal, the output end of frame circuit breaker connection second into
Line cabinet.
By power cabinet being electrically accessed in power supply system with power grid, and using power switch is installed in power cabinet, make
Power supply is divided into duplex feeding, so that two-way power supply is able to carry out switching by connection contact cabinet, main for leakance all the way wherein
When electric, guarantee that electricity consumption is normal by switching power supply circuit.
According in a first aspect, also being set in the incoming line cabinet and/or the feeder cabinet in the 9th embodiment of first aspect
It is equipped with environment control unit；Wherein, the environment control unit includes at least one sensor and heater.
By the way that installation environment controller is in incoming line cabinet and feeder cabinet to guarantee Electrical Safety, by cabinet body environmental monitoring
Control, with reduce because of environmental factor caused by circuit aging phenomenon.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 shows a kind of structure chart of electric control system in the utility model embodiment；
Fig. 2 is the structural block diagram according to first leakage detecting circuit of the utility model embodiment；
Fig. 3 is the structural block diagram according to second leakage detecting circuit of the utility model embodiment；
Fig. 4 is the structural schematic diagram according to the frame circuit breaker of the utility model embodiment；
Fig. 5 is the breaker structure schematic diagram according to the second leakage detecting circuit of the utility model embodiment；
Fig. 6 is the test circuit connection diagram according to the utility model embodiment；
Fig. 7 is a kind of structural schematic diagram of electric control system provided by the embodiment of the utility model；
Fig. 8 is the structure chart according to the environment control unit of the utility model embodiment.
Appended drawing reference
1- incoming line cabinet；2- feeder cabinet；3- gets in touch with cabinet；4- power cabinet；
20- electric leakage monitoring unit；The first current transformer of 21-；The first leak detection relay of 22-；23- frame open circuit
Device；The second current transformer of 24-；The second leak detection relay of 25-；26- breaker；
30- leak detection relay；31- current transformer；
FU- fuse；PZ- digital display apparent source；JY- leak detection relay；HR- indicator light；HK- switch；P1/P2-
Electric blocking point contact；QF- frame circuit breaker；1QF- breaker；
ZK- miniature circuit breaker；WK- controller；JR- heater；CG- sensor.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those skilled in the art's every other embodiment obtained without creative efforts, belongs to this reality
With novel protected range.
A kind of electric control system provided by the embodiment of the utility model, as shown in Figure 1 electrically includes:
Incoming line cabinet 1 and at least two feeder cabinets 2 in parallel；Wherein, the output end of all feeder cabinets 2 and incoming line cabinet 1 connects
It connects, the input terminal of incoming line cabinet 1 connects to power supply, and the output end of feeder cabinet 2 is connect with electrical equipment；
Leakage detecting circuit is connect with the main supply lines of incoming line cabinet 1 respectively, and is connected with the slave supply lines in each feeder cabinet 2
It connects.
By using the electric control system that incoming line cabinet 1 and at least two feeder cabinets 2 in parallel form, main supply lines and from
Supply lines separates, and guarantees that the circuit between each cabinet body is mutually indepedent,；And leak detection is respectively set in main supply lines and from supply lines
Circuit guarantees equipment Electrical Safety and personal Electrical Safety in each power supply process.
According to embodiment provided by the embodiment of the utility model, leakage detecting circuit includes connecting with the main supply lines of incoming line cabinet 1
The first leakage detecting circuit connect, and the second leakage detecting circuit being connect with the slave supply lines of feeder cabinet 2.
Wherein, the first leakage detecting circuit, as shown in Figure 2, comprising: the first leak detection relay 22, electric leakage monitoring unit 20, first
Current transformer 21 and frame circuit breaker 23；Wherein, the input of the first leak detection electrical relay test side and monitoring unit 20 of leaking electricity
The output end of end connection, electric leakage monitoring unit 20 connects main supply lines；First leakage relay test side and the first Current Mutual Inductance
The connection of 21 input terminal of device, the connection of 21 output end of the first current transformer are main for electrical grounding wire；First leakage relay control terminal is also
It is connect with the control terminal of frame circuit breaker 23, the output end of frame circuit breaker 23 connects main supply lines.
Second leakage detecting circuit, as shown in Figure 3, comprising: the second leak detection relay 25, the second current transformer 24, breaker
26；Wherein, 25 test side of the second leak detection relay is connect with the input terminal of current transformer 31, the output end of current transformer 31
It is connect with from for electrical grounding wire；Second leak detection relay, 25 control terminal is connect with 26 input terminal of breaker, the output of breaker 26
End is connect with from supply lines.
Specifically, the main supply lines of the first leakage detecting circuit connects the slave supply lines in the second leakage detecting circuit, wherein from power supply
It is connected at least two feeder cabinets 2 on line, is provided with the second leakage detecting circuit in feeder cabinet 2, and is connected with inlet wire on main supply lines
Cabinet 1 is wherein provided with the first leakage detecting circuit in incoming line cabinet 1.
Optionally, the first leakage detecting circuit is arranged in an incoming line cabinet 1, and the second leakage detecting circuit can be set at one or more
In a feeder cabinet 2, incoming line cabinet 1 is to 2 inlet wire of feeder cabinet power supply in parallel.
Optionally, the first leakage detecting circuit in incoming line cabinet 1 carries out detection of electrical leakage to main supply lines, and second in feeder cabinet 2
Leakage detecting circuit to each electrical equipment carry out detection of electrical leakage, from by main circuit carry out detection and branched line detect, protect
Electrical Safety is demonstrate,proved, electric leakage maintenance is conducive to.
According to embodiment provided by the embodiment of the utility model, the first leakage detecting circuit connection electric leakage monitoring unit 20 is supervised
The electric signal on main supply lines is controlled, leak detection relay 30 connects current transformer 31 and detects current signal on main ground line, hunts leak
30 connection framework breaker 23 of relay carries out electric leakage movement.
In embodiment provided by the embodiment of the utility model, frame circuit breaker 23 be connected with electric blocking contact and
Closing by hand device.
Specifically, as shown in figure 4, being connected with fuse FU, digital display apparent source PZ, leakage relay JY on main supply lines
With frame circuit breaker 23 (QF), frame circuit breaker 23 (QF) connects each work light HR, switch HK and electric blocking contact
P1, P2, when the first leak detection relay 22 has detected drain conditions, the trip(ping) circuit movement in frame circuit breaker 23, frame breaks
The normally-closed contact of road device 23 becomes normally opened contact, electric leakage equipment power-off.
In embodiment provided by the embodiment of the utility model, it is right that the second leakage detecting circuit connects the second current transformer 24
Current detecting is carried out from for electrical grounding wire；Second leak detection relay, 25 control terminal connection breaker 26 is leaked to from supply lines
Electronic work.
Specifically, as shown in figure 5, being connected with fuse FU from supply lines, breaker 26 (1QF) is connected with indicator light
HR, digital display meter PZ and leak detection relay JY, as leak detection relay JY because electric leakage acts, the normally opened contact of leak detection relay JY becomes
For normally-closed contact, the breaking indicator light for connecting breaker 26 (1QF) is lighted, and the normally-closed contact of breaker 26 becomes normally opened contact,
Power supply unit power-off.
Wherein, digital display meter is installed with monitor current voltage status, easy to repair, guarantee in main supply lines and from supply lines
Electrical Safety.
Optionally, there can be multiple leak detection relay in the second leakage detecting circuit；First leak detection relay and the second leak detection
Relay can be the relay of different model.
Optionally, electric blocking contact P1 is connect with incoming line cabinet locking contact, electric blocking contact P2 and contact cabinet locking
Contact connection arrived the purpose capableing of incoming power and switching by connecting electric blocking contact.
In embodiment provided by the embodiment of the utility model, the first leak detection relay 22 and/or the second leak detection relay
Device 25 connects electrical equipment, the drain conditions in electrical equipment is detected, wherein the second leak detection relay 25 is also connected with and tests back
Road.
Specifically, the first leakage detecting circuit is connected with electric leakage monitoring unit 20, wherein first in the first leakage detecting circuit hunts leak
The connecting terminal of relay 22 connects main supply lines, is monitored to the electric current on main supply lines, when electric leakage monitoring unit 20 is supervised
Drain conditions are measured, then the first leakage relay control framework breaker 23 disconnects, and stops power supply.
Specifically, the first leakage relay is also connected with each ground line, current transformer 31 is also connected on ground line,
It monitors with the presence or absence of electric current on each ground line, when monitor has electric current to pass through on ground line, the movement of the first leak detection relay 22,
Frame circuit breaker disconnects, and stops power supply.
Specifically, closing by hand operation, the leakage detecting circuit when there are drain conditions can be carried out in frame circuit breaker 23
It is able to carry out automatic trip.
Optionally, in the first leakage detecting circuit, it is also connected with voltage detection circuit, the voltage on main supply lines is examined
It surveys.
Specifically, being connected with current transformer 31 on the second leakage detecting circuit, the ground path of electrical equipment is detected,
Guarantee Electrical Safety.
Specifically, the second leak detection relay 25 is connected with the calibrating terminal of electrical equipment and leak detection relay 30；Wherein
Leak detection relay 30 is also connected with breaker 26；Second leak detection relay 25 carries out detection of electrical leakage to electrical equipment, when monitoring
When having drain conditions, leakage relay movement, control breaker 26 is disconnected, and so that its electrical equipment is stopped working, to electrical equipment
The one-to-one detection leaked electricity makes to power off single device when drain conditions occur, and is guaranteeing other equipment work just
Often, to improve production efficiency, overhaul of the equipments speed is also improved, guarantees production and Electrical Safety.
Optionally, in the first leakage detecting circuit and the second leakage detecting circuit, it is also connected with control instructions lamp as illustrated in figures 4-5,
And manual control button, it is manually controlled with guaranteeing that its electric control system is able to carry out, failure is carried out by control instructions lamp
Judgement.
Optionally, leak detection has leakage tests circuit in the second leakage detecting circuit, and wherein leakage tests circuit is connected by test resistance
Test switch composition is connect, is connect with the second leakage relay, when pressing test switch, testing in circuit has electric current process, and second
Leakage relay detects that drain conditions, frame circuit breaker 23 are acted, and leak detection test is carried out to leakage detecting circuit, to guarantee
Leak detection relay 30 is in normal operating conditions in the course of work, guarantees Electrical Safety.
Specifically, as shown in fig. 6, leakage tests circuit, when there is an electric current to flow through mutual inductor, being equivalent to route has electric leakage electricity
Stream, leak detection relay 30 act, cutting power supply.
According to embodiment provided by the embodiment of the utility model, as shown in Figure 7 further include: power cabinet 4 and contact cabinet 3；
The input terminal connection power grid of power cabinet 4, the output end of power cabinet 4 are connected in parallel incoming line cabinet 1, get in touch with the defeated of cabinet 3
Enter end to connect with the main supply lines of incoming line cabinet 1, the output end of contact cabinet 3 is connect with spare main supply lines.
In embodiment provided by the embodiment of the utility model, power cabinet 4 includes 2 groups of main supply lines, the master of power cabinet 4
Supply lines is connect with the main supply lines of incoming line cabinet 1 respectively；The input terminal for getting in touch with cabinet 3 connects the first incoming line cabinet, gets in touch with the output of cabinet 3
The second incoming line cabinet of end connection.
According to embodiment provided by the embodiment of the utility model, contact cabinet 3 is provided with current transformer 31 and frame is disconnected
Road device 23；Main supply lines in first incoming line cabinet is connect with 31 test side of current transformer in contact cabinet 3, is got in touch in cabinet 3
31 output end of current transformer is connect with 23 control terminal of frame circuit breaker, and the output end of frame circuit breaker 23 connects the second inlet wire
Cabinet.
Specifically, the input terminal of power cabinet 4 is connect with the power transmission line of power grid, the input terminal of power transmission line connects power cabinet 4
In power-supply controller of electric, control system of switching on or off electricity is carried out to rear class electrical equipment by the on-off of power-supply controller of electric.
Optionally, the power-supply controller of electric in power cabinet 4 is dual power supply control, being divided into two from the power supply line on electric wire
Road can be powered two sets of electric control systems.
Optionally, contact cabinet 3 connects two sets of electric control systems, by frame circuit breaker 23, two sets of electrical control systems
System is attached, and in electric control system normal work, a set of electric control system is only run, when the electric control system
When electric leakage accident occurs, the frame circuit breaker got in touch in cabinet 3 is acted, and disconnects the electric control system being currently running, and is connected
Another set of electric control system guarantees the normal operation in production work, to prevent from powering off caused by because of electric leakage accident to production
Progress impacts.
According to embodiment provided by the embodiment of the utility model, as shown in figure 8, in incoming line cabinet 1 and/or feeder cabinet 2 also
It is provided with environment control unit；Wherein, environment control unit includes at least one sensor CG and heater JR.
Specifically, environment control unit is arranged in incoming line cabinet 1 and/or feeder cabinet 2, the intracorporal environment of cabinet is supervised
It surveys, to prevent accident of leaking electricity caused by aging circuit；Wherein the power supply of environment control unit connects main supply lines, environmental Kuznets Curves dress
It sets and is formed including controller WK, sensor CG and heater JR.
Optionally, it is connected with miniature circuit breaker ZK on the power supply power supply line of environment control unit, connects miniature circuit breaker
ZK can guarantee in environmental control work over-current phenomenon avoidance occur, and miniature circuit breaker ZK movement disconnects power supply, guarantees rear class ring
The equipment safety of border control device prevents from damaging environment control unit because of over-current phenomenon avoidance.
Optionally, environment control unit is by including that at least one a sensor CG and heater JR is formed, wherein sensing
Device can be temperature sensor, humidity sensor and Temperature Humidity Sensor, be also possible to thermistor；And the heating of heater JR
Mode can be electromagnetic heating, resistance heating and infrared heating.
Optionally, electric control system can be is by what power cabinet 4 connected an incoming line cabinet 1 and feeder line
System is also possible to the system that a power cabinet 4 connects an incoming line cabinet 1 and multiple feeder cabinets 2 in parallel, can also be power cabinet 4
Middle installation dual power supply, two incoming line cabinets 1 are correspondingly connected with, two incoming line cabinets 1 are separately connected multiple feeder cabinets 2 in parallel, pass through connection
Network cabinet 3 switches over two incoming line cabinets 1, and by installing leakage detecting circuit in incoming line cabinet 1 and feeder cabinet 2, guarantee each electric cabinet it
Between use the independence of electric wire, facilitate its subsequent electric leakage service work, and guarantee each Electrical Safety with route.
Specifically, be provided with condensation controller in incoming line cabinet 1 and feeder cabinet 2, wherein the power end of condensation controller with
Main supply lines connection, is also connected with miniature circuit breaker 26, on main supply lines to guarantee the equipment safety of condensation controller, condensation
It is connected with a heater in controller, the intracorporal environment of cabinet is heated, guarantees that the intracorporal route of cabinet is in dry constant temperature
State, be also connected with condensation sensor in condensation controller, wherein condensation sensor is monitored the intracorporal temperature and humidity of cabinet,
And heater movement is controlled, guarantee the constant of the intracorporal environment of cabinet, to prevent accident of leaking electricity caused by because of environmental factor, guarantees to use
Electric safety.
Although being described in conjunction with the accompanying the embodiments of the present invention, those skilled in the art can not depart from this
Various modifications and variations can be made in the case where the spirit and scope of utility model, and such modifications and variations are each fallen within by appended power
Benefit requires within limited range.
Claims (10)
1. a kind of electric control system characterized by comprising
Incoming line cabinet and at least two feeder cabinets in parallel；Wherein, the output end of all feeder cabinets and the incoming line cabinet connects
It connects, the input terminal of the incoming line cabinet connects to power supply, and the output end of the feeder cabinet is connect with electrical equipment；
Leakage detecting circuit is connect with the main supply lines of the incoming line cabinet respectively, and with the slave supply lines in each feeder cabinet
Connection.
2. system according to claim 1, which is characterized in that the leakage detecting circuit includes the main power supply with the incoming line cabinet
First leakage detecting circuit of line connection, and the second leakage detecting circuit being connect with the slave supply lines of the feeder cabinet；
Wherein, first leakage detecting circuit includes: the first leak detection relay, electric leakage monitoring unit, the first current transformer and frame
Frame breaker；Wherein, the first leak detection electrical relay test side is connect with the input terminal of the electric leakage monitoring unit, the electric leakage prison
Output end depending on unit connects main supply lines；First leakage relay test side is connect with the first current transformer input terminal, institute
It is main for electrical grounding wire to state the connection of the first current transformer output end；The first leakage relay control terminal also with frame circuit breaker
Control terminal connection, the output end of the frame circuit breaker connects main supply lines；
Second leakage detecting circuit includes: the second leak detection relay, the second current transformer, breaker；Wherein, the second leak detection relay
The connection of the input terminal of test side and current transformer, the output end of the current transformer are connect with from for electrical grounding wire；It is described
Second leak detection relay control terminal is connect with breaker input terminal, and the output end of the breaker is connect with from supply lines.
3. system according to claim 2, which is characterized in that the first leakage detecting circuit connection electric leakage monitoring unit monitoring
Electric signal on main supply lines, the leak detection relay connection current transformer detect current signal on main ground line, the inspection
Leakage relay connection framework breaker carries out electric leakage movement.
4. system according to claim 3, which is characterized in that the frame circuit breaker be connected with electric blocking contact and
Closing by hand device.
5. system according to claim 2, which is characterized in that second leakage detecting circuit connects the second current transformer pair
Current detecting is carried out from for electrical grounding wire；The second leak detection relay control terminal connection breaker leaks electricity to from supply lines
Movement.
6. system according to claim 2, which is characterized in that the first leak detection relay and/or the second leak detection relay connect
Electrical equipment is connect, the drain conditions in electrical equipment are detected, wherein second leak detection relay is also connected with test loop.
7. system according to claim 1, which is characterized in that further include: power cabinet and contact cabinet；
The input terminal connection power grid of the power cabinet, the output end of the power cabinet are connected in parallel incoming line cabinet, the contact cabinet
Input terminal and the main supply lines of incoming line cabinet connect, the output end for getting in touch with cabinet connect with spare main supply lines.
8. system according to claim 7, which is characterized in that the power cabinet includes 2 groups of main supply lines, the power cabinet
Main supply lines connect respectively with the main supply lines of incoming line cabinet；The input terminal of the contact cabinet connects the first incoming line cabinet, described
The output end of network cabinet connects the second incoming line cabinet.
9. system according to claim 8, which is characterized in that the contact cabinet is provided with current transformer and frame open circuit
Device；Main supply lines in first incoming line cabinet is connect with the current transformer test side in contact cabinet, in the contact cabinet
Current transformer output end is connect with frame circuit breaker control terminal, and the output end of the frame circuit breaker connects the second incoming line cabinet.
10. system according to claim 1 to 9, which is characterized in that the incoming line cabinet and/or the feeder line
Environment control unit is additionally provided in cabinet；Wherein, the environment control unit includes at least one sensor and heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920687229.5U CN209707928U (en) | 2019-05-14 | 2019-05-14 | A kind of electric control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920687229.5U CN209707928U (en) | 2019-05-14 | 2019-05-14 | A kind of electric control system |
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| CN209707928U true CN209707928U (en) | 2019-11-29 |
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ID=68649607
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976435A (en) * | 2019-12-19 | 2020-04-10 | 山东省科学院激光研究所 | Hand-held laser cleaning device |
-
2019
- 2019-05-14 CN CN201920687229.5U patent/CN209707928U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976435A (en) * | 2019-12-19 | 2020-04-10 | 山东省科学院激光研究所 | Hand-held laser cleaning device |
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