CN209673908U - A set of electrical fire fault simulation and trace preparation facilities - Google Patents

Abstract

The utility model discloses a set of electrical fire fault simulation and trace preparation facilities, it include: surge tank, control cabinet and combustion chamber, the short circuit of analog electric wiring and equipment, hot-spot, owes the Common Electrical Apparatus such as overvoltage at overcurrent, prepare corresponding Fire Trace material evidence, mutually converting between achievable various faults, has reproduced true fault；The high speed measurement that voltage and current can be achieved, has expanded the depth of investigation；Modular numerically controlled operation can be achieved, realize convenient use；The electrodeless adjustment that voltage and current can be achieved, optimizes analogy method；The flexible arrangement that burning scene can be achieved, close to fire reality；Multistage multiple protective can be achieved, ensured safe operation.

Description

A set of electrical fire fault simulation and trace preparation facilities

Technical field

The utility model relates to electrical fires to investigate field, and in particular to a set of electrical fire fault simulation and trace preparation Device.

Background technique

Electrical fire is one of the most common type fire incident, accounts for China's fire and always plays several one thirds or so, for The investigation result of such fire is also one of focus of social concerns, is directly related to the vital interests of masses suffering from disaster.Electrical fire Calamity point two major classes: one kind is that the failures such as short circuit, overcurrent, electric leakage, poor contact occur for electric wiring, and ignite combustible around, Caused by fire；Another kind of is that certain reason leads to electrical equipment malfunction, generates the fire of localized hyperthermia or line fault initiation, Such as: hair dryer resistance heating increases severely, and ignite combustible around, the fire of initiation.According to fire hazard classification SS, the two has sternly The differentiation of lattice, but it is substantially all the energy conversion between voltage, electric current and resistance between combustible.From the angle of fire investigation Degree analysis assert that electric fault causes fire, needs to find under electric wiring or equipment heating residual in position on fire at first Trace its fever process is analyzed by verification of traces, it is comprehensive to assert reason of fire therefore electrical in conjunction with other live evidences The identification of failure trace is the key evidence of entire electrical fire cause determination.

From the 1970s, foreign scholar has begun to the research of electric fault indication character in fire, also basis Research needs to have made some failure generating devices, has pushed the development of electric fault trace identification technology in fire investigation.So And electrical system is complicated, failure mode multiplicity, mutually induces between failure, converts frequently complicated, high temperature of fire destruction in addition, it Prior fault simulator has been unable to satisfy the needs of scientific research.In order to preferably show that various electric faults cause the mistake of fire Journey studies various failure fever phenomenons and causes the condition of fire, understand the process that various faults mutually induce, analyzes in fire The forming process of typical electric fault trace, quantization electric fault energy discharges the influence formed to trace, to deepen trace The depth and precision of research, it is more acurrate to research and develop measurement, records more complete, simulation more closing to reality, safe and reliable reality Test equipment.

Currently, similar devices type is less both at home and abroad, existing equipment majority is single failure simulation generator, mainly Have the disadvantage that deficiency:

(1) it is only capable of simulating single failure, cannot achieve and mutually convert between failure, such as: overcurrent fault, core occur for conducting wire Fever causes failure of insulation, induces short trouble, this is relatively conventional in practical electrical fire, but equipment can not be simulated before；

(2) be only capable of analog line failure, can not easily analog machine and contact fault, such as: the metope of rated current 10A Wiring board, when leading to the high current of 20A, it may occur that contact local pyrexia failure, existing equipment can not be installed fast and be simulated repeatedly；

(3) it is mostly used low voltage failure simulation, actual deficient over-voltage fault can not be simulated, such as: electrical appliance occurs owing over-voltage event Barrier depends primarily on distribution system fault type, and analog machine input voltage needs to be continuously adjusted, and existing equipment is mostly low-voltage High current equipment, and fire is practical differs farther out；

(4) be only capable of observation fever phenomenon, can not data real-time measurement record, such as: the device of short trouble is simulated, even if outside The volometer connect can not capture the voltage and current variation of transcient short circuit time, cause research that can not go deep into；

(5) it is only capable of manual operation control, cannot achieve digital moduleization manipulation, there are some potential safety problemss；

(6) it is only capable of simulating single fire source more, fairly large burning can not be carried out, such as: most devices are limited to combustion chamber Space can not arrange that the combustible of larger load, fire source are mostly the fixed fire source such as used in LPG stove, and inside can not flexible arrangement Electrical appliance and combustible.

Utility model content

To solve the above problems, the utility model provides a set of electrical fire fault simulation and trace preparation facilities.

To achieve the above object, the technical solution that the utility model is taken are as follows:

A set of electrical fire fault simulation and trace preparation facilities, the device incorporate various electric fault occurring principles, Including surge tank, control cabinet and combustion chamber；

1 power of setting is 80KW in the surge tank, and the pressure regulator that adjustable voltage range is 0 to 450V passes through control Motor rotation chain-driving three phase voltage regulating slide plate sliding processed, realizes the step-less adjustment of voltage, voltage is exported through transformer to control Cabinet processed, the housing face-plate of surge tank, which is equipped with, is respectively used to show that the instrument of A, B, C phase surge tank input voltage state is shown Device；

Digital control implement, built-in clearing device, master control protector, exchange control protector, two are disposed in the control cabinet A AC220V socket, DC control air switch, two ballast controllers, rectifier, rectifier start button, rectifier stop Button, rectifier power on buttons, 315 type dc welding machines, JL-500A type AC welding set A, JL-500A type AC welding set B, every From transformer, smoke evacuation switch, scram button, booster start button, booster stop button, boosting indicator light, N phase booster Output wiring terminal, C phase booster output wiring terminal, B phase booster output wiring terminal, A phase booster output wiring terminal, three-phase External socket, two-phase external socket, surge tank boosting start button, surge tank boosting start indicator lamp, surge tank reduced-voltage starting Button, surge tank reduced-voltage starting indicator light, current lifting device start button, current lifting device stop button, current lifting device power on indicator light, machinery Lock is spaced apart, and surge tank input voltage, surge tank input current, A phase are equipped with above the control cabinet and exchanges input indicator, B phase Exchange input indicator, C phase exchange input indicator, surge tank output voltage, surge tank output electric current, boost button and do not reset Acousto-optic instruction, decompression button do not reset Acoustooptic indicator, for showing booster output voltage, the boosting of booster working condition Device input current, A phase booster input indicator, B phase booster input indicator, C phase booster input indicator and display Device；

It is equipped in the combustion chamber:

Connecting column slot A, for connecting overvoltage/undervoltage experiment；

Connecting column slot B is tested for direct-current short circuit and overcurrent, is connect with 315 type dc welding machine output ends；

Connecting column slot C is tested for single phase ac short circuit and overcurrent, is connect with JL-500A type AC welding set A；

Connecting column slot D is tested for line to line fault and overcurrent, connects JL-500A type AC welding set A and JL-500A type Each one end AC welding set B is connected through load；

The power output terminal of the combustion chamber is that copper bores the connection of column card slot, meets 10mm²Multicore copper conductor external world electric weld handle, For connecting various conducting wires and electrical appliance；Wall surface wiring pole panel below combustion chamber connects for plain nut, can be without weldering Being directly connected to various electrical equipments, direct current be arranged altogether, crosses and under-voltage and exchanges three kinds of way of outputs, while being equipped at panel 5 spring hole scoket of 220V and 380V4 spring hole scoket, for connecting electrical equipment by plug；In combustion chamber, it is provided with dismountable wall Face socket connects box for poor contact failure, and according to overcurrent principle, iron shell, iron shell is installed according to wall surface socket It is required that carry out interior welds processing, can convenient and quick three hole of installation wall surface and five spring hole scokets, for simulating poor contact at socket With hot-spot caused by overcurrent；Indoor top is smoke evacuation system, is connect with main smoke evacuation system, the cigarette that discharge burning generates Gas is discharged after carrying out purified treatment；Inner Wall of Combustion Chamber two sides interval 30cm has been arranged symmetrically several groups card slot, for disposing load-bearing Partition, the load-bearing partition are used to carry out the arrangement of electric appliance or route.

Further, surge tank, which is input to control cabinet, the different types of voltage of two-way, electrical for analog DC all the way Failure, another way are used for the electrical failure of analog AC.

Further, when analog DC electric fault: alternating current is through master control protector, through DC control air switch, by Built-in digital control implement (containing computer program), rectifier start button, rectifier stop button, rectifier power on buttons are controlled parallel System can be achieved at the same time numerical control control (common control) and manually control (emergency braking), and 380V electric main, A phase is inputted with B phase To 315 type dc welding machines, described two ballast controllers, the electric current output control button as 315 type dc welding machines are used In the DC current output for realizing 40A to 240A, the ballast controller connection indoor connecting column slot B of burning realizes direct current Short trouble and the simulation of direct current overcurrent fault.

Further, when the electrical failure of analog AC: alternating current accesses pressure regulator, by pressure regulator A through master control protector In the voltage input to control cabinet that phase, B phase are exported with C phase exchanging control protector, manually control surge tank boosting starting by Button and surge tank reduced-voltage starting button, digital control implement built in parallel connection, control boosting starter and reduced voltage starter, boost through surge tank Start indicator lamp and surge tank reduced-voltage starting indicator light show voltage regulator operation state, while showing process control and manually control System, the needs that A phase, B phase and C phase are simulated according to electric fault, distribution setting as follows:

First is that A phase is input to JL-500A type AC welding set A with B phase for simulating single-phase short circuit, is controlled and adjusted by computer The motor rotation of depressor adjusts within the scope of A phase and B voltage between phases safe voltage, by JL-500A type AC welding set A current lifting device Control is external to control panel, is controlled with current lifting device start button and current lifting device stop button, and digital control implement built in downlink connection, uses In process control JL-500A type AC welding set A, current lifting device is set and powers on indicator light, shows the work of JL-500A type AC welding set A Make state, to control AC welding set A output in terms of voltage, two, electric current, analog AC single-phase earthing fault and single leads The overcurrent fault of line, built-in clearing device, pressure regulator voltage is zeroed after single experiment, prevents electric shock accidents；

Second is that the overvoltage/undervoltage for electrical equipment is tested, A phase, B phase and C phase are through isolating transformer, transformation ratio 1:1.5, Booster start button is arranged in the voltage of exportable alternate peak 660A measured value, leading portion, and two-step evolution protective program is arranged Setting up password and switch initiation key, non-special messenger can not start, while connect scram button, in special circumstances, promptly making Dynamic, same to connect booster stop button and built-in clearing device, connection boosting indicator light prompts boosting carrying out, A phase, B Phase, C phase introduce combustion chamber respectively and correspond to binding post, connect electrical equipment, and external binding post is arranged at control panel, is respectively A phase booster output wiring terminal, B phase booster output wiring terminal, C phase booster output wiring terminal and the output of N phase booster connect Terminal and the three-phase external socket of adjustable voltage, two-phase external socket, mainly in the various companies of bulky equipment It connects, realizes the overvoltage/undervoltage fault simulation of plurality of devices；

Third is that two-phase AC fault is simulated, on the basis of A phase inputs JL-500A type AC welding set A with B phase, by B phase and C phase inputs L-500A type AC welding set B, and 2 JL-500A type AC welding set output both ends are connect with load resistance, passes through pressure regulation Device controls the voltage of A phase, B phase and C phase, replaces load resistance interface, adjusts resistance sizes, realizes that two-phase exchanges overcurrent fault Induce short trouble experiment simulation；

Fourth is that 220V voltage output is arranged two in control panel to be external convenient for follow-up data recording equipment, lighting apparatus A AC220V socket, is directly connected to A phase and N phase, considers certain extreme conditions, and alternating current 220V direct short-circuit is straight by A phase and N phase It connects and introduces combustion chamber, front end setting mechanical lock is spaced apart, and encrypted code is protected in program, and layman can not start；

Occurrence condition can be arranged in above-mentioned fault simulation route by program, and voltage and current is arranged in internal wiring corresponding position High-speed collection card 1.5 × 10⁴Hz, real-time display collection voltages curent change, internal processes record and generate EXCEL document.

Further, the size of the combustion chamber is 1640mm × 1000mm × 2374mm, and the load-bearing partition uses The non-ignitable bakelite of insulation of 10mm thickness, prevents from leaking electricity.

Further, the adjustable range of one of ballast controller is 40A to 240A, another ballast controller is used In superimposed current, maximum amplification 40A, to realize the DC current output of 40A to 240A.

The utility model has the following beneficial effects:

(1) " a tractor serves several purposes " is realized, electrical circuit fault can have both been simulated and cause fire, electrical equipment can also be simulated Failure causes fire, so that electrical fire teaching and research work more comprehensive system；

(2) it realizes and converts between failure, both can individually simulate the failures such as short circuit, overcurrent, heating of contact, it can also be with mould Quasi- overcurrent induces short circuit, short circuit induces overcurrent, overcurrent induces the conversion of the various faults such as heating of contact, convenient for deeply reason Solve the relationship between electric fault；

(3) it is continuously adjustable to realize pressurization experiment, high-power transformer is set, and alternating voltage continuously may be used within the scope of 0V~660V It adjusts, can both simulate over-voltage experiment, the also under-voltage experiment of analog both can be with analog DC failure, can also be with analog AC failure；

(4) Modularized digital manipulation is realized, built-in high-performance server, design specialized controls software, in LCD touch Experiment is manipulated on screen, for different experimental projects, is operated with accommodation function module, not only ensure that safety, but also improve Conventional efficient；

(5) data high-speed acquisition and recording is realized, built-in 1.5 × 104Hz voltage and current capture card, before and after recording failure Current Voltage value, the variation of real-time display waveform support EXCEL export, handle convenient for follow-up data, improve the science of research And preciseness；

(6) flexible setting of burning condition is realized, 1640mm × 1000mm × 2374mm large size combustion chamber is inside set multiple Board slot, plate face have carried out insulation processing, can be needed that flammable object location is arranged according to experiment, can be by refrigerator, washing machine etc. Electrical appliance is placed in combustion chamber, carries out equipment fault experiment.

Detailed description of the invention

Fig. 1 is the utility model overall appearance figure；

Fig. 2 is surge tank internal structure chart；

Fig. 3 is control cabinet internal structure chart and control layout；

Fig. 4 is combustion chamber topology layout figure；

Fig. 5 is combustion chamber internal wiring mode structural map；

Fig. 6 is overall electrical line map.

Specific embodiment

The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability For the those of ordinary skill in domain, without departing from the concept of the premise utility, various modifications and improvements can be made. These are all within the protection scope of the present invention.

As Figure 1-Figure 5, the utility model embodiment provides a set of electrical fire fault simulation and trace preparation dress It sets, which incorporates various electric fault occurring principles, including surge tank 1, control cabinet 2 and combustion chamber 3；

1 power of setting is 80KW in the surge tank 1, and the pressure regulator 4 that adjustable voltage range is 0 to 450V passes through Controlling 7 rotating link chain 8 of motor drives three phase voltage regulating slide plate 6 to slide, and realizes the step-less adjustment of voltage, voltage is defeated through transformer 5 Out to control cabinet 2, the housing face-plate of surge tank 1 is equipped with the instrument for being respectively used to display A, B, C phase surge tank input voltage state Table display 9,10 and 11；

Digital control implement, built-in clearing device, master control protector 12, exchange control protector are disposed in the control cabinet 2 13, two AC220V sockets 14, DC control air switch 15, ballast controller I 16, ballast controller II 17, rectifier, Rectifier start button 18, rectifier stop button 19, rectifier power on buttons 20,315 type dc welding machines 21, JL-500A Type AC welding set A22, JL-500A type AC welding set B23, isolating transformer 24, smoke evacuation switch 25, scram button 26, booster Start button 27, booster stop button 28, boosting indicator light 29, N phase booster output wiring terminal 30, the output of C phase booster Binding post 31, B phase booster output wiring terminal 32, A phase booster output wiring terminal 33, three-phase external socket 34, two-phase are external Socket 35, surge tank boosting start button 36, surge tank boosting start indicator lamp 37, surge tank reduced-voltage starting button 38, pressure regulation Cabinet reduced-voltage starting indicator light 39, current lifting device start button 40, current lifting device stop button 41, current lifting device power on indicator light 42, machinery Lock is spaced apart 43, and surge tank input voltage 44, surge tank input current 45, A phase are equipped with above the control cabinet 2 and exchanges input instruction Lamp 46, B phase exchange input indicator 47, C phase exchanges input indicator 48, surge tank output voltage 49, surge tank export electric current 50, boost button does not reset acousto-optic instruction 51, decompression button does not reset Acoustooptic indicator 52, for showing booster working condition Booster output voltage 53, booster input current 54, A phase booster input indicator 55, B phase booster input instruction Lamp 56, C phase booster input indicator 57 and display 58；

It is equipped in the combustion chamber:

Connecting column slot A58 and 59, for connecting overvoltage/undervoltage experiment；

Connecting column slot B60 and 61 is tested for direct-current short circuit and overcurrent, is connected with 315 type dc welding machine, 21 output end It connects；

Connecting column slot C62 and 63 is tested for single phase ac short circuit and overcurrent, is connected with JL-500A type AC welding set A22 It connects；

Connecting column slot D64 and 65 is tested for line to line fault and overcurrent, connection JL-500A type AC welding set A22 and Each one end JL-500A type AC welding set B23, connects through load resistance 70；

The power output terminal of the combustion chamber 3 is that copper bores the connection of column card slot, meets 10mm²The electric welding of the multicore copper conductor external world For connecting various conducting wires and electrical appliance；Wall surface wiring pole panel 71 below combustion chamber connects for plain nut, can not Through electrode holder, various electrical equipments are directly connected to, direct current, mistake under-voltage are set altogether and exchange three kinds of way of outputs, while at panel Equipped with 5 spring hole scoket of 220V and 380V4 spring hole scoket, for connecting electrical equipment by plug；In combustion chamber, it is provided with detachable Wall surface socket, connect box 68 for poor contact failure, according to overcurrent principle, iron shell, iron shell is inserted according to wall surface Seat installation requirement, carry out interior welds processing, can convenient and quick three hole of installation wall surface and five spring hole scokets, connect at socket for simulating Touch hot-spot caused by bad and overcurrent；Indoor top is smoke evacuation system 66, is connect with main smoke evacuation system, and discharge burning produces Raw flue gas is discharged after carrying out purified treatment；3 inner wall two sides interval 30cm of combustion chamber has been arranged symmetrically several groups card slot 69, uses In placement load-bearing partition 67, the load-bearing partition 67 is used to carry out the arrangement of electric appliance or route.

In this specific implementation, surge tank 1, which is input to control cabinet 2, the different types of voltage of two-way, straight for simulating all the way Electric fault is flowed, another way is used for the electrical failure of analog AC；

In analog DC electric fault: alternating current is through master control protector 12, through DC control air switch 15, by interior Digital control implement, rectifier start button 18, rectifier stop button 19,20 parallel control of rectifier power on buttons are set, it can be real simultaneously Existing numerical control is controlled and is manually controlled, 380V electric main, and A phase is input to 315 type dc welding machines 21, the ballast control with B phase Device I 16 processed, ballast controller II 17 export control button as the electric current of 315 type dc welding machines 21, arrive for realizing 40A The DC current of 240A exports, and the ballast controller I 16, ballast controller II 17 connect the connecting column slot B60 in combustion chamber 3 With 61, direct-current short circuit failure and the simulation of direct current overcurrent fault are realized；

When the electrical failure of analog AC: alternating current accesses pressure regulator 4, by pressure regulator A phase, B phase through master control protector 12 Control protector 13 is exchanged in the voltage input to control cabinet 2 exported with C phase, manually controls surge tank boosting start button 36 With surge tank reduced-voltage starting button 38, digital control implement built in parallel connection controls boosting starter and reduced voltage starter, boosts through surge tank Start indicator lamp 37 and surge tank reduced-voltage starting indicator light 39 show voltage regulator operation state, while showing process control and manually Control, the needs that A phase, B phase and C phase are simulated according to electric fault, distribution setting as follows:

First is that A phase is input to JL-500A type AC welding set A22 with B phase, passes through digital control implement control for simulating single-phase short circuit The motor 7 of pressure regulator 4 processed rotates, and A phase and B voltage between phases is adjusted within the scope of safe voltage, by JL-500A type AC welding set After current lifting device start button 40 and current lifting device stop button 41 in the control terminal and control panel of A22 current lifting device connect, and even Built-in digital control implement is connected, to realize JL- by current lifting device start button 40, current lifting device stop button 41 and built-in digital control implement The control of 500A type AC welding set A22 powers on indicator light 42 by the current lifting device of setting and shows JL-500A type AC welding set A22 Working condition, to control AC welding set A output, analog AC single-phase earthing fault and list in terms of voltage, two, electric current The overcurrent fault of root conducting wire, built-in clearing device, pressure regulator voltage is zeroed after single experiment, prevents electric shock accidents；

Second is that the overvoltage/undervoltage for electrical equipment is tested, A phase, B phase and C phase are through isolating transformer 24, transformation ratio 1: 1.5, booster start button 27 is arranged in the voltage of exportable alternate peak 660A measured value, leading portion, and setting two-step evolution is protected Program setting up password and switch initiation key are protected, non-special messenger can not start, while connect scram button 26, be used for special circumstances Under, emergency braking is same to connect booster stop button 28 and built-in clearing device, and connection boosting indicator light 29 prompts boosting It is carrying out, A phase, B phase, C phase introduces combustion chamber respectively and corresponds to binding post, connects electrical equipment, is arranged at control panel outer Binding post is connect, is A phase booster output wiring terminal 33, B phase booster output wiring terminal 32, C phase booster output connection respectively Three-phase external socket 34, the two-phase external socket 35 of column 31 and N phase booster output wiring terminal 30 and adjustable voltage, it is main The various connections of bulky equipment are directed to, realize the overvoltage/undervoltage fault simulation of plurality of devices；

Third is that two-phase AC fault is simulated, on the basis of A phase inputs JL-500A type AC welding set A22 with B phase, by B phase JL-500A type AC welding set B23 is inputted with C phase, 2 JL-500A type AC welding set output both ends connect with load resistance 70, lead to The voltage that pressure regulator 4 controls A phase, B phase and C phase is crossed, 70 interface of load resistance is replaced, adjusts resistance sizes, realizes two-phase exchange Overcurrent fault induces short trouble experiment simulation；

Fourth is that 220V voltage output will be arranged to be external convenient for follow-up data recording equipment, lighting apparatus on control panel Two AC220V sockets 14 be directly connected to A phase and N phase, consider certain extreme conditions, alternating current 220V direct short-circuit, by A phase and N It is mutually introduced directly into combustion chamber, front end setting mechanical lock is spaced apart 43, and encrypted code is protected in program, and layman can not start；

Occurrence condition can be arranged in above-mentioned fault simulation route by program, and voltage and current is arranged in internal wiring corresponding position High-speed collection card 1.5 × 10⁴Hz, real-time display collection voltages curent change, internal processes record and generate EXCEL document.

This specific implementation realizes the short circuit of single device analog, overcurrent, contact overheat, owes a variety of electric wires such as over-voltage Road and equipment fault are, it can be achieved that mutual induction conversion between electric fault；Realize the mould of the deficient over-voltage experiment of electrical equipment Quasi-, the settable 0V~660V of ceiling voltage, maximum power really simulation can prepare electrical appliance in deficient over-voltage up to 80KW When failure trace.Realize high speed measurement, storage and the real-time display of transient voltage electric current, acquisition speed up to 1.5 × 10⁴Hz, inside realize that software control, equipment operation realize Modularized digital control；Provided with a variety of connection types, combustion chamber Interior space is big, and flexible layout is arranged, can be according to ignition condition needs, and the reasonable dosage that combustible is arranged can carry out TV The fault simulation of the common household electrical appliance such as machine, air-conditioning, refrigerator.

Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodiment Sign can be arbitrarily combined with each other.

Claims (4)

1. a set of electrical fire fault simulation and trace preparation facilities, it is characterised in that: including surge tank (1), control cabinet (2) and Combustion chamber (3)；

1 power of setting is 80KW in the surge tank (1), and the pressure regulator (4) that adjustable voltage range is 0 to 450V passes through It controls motor (7) rotating link chain (8) and drives three phase voltage regulating slide plate (6) sliding, realize the step-less adjustment of voltage, voltage is through transformation To control cabinet (2), the housing face-plate of surge tank (1), which is equipped with, is respectively used to display A, B, C phase surge tank input electricity for device (5) output The instrument display (9,10,11) of pressure condition；

Digital control implement, built-in clearing device, master control protector (12), exchange control protector are disposed in the control cabinet (2) (13), two AC220V sockets (14), DC control air switch (15), ballast controller I (16), ballast controller II (17), rectifier, rectifier start button (18), rectifier stop button (19), rectifier power on buttons (20), 315 types are straight Galvanic electricity welding machine (21), JL-500A type AC welding set A (22), JL-500A type AC welding set B (23), isolating transformer (24), row Cigarette switch (25), scram button (26), booster start button (27), booster stop button (28), boosting indicator light (29), N phase booster output wiring terminal (30), C phase booster output wiring terminal (31), B phase booster output wiring terminal (32), A phase liter Depressor output wiring terminal (33), three-phase external socket (34), two-phase external socket (35), surge tank boosting start button (36), Surge tank is boosted start indicator lamp (37), surge tank reduced-voltage starting button (38), surge tank reduced-voltage starting indicator light (39), is flowed up Device start button (40), current lifting device stop button (41), current lifting device power on indicator light (42), mechanical lock is spaced apart (43), the control Input indicator (46), B are exchanged equipped with surge tank input voltage (44), surge tank input current (45), A phase above cabinet (2) processed Mutually exchange input indicator (47), C phase exchange input indicator (48), surge tank output voltage (49), surge tank output electric current (50), boost button does not reset acousto-optic instruction (51), decompression button does not reset Acoustooptic indicator (52), for showing booster work Make the booster output voltage (53) of state, booster input current (54), A phase booster input indicator (55), B phase to boost Device input indicator (56), C phase booster input indicator (57) and display (58)；

It is equipped in the combustion chamber:

Connecting column slot A (72,59), for connecting overvoltage/undervoltage experiment；

Connecting column slot B (60,61) is tested for direct-current short circuit and overcurrent, is connected with 315 type dc welding machine (21) output ends It connects；

Connecting column slot C (62,63) is tested for single phase ac short circuit and overcurrent, even with JL-500A type AC welding set A (22) It connects；

Connecting column slot D (64,65) is tested for line to line fault and overcurrent, connects JL-500A type AC welding set A (22) and JL- 500A type AC welding set B (23) each one end is connected through load resistance (70)；

The power output terminal of the combustion chamber (3) is that copper bores the connection of column card slot, meets 10mm²The external electric weld handle of multicore copper conductor is used In the various conducting wires of connection and electrical appliance；Wall surface wiring pole panel (71) below combustion chamber connects for plain nut, can be without weldering Being directly connected to various electrical equipments, direct current be arranged altogether, crosses and under-voltage and exchanges three kinds of way of outputs, while being equipped at panel 5 spring hole scoket of 220V and 380V4 spring hole scoket, for connecting electrical equipment by plug；In combustion chamber, it is provided with dismountable wall Face socket, for poor contact failure connection box (68), according to overcurrent principle, iron shell, according to wall surface socket installation requirement, Carry out interior welds processing, can convenient and quick three hole of installation wall surface and five spring hole scokets, for simulating poor contact and mistake at socket Hot-spot caused by electric current；Indoor top is smoke evacuation system (66), is connect with main smoke evacuation system, the cigarette that discharge burning generates Gas is discharged after carrying out purified treatment；Combustion chamber (3) inner wall two sides interval 30cm has been arranged symmetrically several groups card slot (69), is used for It disposes load-bearing partition (67), the load-bearing partition (67) is used to carry out the arrangement of electric appliance or route.

2. a set of electrical fire fault simulation as described in claim 1 and trace preparation facilities, it is characterised in that: surge tank (1) being input to control cabinet (2) has the different types of voltage of two-way, is used for analog DC electric fault all the way, and another way is used for mould Quasi- alternating-current electric failure.

3. a set of electrical fire fault simulation as described in claim 1 and trace preparation facilities, it is characterised in that: the burning The size of room (3) is 1640mm × 1000mm × 2374mm, and the load-bearing partition (67) uses the non-ignitable electricity of insulation of 10mm thickness Wood prevents from leaking electricity.

4. a set of electrical fire fault simulation as described in claim 1 and trace preparation facilities, it is characterised in that: the ballast The adjustable range of controller I (16) be 40A to 240A, ballast controller II (17) be used for superimposed current, maximum amplification 40A, from And realize the DC current output of 40A to 240A.