CN204631214U - General overcurrent and ground(preference) relay proving installation - Google Patents
General overcurrent and ground(preference) relay proving installation Download PDFInfo
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Abstract
The utility model relates to a kind of general overcurrent and ground(preference) relay proving installation, mainly comprises front end processor, testing source, acquisition control device, Switching Power Supply.Front end processor is connected with testing source and acquisition control device respectively; test case is converted into control command by front end processor; be sent to testing source and acquisition control device; testing source and acquisition control device and general overcurrent and ground(preference) relay are connected; export direct current test signal and AC test signals; the output signal that acquisition control device receives general overcurrent and ground(preference) relay is carried out Treatment Analysis and exports front end processor to; and the AC test signals that collecting test signal source exports, Switching Power Supply is connected with general overcurrent and ground(preference) relay.General overcurrent and ground(preference) relay integrated testing overall process, without the need to human attendance, provide the device for general overcurrent and ground(preference) relay robotization and intelligent test.
Description
Technical field
The utility model relates to a kind of nuclear power field, more particularly, relates to a kind of general overcurrent and ground relaying device proving installation.
Background technology
General overcurrent and ground(preference) relay series fastener are the important fasteners of nuclear power station circuit protection; be mainly used in the radiant type electrical network of direct ground connection in electric system, resistance eutral grounding or impedance earth; general overcurrent and ground(preference) relay relay are made up of power panel, mainboard and relay board, have overcurrent protection and overload protection function.Device is after long time continuous working, and easy hydraulic performance decline, and then the reliability having influence on whole nuclear power station circuit protection system, form dangerous to the safety and stability of whole nuclear power station network system.Thus, the reliability ensureing general overcurrent and ground(preference) relay work is necessary.
The detection of current nuclear power station to general overcurrent and ground(preference) relay is generally passed through manually to test; require high to the specialized capability of tester, and test is general more than tens hours, tester must be at the scene in the meantime; add great workload, and easily make mistakes.
Utility model content
The technical problems to be solved in the utility model is; the purpose of this utility model is to provide general overcurrent and ground(preference) relay proving installation, realizes test signal in test process and automatically accesses the automation collection outputed signal with general overcurrent and ground(preference) relay proving installation.
In general overcurrent described in the utility model and ground(preference) relay proving installation, comprise front end processor, testing source, acquisition control device, Switching Power Supply, described front end processor is connected with described testing source and described acquisition control device respectively, and described testing source is connected with described acquisition control device;
Described front end processor, for test case is converted into control command, and is sent to described testing source and described acquisition control device by described control command, and the response signal data that described acquisition control device is uploaded is stored and on give;
Described testing source comprises relay protection tester and adjustable power of direct current, described relay protection tester, connect described acquisition control device and described general overcurrent and ground(preference) relay respectively, for output AC test signal, described adjustable power of direct current is connected with described acquisition control device, for exporting direct current test signal;
Described acquisition control device, described general overcurrent and ground(preference) relay is inputed to for gathering described AC test signals and controlling described direct current test signal, and receive the output signal of described general overcurrent and ground(preference) relay and described output signal is processed into described response signal data, and be uploaded to described front end processor;
Described Switching Power Supply, is connected to general overcurrent and ground(preference) relay, and for providing working power for described general overcurrent and ground(preference) relay.
Preferably; described test case comprises the signal type of described relay protection tester and described adjustable power of direct current, start-up time, stand-by time parameter, and the type of described output signal that gathers of described acquisition control device and general overcurrent and ground(preference) relay input pin, output pin parameter.
Preferably; described acquisition control device comprises master control borad, digital output module, analog input, On-off signal plate; described master control borad is connected with described digital output module, described analog input, described On-off signal plate respectively; described digital output module is connected with described adjustable power of direct current; described analog input is connected with relay protection tester, and described digital output module, described analog input, described On-off signal plate are connected with described general overcurrent and ground(preference) relay respectively.
Preferably; described master control borad is used for the control command according to the described front end processor received; control described digital output module and described direct current test signal is inputed to described general overcurrent and ground(preference) relay; control described analog input gather described AC test signals and export described master control borad to; and control described On-off signal plate and export the described output signal of described general overcurrent and ground(preference) relay to described master control borad; and described output signal is processed into described response signal data, and export front end processor to.
Preferably, described digital output module, for receiving the control command of described master control borad, controlling described direct current test signal and inputing to described general overcurrent and ground(preference) relay.
Preferably, described analog input, gathers described AC test signals for the described control command receiving described master control borad, and exports described AC test signals to described master control borad.
Preferably, described On-off signal plate, for receiving the described control command of described master control borad, exports described output signal to described master control borad.
Preferably, described general overcurrent and ground(preference) relay proving installation also comprise background host computer and human-computer interaction module, and described front end processor is connected with background host computer, and described background host computer is connected with human-computer interaction module; Described front end processor, for response signal data is uploaded to described background host computer, described background host computer, described human-computer interaction module is exported to for described response signal data is converted into oscillogram, described human-computer interaction module, for the oscillogram that input test use-case and the described background host computer of display input.
Preferably, described adjustable power of direct current and described Switching Power Supply are connected with temperature and humidity filed version, and described temperature and humidity filed plate is for detecting humiture and the described Switching Power Supply signal of collection and described direct current test signal in described test cabinet.
Preferably, described front end processor, described adjustable power of direct current, described acquisition control device, described Switching Power Supply and described general overcurrent and ground(preference) relay are arranged in test cabinet.
Preferably, described test cabinet inside is provided with interlayer, and described front end processor, described Switching Power Supply, described acquisition control device, described general overcurrent and ground(preference) relay are separately positioned in corresponding interlayer.
Preferably, described test cabinet is provided with well heater and fan, described well heater, and for carrying out heat temperature raising to described test cabinet, described fan, lowers the temperature for described test cabinet.
Preferably, the three-phase alternating current signal of described AC test signals to be amplitude be 1A.
Preferably, described direct current test signal is 125V d. c. voltage signal; And/or described Switching Power Supply is 24V direct supply.
Implement general overcurrent of the present utility model and ground(preference) relay proving installation, at least there is following beneficial effect: by front end processor test case be converted into control command and export control command to testing source and acquisition control device, control testing source and test signal is provided, wherein adjustable power of direct current exports direct current test signal, relay protection tester output AC test signal, acquisition control device controls direct current test signal and inputs to general overcurrent and ground(preference) relay, relay protection tester is connected with general overcurrent and ground(preference) relay, directly export AC test signals to general overcurrent and ground(preference) relay, gather the output signal test overall process of general overcurrent and ground(preference) relay without the need to human attendance, provide general overcurrent and ground(preference) relay plant automation, intelligent functions is tested.Well solve the drawback of Traditional Man method of testing, alleviate the workload of tester, improve testing efficiency, the personnel that simultaneously decrease neglect some problems caused.
Further, on-line monitoring when can realize long, can carry out hommization displaying and prompting to test result; simultaneously; device adopts background host computer storage mode, the data such as detecting information, general overcurrent and ground(preference) relay information, test result is carried out standardized administration, is convenient to information searching.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the general overcurrent of the utility model and ground(preference) relay proving installation;
Fig. 2 is the test philosophy figure of the general overcurrent of the utility model and ground(preference) relay proving installation.
Embodiment
As shown in Figure 1, general overcurrent and ground(preference) relay proving installation are by front end processor 102, testing source 103, acquisition control device 104, Switching Power Supply 108, background host computer 106 and human-computer interaction module 107 form, front end processor 102 and testing source 103, acquisition control device 104, background host computer 106 connects, background host computer 106 is connected with human-computer interaction module 107, wherein testing source 103 comprises relay protection tester 1031 and adjustable power of direct current 1032, adjustable power of direct current 1032 is connected with acquisition control device 104, relay protection tester 1031 is connected with acquisition control device 104 and general overcurrent and ground(preference) relay 105 respectively.
By human-computer interaction module 107 input test use-case, human-computer interaction module 107 exports test case to background host computer 106, background host computer 106 exports test case to front end processor 102, test case is converted into control command by front end processor 102, test case comprises relay protection tester 1031, the signal type of adjustable DC power supply 1032 and adjustable DC power supply 108, start-up time, the output signal type of stand-by time parameter and collection and the input pin of general overcurrent and ground(preference) relay 105, output pin parameter, control command comprises power supply pumping signal configuration order, the order of power supply pumping signal switch control rule, output signal acquisition channel configuration order, wherein power supply pumping signal configuration order exports testing source 103 to, the order of power supply pumping signal switch control rule and output signal acquisition channel configuration order export acquisition control device 104 to.Front end processor 102 is also for receiving response signal data that acquisition control device 104 uploads and exporting background host computer 106 to, and response signal data is converted into oscillogram by background host computer 106, is shown by human-computer interaction module.
Acquisition control device 104 is made up of master control borad 1041, digital output module 1042, analog input 1043, On-off signal plate 1044, wherein master control borad model is RP7001, On-off signal plate 1044 model is RP7301, digital output module 1042 model is RP7321, and analog input 1043 model is RP7105.Master control borad 1041 is connected with digital output module 1042, analog input 1043 and On-off signal plate 1044 respectively.Digital output module 1042, analog input 1043 are connected with general overcurrent and ground(preference) relay 105 with On-off signal plate 1044.Preferably, digital output module 1042 can comprise switch CJ21 and CJ25 shown in Fig. 2.Preferably, analog input 1043 can comprise three shown in Fig. 2 inductance IO8, IO9 and IO10 parallel with one another, and the electric current flow through on these three inductance is respectively Ia, Ib and Ic.Preferably, On-off signal plate 1044 can comprise five light emitting diodes K176, K177, K178, K179, K180 and the K181 parallel with one another shown in Fig. 2.
Testing source 103 receives the power supply pumping signal configuration order that front end processor 102 exports, adjustment relay protection tester 1031 output AC test signal, adjustable power of direct current 1032 exports direct current test signal, wherein relay protection tester 1031 output amplitude is the three-phase alternating current signal of 1A, and adjustable power of direct current 1032 exports 125V d. c. voltage signal.Switching Power Supply 108 is 24V direct supply, for exporting 24V d. c. voltage signal.
Master control borad 1041 in acquisition control device 104 receives the order of power supply pumping signal switch control rule and the output signal acquisition channel configuration order of front end processor 102 output, and export the order of power supply pumping signal switch control rule to digital output module 1042, export output signal acquisition channel configuration order to On-off signal plate 1044.The 125V d. c. voltage signal that adjustable power of direct current 1032 exports by power supply pumping signal switch control rule order gauge tap amount output board 1042 inputs to general overcurrent and ground(preference) relay 105 by the input pin of general overcurrent and ground(preference) relay 105; the amplitude that output signal acquisition channel configuration order control simulation amount tablet 1043 gathers relay protection tester 1031 output is the three-phase alternating current signal of 1A, and gauge tap amount tablet 1044 is gathered the on-off model of general overcurrent and ground(preference) relay 105 output by the output pin of general overcurrent and ground(preference) relay 105 and exported to master control borad 1041.The on-off model process of collection is formed response signal data and is uploaded to front end processor 102 by master control borad 1041.
Front end processor 102, adjustable power of direct current 1032 in testing source 103, acquisition control device 104, Switching Power Supply 108, general overcurrent and ground(preference) relay 105, temperature and humidity filed plate 109 is positioned in test cabinet 101, and test cabinet 101 is provided with interlayer, by front end processor 102, adjustable power of direct current 1032 in testing source 103, acquisition control device 104, Switching Power Supply 108, general overcurrent and ground(preference) relay 105, temperature and humidity filed plate 109 is placed in the different compartments of interlayer partition respectively, avoid front end processor 102, adjustable power of direct current 1032, acquisition control device 104, Switching Power Supply 108, general overcurrent and ground(preference) relay 105, influence each other in the course of the work between temperature and humidity filed plate 109, and go back having heaters and fan (not marking) in test cabinet 101, well heater is used for test cabinet 101 heat temperature raising, fan is used for lowering the temperature to test cabinet 101, well heater and fan are all pass through Long-distance Control.
Switching Power Supply 108 provides working power for general overcurrent and ground(preference) relay 105.Preferably, temperature and humidity filed plate 109 can comprise inductance IO0 as shown in Figure 2 and inductance IO1.
Further, for Fig. 2, relay protection tester 1031 output amplitude is the three-phase alternating current signal of 1A, and adjustable power of direct current 1032 output amplitude is the d. c. voltage signal of 125V.The digital output module 1042 of acquisition control device 104 is linked on the pin 61#/62# of general overcurrent and ground(preference) relay 105 by the 125V d. c. voltage signal that adjustable power of direct current 1032 exports by channel C J21 and channel C J25, the amplitude that relay protection tester 1031 exports is the three-phase alternating current signal of 1A and the 24V d. c. voltage signal of Switching Power Supply 108 output, be linked into the input pin 2#/1# of general overcurrent and ground(preference) relay 105 respectively, 5#/4#, 8#/7# and input pin 65#/66#, 71#/72#, 74#/75#, 77#/78#, 80#/81#, on 68#/69#.The positive pole of one end access Switching Power Supply 108 of input pin 65#/66#, 71#/72#, 74#/75#, 77#/78#, 80#/81#, 68#/69#, the other end is linked into KI76, KI77, KI78, KI79, KI80, KI81 passage of On-off signal plate 1044 respectively.On-off signal plate 1044 is made up of optocoupler array; diode is commoncathode; once the mainboard of general overcurrent and ground(preference) relay 105 or general overcurrent and ground(preference) relay 105 break down; optocoupler can be produced export; thus the output signal collected on general overcurrent and ground(preference) relay device 105, output signal as on-off model.
In test process, the amplitude that the analog input 1043 pairs of relay protection testers 1031 of acquisition control device 104 inside export is that the three-phase alternating current signal of 1A gathers, the 24V d. c. voltage signal that the 125V d. c. voltage signal of the output of temperature and humidity filed plate 109 pairs of adjustable power of direct current 1032 and Switching Power Supply 108 export also can carry out collection inspection, to ensure the accuracy of test result.In order to the three-phase alternating current signal that the amplitude exported relay protection tester 1031 is 1A, the 24V d. c. voltage signal that the 125V d. c. voltage signal that adjustable power of direct current 1032 exports, Switching Power Supply 108 export gathers, relay protection tester 1031 is connected with analog input 1043, and the A phase in the three-phase alternating current of the 1A that relay protection tester 1031 exports, B phase, C phase current signal are by IO8, IO9 and IO10 channel acquisition of analog input 1043 inside.In addition, the humiture situation of test cabinet 101 inside is detected by temperature and humidity filed plate 109.The 125V d. c. voltage signal that adjustable power of direct current 1032 exports is by IO0 channel transfer on temperature and humidity filed plate 109, and the 24V d. c. voltage signal that Switching Power Supply 108 exports is by IO1 channel transfer on temperature and humidity filed plate 109.
Concrete general overcurrent and ground(preference) relay test job principle as described below, comprise the steps: that front end processor 102 receives test case particularly, and test case be converted into control command and be sent to testing source 103 and acquisition control device 104; Acquisition control device 104 receives control command, controls testing source 103 and direct current test signal is exported to general overcurrent and ground(preference) relay 105, and testing source 103 output AC test signal is to general overcurrent and ground(preference) relay 105 simultaneously; Acquisition control device 104 receives the output signal of general overcurrent and ground(preference) relay 105, and output signal is converted into response signal data and is uploaded to front end processor 102.
Be connected with front end processor 102, testing source 103 and described general overcurrent and ground(preference) relay 105 by acquisition control device 104, front end processor 102 is connected with testing source 103, and Switching Power Supply 108 is connected with general overcurrent and ground(preference) relay 105.Open the switch of front end processor 102, testing source 103, Switching Power Supply 108, acquisition control device 104 and general overcurrent and ground(preference) relay 105; confirm connect intact between front end processor 102, testing source 103, Switching Power Supply 108, acquisition control device 104 and general overcurrent and ground(preference) relay 105 and can normally work, confirm to connect and intactly rear initialization operation is carried out to general overcurrent and ground(preference) relay 105.
Select the test case required for test by human-computer interaction module 107, and export front end processor 102 to.Front end processor 102 receives described test case general and described test case is converted into control command and is sent to testing source 103 and acquisition control device 1047.
Acquisition control device 104 receives control command, controls testing source 103 and direct current test signal is exported to general overcurrent and ground(preference) relay 105, and testing source 103 output AC test signal is to general overcurrent and ground(preference) relay 105 simultaneously.Testing source 103 receives control command adjustment relay protection tester 1031 and configures the three-phase alternating current signal that amplitude is 1A; adjustable power of direct current configuration 125V d. c. voltage signal; acquisition control device 104 receives control command; control 125V d. c. voltage signal exports described general overcurrent and ground(preference) relay 105 to, and relay protection tester 1031 output amplitude simultaneously in testing source 103 is that the three-phase alternating current test signal of 1A is to described general overcurrent and ground(preference) relay 105.By the AC test signals that the relay protection tester 1031 in acquisition control device 104 collecting test signal source 103 exports.
Acquisition control device 104 receives the output signal of general overcurrent and ground(preference) relay 105, and output signal is converted into response signal data and is uploaded to front end processor 102.Acquisition control device 104 receives the output signal of general overcurrent and ground(preference) relay 105 and output signal is converted into response signal data and is uploaded to front end processor 102.
Front end processor 102 exports described response signal data to background host computer 106, and described response signal data is converted into oscillogram and is shown by human-computer interaction module 107 by background host computer 106.
By the humiture information of temperature and humidity filed plate 109 collecting test rack 101 inside and the signal of Switching Power Supply 108 and the signal of adjustable power of direct current 1032.
After test experiments starts, testing source 103 and acquisition control device 104 perform test process according to test case, the output signal of general overcurrent and ground(preference) relay 105 in test process, the AC test signals that relay protection tester 1031 exports, the direct current test signal that adjustable power of direct current 1032 exports, the humiture of test cabinet 101 inside is all shown by human-computer interaction module 107, output pin 65#/the 66# of general overcurrent and ground(preference) relay 105, 71#/72#, 74#/75#, 77#/78#, 80#/81#, the on-off switch amount of 68#/69# is described by the signal lamp of different colours, green representative is closed, red representative disconnects, the amplitude of the relay protection tester 1031 collected is the three-phase alternating current signal of 1A and 125V d. c. voltage signal, the analog data of 24V d. c. voltage signal is shown by oscillogram after waveform processing.Human-computer interaction module 107 also can show the various informations of general overcurrent and ground(preference) relay 105 test process simultaneously, such as test cabinet 101 service condition, test process information, general overcurrent to be measured and ground(preference) relay 105 test mode and fault alarm information etc.
In sum, by front end processor 102 test case be converted into control command and control command exported to testing source 103 and acquisition control device 104, controlling testing source 103 provides test signal to comprise direct current test signal and AC test signals, acquisition control device 104 controls direct current test signal and inputs to general overcurrent and ground(preference) relay 105, contrasted by the output signal and standard signal that gather general overcurrent and ground(preference) relay 105, judge the performance of general overcurrent and ground(preference) relay 105, test overall process is without the need to human attendance, on-line monitoring when can realize long, hommization displaying and prompting can be carried out to test result, provide general overcurrent and ground(preference) relay plant automation, intelligent functions testing and analysis method and system.Well solve the drawback of Traditional Man method of testing; alleviate the workload of tester; improve testing efficiency; the personnel that simultaneously decrease neglect some problems caused; simultaneously; device adopts background host computer 106 storage mode, the data such as detecting information, general overcurrent and ground(preference) relay information, test result is carried out standardized administration, is convenient to information searching.
Understandable, above embodiment only have expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims; It should be noted that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, independent assortment can be carried out to above-mentioned technical characterstic, can also make some distortion and improvement, these all belong to protection domain of the present utility model; Therefore, all equivalents of doing with the utility model right and modification, all should belong to the covering scope of the utility model claim.
Claims (10)
1. a general overcurrent and ground(preference) relay proving installation, it is characterized in that, comprise front end processor (102), testing source (103), acquisition control device (104), Switching Power Supply (108), described front end processor (102) is connected with described testing source (103) and described acquisition control device (104) respectively, and described testing source (103) is connected with described acquisition control device (104);
Described front end processor (102), for test case is converted into control command, and described control command is sent to described testing source (103) and described acquisition control device (104), and the response signal data that described acquisition control device (104) is uploaded is stored and on give;
Described testing source (103) comprises relay protection tester (1031) and adjustable power of direct current (1032), described relay protection tester (1031), connect described acquisition control device (104) and described general overcurrent and ground(preference) relay (105) respectively, for output AC test signal, described adjustable power of direct current (1032) is connected with described acquisition control device (104), for exporting direct current test signal;
Described acquisition control device (104), described general overcurrent and ground(preference) relay (105) is inputed to for gathering described AC test signals and controlling described direct current test signal, and receive the output signal of described general overcurrent and ground(preference) relay (105) and described output signal is processed into described response signal data, and be uploaded to described front end processor (102);
Described Switching Power Supply (108), is connected to general overcurrent and ground(preference) relay (105), and for providing working power for described general overcurrent and ground(preference) relay (105).
2. general overcurrent according to claim 1 and ground(preference) relay proving installation; it is characterized in that; described test case comprises the signal type of described relay protection tester (1031) and described adjustable power of direct current (1032), start-up time, stand-by time parameter, and the described output signal type that gathers of described acquisition control device (104) and general overcurrent and ground(preference) relay (105) input pin, output pin parameter.
3. general overcurrent according to claim 1 and ground(preference) relay proving installation, it is characterized in that, described acquisition control device (104) comprises master control borad (1041), digital output module (1042), analog input (1043), On-off signal plate (1044), described master control borad (1041) respectively with described digital output module (1042), described analog input (1043), described On-off signal plate (1044) connects, described digital output module (1042) is connected with described adjustable power of direct current (1032), described analog input (1043) is connected with relay protection tester (1031), described digital output module (1042), described analog input (1043), described On-off signal plate (1044) is connected with described general overcurrent and ground(preference) relay (105) respectively,
Described master control borad (1041), for the described control command according to reception, control described digital output module (1042) and described direct current test signal is inputed to described general overcurrent and ground(preference) relay (105), control described analog input (1043) gather described AC test signals and export described master control borad (1041) to, and control described On-off signal plate (1044) and export the described output signal of described general overcurrent and ground(preference) relay (105) to described master control borad (1041), and described output signal is processed into described response signal data, and export front end processor (102) to,
Described digital output module (1042), for receiving the described control command of described master control borad (1041), controlling described direct current test signal and inputing to described general overcurrent and ground(preference) relay (105);
Described analog input (1043), gathers described AC test signals for the described control command receiving described master control borad (1041), and exports described AC test signals to described master control borad (1041);
Described On-off signal plate (1044), for receiving the described control command of described master control borad (1041), exports described master control borad (1041) to by described output signal.
4. general overcurrent according to claim 1 and ground(preference) relay proving installation, it is characterized in that, described general overcurrent and ground(preference) relay (105) proving installation also comprise background host computer and human-computer interaction module (107), described front end processor (102) is connected with background host computer (106), and described background host computer (106) is connected with human-computer interaction module (107);
Described front end processor (102), for being uploaded to described background host computer (106) by response signal data;
Described background host computer (106), exports described human-computer interaction module (107) to for described response signal data being converted into oscillogram;
Described human-computer interaction module (107), for the oscillogram that input test use-case and the described background host computer of display (106) input.
5. general overcurrent according to claim 3 and ground(preference) relay proving installation; it is characterized in that; described adjustable power of direct current (1032) and described Switching Power Supply (108) are connected with temperature and humidity filed plate (109), and described temperature and humidity filed plate (109) is for detecting described test cabinet (101) interior humiture and gathering described Switching Power Supply (108) signal and described direct current test signal.
6. general overcurrent according to claim 1 and ground(preference) relay proving installation; it is characterized in that, described front end processor (102), described adjustable power of direct current (1032), described acquisition control device (104), described Switching Power Supply (108) and described general overcurrent and ground(preference) relay (105) are arranged at (101) in test cabinet.
7. general overcurrent according to claim 6 and ground(preference) relay proving installation; it is characterized in that; described test cabinet (101) inside is provided with interlayer, and described front end processor (102), described Switching Power Supply (108), described acquisition control device (104), described general overcurrent and ground(preference) relay (105) are separately positioned in corresponding interlayer.
8. the general overcurrent according to claim 6 or 7 and ground(preference) relay proving installation, is characterized in that, described test cabinet (101) is provided with well heater and fan;
Described well heater, for carrying out heat temperature raising to described test cabinet (101);
Described fan, lowers the temperature for described test cabinet (101).
9. general overcurrent according to claim 1 and ground(preference) relay proving installation, is characterized in that, the three-phase alternating current signal of described AC test signals to be amplitude be 1A.
10. general overcurrent according to claim 1 and ground(preference) relay proving installation, is characterized in that, described direct current test signal is 125V d. c. voltage signal; And/or described Switching Power Supply (108) is 24V direct supply.
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