CN202949157U - Low-voltage test car - Google Patents
Low-voltage test car Download PDFInfo
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- CN202949157U CN202949157U CN 201220548871 CN201220548871U CN202949157U CN 202949157 U CN202949157 U CN 202949157U CN 201220548871 CN201220548871 CN 201220548871 CN 201220548871 U CN201220548871 U CN 201220548871U CN 202949157 U CN202949157 U CN 202949157U
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Abstract
An embodiment of the utility model discloses a low-voltage test car. The low-voltage test car comprises a test car body, a current phase shift device, a drawer unit inspection device and a power supply, wherein the current phase shift device is used for outputting power factor adjustable sensitive or compatible reactive sampling currents to simulate a field load state during operation of a power distribution cabinet so as to detect whether the automatic switching condition of an reactive power compensation device is normal; the drawer unit inspection device is used for inspecting electrical and mechanical performances of a drawer unit; and the power supply is used for providing a working power supply for the current phase shift device and the drawer unit inspection device. By means of the low-voltage test car, delivery inspection for the drawer unit can be performed efficiently, the power factor adjustable sensitive or compatible reactive sampling current can be output, and the automatic switching condition of the reactive power compensation device can be detected through matching with the output sampling voltage.
Description
Technical field
The utility model relates to low-voltage complete switch equipment and low-voltage reactive power compensation device, relates in particular to the low pressure test (LPT) car for low-voltage complete switch equipment and low-voltage reactive power compensation device exfactory inspection.
Background technology
Impact along with increase, climatic environment and the power grid quality of power load, the client is more and more higher to the requirement of the function of low-voltage complete switch equipment and low-voltage reactive power compensation device and secure context, and the processing duration that requires is also shorter and shorter, so there have a good inspection machine to complete the exfactory inspection of products such as low-voltage complete switch equipment and low-voltage reactive power compensation device to be particularly important faster and betterly.
At present, producer's routine inspection equipment used of production low-voltage complete switch equipment and low-voltage reactive power compensation device has many defectives on function:
(1) general equal no current phase shift function, whether the automatic switching situation that namely can not detect reactive power compensation device is normal;
(2) without the device of complete check power distribution cabinet drawer unit function;
(3) the inspection machine no current output function that has;
(4) the inspection machine output function that has can not apply simultaneously; And
(5) inspection machines often can only be completed a kind of test of Interventions Requested, for the check of completing a product need to connect many inspection machines simultaneously, perhaps product is tested to connecing next inspection machine after being completed of product at an inspection machine, checkability is low again.
For example, Chinese utility model patent CN201360105Y discloses a kind of inspection vehicle for low-voltage switch cabinet drawers, and it comprises the Comprehensive Control cabinet that collection control panel is installed, and on collection control panel, the Instrumentation and Control key is installed.In this inspection vehicle for low-voltage switch cabinet drawers, Comprehensive Control cabinet one side is provided with connected power distribution cabinet, and both circuit are connected, and Comprehensive Control cabinet and power distribution cabinet bottom is equipped with pulley; And the power distribution cabinet top is provided with the drawer test cabinet, and after the drawer test cabinet, side plate is provided with the socket that plugs together mutually with the drawer electrode.The inspection vehicle for low-voltage switch cabinet drawers of the prior art only can be tested to the wiring correctness of drawer of low-voltage switch cabinet, phase sequence, mechanical test, switch trip etc., it does not have the electric current phase shift function, thereby whether its automatic switching situation that can't detect reactive power compensation device is normal.
The utility model content
Consider the problems referred to above of prior art, the utility model provides a kind of low pressure test (LPT) car that is applicable to low-voltage complete switch equipment and low-voltage reactive power compensation device exfactory inspection.
According to an embodiment of the present utility model, this low pressure test (LPT) car comprises: the instruction carriage main body; Whether the electric current phase shifting equipment is normal thereby the on-the-spot load condition when being used for the adjustable perception of output power factor or capacitive reactive power sampling current and simulating the power distribution cabinet operation detects the automatic switching situation of reactive power compensation device; The drawer unit verifying attachment is used for the electric and mechanical performance of drawer unit is tested; And power supply, be used for providing working power to described electric current phase shifting equipment and described drawer unit verifying attachment.
In this embodiment, the instruction carriage main body of this low pressure test (LPT) car is made by steel plate, and the supporting point of this low pressure test (LPT) car is six universal wheels, and applicability is strong, can move easily.
In this embodiment, drawer unit verifying attachment and electric current phase shifting equipment are removably mounted on described instruction carriage main body.
according to an embodiment of the present utility model, the electric current phase shifting equipment comprises short circuit overload protection device, change over switch, voltage regulator and control transformer, and wherein said short circuit overload protection device is used for change over switch, voltage regulator and control transformer etc. are carried out the short circuit overload protection; Described change over switch is configured to change the mode of connection of the primary coil of described control transformer, described voltage regulator is configured to change size and the phase place of electric current of the primary coil of described control transformer, thereby makes sampling current that the secondary coil of described control transformer exports leading or lag behind with respect to predetermined sampling voltage.
according to an embodiment of the present utility model, the drawer unit verifying attachment mainly comprises the drawer adapter, described drawer adapter is that the real work in switchgear assembly designs according to drawer unit, and described drawer unit is inserted in described drawer adapter and inserts in described switchgear assembly is identical cooperation.Described drawer unit is being plugged on described drawer adapter, just can be to the check of switching on of described drawer unit.The drawer adapter that described drawer adapter comprises for the universal drawer adapter of the drawer unit of check 1/4 modulus and 1/2 modulus and is used for checking the drawer unit of mould preparation number.The mould of the drawer unit of described mould preparation number is high from 100mm until 700mm.
according to an embodiment of the present utility model; the total input-wire installing earth leakage circuit-breaker of instruction carriage; and be furnished with scram button and warning lamp on the instrument board of instruction carriage; so that the non-reviewer around prompting and in case of emergency processing, thus improve the fail safe of checkout procedure.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises a plurality of fixedly three-phase alternating voltage output units, is used to be verified product the three-phase alternating-current supply of preferred 380 volts is provided simultaneously.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises a plurality of adjustable three-phase alternating voltage output units, is used to be verified product arbitrary alternating voltage between preferred 0-800V is provided simultaneously.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises adjustable three-phase alternating current output unit, is used to be verified the three-phase alternating current that product provides arbitrary value between preferred 0-20A.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises the adjustable DC current output unit, is used to be verified the direct current that product provides arbitrary value between preferred 0-20mA.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises the first adjustable dc voltage output unit, is used to be verified the direct voltage that product provides arbitrary value between preferred 0-10V.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises the second adjustable dc voltage output unit, is used to be verified the direct voltage that product provides arbitrary value between preferred 0-250V.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises single-phase adjustable alternating voltage output unit, is used to be verified the single phase alternating current (A.C.) voltage that product provides arbitrary value between preferred 0-250V.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises fixedly direct voltage output unit, is used for exporting the fixedly direct voltage of preferred 24V.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises the paraphase function button, switches for the phase sequence between the A phase that realizes three-phase alternating current, B phase and C phase.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises passive ammeter and voltmeter, with the button of normally-open normally-close contact and the terminal block of alternating current 220V 10A.
Whether as requested according to an embodiment of the present utility model, this low pressure test (LPT) car also has without source contact operate condition detecting unit, be used for check without source contact correct closed and disconnected.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises the binding post matrix plate, and this binding post matrix plate is disposed in the top of this low pressure test (LPT) car.
according to an embodiment of the present utility model, the binding post matrix plate comprises a plurality of binding posts, and these a plurality of binding posts are outputs of the various functions of instruction carriage, and wherein the quantity of binding post can from dozens of to hundreds of, be preferably 112.
according to an embodiment of the present utility model, the binding post matrix plate has adopted 45 designs of spending the elevation angle, has facilitated the inspector to observe and wiring, designs humanized.
It will be appreciated by those skilled in the art that above-described embodiment of the present utility model can combination in any, it is all in the scope of the utility model protection.
Characteristics of the present utility model are that checking function is many, and are easy to use, almost can satisfy all 690V and following low-voltage complete switch equipment and the requirement of low-voltage reactive power compensation device exfactory inspection, and compare with general inspection machine and have following advantage:
(1) increased the electric current phase shift function, the perception that exportable power factor is adjustable or capacitive reactive power sampling current, the automatic switching situation of the sampling voltage direct-detection reactive power compensation device of cooperation output.
(2) increased the drawer unit verifying attachment, can with tens, hundreds of in a project even thousands of drawers concentrate in together, complete exfactory inspection to drawer unit with one or several drawer unit verifying attachment of being convenient to very much inspector's check; Can watch very easily and correct mistakes after pinpointing the problems, disposable debugging is qualified, remove from platform again, especially for the drawer unit (for example 500mm, 600mm and the high drawer unit of 700mm mould) of large modulus, greatly reduced the carrying of drawer unit in checkout procedure, improved checkability, especially for the drawer unit of producing in batches.
(3) instruction carriage is all guided to all functions on contact pin of drawer unit and secondary contact pin and instruction carriage on the binding post matrix plate that adopts 45 degree elevation angle designs, and being equipped with applicable flexibly short circuit plug wire, the inspector can be combined into according to different drawing requirements the test of switching on of required circuit.
Description of drawings
Above-mentioned and other characteristics, feature, advantage and benefit of the present utility model will become more apparent by the detailed description below in conjunction with accompanying drawing, in the accompanying drawings:
Fig. 1 a-1c shows respectively stereogram, end view and the front view according to the low pressure test (LPT) car of an embodiment of the utility model;
Fig. 2 exemplarily shows the block diagram according to the low pressure test (LPT) car of an embodiment of the utility model;
Fig. 3 illustrates the block diagram according to the electric current phase shifting equipment of an embodiment of the utility model;
Fig. 4 illustrates the circuit interconnect pattern according to the electric current phase shifting equipment of an embodiment of the utility model;
Fig. 5 shows the circuit diagram according to the electric current phase shifting equipment of an embodiment of the utility model in further detail;
Connection circuit figure when Fig. 6 illustrates change over switch in electric current phase shifting equipment shown in Figure 5 and voltage regulator and adjusts;
The sampling voltage that when Fig. 7 shows in detail change over switch in electric current phase shifting equipment shown in Figure 5 and voltage regulator and adjusts, power factor meter is measured and the polar plot of sampling current; And
Fig. 8 illustrates the circuit diagram without source contact operate condition detecting unit according to the low pressure inspection vehicle of an embodiment of the present utility model.
Embodiment
Below, describe each preferred illustrative embodiment of the present utility model in detail in connection with accompanying drawing.
Referring now to Fig. 1 a-1c,, it shows respectively stereogram, end view and front view according to the low pressure test (LPT) car of preferred embodiment of the present utility model.The instruction carriage main body of this low pressure test (LPT) car is made by steel plate, and the supporting point of this low pressure test (LPT) car is six universal wheels, and applicability is strong, can move easily.
Fig. 2 illustrates the block diagram according to the low pressure test (LPT) car 20 of an embodiment of the utility model.This low pressure test (LPT) car 20 comprises instruction carriage main body (not shown); Whether electric current phase shifting equipment 220 is normal thereby the on-the-spot load condition when being used for the adjustable perception of output output power factor or capacitive reactive power sampling current and simulating the power distribution cabinet operation detects the automatic switching situation of reactive power compensation device; Drawer unit verifying attachment 230 is used for the electric and mechanical performance of drawer unit is tested; And power supply 210, be used for providing working power to described electric current phase shifting equipment 220 and described drawer unit verifying attachment 230.
As mentioned above, electric current phase shifting equipment 220 is used for realizing the electric current phase shift function.Hereinafter describe structure and operation principle according to the electric current phase shifting equipment of an embodiment of the present utility model in detail with reference to Fig. 3 and Fig. 4.
Drawer unit verifying attachment 230 mainly comprises the drawer adapter, this drawer adapter is that the real work in switchgear assembly designs according to drawer unit, and drawer unit is inserted in this drawer adapter and inserts in switchgear assembly is identical cooperation.When drawer unit being plugged on the drawer adapter, just can carry out various electric and mechanical performance tests to drawer unit.The drawer adapter that this drawer adapter comprises for the universal drawer adapter of the drawer unit of check 1/4 modulus and 1/2 modulus and is used for checking the drawer unit of mould preparation number.The mould of the drawer unit of this mould preparation number is high from 100mm until 700mm.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises a plurality of fixedly three-phase alternating voltage output units, is used to be verified product the three-phase alternating-current supply of preferred 380 volts is provided simultaneously.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises a plurality of adjustable three-phase alternating voltage output units, is used to be verified product arbitrary alternating voltage between preferred 0-800V is provided simultaneously.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises adjustable three-phase alternating current output unit, is used to be verified the three-phase alternating current that product provides arbitrary value between preferred 0-20A.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises the adjustable DC current output unit, is used to be verified the direct current that product provides arbitrary value between preferred 0-20mA.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises the first adjustable dc voltage output unit, is used to be verified the direct voltage that product provides arbitrary value between preferred 0-10V.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises the second adjustable dc voltage output unit, is used to be verified the direct voltage that product provides arbitrary value between preferred 0-250V.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises single-phase adjustable alternating voltage output unit, is used to be verified the single phase alternating current (A.C.) voltage that product provides arbitrary value between preferred 0-250V.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises fixedly direct voltage output unit, is used for exporting the fixedly direct voltage of preferred 24V.
Should be appreciated that above-mentioned fixedly three-phase alternating voltage output unit, adjustable three-phase alternating voltage output unit, adjustable three-phase alternating current output unit, adjustable DC current output unit, the first adjustable dc voltage output unit, the second adjustable dc voltage output unit, single-phase adjustable alternating voltage output unit, fixedly the direct voltage output unit can carry out conversion to the three-phase current electricity of 380V by transformer, AC/DC converter, AC/DC/AC converter, AC/AC converter etc. and realizes.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises the paraphase function button, switches for the phase sequence between the A phase that realizes three-phase alternating current, B phase and C phase.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises passive ammeter and voltmeter, with the button of normally-open normally-close contact and the terminal block of alternating current 220V 10A.
Whether as requested according to another embodiment of the present utility model, this low pressure test (LPT) car also has without source contact operate condition detecting unit, be used for check without source contact correct closed and disconnected.Hereinafter be described in greater detail with reference to Fig. 8.
according to an embodiment of the present utility model, this low pressure test (LPT) car also comprises the binding post matrix plate, and this binding post matrix plate is disposed in the top of this low pressure test (LPT) car.
according to an embodiment of the present utility model, the binding post matrix plate comprises a plurality of binding posts, and these a plurality of binding posts are outputs of the various functions of instruction carriage, and wherein the quantity of binding post can from dozens of to hundreds of, be preferably 112.
according to another embodiment of the present utility model, the binding post matrix plate has adopted 45 designs of spending the elevation angle, has facilitated the inspector to observe and wiring, designs humanized.Preferably, the low pressure test (LPT) car is all guided to all functions on contact pin of drawer unit and secondary contact pin and low pressure test (LPT) car on the binding post matrix plate, and being equipped with applicable flexibly short circuit plug wire, the inspector can make up the switch on test of required circuit according to different requirements.
according to an embodiment of the present utility model; the total input-wire installing earth leakage circuit-breaker of instruction carriage; and design scram button and warning lamp on instrument board is beneficial to non-reviewer around prompting and processing in emergency circumstances, thus the fail safe of raising checkout procedure.
Fig. 3 illustrates the block diagram according to the electric current phase shifting equipment 30 of an embodiment of the utility model.This electric current phase shifting equipment 30 comprises short circuit overload protection device 310, change over switch 320, voltage regulator 330 and control transformer 340.This short circuit overload protection device 310 comprises fuse and circuit breaker, is used for cutting off the input of 380V AC power when short circuit or overload, thereby realizes the protection to change over switch 320, voltage regulator 330 and control transformer 340.Change over switch 320 is configured to change the mode of connection of the primary coil of described control transformer 340.Voltage regulator 330 is configured to change size and the phase place of electric current of the primary coil of described control transformer 340, thereby the sampling current that the secondary coil that makes described control transformer 340 is exported is leading or hysteresis with respect to predetermined sampling voltage, namely changes power factor value.
Fig. 4 illustrates the circuit diagram according to the electric current phase shifting equipment of an embodiment of the utility model, and it shows respectively by the contact of controlling change over switch SA and connects the control transformer BK8 that realizes and three kinds of modes of connection of voltage regulator BK9.
Fig. 5 shows the circuit diagram according to the electric current phase shifting equipment of an embodiment of the utility model in further detail.This electric current phase shifting equipment comprises change over switch SA, control transformer BK8 and voltage regulator BK9.
The below explains the operating process of electric current phase shifting equipment in detail with reference to Fig. 4 and Fig. 5.
AC power is divided into two kinds of ac current source and alternating-current voltage sources, and conventional electric power system is all voltage source.So electric current phase shift (being lead-lag) is all take voltage as reference data.Generally electric current is ahead of voltage and is called in advance, be called hysteresis and electric current is lagged behind voltage.It is 4 grades that change over switch SA is divided into.The 1st grade is open position, namely closes, and quits work; The 2nd grade (namely upper) is also referred to as " centering " position; The 3rd grade (being meta) is also referred to as " hysteresis " position; And the 4th grade (namely the next), also referred to as " in advance " position.
Single-phase meter COS is a kind of electrodynamic type logolmeter, and its inside does not have back-moving spring, that is to say that its pointer can rest on the optional position.
For the 2nd grade, first change over switch SA is got to " centering " position, at this moment contact 5-6, the 7-8 of change over switch SA, 11-12 and 13-14 connect, the tail end 8L32 of the primary coil of control transformer BK8 passes through contact 11-12 and is connected with center line N thereby the head end 8L31 that makes the primary coil of control transformer BK8 is connected with the centre tap of voltage regulator BK9 by contact 7-8, and the tail end N1 of voltage regulator BK9 is connected with center line N and the head end 8L42 of voltage regulator BK9 is connected with A by contact 5-6.Like this, anyway adjust voltage regulator BK9, control transformer BK8 all is connected with A with voltage regulator BK9.According to the principle of transformer, the single spin-echo of the primary/secondary electric current of control transformer BK8, sampling voltage is the vector of B phase voltage and C phase voltage, and sampling current is the negative-phase sequence curent of A phase, so
Equal 1, thereby the pointer of single-phase meter is got back to the centre position, realize " centering " function.
For the 3rd grade, first change over switch SA is got to " hysteresis " position, at this moment contact 1-2, the 3-4 of change over switch SA, 9-10 and 13-14 connect, the tail end 8L32 of the primary coil of control transformer BK8 is connected with the centre tap of voltage regulator BK9 by contact 3-4 thereby the head end 8L31 that makes the primary coil of control transformer BK8 is connected with A by contact 1-2, and the tail end N1 of voltage regulator BK9 is connected with center line N and the head end 8L42 of voltage regulator BK9 is connected with B by contact 9-10.Like this, the primary current of control transformer BK8 be A phase, B mutually between the vector of electric current between electric current and A phase, center line N.Principle according to transformer, the single spin-echo of the primary/secondary electric current of control transformer BK8, along with the adjusting to voltage regulator BK9, the sampling current of single-phase meter (negative-phase sequence curent of the primary coil electric current of control transformer BK8) is in a ratio of hysteresis with sampling voltage (vector of B, C phase voltage closes).
Approximately changing between 0.8-1, thereby realizing " hysteresis " function.
For the 4th grade, first change over switch SA is got to " in advance " position, at this moment contact 1-2,3-4,13-14 and the 15-16 of change over switch SA all connect, the tail end 8L32 of the primary coil of control transformer BK8 is connected with the centre tap of voltage regulator BK9 by contact 3-4 thereby the head end 8L31 that makes the primary coil of control transformer BK8 is connected with A by contact 1-2, and the tail end N1 of voltage regulator BK9 is connected with center line N and the head end 8L42 of voltage regulator BK9 is connected with C by contact 15-16.Like this, the electric current of the primary coil of control transformer BK8 be A phase, C mutually between the vector of electric current between electric current and A phase, center line N.Principle according to transformer, the single spin-echo of the primary/secondary electric current of control transformer BK8, along with the adjusting to voltage regulator BK9, the sampling current of single-phase meter (negative-phase sequence curent of the electric current of the primary coil of control transformer BK8) is in a ratio of with sampling voltage (vector of B, C phase voltage closes) in advance
Change between 1-0.8, thereby realize " in advance " function.
As shown in Figure 5, this electric current phase shifting equipment output sampling current Im, namely leading or lagging current is to the reactive power compensation device (not shown), thus whether the automatic switching situation that detects this reactive power compensation device is normal.
Preferably; as shown in Figure 5; the electric current phase shifting equipment comprises fuse FU39, FU40 and FU41; this fuse FU39, FU40 and FU41 are used for whole electric current phase shifting equipment is carried out the short circuit overload protection; and when the low pressure test (LPT) car is carried out local overhauling; also can carry out electrical isolation by the fusible core that pulls open this fuse FU39, FU40 and FU41, this is because the port of the circuit breaker in circuit can not be regarded as secure port, only has the port of isolating switch just can be regarded as secure port.
Preferably, as shown in Figure 5, the electric current phase shifting equipment comprises circuit breaker Q F22, and this circuit breaker Q F22 is the input of electric current phase shifting equipment and the controlling electric device that withdraws from, and has simultaneously overload and short-circuit protection effect concurrently.
Preferably, as shown in Figure 5, the electric current phase shifting equipment also comprises ammeter A4, and this ammeter A4 is used to indicate the size of sampling current, observes for the inspector.
Connection circuit figure when Fig. 6 shows change over switch SA in above-described embodiment and voltage regulator BK9 and adjusts.
In this Fig. 6, for second gear, when the tap position of voltage regulator BK9 was positioned at topmost, the electric current I m of current flowing Table A 4 was maximum, and when the tap position of voltage regulator BK9 was positioned at bottom, electric current I m was minimum; For third gear, when the tap position of voltage regulator BK9 was positioned at topmost, electric current I ab was maximum, and electric current I an is minimum,
(perception), and when the tap position of voltage regulator BK9 was positioned at bottom, electric current I ab was minimum, electric current I an is maximum,
(perception); And for fourth speed, when the tap position of voltage regulator BK9 was positioned at topmost, electric current I ac was maximum, and electric current I an is minimum,
(capacitive), and when the tap position of voltage regulator BK9 was positioned at bottom, electric current I ac was minimum, electric current I an is maximum,
(capacitive).
The sampling voltage Um that when Fig. 7 shows in detail the change over switch SA of above-described embodiment and voltage regulator BK9 and adjusts, power factor meter is measured and the polar plot of sampling current Im.In Fig. 7, sampling voltage Um is the reference voltage of being scheduled to, and sampling current Im is the electric current that flows through ammeter A4 shown in Figure 6.
Although specification of the present utility model has been described the specific embodiment of electric current phase shifting equipment, those skilled in the art are to be appreciated that electric current phase shifting equipment of the present utility model is not limited only to above-mentioned specific embodiment.And those skilled in the art can expect other embodiment of electric current phase shifting equipment based on instruction of the present utility model.
Fig. 8 illustrates the circuit diagram without source contact operate condition detecting unit according to the low pressure inspection vehicle of an embodiment of the present utility model.
Shown in Figure 8 comprises fuse FU36-FU38, miniature circuit breaker QF21, power module 6SE, voltmeter V10, switch QF26, indicator light HR and 1HR-3HR and post 10L+, 10M-, 10L1+, 10M1-, 10L2+, 10M2-, 10L3+ and 10M3-without the source contact motion detection unit.
In Fig. 8, fuse FU36 is for providing short-circuit protection without the source contact motion detection unit, and when the low pressure test (LPT) car is carried out local overhauling, also can come by the fusible core that pulls open fuse FU36 the insulation blocking effect, this is because the port of the miniature circuit breaker in circuit can not be regarded as secure port, only have the port of isolating switch (that is, fuse) could be as secure port; Miniature circuit breaker QF21 is without the input of source contact motion detection unit and the controlling electric device that withdraws from, and has simultaneously overload and short-circuit protection function concurrently; Power module 6SE is the SITOP power supply of Siemens, and it is DC 24V with AC 220V power conversion that this power module 6SE is used for, to be used as the power supply without the source contact motion detection unit; Whether the output voltage that D.C. voltmeter V10 is used for observation power module 6SE is normal; Fuse FU37 and FU38 are the protective devices of voltmeter V10, play short-circuit protection function; Switch QF26 is without the input of source contact motion detection unit and the most direct controlling electric device that withdraws from, when needing frequently to cut off the electricity supply in detecting, can realize switching on and off of power supply by closed, cut-off switch QF26, make the power module frequent starting to avoid because of operation miniature circuit breaker QF21; Indicator light HR is the monitoring electrical equipment without the DC 24V power supply of source contact motion detection unit, and what above-mentioned D.C. voltmeter V10 showed is the output voltage values of power module 6SE, and indicator light HR passes through the light operating state of display power supply module 6SE intuitively; Indicator light 1HR, 2HR and 3HR show respectively the state of 3 pairs of passive contacts to be measured; 10L1+, 10M1-, 10L2+, 10M2-, 10L3+ and 10M3-are 6 posts, are used for the access without source contact to be measured; And post 10L+, 10M-are used for the fixing 24V direct current output of output.
This is described below without the testing process of source contact motion detection unit.At first, to be detected is connected to post 10L1+, 10M1-, 10L2+, 10M2-, 10L3+ and 10M3-without source contact; Then Closing Switch QF21, and whether observe D.C. voltmeter V10 normal, if D.C. voltmeter V10 is normal, Closing Switch QF26.Like this, can show three pairs without the state of source contact.If passive junction closure, corresponding indicator light is bright; And if without the source contact disconnection, corresponding indicator light extinguishes.Along with the state variation without the main body (as contactor adhesive/release) of source contact, switch without the state of source contact, its corresponding indicator light is bright/the also respective change of going out.This detection scheme simple, intuitive, and need not to use universal instrument/break-make device to detect, thus improved operating efficiency.
Above by drawings and Examples, the utility model detail display and explanation have been carried out; yet the utility model is not limited to these embodiment that has disclosed, and other scheme that those skilled in the art therefrom derive out is also within protection range of the present utility model.Therefore, protection range of the present utility model should be limited by appending claims.
Should be noted that in claims, any Reference numeral in bracket should be understood as is limitations on claims.Word " comprises " not getting rid of and has the element of not enumerating in claim or specification, unit or device.Element, word " " or " one " before unit or device do not get rid of and have a plurality of this element, unit or devices.In having enumerated the equipment claim of several unit, several can the enforcement by same class software and/or hardware in these elements.Use word " first ", " second " and " the 3rd " etc. not to represent any ordinal relation.These Word Understandings should be become title.
Claims (15)
1. low pressure test (LPT) car comprises:
The instruction carriage main body;
Whether electric current phase shifting equipment (220) is normal thereby the on-the-spot load condition when being used for the adjustable perception of output power factor or capacitive reactive power sampling current and simulating the power distribution cabinet operation detects the automatic switching situation of reactive power compensation device;
Drawer unit verifying attachment (230) is used for the electric and mechanical performance of drawer unit is tested; And
Power supply (210) is used for providing working power to described electric current phase shifting equipment and described drawer unit verifying attachment.
2. low pressure test (LPT) car according to claim 1, wherein said instruction carriage main body is made by steel plate, and the supporting point of described low pressure test (LPT) car is six universal wheels.
3. low pressure test (LPT) car according to claim 1, wherein said drawer unit verifying attachment and described electric current phase shifting equipment are removably mounted on described instruction carriage main body.
4. low pressure test (LPT) car according to claim 1, wherein said electric current phase shifting equipment comprises short circuit overload protection device (310), change over switch (320), voltage regulator (330) and control transformer (340), and wherein said short circuit overload protection device is used for described change over switch, described voltage regulator and described control transformer are carried out the short circuit overload protection; Described change over switch is configured to change the mode of connection of the primary coil of described control transformer, described voltage regulator is configured to change size and the phase place of electric current of the described primary coil of described control transformer, thereby makes sampling current that the secondary coil of described control transformer exports leading or lag behind with respect to predetermined sampling voltage.
5. low pressure test (LPT) car according to claim 1, wherein said drawer unit verifying attachment comprises the drawer adapter, described drawer adapter is that the real work in switchgear assembly designs according to described drawer unit, and described drawer unit is inserted in described drawer adapter and inserts in described switchgear assembly is identical cooperation.
6. low pressure test (LPT) car according to claim 4, wherein said drawer adapter comprise for the universal drawer adapter of the drawer unit of check 1/4 modulus and 1/2 modulus and the drawer adapter that is used for the drawer unit of check mould preparation number.
7. low pressure test (LPT) car according to claim 6, the mould of the drawer unit of wherein said mould preparation number is high from 100mm until 700mm.
8. low pressure test (LPT) car according to claim 1; the total input-wire installing earth leakage circuit-breaker of wherein said low pressure test (LPT) car; and be furnished with scram button and warning lamp on the instrument board of described low pressure test (LPT) car, in order to point out non-reviewer on every side and in case of emergency process.
9. low pressure test (LPT) car according to claim 1, wherein said low pressure test (LPT) car also comprises be used to being used to and is verified a plurality of fixedly three-phase alternating voltage output units that product provides the three-phase alternating-current supply of 380 volts simultaneously, be used to and be verified a plurality of adjustable three-phase alternating voltage output unit that product provides the arbitrary alternating voltage between 0-800V simultaneously, be used to and be verified the adjustable three-phase alternating current output unit that product provides the three-phase alternating current of arbitrary value between 0-20A, be used to and be verified the adjustable DC current output unit that product provides the direct current of arbitrary value between 0-20mA, be used to and be verified the first adjustable dc voltage output unit that product provides the direct voltage of arbitrary value between 0-10V, be used to and be verified the second adjustable dc voltage output unit that product provides the direct voltage of arbitrary value between 0-250V, be used to and be verified the single-phase adjustable alternating voltage output unit that product provides the single phase alternating current (A.C.) voltage of arbitrary value between 0-250V, at least one of fixedly direct voltage output unit that is used for the fixedly direct voltage of output 24V.
10. low pressure test (LPT) car according to claim 1, wherein said low pressure test (LPT) car also comprises the paraphase function button, the phase sequence of A phase, B phase and the C that is used for realizing three-phase alternating current between mutually switched.
11. low pressure test (LPT) car according to claim 1, wherein said low pressure test (LPT) car also comprise passive ammeter and voltmeter, with the button of normally-open normally-close contact and the terminal block of alternating current 220V 10A.
12. whether as requested low pressure test (LPT) car according to claim 1, wherein said low pressure test (LPT) car also have without source contact operate condition detecting unit, be used for check without source contact correct closed and disconnected.
13. the described low pressure test (LPT) car of any one according to claim 1-12, wherein said low pressure test (LPT) car also comprises the binding post matrix plate, and this binding post matrix plate is disposed in the top of described low pressure test (LPT) car.
14. low pressure test (LPT) car according to claim 13, wherein said binding post matrix plate comprises a plurality of binding posts, and these a plurality of binding posts are outputs of the various functions of described low pressure test (LPT) car, and the quantity of wherein said binding post can be from dozens of to hundreds of.
15. low pressure test (LPT) car according to claim 13, wherein said binding post matrix plate have adopted 45 designs of spending the elevation angle, so that the inspector observes and wiring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220548871 CN202949157U (en) | 2012-10-24 | 2012-10-24 | Low-voltage test car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220548871 CN202949157U (en) | 2012-10-24 | 2012-10-24 | Low-voltage test car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202949157U true CN202949157U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220548871 Expired - Fee Related CN202949157U (en) | 2012-10-24 | 2012-10-24 | Low-voltage test car |
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| Country | Link |
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| CN (1) | CN202949157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485577A (en) * | 2020-12-08 | 2021-03-12 | 南京智睿能源互联网研究院有限公司 | Low-voltage testing device for power electronic equipment |
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2012
- 2012-10-24 CN CN 201220548871 patent/CN202949157U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485577A (en) * | 2020-12-08 | 2021-03-12 | 南京智睿能源互联网研究院有限公司 | Low-voltage testing device for power electronic equipment |
| CN112485577B (en) * | 2020-12-08 | 2023-08-04 | 南京智睿能源互联网研究院有限公司 | Low-voltage testing device for power electronic equipment |
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