Intelligent distribution box test circuit and test vehicle

Abstract

The utility model relates to an intelligent distribution box test circuit and a test vehicle, and the circuit comprises an AC adjustable voltage output part which is used for outputting an AC three-phase voltage with an adjustable voltage amplitude of 0-380V; the alternating-current direct-through voltage output part is used for outputting alternating-current 380V direct-through voltage; the three-phase adjustable current output part is used for outputting adjustable current; the adjustable direct-current voltage output part is used for outputting adjustable direct-current voltage; and a DC voltage output unit for outputting a plurality of DC voltages. And a set of complete testing equipment is provided for testing the manufactured distribution box in a centralized manner, so that the testing efficiency can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of practical distribution box testing, and in particular to an intelligent distribution box testing circuit and a test vehicle. Background Art

[0002] After the distribution box is manufactured, its input and output functions and performance need to be comprehensively tested. The test steps are relatively numerous, and completing the test task requires preparing test hardware for each test step. At present, there is no complete set of test equipment to test it. Utility Model Content

[0003] The utility model provides an intelligent distribution box test circuit and a test vehicle, aiming to solve at least one of the technical problems existing in the prior art.

[0004] The technical solution of the utility model is an intelligent distribution box test circuit, which is used to convert the three-phase four-wire in the power equipment into a variety of current and voltage outputs, and is applied to the power distribution box test operation. The three-phase four-wire includes phase line A, phase line B, phase line C and neutral line N, and also includes:

[0005] AC adjustable voltage output unit, used for outputting AC three-phase voltage with adjustable voltage amplitude from 0 to 380V;

[0006] AC direct voltage output part, used to output AC 380V direct voltage;

[0007] A three-phase adjustable current output part, used for outputting adjustable current;

[0008] An adjustable DC voltage output unit, used for outputting an adjustable DC voltage;

[0009] The DC voltage output unit is used to output a variety of DC voltages.

[0010] Furthermore, the AC adjustable voltage output unit includes a second leakage circuit breaker QF2, a miniature circuit breaker QF, a first miniature circuit breaker QF1, a first contactor KM1, a second contactor KM2, and a first three-phase contactor voltage regulator TB1, which are connected in sequence.

[0011] The input end of the second leakage circuit breaker QF2 is connected to the phase line A, the phase line B, the phase line C and the neutral line N respectively, and the output end of the second leakage circuit breaker QF2 is connected to the input end of the miniature circuit breaker QF respectively.

[0012] The output terminals of the miniature circuit breaker QF include a phase line A output terminal L1, a phase line B output terminal L2, a phase line C output terminal L3 and a neutral line N output terminal 1N.

[0013] The phase A output terminal L1, the phase B output terminal L2, and the phase C output terminal L3 are respectively connected to the input terminal of the first miniature circuit breaker QF1, and the output terminal of the first miniature circuit breaker is respectively connected to the input terminal of the first contactor KM1 and the input terminal of the second contactor KM2.

[0014] The output end of the first contactor KM1 is connected to the input end of the first three-phase contact voltage regulator TB1, and the output end of the first three-phase contact voltage regulator TB1 is respectively connected to the neutral line N output terminal 1N, the phase line A adjustable output terminal 1A, the phase line B adjustable output terminal 1B and the phase line C adjustable output terminal 1C. The phase line A adjustable output terminal 1A is used to output the A phase adjustable voltage, the phase line B adjustable output terminal 1B is used to output the B phase adjustable voltage, and the phase line C adjustable output terminal 1C is used to output the C phase adjustable voltage.

[0015] Furthermore, the AC direct voltage output portion includes a phase line A direct voltage output terminal 2A, a phase line B direct voltage output terminal 2B, and a phase line C direct voltage output terminal 2C.

[0016] The output end of the second contactor KM2 is connected to the phase line A direct voltage output end 2A, the phase line B direct voltage output end 2B and the phase line C direct voltage output end 2C respectively.

[0017] It also includes a neutral line N output terminal 1N, which is connected to the neutral line N output terminal 1N of the miniature circuit breaker QF.

[0018] Furthermore, the three-phase adjustable current output unit includes a third miniature circuit breaker QF3, a third contactor KM3, a first single-phase contact voltage regulator TB31, a second single-phase contact voltage regulator TB32, a third single-phase contact voltage regulator TB33, an A-phase current transformer TAa, a B-phase current transformer TAb, a C-phase current transformer TAc, an A-phase ammeter A31, a B-phase ammeter A32, a C-phase ammeter A33, a first power factor meter COS1, a second power factor meter COS2, a third power factor meter COS3, a first connecting terminal 1XB, a second connecting terminal 2XB, a third connecting terminal 3XB, a first current relay KA1, a second current relay KA2, a third current relay KA3, an A-phase current stabilization device, a B-phase current stabilization device, and a C-phase current stabilization device;

[0019] The three-phase input terminals of the third miniature circuit breaker QF3 are respectively connected to the three-phase output terminals of the miniature circuit breaker QF, and the three-phase output terminals of the third miniature circuit breaker QF3 are respectively connected to the input terminals of the first single-phase contact voltage regulator TB31, the second single-phase contact voltage regulator TB32, and the third single-phase contact voltage regulator TB33. The first single-phase contact voltage regulator TB31 is used to adjust the current output size of phase A, the second single-phase contact voltage regulator TB32 is used to adjust the current output size of phase B, and the third single-phase contact voltage regulator TB33 is used to adjust the current output size of phase C.

[0020] The first single-phase contact voltage regulator TB31 is connected to the input end of the A-phase current stabilization device, the second single-phase contact voltage regulator TB32 is connected to the input end of the B-phase current stabilization device, and the third single-phase contact voltage regulator TB33 is connected to the input end of the C-phase current stabilization device.

[0021] The common output terminal of the first single-phase contact voltage regulator TB31, the second single-phase contact voltage regulator TB32 and the third single-phase contact voltage regulator TB33 is connected to the neutral line N output terminal 1N.

[0022] The A-phase current transformer TAa, the B-phase current transformer Tab and the C-phase current transformer Tac are respectively arranged on the output end of the first single-phase contact voltage regulator TB31, the output end of the second single-phase contact voltage regulator TB32 and the output end of the third single-phase contact voltage regulator TB33.

[0023] Furthermore, the first end of the A-phase current transformer TAa is connected to the A-phase ammeter A31 and the first power factor meter COS1 in sequence, the output end of the first power factor meter COS1 is connected to the input end of the first connection terminal 1XB and the input end of the first current relay KA1 respectively, and the output end of the first connection terminal 1XB and the output end of the first current relay KA1 are both connected to the A-phase adjustable current output end;

[0024] The first end of the B-phase current transformer TAb is connected to the B-phase ammeter A32 and the second power factor meter COS2 in sequence. The output end of the second power factor meter COS2 is connected to the input end of the second connection terminal 2XB and the input end of the second current relay KA2 respectively. The output end of the second connection terminal 2XB and the output end of the second current relay KA2 are both connected to the B-phase adjustable current output end.

[0025] The first end of the C-phase current transformer TAc is connected to the C-phase ammeter A33 and the third power factor meter COS3 in sequence, the output end of the third power factor meter COS3 is respectively connected to the input end of the third connecting terminal 3XB and the input end of the third current relay KA3, and the output end of the third connecting terminal 3XB and the output end of the third current relay KA3 are both connected to the C-phase adjustable current output end.

[0026] Furthermore, the A-phase current stabilizing device includes a third adjustable resistor R31, a first reactor DKQ1, a first capacitor C1-1, a first second capacitor C1-2, a first third capacitor C1-3, a first fourth capacitor C1-4, a first fifth capacitor C1-5 and a first conversion switch KK1.

[0027] The output end of the first single-phase contact voltage regulator TB31, the third adjustable resistor R31, the first inductor DKQ1 and the first input end of the first conversion switch KK1 are connected in sequence, the output end of the first single-phase contact voltage regulator TB31, the first capacitor C1-1 and the third input end of the first conversion switch KK1 are connected in sequence, the output end of the first single-phase contact voltage regulator TB31, the first second capacitor C1-2 and the fifth input end of the first conversion switch KK1 are connected in sequence, the output end of the first single-phase contact voltage regulator TB31, the first third capacitor C1-3 and the seventh input terminal of the first transfer switch KK1 are connected in sequence, the output terminal of the first single-phase contact voltage regulator TB31, the first four capacitors C1-4 and the ninth input terminal of the first transfer switch KK1 are connected in sequence, the output terminal of the first single-phase contact voltage regulator TB31, the first five capacitors C1-5 and the first one input terminal of the first transfer switch KK1 are connected in sequence, and the second output terminal, the fourth output terminal, the sixth output terminal, the eighth output terminal, the first zero output terminal and the first two output terminals of the first transfer switch KK1 are respectively connected to the neutral line N output terminal 1N;

[0028] The B-phase current stabilizing device includes a third-second adjustable resistor R32, a second inductor DKQ2, a second-first capacitor C2-1, a second-second capacitor C2-2, a second-third capacitor C2-3, a second-fourth capacitor C2-4, a second-fifth capacitor C2-5, and a second transfer switch KK2.

[0029] The output end of the second single-phase contact voltage regulator TB32, the third-second adjustable resistor R32, the second inductor DKQ2 and the first input end of the second conversion switch KK2 are connected in sequence, the output end of the second single-phase contact voltage regulator TB32, the second-first capacitor C2-1 and the third input end of the second conversion switch KK2 are connected in sequence, the output end of the second single-phase contact voltage regulator TB32, the second-second capacitor C2-2 and the fifth input end of the second conversion switch KK2 are connected in sequence, the output end of the second single-phase contact voltage regulator TB32, the second-third capacitor C2-3 and the seventh input terminal of the second transfer switch KK2 are connected in sequence, the output terminal of the second single-phase contact voltage regulator TB32, the second fourth capacitor C2-4 and the ninth input terminal of the second transfer switch KK2 are connected in sequence, the output terminal of the second single-phase contact voltage regulator TB32, the second fifth capacitor C2-5 and the first first input terminal of the second transfer switch KK2 are connected in sequence, and the second output terminal, the fourth output terminal, the sixth output terminal, the eighth output terminal, the first zero output terminal and the first second output terminal of the second transfer switch KK2 are respectively connected to the neutral line N output terminal 1N;

[0030] The C-phase current stabilization device includes a third adjustable resistor R33, a third reactor DKQ3, a third first capacitor C3-1, a third second capacitor C3-2, a third third capacitor C3-3, a third fourth capacitor C3-4, a third fifth capacitor C3-5, and a third transfer switch KK3.

[0031] The output end of the third single-phase contact voltage regulator TB33, the third adjustable resistor R33, the third inductor DKQ3 and the first input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third first capacitor C3-1 and the third input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third second capacitor C3-2 and the fifth input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third third capacitor C3-1 and the third input end of the third conversion switch KK3 are connected in sequence, C3-3 and the seventh input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third fourth capacitor C3-4 and the ninth input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third fifth capacitor C3-5 and the first first input end of the third conversion switch KK3 are connected in sequence, and the second output end, fourth output end, sixth output end, eighth output end, first zero output end and first second output end of the third conversion switch KK3 are respectively connected to the neutral line N output end 1N.

[0032] Furthermore, the adjustable DC voltage output unit includes a fourth miniature circuit breaker QF4, a fourth contactor KM4, a fourth three-phase contactor voltage regulator TB4, a fourth-first diode D41, a fourth-second diode D42, a fourth-third diode D43, a fourth-fourth diode D44, a fourth-fifth diode D45, a fourth-sixth diode D46, a fourth capacitor C4, a fourth voltmeter V4, a fourth resistor R4, a fourth fuse FU4, a first knife switch QS1 and a fifth leakage circuit breaker QF5.

[0033] The three-phase input terminals of the fourth miniature circuit breaker QF4 are respectively connected to the three-phase output terminals of the miniature circuit breaker QF, the three-phase output terminals of the fourth miniature circuit breaker QF4 are respectively connected to the three-phase input terminals of the fourth contactor KM4, and the three-phase output terminals of the fourth contactor KM4 are respectively connected to the three-phase input terminals of the fourth three-phase contactor voltage regulator TB4.

[0034] The A-phase output terminal of the fourth three-phase contact voltage regulator TB4 is connected to the cathode terminal of the fourth-fifth diode D45 and the positive terminal of the fourth-sixth diode D46, respectively. The B-phase output terminal of the fourth three-phase contact voltage regulator TB4 is connected to the cathode terminal of the fourth-third diode D43 and the positive terminal of the fourth-fourth diode D44, respectively. The C-phase output terminal of the fourth three-phase contact voltage regulator TB4 is connected to the cathode terminal of the fourth-first diode D41 and the positive terminal of the fourth-second diode D42, respectively.

[0035] The positive terminal of the fourth-first diode D41, the positive terminal of the fourth-third diode, and the positive terminal of the fourth-fifth diode D45 are connected to the first end of the fourth capacitor C4 and the first end of the fourth voltmeter V4, respectively. The negative terminal of the fourth-second diode D42, the negative terminal of the fourth-fourth diode D44, and the negative terminal of the fourth-sixth diode D46 are connected to the second end of the fourth capacitor C4 and the second end of the fourth voltmeter V4, respectively. The first end of the fourth resistor R4 is connected to the first end of the fourth capacitor C4 via a path of the fourth contactor KM4. The second end of the fourth resistor R4 is connected to the second end of the fourth capacitor C4. The first end of the fourth capacitor C4 is connected to the DV- terminal, and the second end of the fourth capacitor C4 is connected to the DV+ terminal. The DV- terminal is connected to the -DC terminal, and the DV+ terminal is connected to the +DC terminal. The +DC terminal is connected to the first input terminal of the first knife switch QS1, and the -DC terminal is connected to the second input terminal of the first knife switch QS1.

[0036] The first input terminal of the fifth leakage circuit breaker QF5 is connected to the neutral line N output terminal 1N, and the second input terminal of the fifth leakage circuit breaker QF5 is connected to any one of the phase line A output terminal L1, the phase line B output terminal L2 and the phase line C output terminal L3.

[0037] Furthermore, the DC voltage output unit includes a second switching power supply LH2, a third switching power supply LH3, a fourth switching power supply LH4, a sixth knob SA6, a seventh knob SA7, an eighth knob SA8, a ninth knob SA9, a first bell HA1, a second bell HA2, a third bell HA3, a fourth bell HA4, a second and third level socket R5, a fluorescent lamp HL, and a fifth knob SA5.

[0038] The input end of the second switching power supply LH2, the input end of the third switching power supply LH3, the input end of the fourth switching power supply LH4 and the live and neutral wire input ends of the second and third level sockets R5 are all connected to the output end of the fifth leakage circuit breaker QF5.

[0039] A first terminal of a first output end of the second switching power supply LH2 is connected to a -12V DC voltage output terminal. A second terminal of the first output end of the second switching power supply LH2 is connected to a first path of the sixth knob SA6, the first bell HA1, and a +12V DC voltage output terminal in sequence. A second terminal of the first output end of the second switching power supply LH2 is connected to a second path of the sixth knob SA6 and a +12V DC voltage output terminal.

[0040] A first terminal of a second output end of the second switching power supply LH2 is connected to a -24V DC voltage output terminal. A second terminal of the second output end of the second switching power supply LH2 is connected in sequence to a first path of the seventh knob SA7, the second bell HA2, and a +24V DC voltage output terminal. A second terminal of the second output end of the second switching power supply LH2 is connected to a second path of the seventh knob SA7 and a +24V DC voltage output terminal.

[0041] The first terminal of the output end of the third switching power supply LH3 is connected to the -36V DC voltage output terminal. The second terminal of the output end of the third switching power supply LH3 is connected to the first path of the eighth knob SA8, the third bell HA3, and the +36V DC voltage output terminal in sequence. The second terminal of the output end of the third switching power supply LH3 is connected to the second path of the eighth knob SA8 and the +36V DC voltage output terminal.

[0042] The first terminal of the output end of the fourth switching power supply LH4 is connected to the -48V DC voltage output terminal. The second terminal of the output end of the fourth switching power supply LH4 is connected to the first path of the ninth knob SA9, the fourth bell HA4, and the +48V DC voltage output terminal in sequence. The second terminal of the output end of the fourth switching power supply LH4 is connected to the second path of the ninth knob SA9 and the +48V DC voltage output terminal.

[0043] The first terminal of the output end of the fifth leakage circuit breaker QF5, the fluorescent lamp HL, the fifth knob SA5 and the second terminal of the output end of the fifth leakage circuit breaker QF5 are connected in sequence.

[0044] Furthermore, it also includes an alarm unit, which includes an alarm light HR5, the first end of the alarm light HR5 is connected to the -12V DC voltage output terminal, the second end of the alarm light HR5 is connected to the first end of the first contactor KM1, the first end of the second contactor KM2, the first end of the third contactor KM3 and the first end of the fourth contactor KM4, the second end of the first contactor KM1, the second end of the second contactor KM2, the second end of the third contactor KM3 and the second end of the fourth contactor KM4 are all connected to the +12V DC voltage output terminal.

[0045] Furthermore, it also includes a temperature control unit, which includes a temperature sensor, a temperature controller WSK, a first exhaust fan M1, a second exhaust fan M2 and a third fuse FU3.

[0046] The first zero input terminal of the temperature controller WSK is connected to the phase line A output terminal L1 through the third fuse FU3, the ninth input terminal of the temperature controller WSK is connected to the neutral line N output terminal 1N, the first end of the first exhaust fan M1 and the first end of the second exhaust fan M2 are respectively connected to the sixth output terminal of the temperature controller, the second end of the first exhaust fan M1 and the second end of the second exhaust fan M2 are respectively connected to the eighth output terminal of the temperature controller, and the first end, fourth end and fifth end of the temperature controller are all connected to the temperature sensor.

[0047] The present invention further provides an intelligent distribution box test vehicle, which includes the intelligent distribution box test circuit and further includes:

[0048] A box body, wherein the intelligent distribution box test circuit is installed in the box body;

[0049] A test console is arranged on the box.

[0050] The beneficial effects of the present utility model are as follows:

[0051] In this application, a complete set of testing equipment is provided to centrally test the distribution boxes after manufacture, which can greatly improve the efficiency of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a circuit diagram of the AC adjustable voltage output part and the AC direct voltage output part of the intelligent distribution box test circuit of the embodiment of the utility model.

[0053] Figure 2 This is a circuit diagram of a three-phase adjustable current output portion in a test circuit of an intelligent distribution box according to an embodiment of the present invention.

[0054] Figure 3 This is a circuit diagram of an adjustable DC voltage output portion in a test circuit of an intelligent distribution box according to an embodiment of the present utility model.

[0055] Figure 4 This is a circuit diagram of the DC voltage output part in the intelligent distribution box test circuit of an embodiment of the present utility model.

[0056] Figure 5 It is a circuit diagram of the alarm unit in the test circuit of the intelligent distribution box according to the embodiment of the present utility model.

[0057] Figure 6 This is a circuit diagram of the temperature control unit in the intelligent distribution box test circuit of an embodiment of the present utility model.

[0058] Figure 7 It is a front view of a test vehicle according to an embodiment of the present utility model.

[0059] Figure 8 It is a side view of a test vehicle according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0060] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict.

[0061] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. In addition, the terms "upper," "lower," "left," "right," "top," and "bottom" used in this utility model are merely relative to the relative positions of the components of the utility model in the accompanying drawings.

[0062] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments and are not intended to limit the present invention. The term "and / or" as used herein includes any combination of one or more of the related listed items.

[0063] It should be understood that although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element without departing from the scope of the present disclosure.

[0064] Reference Figures 1 to 8 In some embodiments, an intelligent distribution box test circuit according to the present invention is used to convert and output three-phase four-wire in power equipment into multiple currents and voltages for use in power distribution box testing operations. The three-phase four-wire includes phase line A, phase line B, phase line C, and neutral line N, and further includes:

[0065] AC adjustable voltage output unit, used for outputting AC three-phase voltage with adjustable voltage amplitude from 0 to 380V;

[0066] AC direct voltage output part, used to output AC 380V direct voltage;

[0067] A three-phase adjustable current output part, used for outputting adjustable current;

[0068] An adjustable DC voltage output unit, used for outputting an adjustable DC voltage;

[0069] The DC voltage output unit is used to output a variety of DC voltages.

[0070] The beneficial effects of the present utility model are as follows:

[0071] In this application, a complete set of testing equipment is provided to centrally test the distribution boxes after manufacture, which can greatly improve the efficiency of the test.

[0072] Reference Figures 1 to 6 , the name specifications of some symbols are as follows:

[0073]

[0074]

[0075]

[0076]

[0077] Further, refer to Figure 1 The AC adjustable voltage output unit includes a second leakage circuit breaker QF2, a miniature circuit breaker QF, a first miniature circuit breaker QF1, a first contactor KM1, a second contactor KM2, and a first three-phase contactor voltage regulator TB1, which are connected in sequence.

[0078] The input end of the second leakage circuit breaker QF2 is connected to the phase line A, the phase line B, the phase line C and the neutral line N respectively, and the output end of the second leakage circuit breaker QF2 is connected to the input end of the miniature circuit breaker QF respectively.

[0079] The output terminals of the miniature circuit breaker QF include a phase line A output terminal L1, a phase line B output terminal L2, a phase line C output terminal L3 and a neutral line N output terminal 1N.

[0080] The phase A output terminal L1, the phase B output terminal L2, and the phase C output terminal L3 are respectively connected to the input terminal of the first miniature circuit breaker QF1, and the output terminal of the first miniature circuit breaker is respectively connected to the input terminal of the first contactor KM1 and the input terminal of the second contactor KM2.

[0081] The output end of the first contactor KM1 is connected to the input end of the first three-phase contact voltage regulator TB1, and the output end of the first three-phase contact voltage regulator TB1 is respectively connected to the neutral line N output terminal 1N, the phase line A adjustable output terminal 1A, the phase line B adjustable output terminal 1B and the phase line C adjustable output terminal 1C. The phase line A adjustable output terminal 1A is used to output the A phase adjustable voltage, the phase line B adjustable output terminal 1B is used to output the B phase adjustable voltage, and the phase line C adjustable output terminal 1C is used to output the C phase adjustable voltage.

[0082] Further, refer to Figure 1 The AC direct voltage output portion includes a phase line A direct voltage output terminal 2A, a phase line B direct voltage output terminal 2B, and a phase line C direct voltage output terminal 2C.

[0083] The output end of the second contactor KM2 is connected to the phase line A direct voltage output end 2A, the phase line B direct voltage output end 2B and the phase line C direct voltage output end 2C respectively.

[0084] It also includes a neutral line N output terminal 1N, which is connected to the neutral line N output terminal 1N of the miniature circuit breaker QF.

[0085] In some specific embodiments, the AC adjustable voltage output unit and the AC direct voltage output unit are connected using 6mm wires.

[0086] Further, refer to Figure 2The three-phase adjustable current output unit includes a third miniature circuit breaker QF3, a third contactor KM3, a first single-phase contact voltage regulator TB31, a second single-phase contact voltage regulator TB32, a third single-phase contact voltage regulator TB33, an A-phase current transformer TAa, a B-phase current transformer TAb, a C-phase current transformer TAc, an A-phase ammeter A31, a B-phase ammeter A32, a C-phase ammeter A33, a first power factor meter COS1, a second power factor meter COS2, a third power factor meter COS3, a first connecting terminal 1XB, a second connecting terminal 2XB, a third connecting terminal 3XB, a first current relay KA1, a second current relay KA2, a third current relay KA3, an A-phase current stabilization device, a B-phase current stabilization device, and a C-phase current stabilization device;

[0087] The three-phase input terminals of the third miniature circuit breaker QF3 are respectively connected to the three-phase output terminals of the miniature circuit breaker QF, and the three-phase output terminals of the third miniature circuit breaker QF3 are respectively connected to the input terminals of the first single-phase contact voltage regulator TB31, the second single-phase contact voltage regulator TB32, and the third single-phase contact voltage regulator TB33. The first single-phase contact voltage regulator TB31 is used to adjust the current output size of phase A, the second single-phase contact voltage regulator TB32 is used to adjust the current output size of phase B, and the third single-phase contact voltage regulator TB33 is used to adjust the current output size of phase C.

[0088] The first single-phase contact voltage regulator TB31 is connected to the input end of the A-phase current stabilization device, the second single-phase contact voltage regulator TB32 is connected to the input end of the B-phase current stabilization device, and the third single-phase contact voltage regulator TB33 is connected to the input end of the C-phase current stabilization device.

[0089] The common output terminal of the first single-phase contact voltage regulator TB31, the second single-phase contact voltage regulator TB32 and the third single-phase contact voltage regulator TB33 is connected to the neutral line N output terminal 1N.

[0090] The A-phase current transformer TAa, the B-phase current transformer Tab and the C-phase current transformer Tac are respectively arranged on the output end of the first single-phase contact voltage regulator TB31, the output end of the second single-phase contact voltage regulator TB32 and the output end of the third single-phase contact voltage regulator TB33.

[0091] In some specific embodiments, the three-phase adjustable current output unit is connected using 2.5mm wires.

[0092] Further, refer to Figure 2The first end of the A-phase current transformer TAa is connected to the A-phase ammeter A31 and the first power factor meter COS1 in sequence. The output end of the first power factor meter COS1 is connected to the input end of the first connection terminal 1XB and the input end of the first current relay KA1 respectively. The output end of the first connection terminal 1XB and the output end of the first current relay KA1 are both connected to the A-phase adjustable current output end.

[0093] The first end of the B-phase current transformer TAb is connected to the B-phase ammeter A32 and the second power factor meter COS2 in sequence. The output end of the second power factor meter COS2 is connected to the input end of the second connection terminal 2XB and the input end of the second current relay KA2 respectively. The output end of the second connection terminal 2XB and the output end of the second current relay KA2 are both connected to the B-phase adjustable current output end.

[0094] The first end of the C-phase current transformer TAc is connected to the C-phase ammeter A33 and the third power factor meter COS3 in sequence, the output end of the third power factor meter COS3 is respectively connected to the input end of the third connecting terminal 3XB and the input end of the third current relay KA3, and the output end of the third connecting terminal 3XB and the output end of the third current relay KA3 are both connected to the C-phase adjustable current output end.

[0095] Further, refer to Figure 2 The A-phase current stabilization device includes a third adjustable resistor R31, a first reactor DKQ1, a first capacitor C1-1, a first second capacitor C1-2, a first third capacitor C1-3, a first fourth capacitor C1-4, a first fifth capacitor C1-5 and a first transfer switch KK1.

[0096] The output end of the first single-phase contact voltage regulator TB31, the third adjustable resistor R31, the first inductor DKQ1 and the first input end of the first conversion switch KK1 are connected in sequence, the output end of the first single-phase contact voltage regulator TB31, the first capacitor C1-1 and the third input end of the first conversion switch KK1 are connected in sequence, the output end of the first single-phase contact voltage regulator TB31, the first second capacitor C1-2 and the fifth input end of the first conversion switch KK1 are connected in sequence, the output end of the first single-phase contact voltage regulator TB31, the first third capacitor C1-3 and the seventh input terminal of the first transfer switch KK1 are connected in sequence, the output terminal of the first single-phase contact voltage regulator TB31, the first four capacitors C1-4 and the ninth input terminal of the first transfer switch KK1 are connected in sequence, the output terminal of the first single-phase contact voltage regulator TB31, the first five capacitors C1-5 and the first one input terminal of the first transfer switch KK1 are connected in sequence, and the second output terminal, the fourth output terminal, the sixth output terminal, the eighth output terminal, the first zero output terminal and the first two output terminals of the first transfer switch KK1 are respectively connected to the neutral line N output terminal 1N;

[0097] The B-phase current stabilizing device includes a third-second adjustable resistor R32, a second inductor DKQ2, a second-first capacitor C2-1, a second-second capacitor C2-2, a second-third capacitor C2-3, a second-fourth capacitor C2-4, a second-fifth capacitor C2-5, and a second transfer switch KK2.

[0098] The output end of the second single-phase contact voltage regulator TB32, the third-second adjustable resistor R32, the second inductor DKQ2 and the first input end of the second conversion switch KK2 are connected in sequence, the output end of the second single-phase contact voltage regulator TB32, the second-first capacitor C2-1 and the third input end of the second conversion switch KK2 are connected in sequence, the output end of the second single-phase contact voltage regulator TB32, the second-second capacitor C2-2 and the fifth input end of the second conversion switch KK2 are connected in sequence, the output end of the second single-phase contact voltage regulator TB32, the second-third capacitor C2-3 and the seventh input terminal of the second transfer switch KK2 are connected in sequence, the output terminal of the second single-phase contact voltage regulator TB32, the second fourth capacitor C2-4 and the ninth input terminal of the second transfer switch KK2 are connected in sequence, the output terminal of the second single-phase contact voltage regulator TB32, the second fifth capacitor C2-5 and the first first input terminal of the second transfer switch KK2 are connected in sequence, and the second output terminal, the fourth output terminal, the sixth output terminal, the eighth output terminal, the first zero output terminal and the first second output terminal of the second transfer switch KK2 are respectively connected to the neutral line N output terminal 1N;

[0099] The C-phase current stabilization device includes a third adjustable resistor R33, a third reactor DKQ3, a third first capacitor C3-1, a third second capacitor C3-2, a third third capacitor C3-3, a third fourth capacitor C3-4, a third fifth capacitor C3-5, and a third transfer switch KK3.

[0100] The output end of the third single-phase contact voltage regulator TB33, the third adjustable resistor R33, the third inductor DKQ3 and the first input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third first capacitor C3-1 and the third input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third second capacitor C3-2 and the fifth input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third third capacitor C3-1 and the third input end of the third conversion switch KK3 are connected in sequence, C3-3 and the seventh input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third fourth capacitor C3-4 and the ninth input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third fifth capacitor C3-5 and the first first input end of the third conversion switch KK3 are connected in sequence, and the second output end, fourth output end, sixth output end, eighth output end, first zero output end and first second output end of the third conversion switch KK3 are respectively connected to the neutral line N output end 1N.

[0101] Further, refer to Figure 3 The adjustable DC voltage output unit includes a fourth miniature circuit breaker QF4, a fourth contactor KM4, a fourth three-phase contactor voltage regulator TB4, a fourth-first diode D41, a fourth-second diode D42, a fourth-third diode D43, a fourth-fourth diode D44, a fourth-fifth diode D45, a fourth-sixth diode D46, a fourth capacitor C4, a fourth voltmeter V4, a fourth resistor R4, a fourth fuse FU4, a first knife switch QS1, and a fifth leakage circuit breaker QF5.

[0102] The three-phase input terminals of the fourth miniature circuit breaker QF4 are respectively connected to the three-phase output terminals of the miniature circuit breaker QF, the three-phase output terminals of the fourth miniature circuit breaker QF4 are respectively connected to the three-phase input terminals of the fourth contactor KM4, and the three-phase output terminals of the fourth contactor KM4 are respectively connected to the three-phase input terminals of the fourth three-phase contactor voltage regulator TB4.

[0103] The A-phase output terminal of the fourth three-phase contact voltage regulator TB4 is connected to the cathode terminal of the fourth-fifth diode D45 and the positive terminal of the fourth-sixth diode D46, respectively. The B-phase output terminal of the fourth three-phase contact voltage regulator TB4 is connected to the cathode terminal of the fourth-third diode D43 and the positive terminal of the fourth-fourth diode D44, respectively. The C-phase output terminal of the fourth three-phase contact voltage regulator TB4 is connected to the cathode terminal of the fourth-first diode D41 and the positive terminal of the fourth-second diode D42, respectively.

[0104] The positive terminal of the fourth-first diode D41, the positive terminal of the fourth-third diode, and the positive terminal of the fourth-fifth diode D45 are connected to the first end of the fourth capacitor C4 and the first end of the fourth voltmeter V4, respectively. The negative terminal of the fourth-second diode D42, the negative terminal of the fourth-fourth diode D44, and the negative terminal of the fourth-sixth diode D46 are connected to the second end of the fourth capacitor C4 and the second end of the fourth voltmeter V4, respectively. The first end of the fourth resistor R4 is connected to the first end of the fourth capacitor C4 via a path of the fourth contactor KM4. The second end of the fourth resistor R4 is connected to the second end of the fourth capacitor C4. The first end of the fourth capacitor C4 is connected to the DV- terminal, and the second end of the fourth capacitor C4 is connected to the DV+ terminal. The DV- terminal is connected to the -DC terminal, and the DV+ terminal is connected to the +DC terminal. The +DC terminal is connected to the first input terminal of the first knife switch QS1, and the -DC terminal is connected to the second input terminal of the first knife switch QS1.

[0105] The first input terminal of the fifth leakage circuit breaker QF5 is connected to the neutral line N output terminal 1N, and the second input terminal of the fifth leakage circuit breaker QF5 is connected to any one of the phase line A output terminal L1, the phase line B output terminal L2 and the phase line C output terminal L3.

[0106] In some specific embodiments, the adjustable DC voltage output unit is connected using a 2.5 mm wire.

[0107] Further, refer to Figure 4 The DC voltage output unit includes a second switching power supply LH2, a third switching power supply LH3, a fourth switching power supply LH4, a sixth knob SA6, a seventh knob SA7, an eighth knob SA8, a ninth knob SA9, a first bell HA1, a second bell HA2, a third bell HA3, a fourth bell HA4, a second and third level socket R5, a fluorescent lamp HL, and a fifth knob SA5.

[0108] The input end of the second switching power supply LH2, the input end of the third switching power supply LH3, the input end of the fourth switching power supply LH4 and the live and neutral wire input ends of the second and third level sockets R5 are all connected to the output end of the fifth leakage circuit breaker QF5.

[0109] A first terminal of a first output end of the second switching power supply LH2 is connected to a -12V DC voltage output terminal. A second terminal of the first output end of the second switching power supply LH2 is connected to a first path of the sixth knob SA6, the first bell HA1, and a +12V DC voltage output terminal in sequence. A second terminal of the first output end of the second switching power supply LH2 is connected to a second path of the sixth knob SA6 and a +12V DC voltage output terminal.

[0110] A first terminal of a second output end of the second switching power supply LH2 is connected to a -24V DC voltage output terminal. A second terminal of the second output end of the second switching power supply LH2 is connected in sequence to a first path of the seventh knob SA7, the second bell HA2, and a +24V DC voltage output terminal. A second terminal of the second output end of the second switching power supply LH2 is connected to a second path of the seventh knob SA7 and a +24V DC voltage output terminal.

[0111] The first terminal of the output end of the third switching power supply LH3 is connected to the -36V DC voltage output terminal. The second terminal of the output end of the third switching power supply LH3 is connected to the first path of the eighth knob SA8, the third bell HA3, and the +36V DC voltage output terminal in sequence. The second terminal of the output end of the third switching power supply LH3 is connected to the second path of the eighth knob SA8 and the +36V DC voltage output terminal.

[0112] The first terminal of the output end of the fourth switching power supply LH4 is connected to the -48V DC voltage output terminal. The second terminal of the output end of the fourth switching power supply LH4 is connected to the first path of the ninth knob SA9, the fourth bell HA4, and the +48V DC voltage output terminal in sequence. The second terminal of the output end of the fourth switching power supply LH4 is connected to the second path of the ninth knob SA9 and the +48V DC voltage output terminal.

[0113] The first terminal of the output end of the fifth leakage circuit breaker QF5, the fluorescent lamp HL, the fifth knob SA5 and the second terminal of the output end of the fifth leakage circuit breaker QF5 are connected in sequence.

[0114] In some specific embodiments, the DC voltage output unit is connected using 2.5mm wire.

[0115] Further, refer to Figure 5, also includes an alarm unit, the alarm unit includes an alarm light HR5, a first end of the alarm light HR5 is connected to the -12V DC voltage output terminal, a second end of the alarm light HR5 is connected to the first end of the first contactor KM1, the first end of the second contactor KM2, the first end of the third contactor KM3 and the first end of the fourth contactor KM4, the second end of the first contactor KM1, the second end of the second contactor KM2, the second end of the third contactor KM3 and the second end of the fourth contactor KM4 are all connected to the +12V DC voltage output terminal.

[0116] Further, refer to Figure 6 , further comprising a temperature control unit, the temperature control unit comprising a temperature sensor, a temperature controller WSK, a first exhaust fan M1, a second exhaust fan M2 and a third fuse FU3,

[0117] The first zero input terminal of the temperature controller WSK is connected to the phase line A output terminal L1 through the third fuse FU3, the ninth input terminal of the temperature controller WSK is connected to the neutral line N output terminal 1N, the first end of the first exhaust fan M1 and the first end of the second exhaust fan M2 are respectively connected to the sixth output terminal of the temperature controller, the second end of the first exhaust fan M1 and the second end of the second exhaust fan M2 are respectively connected to the eighth output terminal of the temperature controller, and the first end, fourth end and fifth end of the temperature controller are all connected to the temperature sensor.

[0118] Reference Figure 7 and Figure 8 The present invention also provides an intelligent distribution box test vehicle, the intelligent distribution box test vehicle including the intelligent distribution box test circuit, and further including:

[0119] A box body, wherein the intelligent distribution box test circuit is installed in the box body;

[0120] A test console is arranged on the box.

[0121] The test console includes a control panel, which is provided with multiple control knobs and sockets. The sockets, terminals, knobs, etc. in the test circuit of the intelligent distribution box are installed on the control panel through wires, which is convenient for staff to operate.

[0122] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the aforementioned embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure. Within the scope of protection of the present invention, its technical solutions and / or implementation methods may be modified and varied in various ways.

Claims

1. An intelligent distribution box test circuit, used to convert the three-phase four-wire in power equipment into multiple current and voltage outputs, applied to power distribution box testing operations, wherein the three-phase four-wire includes phase line A, phase line B, phase line C and neutral line N, characterized in that: Also includes: AC adjustable voltage output unit, used for outputting AC three-phase voltage with adjustable voltage amplitude from 0 to 380V; AC direct voltage output part, used to output AC 380V direct voltage; A three-phase adjustable current output part, used for outputting adjustable current; An adjustable DC voltage output unit, used for outputting an adjustable DC voltage; The DC voltage output unit is used to output a variety of DC voltages.

2. The intelligent distribution box test circuit according to claim 1, characterized in that: The AC adjustable voltage output unit includes a second leakage circuit breaker QF2, a miniature circuit breaker QF, a first miniature circuit breaker QF1, a first contactor KM1, a second contactor KM2, and a first three-phase contact voltage regulator TB1, which are connected in sequence. The input end of the second leakage circuit breaker QF2 is connected to the phase line A, the phase line B, the phase line C and the neutral line N respectively, and the output end of the second leakage circuit breaker QF2 is connected to the input end of the miniature circuit breaker QF respectively. The output terminals of the miniature circuit breaker QF include a phase line A output terminal L1, a phase line B output terminal L2, a phase line C output terminal L3 and a neutral line N output terminal 1N. The phase A output terminal L1, the phase B output terminal L2, and the phase C output terminal L3 are respectively connected to the input terminal of the first miniature circuit breaker QF1, and the output terminal of the first miniature circuit breaker is respectively connected to the input terminal of the first contactor KM1 and the input terminal of the second contactor KM2. The output end of the first contactor KM1 is connected to the input end of the first three-phase contact voltage regulator TB1, and the output end of the first three-phase contact voltage regulator TB1 is respectively connected to the neutral line N output terminal 1N, the phase line A adjustable output terminal 1A, the phase line B adjustable output terminal 1B and the phase line C adjustable output terminal 1C. The phase line A adjustable output terminal 1A is used to output the A phase adjustable voltage, the phase line B adjustable output terminal 1B is used to output the B phase adjustable voltage, and the phase line C adjustable output terminal 1C is used to output the C phase adjustable voltage.

3. The intelligent distribution box test circuit according to claim 2, characterized in that: The AC direct voltage output portion includes a phase line A direct voltage output terminal 2A, a phase line B direct voltage output terminal 2B, and a phase line C direct voltage output terminal 2C. The output end of the second contactor KM2 is connected to the phase line A direct voltage output end 2A, the phase line B direct voltage output end 2B and the phase line C direct voltage output end 2C respectively. It also includes a neutral line N output terminal 1N, which is connected to the neutral line N output terminal 1N of the miniature circuit breaker QF.

4. The intelligent distribution box test circuit according to claim 1, characterized in that: The three-phase adjustable current output unit includes a third miniature circuit breaker QF3, a third contactor KM3, a first single-phase contact voltage regulator TB31, a second single-phase contact voltage regulator TB32, a third single-phase contact voltage regulator TB33, an A-phase current transformer TAa, a B-phase current transformer TAb, a C-phase current transformer TAc, an A-phase ammeter A31, a B-phase ammeter A32, a C-phase ammeter A33, a first power factor meter COS1, a second power factor meter COS2, a third power factor meter COS3, a first connecting terminal 1XB, a second connecting terminal 2XB, a third connecting terminal 3XB, a first current relay KA1, a second current relay KA2, a third current relay KA3, an A-phase current stabilizing device, a B-phase current stabilizing device, and a C-phase current stabilizing device; The three-phase input terminals of the third miniature circuit breaker QF3 are respectively connected to the three-phase output terminals of the miniature circuit breaker QF, and the three-phase output terminals of the third miniature circuit breaker QF3 are respectively connected to the input terminals of the first single-phase contact voltage regulator TB31, the second single-phase contact voltage regulator TB32, and the third single-phase contact voltage regulator TB33. The first single-phase contact voltage regulator TB31 is used to adjust the current output size of phase A, the second single-phase contact voltage regulator TB32 is used to adjust the current output size of phase B, and the third single-phase contact voltage regulator TB33 is used to adjust the current output size of phase C. The first single-phase contact voltage regulator TB31 is connected to the input end of the A-phase current stabilization device, the second single-phase contact voltage regulator TB32 is connected to the input end of the B-phase current stabilization device, and the third single-phase contact voltage regulator TB33 is connected to the input end of the C-phase current stabilization device. The common output terminal of the first single-phase contact voltage regulator TB31, the second single-phase contact voltage regulator TB32 and the third single-phase contact voltage regulator TB33 is connected to the neutral line N output terminal 1N. The A-phase current transformer TAa, the B-phase current transformer Tab, and the C-phase current transformer Tac are respectively arranged on the output end of the first single-phase contact voltage regulator TB31, the output end of the second single-phase contact voltage regulator TB32, and the output end of the third single-phase contact voltage regulator TB33; The first end of the A-phase current transformer TAa is connected to the A-phase ammeter A31 and the first power factor meter COS1 in sequence. The output end of the first power factor meter COS1 is connected to the input end of the first connection terminal 1XB and the input end of the first current relay KA1 respectively. The output end of the first connection terminal 1XB and the output end of the first current relay KA1 are both connected to the A-phase adjustable current output end. The first end of the B-phase current transformer TAb is connected to the B-phase ammeter A32 and the second power factor meter COS2 in sequence. The output end of the second power factor meter COS2 is connected to the input end of the second connection terminal 2XB and the input end of the second current relay KA2 respectively. The output end of the second connection terminal 2XB and the output end of the second current relay KA2 are both connected to the B-phase adjustable current output end. The first end of the C-phase current transformer TAc is connected to the C-phase ammeter A33 and the third power factor meter COS3 in sequence, the output end of the third power factor meter COS3 is respectively connected to the input end of the third connecting terminal 3XB and the input end of the third current relay KA3, and the output end of the third connecting terminal 3XB and the output end of the third current relay KA3 are both connected to the C-phase adjustable current output end.

5. The intelligent distribution box test circuit according to claim 4, characterized in that: The A-phase current stabilizing device includes a third adjustable resistor R31, a first reactor DKQ1, a first capacitor C1-1, a first second capacitor C1-2, a first third capacitor C1-3, a first fourth capacitor C1-4, a first fifth capacitor C1-5 and a first transfer switch KK1. The output end of the first single-phase contact voltage regulator TB31, the third adjustable resistor R31, the first inductor DKQ1 and the first input end of the first conversion switch KK1 are connected in sequence, the output end of the first single-phase contact voltage regulator TB31, the first capacitor C1-1 and the third input end of the first conversion switch KK1 are connected in sequence, the output end of the first single-phase contact voltage regulator TB31, the first second capacitor C1-2 and the fifth input end of the first conversion switch KK1 are connected in sequence, the output end of the first single-phase contact voltage regulator TB31, the first third capacitor C1-3 and the seventh input terminal of the first transfer switch KK1 are connected in sequence, the output terminal of the first single-phase contact voltage regulator TB31, the first four capacitors C1-4 and the ninth input terminal of the first transfer switch KK1 are connected in sequence, the output terminal of the first single-phase contact voltage regulator TB31, the first five capacitors C1-5 and the first one input terminal of the first transfer switch KK1 are connected in sequence, and the second output terminal, the fourth output terminal, the sixth output terminal, the eighth output terminal, the first zero output terminal and the first two output terminals of the first transfer switch KK1 are respectively connected to the neutral line N output terminal 1N; The B-phase current stabilizing device includes a third-second adjustable resistor R32, a second inductor DKQ2, a second-first capacitor C2-1, a second-second capacitor C2-2, a second-third capacitor C2-3, a second-fourth capacitor C2-4, a second-fifth capacitor C2-5, and a second transfer switch KK2. The output end of the second single-phase contact voltage regulator TB32, the third-second adjustable resistor R32, the second inductor DKQ2 and the first input end of the second conversion switch KK2 are connected in sequence, the output end of the second single-phase contact voltage regulator TB32, the second-first capacitor C2-1 and the third input end of the second conversion switch KK2 are connected in sequence, the output end of the second single-phase contact voltage regulator TB32, the second-second capacitor C2-2 and the fifth input end of the second conversion switch KK2 are connected in sequence, the output end of the second single-phase contact voltage regulator TB32, the second-third capacitor C2-3 and the seventh input terminal of the second transfer switch KK2 are connected in sequence, the output terminal of the second single-phase contact voltage regulator TB32, the second fourth capacitor C2-4 and the ninth input terminal of the second transfer switch KK2 are connected in sequence, the output terminal of the second single-phase contact voltage regulator TB32, the second fifth capacitor C2-5 and the first first input terminal of the second transfer switch KK2 are connected in sequence, and the second output terminal, the fourth output terminal, the sixth output terminal, the eighth output terminal, the first zero output terminal and the first second output terminal of the second transfer switch KK2 are respectively connected to the neutral line N output terminal 1N; The C-phase current stabilization device includes a third adjustable resistor R33, a third reactor DKQ3, a third first capacitor C3-1, a third second capacitor C3-2, a third third capacitor C3-3, a third fourth capacitor C3-4, a third fifth capacitor C3-5, and a third transfer switch KK3. The output end of the third single-phase contact voltage regulator TB33, the third adjustable resistor R33, the third inductor DKQ3 and the first input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third first capacitor C3-1 and the third input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third second capacitor C3-2 and the fifth input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third third capacitor C3-1 and the third input end of the third conversion switch KK3 are connected in sequence, C3-3 and the seventh input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third fourth capacitor C3-4 and the ninth input end of the third conversion switch KK3 are connected in sequence, the output end of the third single-phase contact voltage regulator TB33, the third fifth capacitor C3-5 and the first first input end of the third conversion switch KK3 are connected in sequence, and the second output end, fourth output end, sixth output end, eighth output end, first zero output end and first second output end of the third conversion switch KK3 are respectively connected to the neutral line N output end 1N.

6. The intelligent distribution box test circuit according to claim 1, characterized in that: The adjustable DC voltage output unit includes a fourth miniature circuit breaker QF4, a fourth contactor KM4, a fourth three-phase contactor voltage regulator TB4, a fourth-first diode D41, a fourth-second diode D42, a fourth-third diode D43, a fourth-fourth diode D44, a fourth-fifth diode D45, a fourth-sixth diode D46, a fourth capacitor C4, a fourth voltmeter V4, a fourth resistor R4, a fourth fuse FU4, a first knife switch QS1 and a fifth leakage circuit breaker QF5. The three-phase input terminals of the fourth miniature circuit breaker QF4 are respectively connected to the three-phase output terminals of the miniature circuit breaker QF, the three-phase output terminals of the fourth miniature circuit breaker QF4 are respectively connected to the three-phase input terminals of the fourth contactor KM4, and the three-phase output terminals of the fourth contactor KM4 are respectively connected to the three-phase input terminals of the fourth three-phase contactor voltage regulator TB4. The A-phase output terminal of the fourth three-phase contact voltage regulator TB4 is connected to the cathode terminal of the fourth-fifth diode D45 and the positive terminal of the fourth-sixth diode D46, respectively. The B-phase output terminal of the fourth three-phase contact voltage regulator TB4 is connected to the cathode terminal of the fourth-third diode D43 and the positive terminal of the fourth-fourth diode D44, respectively. The C-phase output terminal of the fourth three-phase contact voltage regulator TB4 is connected to the cathode terminal of the fourth-first diode D41 and the positive terminal of the fourth-second diode D42, respectively. The positive terminal of the fourth-first diode D41, the positive terminal of the fourth-third diode, and the positive terminal of the fourth-fifth diode D45 are connected to the first end of the fourth capacitor C4 and the first end of the fourth voltmeter V4, respectively. The negative terminal of the fourth-second diode D42, the negative terminal of the fourth-fourth diode D44, and the negative terminal of the fourth-sixth diode D46 are connected to the second end of the fourth capacitor C4 and the second end of the fourth voltmeter V4, respectively. The first end of the fourth resistor R4 is connected to the first end of the fourth capacitor C4 via a path of the fourth contactor KM4. The second end of the fourth resistor R4 is connected to the second end of the fourth capacitor C4. The first end of the fourth capacitor C4 is connected to the DV- terminal, and the second end of the fourth capacitor C4 is connected to the DV+ terminal. The DV- terminal is connected to the -DC terminal, and the DV+ terminal is connected to the +DC terminal. The +DC terminal is connected to the first input terminal of the first knife switch QS1, and the -DC terminal is connected to the second input terminal of the first knife switch QS1. The first input terminal of the fifth leakage circuit breaker QF5 is connected to the neutral line N output terminal 1N, and the second input terminal of the fifth leakage circuit breaker QF5 is connected to any one of the phase line A output terminal L1, the phase line B output terminal L2 and the phase line C output terminal L3.

7. The intelligent distribution box test circuit according to claim 6, characterized in that: The DC voltage output unit includes a second switching power supply LH2, a third switching power supply LH3, a fourth switching power supply LH4, a sixth knob SA6, a seventh knob SA7, an eighth knob SA8, a ninth knob SA9, a first bell HA1, a second bell HA2, a third bell HA3, a fourth bell HA4, a second and third level socket R5, a fluorescent lamp HL and a fifth knob SA5. The input end of the second switching power supply LH2, the input end of the third switching power supply LH3, the input end of the fourth switching power supply LH4 and the live and neutral wire input ends of the second and third level sockets R5 are all connected to the output end of the fifth leakage circuit breaker QF5. A first terminal of a first output end of the second switching power supply LH2 is connected to a -12V DC voltage output terminal. A second terminal of the first output end of the second switching power supply LH2 is connected to a first path of the sixth knob SA6, the first bell HA1, and a +12V DC voltage output terminal in sequence. A second terminal of the first output end of the second switching power supply LH2 is connected to a second path of the sixth knob SA6 and a +12V DC voltage output terminal. A first terminal of a second output end of the second switching power supply LH2 is connected to a -24V DC voltage output terminal. A second terminal of the second output end of the second switching power supply LH2 is connected in sequence to a first path of the seventh knob SA7, the second bell HA2, and a +24V DC voltage output terminal. A second terminal of the second output end of the second switching power supply LH2 is connected to a second path of the seventh knob SA7 and a +24V DC voltage output terminal. The first terminal of the output end of the third switching power supply LH3 is connected to the -36V DC voltage output terminal. The second terminal of the output end of the third switching power supply LH3 is connected to the first path of the eighth knob SA8, the third bell HA3, and the +36V DC voltage output terminal in sequence. The second terminal of the output end of the third switching power supply LH3 is connected to the second path of the eighth knob SA8 and the +36V DC voltage output terminal. The first terminal of the output end of the fourth switching power supply LH4 is connected to the -48V DC voltage output terminal. The second terminal of the output end of the fourth switching power supply LH4 is connected to the first path of the ninth knob SA9, the fourth bell HA4, and the +48V DC voltage output terminal in sequence. The second terminal of the output end of the fourth switching power supply LH4 is connected to the second path of the ninth knob SA9 and the +48V DC voltage output terminal. The first terminal of the output end of the fifth leakage circuit breaker QF5, the fluorescent lamp HL, the fifth knob SA5 and the second terminal of the output end of the fifth leakage circuit breaker QF5 are connected in sequence.

8. The intelligent distribution box test circuit according to claim 7, characterized in that: It also includes an alarm unit, which includes an alarm light HR5. The first end of the alarm light HR5 is connected to the -12V DC voltage output terminal, the second end of the alarm light HR5 is connected to the first end of the first contactor KM1, the first end of the second contactor KM2, the first end of the third contactor KM3 and the first end of the fourth contactor KM4, and the second end of the first contactor KM1, the second end of the second contactor KM2, the second end of the third contactor KM3 and the second end of the fourth contactor KM4 are all connected to the +12V DC voltage output terminal.

9. The intelligent distribution box test circuit according to claim 1, characterized in that: The system further comprises a temperature control unit, which comprises a temperature sensor, a temperature controller WSK, a first exhaust fan M1, a second exhaust fan M2 and a third fuse FU3. The first zero input terminal of the temperature controller WSK is connected to the phase line A output terminal L1 through the third fuse FU3, the ninth input terminal of the temperature controller WSK is connected to the neutral line N output terminal 1N, the first end of the first exhaust fan M1 and the first end of the second exhaust fan M2 are respectively connected to the sixth output terminal of the temperature controller, the second end of the first exhaust fan M1 and the second end of the second exhaust fan M2 are respectively connected to the eighth output terminal of the temperature controller, and the first end, fourth end and fifth end of the temperature controller are all connected to the temperature sensor.

10. An intelligent distribution box test vehicle, characterized in that: The intelligent distribution box test vehicle comprises the intelligent distribution box test circuit according to any one of claims 1 to 9, and further comprises: A box body, wherein the intelligent distribution box test circuit is installed in the box body; A test console is arranged on the box.

Images