A current commutating device for testing a current sensor

Abstract

The utility model provides a kind of current commutating device matched with current sensor test, including the outer box of front side opening, the inner chamber two sides of outer box are equipped with installation track, and bottom plate is equipped between two installation tracks, and the front side upper portion of bottom plate is equipped with relay switch, 485 module and two 50A alternating current contactors arranged left and right, and the front side lower portion is equipped with two 2000A alternating current contactors arranged left and right, and relay switch is powered to 485 module, 50A alternating current contactor and 2000A alternating current contactor, the contact point between two 50A alternating current contactors and the contact point between two 2000A alternating current contactors are connected together respectively by red copper connecting block. The device realizes the function of automatically switching current direction by the mutual cooperation and switching of contactor, so that test is more efficient and convenient, thereby improving productivity and reducing production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic energy storage field technical field especially, it relates to a current commutating device of cooperation current sensor test. BACKGROUND

[0002] Current sensor is a kind of current detection device, can feel the information of measured current, and can change the information detected and felt into the electric signal or other required form information output according to certain rule, to meet the transmission, processing, storage, display, record and control etc.

[0003] At present, the current commutating device for current sensor test, its commutating mode needs manual disassembly to adjust current direction, and the efficiency is low. UTILITY MODEL CONTENTS

[0004] To solve the above problems, the utility model discloses a current commutating device of cooperation current sensor test.

[0005] Specific scheme is as follows:

[0006] A kind of current commutating device of cooperation current sensor test, including the outer box of front side opening, the inner chamber of outer box is equipped with installation rail on both sides, and bottom plate is equipped between two installation rails, the front side upper portion of bottom plate is equipped with relay switch, 485 module and two 50A AC contactors arranged left and right, and the front side lower portion is equipped with two 2000A AC contactors arranged left and right, the relay switch is powered to 485 module, 50A AC contactor and 2000A AC contactor, the contact point between two 50A AC contactors and the contact point between two 2000A AC contactors are connected together respectively by red copper connecting block.

[0007] Further, two 2000A AC contactors are respectively 2000A AC contactor one and 2000A AC contactor two arranged left and right, four top corner end contact points of 2000A AC contactor one are in turn positive pole A, negative pole B, output end D and output end C from left upper corner along clockwise direction, four top corner ends of 2000A AC contactor two are in turn positive pole E, negative pole F, output end H and output end G from left upper corner along clockwise direction, wherein, positive pole A and positive pole E are connected by red copper connecting block, negative pole B and negative pole F are connected by red copper connecting block, output end D and output end G are connected by red copper connecting block, and output end C and output end H are connected by red copper connecting block.

[0008] Further, two 50A AC contactors are respectively 50A AC contactor one and 50A AC contactor two arranged on the left and right, the first and third contact points from left to right on the top of the 50A AC contactor one are positive pole I and negative pole J respectively, the first and third contact points from left to right on the bottom are output end K and output end L respectively, the first and third contact points from left to right on the top of the 50A AC contactor two are positive pole M and negative pole N respectively, the first and third contact points from left to right on the bottom are output end O and output end P respectively, the positive pole I and the positive pole M are connected through a red copper connecting block, the negative pole J and the negative pole N are connected through a red copper connecting block, the output end L and the output end O are connected through a red copper connecting block, and the output end K and the output end P are connected through a red copper connecting block.

[0009] Further, the output end K and the output end L of the 50A AC contactor one are connected to the output end C and the output end D of the 2000A AC contactor one respectively, and the output end K and the output end L of the 50A AC contactor one are also connected to the test tool.

[0010] Further, the relay switch is connected to the 2000A current source, and the output current greater than 20A in the 2000A current source is input to the 2000A AC contactor one, and the output current not greater than 20A is input to the 50A AC contactor one.

[0011] Further, the 485 module is connected to the host computer.

[0012] The beneficial effects of the present application are:

[0013] The device has a novel and unique structure, and the function of automatically switching the current direction is realized through the mutual cooperation and switching of the contactors, so that the test is more efficient and convenient, thereby improving the production capacity and reducing the production cost; wherein, the pair of large current contactors and the pair of small current contactors are connected through the red copper row and controlled through the 485 module, combined with the host computer software, so as to realize the automatic switching of the current direction. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The schematic diagram of the present application.

[0015] Figure 2 The circuit principle diagram in the present application.

[0016] LIST OF REFERENCE NUMERALS:

[0017] 10-electric switch, 20-485 module, 30-50A AC contactor, 40-outer box, 50-2000A AC contactor, 60-bottom plate, 70-red copper connecting block, 80-mounting rail, 90-host computer, 100-2000A current source, 110-test tool;

[0018] 501-2000A AC contactor one, 502-2000A AC contactor two, 1-positive pole A, 2-negative pole B, 3-output end C, 4-output end D, 5-positive pole E, 6-negative pole F, 7-output end G, 8-output end H;

[0019] 301-50A AC contactor one, 302-50A AC contactor two, 9-positive pole I, 10-negative pole J, 11-output end K, 12-output end L, 13-positive pole M, 14-negative pole N, 15-output end O, 16-output end P DETAILED DESCRIPTION

[0020] The utility model will be further illustrated in connection with the drawings and specific embodiments, and it should be understood that the following specific embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model.

[0021] As shown in the figure, a current commutating device matched with a current sensor test, comprising a front opening outer box (40), the inner chamber of the outer box is provided with mounting rail (80) on both sides, and bottom plate (60) is arranged between the two mounting rails, the front upper part of the bottom plate is provided with relay switch (10), 485 module (20) and two 50A AC contactors (30) arranged on the left and right, the front lower part is provided with two 2000A AC contactors (50) arranged on the left and right, the relay switch supplies power to the 485 module, 50A AC contactor and 2000A AC contactor, the contact points of the two 50A AC contactors and the contact points of the two 2000A AC contactors are connected together through purple copper connecting block (70) respectively.

[0022] In the embodiment, the two 2000A AC contactors are 2000A AC contactor one (501) and 2000A AC contactor two (502) arranged on the left and right respectively, the four top corner end contact points of the 2000A AC contactor one are positive pole A (1), negative pole B (2), output end D (4) and output end C (3) in turn from the upper left corner in clockwise direction, the four top corner ends of the 2000A AC contactor two are positive pole E (5), negative pole F (6), output end H (8) and output end G (7) in turn from the upper left corner in clockwise direction, wherein the positive pole A and the positive pole E are connected through the purple copper connecting block, the negative pole B and the negative pole F are connected through the purple copper connecting block, the output end D and the output end G are connected through the purple copper connecting block, and the output end C and the output end H are connected through the purple copper connecting block.

[0023] In the embodiment, two 50A AC contactors are respectively 50A AC contactor one (301) and 50A AC contactor two (302) arranged left and right, the first and third contact points from left to right at the top of the 50A AC contactor one are positive pole I (9) and negative pole J (10) respectively, the first and third contact points from left to right at the bottom of the 50A AC contactor one are output end K (11) and output end L (12) respectively, the first and third contact points from left to right at the top of the 50A AC contactor two are positive pole M (13) and negative pole N (14) respectively, the first and third contact points from left to right at the bottom of the 50A AC contactor two are output end O (15) and output end P (16) respectively, the positive pole I and the positive pole M are connected through a red copper connecting block, the negative pole J and the negative pole N are connected through a red copper connecting block, the output end L and the output end O are connected through a red copper connecting block, and the output end K and the output end P are connected through a red copper connecting block.

[0024] In the embodiment, the output end K and the output end L of the 50A AC contactor one are connected to the output end C and the output end D of the 2000A AC contactor one respectively, and the output end K and the output end L of the 50A AC contactor one are also connected to a test tool (110) respectively.

[0025] In the embodiment, the relay switch is connected to the 2000A current source (100), and the output current greater than 20A in the 2000A current source is input to the 2000A AC contactor one, and the output current not greater than 20A is input to the 50A AC contactor one.

[0026] In the embodiment, the 485 module is connected to the host computer (90).

[0027] The working steps of the application are as follows:

[0028] 1) When the output current of the 2000A constant current source is less than or equal to 20A: the current direction is changed through the 50A AC contactor output. The host computer gives an instruction to the 485 module, so that the 50A AC contactor is opened and closed to realize the current direction switching of the output end C and the output end D. The positive pole I of the 50A AC contactor one is connected to the positive pole of the current source, the negative pole J is connected to the negative pole of the current source, the 485 module receives instruction "A", the 50A AC contactor one is attracted, the output end C is the positive pole and the output end D is the negative pole. The 485 module receives instruction "B", the 50A AC contactor one is disconnected, the 50A AC contactor two is attracted, the output end C is the negative pole and the output end D is the positive pole. Thus the current commutation is realized.

[0029] 2): When the output current of 2000A constant current source is greater than 20A: change the current direction through 2000A AC contactor output. The host computer gives the 485 module command to make 2000A AC contactor open and close, realizing the current direction switching of output terminal C and output terminal D. The positive pole A of 2000A AC contactor one is connected to the positive pole of current source, the negative pole B is connected to the negative pole of current source, the 485 module receives the command "C", 2000A AC contactor one is attracted, the output terminal C is the positive pole, and the output terminal D is the negative pole. The 485 module receives the command "D", 2000A AC contactor one is disconnected, 2000A AC contactor two is attracted, the output terminal C is the negative pole, and the output terminal D is the positive pole. Thus, the current commutation is realized.

[0030] 50A AC contactor and over 2000A AC contactor are connected through normally closed contact to realize interlocking, preventing the equipment damage caused by the simultaneous opening of contactor.

[0031] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiment, but also includes the technical scheme composed of any combination of the above technical features. It should be pointed out that, for ordinary skilled persons in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the protection scope of the utility model.

Claims

1. A current commutation device for testing a current sensor, characterized in that The outer box body comprising a front opening, the inner cavity of the outer box body is provided with mounting rails on both sides, and a bottom plate is arranged between the two mounting rails, the front upper part of the bottom plate is provided with a relay switch, a 485 module and two 50A AC contactors arranged left and right, the front lower part is provided with two 2000A AC contactors arranged left and right, the relay switch supplies power to the 485 module, the 50A AC contactors and the 2000A AC contactors, the contact points of the two 50A AC contactors and the contact points of the two 2000A AC contactors are connected together through copper connecting blocks respectively.

2. A current commutation device for testing a current sensor according to claim 1, characterized in that The two 2000A AC contactors are 2000A AC contactor one and 2000A AC contactor two arranged left and right, the four top corner end contact points of the 2000A AC contactor one are positive electrode A, negative electrode B, output end D and output end C in clockwise direction from the upper left corner, and the four top corner end of the 2000A AC contactor two are positive electrode E, negative electrode F, output end H and output end G in clockwise direction from the upper left corner, wherein the positive electrode A and the positive electrode E are connected through a copper connecting block, the negative electrode B and the negative electrode F are connected through a copper connecting block, the output end D and the output end G are connected through a copper connecting block, and the output end C and the output end H are connected through a copper connecting block.

3. A current commutated device for testing a current sensor according to claim 2, characterized in that The two 50A AC contactors are 50A AC contactor one and 50A AC contactor two arranged left and right, the first and third contact points from left to right on the top of the 50A AC contactor one are positive electrode I and negative electrode J, and the first and third contact points from left to right on the bottom are output end K and output end L, the first and third contact points from left to right on the top of the 50A AC contactor two are positive electrode M and negative electrode N, and the first and third contact points from left to right on the bottom are output end O and output end P, the positive electrode I and the positive electrode M are connected through a copper connecting block, the negative electrode J and the negative electrode N are connected through a copper connecting block, the output end L and the output end O are connected through a copper connecting block, and the output end K and the output end P are connected through a copper connecting block.

4. A current commutated device for testing with a current sensor according to claim 3, characterized in that The output end K and the output end L of the 50A AC contactor one are connected to the output end C and the output end D of the 2000A AC contactor one respectively, and the output end K and the output end L of the 50A AC contactor one are also connected to test tooling.

5. A current commutated device for testing a current sensor according to claim 4, characterized in that The relay switch is connected to a 2000A current source, and the output current greater than 20A in the 2000A current source is input to the 2000A AC contactor one, and the output current not greater than 20A is input to the 50A AC contactor one.

6. A current commutated device for testing a current sensor according to claim 5, characterized in that The 485 module is connected to an upper computer. The 485 module is connected to an upper computer.

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