Mutual inductor test vehicle

Abstract

The utility model relates to the technical field of mutual inductor test vehicles, in particular to a mutual inductor test vehicle, which comprises an angle steel frame, a mutual inductor comprehensive characteristic tester, a split type current transformer, an integrated current transformer, a ZW20 type current transformer and a voltage sensor. The top of the angle steel frame is provided with an insulating plate, and four sides of the middle are closed through panels; an integrated current transformer, an integrated current transformer, a ZW20 type current transformer and a voltage sensor are mounted on the insulating plate; the front panel is provided with a binding post and a test clamp, and the rear panel is provided with an aviation socket. And a mutual inductor comprehensive tester is arranged below the panel. The device has the advantages of being high in mobility, easy and convenient to operate, high in safety, high in applicability and the like, and the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer testing vehicles, in particular to a transformer testing vehicle. Background Art

[0002] Instrument transformers (ITs) are key measuring devices in power systems, and their performance stability and accuracy are crucial to their normal operation. Therefore, testing and verifying various IT data are crucial. As a manufacturer of pole-mounted circuit breakers, we currently test ITs phase by phase by inserting and clamping conductive rods. This requires repeated wiring and testing with an integrated TI tester. This testing method is cumbersome and inefficient, and can also lead to significant testing errors due to human error. Utility Model Content

[0003] In order to overcome the existing deficiencies, the utility model provides a transformer testing vehicle.

[0004] The utility model solves the technical problem by adopting the following technical solution: a transformer test vehicle, comprising an angle steel frame, a transformer comprehensive characteristic tester, a ZW32 current transformer, a ZW20 current transformer and a voltage sensor; an insulating plate is placed on the top of the angle steel frame, and the four sides in the middle are closed by panels;

[0005] The insulating plate is equipped with a ZW32 current transformer, a ZW20 current transformer and a voltage sensor; the front panel is provided with a terminal and a test clip, and the rear panel is provided with an aviation socket; a transformer comprehensive tester is provided under the panel.

[0006] According to another embodiment of the present invention, it further includes: three copper rods are fixed on the insulating plate by clamps, the copper rods are fixed to the insulating plate, and the two ends are flattened. The distance between each of the copper rods is equal, wherein a ZW32 current transformer is installed at the end with a larger spacing, and a ZW20 current transformer is placed at the end with a smaller spacing.

[0007] According to another embodiment of the present invention, the copper rods are provided with three pieces, the copper rods on the left and right sides are symmetrically bent about the middle copper rod, and the middle part is placed on the insulating plate and fixed by a clamp.

[0008] According to another embodiment of the present invention, the insulating plate is provided with a stud in the middle, and a voltage sensor is fixed on the stud.

[0009] According to another embodiment of the present invention, the terminal blocks are provided in 10 groups, which are installed on a panel and connected to the test clips via test cables.

[0010] According to another embodiment of the present invention, the bottom of the angle steel frame is provided with four sets of wheels, wherein two sets of wheels are provided with locking mechanisms.

[0011] The beneficial effects of the utility model are as follows: 1. Strong mobility. The transformer test vehicle adopts a vehicle-mounted design, which has good mobility, and the wheel lock function also ensures the safety of the equipment;

[0012] 2. Easy to operate. The transformer test vehicle adopts humanized design and is easy to operate.

[0013] 3. Improve work efficiency. All items can be tested after one wiring. Therefore, the efficiency of transformer detection and calibration can be greatly improved, saving time and cost.

[0014] 4. Safety: the use of insulating panels improves insulation and ensures the safe operation of electrical equipment and lines;

[0015] 5. Strong applicability, suitable for various forms (ZW32, ZW20, split type, integrated type, etc.) of current transformers and voltage sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a rear view of the utility model;

[0019] Figure 3 It is a top view of the present utility model.

[0020] In the figure, 1. Insulation plate, 2. Copper rod, 3. Clamp, 4. Stud, 5. Angle steel frame, 6. Wheel, 7. Panel, 8. Terminal, 9. Test clip, 10. Aviation socket, 11. Transformer comprehensive characteristics tester, 12. ZW20 current transformer, 13. ZW32 current transformer, 14. Voltage sensor. DETAILED DESCRIPTION

[0021] like Figure 1It is a structural schematic diagram of the present invention, a transformer testing vehicle, including an angle steel frame 5, a transformer comprehensive characteristics tester 11, a ZW32 current transformer 13, a ZW20 current transformer 12 and a voltage sensor 14; an insulating plate 1 is placed on the top of the angle steel frame 5, and the four sides in the middle are closed by panels 7; the ZW32 current transformer 13, the ZW20 current transformer 12 and the voltage sensor 14 are installed on the insulating plate 1; the front panel 7 is provided with a terminal 8 and a test clip 9, and the rear panel 7 is provided with an aviation socket 10; the transformer comprehensive tester is provided below the panel 7.

[0022] According to another embodiment of the present invention, it further includes: three copper rods 2 are fixed on the insulating plate 1 by a clamp 3, the copper rods 2 are fixed to the insulating plate 1, and the two ends are flattened. The distance between each of the copper rods 2 is equal, wherein a ZW32 current transformer 13 is installed at the end with a larger spacing, and a ZW20 current transformer 12 is placed at the end with a smaller spacing.

[0023] Specifically, the ZW32 current transformer 13 is an integrated current sensor or a split current sensor.

[0024] According to another embodiment of the present invention, three copper rods 2 are provided, the copper rods 2 on the left and right sides are symmetrically bent about the middle copper rod 2, and the middle part placed on the insulating plate 1 is fixed by a clamp 3.

[0025] According to another embodiment of the present invention, a stud 4 is provided in the middle of the insulating plate 1 , and a voltage sensor 14 is fixed on the stud 4 .

[0026] According to another embodiment of the present invention, the terminal posts 8 are provided in 10 groups, which are installed on the panel 7 and connected to the test clips 9 via test cables.

[0027] Specifically, the 8 groups of terminals 8 in the upper part can be connected to the A-phase current, B-phase current, C-phase current, phase current common terminal, zero-sequence current, and zero-sequence current common terminal respectively, and the two groups of terminals 8 in the lower part can be connected to the zero-sequence voltage and zero-sequence voltage common terminal respectively.

[0028] According to another embodiment of the present invention, further comprising: four sets of wheels 6 are provided at the bottom of the angle steel frame 5 , wherein two sets of wheels 6 are provided with a locking mechanism.

[0029] The specific operation process is to place the transformer to be tested on the transformer test vehicle, and place it at the position of ZW32 current transformer 13, ZW20 current transformer 12 or voltage sensor 14 according to the model, connect the cables, and cooperate with the transformer comprehensive characteristic tester 11. The primary and secondary integrated equipment detection system, load box, three-phase mutual inductor calibrator and other equipment assembled inside the transformer comprehensive characteristic tester 11 can accurately detect various data of the transformer, such as angle difference, ratio difference, capacity, polarity, secondary direct resistance, and volt-ampere characteristics, to complete the test of the transformer.

[0030] The above description is only illustrative and not restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all of them will fall within the scope of protection of the present invention.

Claims

1. A transformer test vehicle, characterized in that: The invention comprises an angle steel frame (5), a transformer comprehensive characteristic tester (11), a ZW32 current transformer (13), a ZW20 current transformer (12) and a voltage sensor (14); an insulating plate (1) is placed on the top of the angle steel frame (5), and the four middle sides are closed by panels (7); the ZW32 current transformer (13), the ZW20 current transformer (12) and the voltage sensor (14) are installed on the insulating plate (1); a terminal (8) and a test clamp (9) are provided on the front panel (7), and an aviation socket (10) is provided on the rear panel (7); and a transformer comprehensive tester is provided below the panel (7).

2. The transformer test vehicle according to claim 1, characterized in that: Three copper rods (2) are fixed to the insulating plate (1) via a clamp (3). The copper rods (2) are fixed to the insulating plate (1) and flattened at both ends. The distances between each of the copper rods (2) are equal, wherein a ZW32 current transformer (13) is installed at the end with a larger spacing, and a ZW20 current transformer (12) is placed at the end with a smaller spacing.

3. The transformer test vehicle according to claim 2, characterized in that: Three copper rods (2) are provided. The copper rods (2) on the left and right sides are symmetrically bent with respect to the middle copper rod (2). The middle portion is placed on the insulating plate (1) and fixed by a clamp (3).

4. The transformer test vehicle according to claim 1, characterized in that: A stud (4) is provided in the middle of the insulating plate (1), and a voltage sensor (14) is fixed on the stud (4).

5. The transformer test vehicle according to claim 1, characterized in that: The terminal posts (8) are provided in 10 groups, mounted on the panel (7), and connected to the test clips (9) via test cables.

6. The transformer test vehicle according to claim 1, characterized in that: Four sets of wheels (6) are provided at the bottom of the angle steel frame (5), two of which are provided with locking mechanisms.

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