Current transformer transformation ratio tester

Abstract

The utility model discloses a current transformer transformation ratio tester, which comprises a tester and a hand-held handle connected with the tester, one end of the hand-held handle is connected with a U-shaped chuck, two ends of a top branch of the U-shaped chuck are respectively connected with clamping pieces through a rotating shaft and a torsion spring, and the two clamping pieces are arranged in a staggered manner; a clamping assembly is arranged at the bottom of the inner wall of the U-shaped chuck. An anti-disengaging assembly is arranged on the outer side of the handheld grab handle and the outer side of the U-shaped chuck, the anti-disengaging assembly comprises two symmetrically-arranged L-shaped stop levers, one ends of the L-shaped stop levers are arranged on the outer sides of the clamping pieces, the other ends of the L-shaped stop levers are connected to a C-shaped pressing plate, the C-shaped pressing plate is slidably connected to the handheld grab handle, and a plurality of first springs are connected between the handheld grab handle and the C-shaped pressing plate. According to the utility model, the clamping assembly can be matched with the clamping piece to fix the component and prevent the component from loosening, and the anti-loosening assembly is utilized to limit the position of the clamping piece when the equipment is used, so that the component is prevented from being separated when the clamping piece is opened.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical testing equipment, in particular to a current transformer ratio tester. Background Art

[0002] The high and low voltage current transformer ratio tester can accurately measure the ratio of current transformers of 35kv and below without removing the wires or cutting off the power. The primary current signal is transmitted wirelessly to absolutely guarantee the reliability of insulation, thereby ensuring the safety of operation. The primary clamp meter is connected to the high-voltage insulating rod, which can very conveniently measure the high-altitude current. During the specific operation, it is necessary to manually clamp the clamp head to the electrical equipment to be measured. The clamp head of the traditional current transformer ratio tester will become loose when clamping components of different models, and the components may detach from the clamp head. Utility Model Content

[0003] The utility model aims to provide a current transformer ratio tester to solve the above problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a current transformer ratio tester, comprising a tester and a handheld handle connected to the tester, wherein one end of the handheld handle is connected to a U-shaped chuck, and two ends of a fork of a top portion of the U-shaped chuck are respectively connected to clips through a rotating shaft and a torsion spring, and the two clips are staggered; a clamping assembly is provided on the bottom of the inner wall of the U-shaped chuck; an anti-slip assembly is provided on the outer sides of the handheld handle and the U-shaped chuck, and the anti-slip assembly comprises two symmetrically arranged L-shaped baffles, one end of the L-shaped baffle is placed on the outer side of the clip, and the other end is connected to a C-shaped pressing plate, the C-shaped pressing plate is slidably connected to the handheld handle, and a plurality of first springs are connected between the handheld handle and the C-shaped pressing plate.

[0006] Furthermore, the tester and the handheld handle are electrically connected via a transmission line.

[0007] Furthermore, current transformers are provided on the inner walls of the U-shaped clamp and the clamp.

[0008] Furthermore, the clamping assembly includes a T-rod and an arc plate, the arc plate moves up and down in the U-shaped chuck, one end of the T-rod is connected to the arc plate, and the other end of the T-rod slides in a first sliding groove opened at the bottom of the U-shaped chuck, and a second spring is mounted on the body of the T-rod.

[0009] Furthermore, a second slide groove is provided on the C-shaped pressing plate, a slide rail is provided on the hand-held handle, and the C-shaped pressing plate is slidably connected to the slide rail through the second slide groove.

[0010] Compared with the prior art, the beneficial technical effects of the utility model are:

[0011] The utility model utilizes a clamping assembly to cooperate with a clip to fix components to prevent loosening, and utilizes an anti-dropping assembly to limit the position of the clip when the device is in use to prevent the clip from opening and causing the components to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 This is the main view of the current transformer ratio tester of the utility model when not in use;

[0014] Figure 2 This is the main view of the current transformer ratio tester of the utility model when in use;

[0015] Figure 3 It is a top sectional view of the installation of the anti-drop assembly;

[0016] Explanation of the reference numerals: 1. Tester; 2. Handle; 3. U-shaped chuck; 4. Clip; 5. L-shaped stop rod; 6. C-shaped pressing plate; 7. First spring; 8. T-shaped rod; 9. Arc plate; 10. First slide groove; 11. Second spring. DETAILED DESCRIPTION

[0017] like Figure 1-3 As shown, a current transformer ratio tester includes a tester 1 and a handheld handle 2 connected to the tester 1, and the tester 1 and the handheld handle 2 are electrically connected through a transmission line.

[0018] One end of the handheld handle 2 is connected to a U-shaped clamp 3, and both ends of the top fork of the U-shaped clamp 3 are connected to clips 4 through a rotating shaft and a torsion spring respectively. The two clips 4 are staggered, and current transformers are provided on the inner walls of the U-shaped clamp 3 and the clips 4.

[0019] A clamping assembly is provided on the bottom of the inner wall of the U-shaped chuck 3, and the clamping assembly includes a T-shaped rod 8 and an arc plate 9. The arc plate 9 moves up and down in the U-shaped chuck 3, one end of the T-shaped rod 8 is connected to the arc plate 9, and the other end of the T-shaped rod 8 slides in a first slide groove 10 provided at the bottom of the U-shaped chuck 3, and a second spring 11 is sleeved on the rod body of the T-shaped rod 8. When in use, the arc plate 9 will change its position according to the model of the component, and the component is fixed inside the U-shaped chuck 3 by the cooperation of the arc plate 9 and the two clips 4.

[0020] An anti-slip assembly is provided on the outer side of the handheld handle 2 and the U-shaped clamp 3, and the anti-slip assembly includes two symmetrically arranged L-shaped baffle rods 5, one end of the L-shaped baffle rod 5 is placed on the outer side of the clamp 4, and the other end is connected to the C-shaped pressing plate 6, and the C-shaped pressing plate 6 is slidably connected to the handheld handle 2, and a plurality of first springs 7 are connected between the handheld handle 2 and the C-shaped pressing plate 6.

[0021] The C-shaped pressing plate 6 is provided with a second slide groove, and the hand grip 2 is provided with a slide rail, and the C-shaped pressing plate 6 is slidably connected to the slide rail through the second slide groove. When in use, the C-shaped pressing plate 6 is pressed to compress the first spring 7, and the C-shaped pressing plate 6 slides on the slide rail, driving the end of the L-shaped blocking rod 5 to press on the top of the clip 4, so that the clip 4 cannot rotate outward, thereby preventing components from escaping from the inside of the U-shaped clamp 3.

[0022] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A current transformer ratio tester, characterized in that: The invention comprises a tester (1) and a hand-held handle (2) connected to the tester (1), one end of the hand-held handle (2) is connected to a U-shaped chuck (3), the top fork of the U-shaped chuck (3) is connected to clips (4) at both ends through a rotating shaft and a torsion spring, and the two clips (4) are staggered; a clamping assembly is provided on the bottom of the inner wall of the U-shaped chuck (3); an anti-slip assembly is provided on the outer side of the hand-held handle (2) and the U-shaped chuck (3), and the anti-slip assembly comprises two symmetrically arranged L-shaped baffles (5), one end of the L-shaped baffles (5) is placed on the outer side of the clips (4), and the other end is connected to a C-shaped pressing plate (6), and the C-shaped pressing plate (6) is slidably connected to the hand-held handle (2), and a plurality of first springs (7) are connected between the hand-held handle (2) and the C-shaped pressing plate (6).

2. The current transformer ratio tester according to claim 1, characterized in that: The tester (1) and the handheld handle (2) are electrically connected via a transmission line.

3. The current transformer ratio tester according to claim 1, characterized in that: Current transformers are provided on the inner walls of the U-shaped clamp (3) and the clamping piece (4).

4. The current transformer ratio tester according to claim 1, characterized in that: The clamping assembly comprises a T-shaped rod (8) and an arc plate (9), wherein the arc plate (9) moves up and down in the U-shaped chuck (3), one end of the T-shaped rod (8) is connected to the arc plate (9), and the other end of the T-shaped rod (8) slides in a first sliding groove (10) provided at the bottom of the U-shaped chuck (3), and a second spring (11) is sleeved on the rod body of the T-shaped rod (8).

5. The current transformer ratio tester according to claim 1, characterized in that: The C-shaped pressing plate (6) is provided with a second sliding groove, the hand-held handle (2) is provided with a sliding rail, and the C-shaped pressing plate (6) is slidably connected to the sliding rail via the second sliding groove.

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