Transformer ESR test tool

Abstract

The utility model relates to the field of transformer testing, in particular to a transformer ESR testing tool. Comprising a test chuck, a positioning tray and a to-be-tested transformer, a main body of the to-be-tested transformer is arranged in a main body groove of the positioning tray, and a primary terminal and a secondary terminal of the to-be-tested transformer are fixed through a terminal block and then are arranged at corresponding positions of a terminal frame of the positioning tray; the two test clamp probes of the test clamp are clamped on two sides of the connecting holes of the two primary terminals of the terminal block, the two short circuit clamp probes are clamped on two sides of the connecting holes of the two secondary terminals of the terminal block, and the two short circuit clamp probes are in short circuit connection through a wire. As the base is provided with the groove capable of accommodating the main body of the test transformer and one side of the clamping groove is provided with the clamping groove for placing the terminal block of the transformer, the third terminal and the fourth terminal are short-circuited, and the first terminal and the second terminal are connected with the LCR tester for measurement.

Description

Technical Field

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

[0002] The ESR test, also known as the equivalent series resistance test, requires short-circuiting the transformer's secondary to test the primary's equivalent series resistance. Because the finished transformer's primary and secondary terminals are mounted in a terminal block, short-circuiting the secondary and testing the primary are difficult, necessitating specialized tooling for ESR testing. Summary of the Invention

[0003] The utility model provides a transformer ESR test tool. The base is designed with a groove that can accommodate the test transformer body, and the front end has a slot for placing the transformer terminal block. Terminals 3 and 4 are short-circuited, and terminals 1 and 2 are connected to an LCR tester for measurement.

[0004] The technical solution of the utility model is: a transformer ESR testing tool, comprising a test chuck, a positioning tray, and a transformer to be tested, wherein the main body of the transformer to be tested is arranged in a main body groove of the positioning tray, and the primary terminals and secondary terminals of the transformer to be tested are fixed by a terminal block and arranged at corresponding positions on a terminal frame of the positioning tray; two test clip probes of the test chuck are clamped on both sides of the connection holes of the two primary terminals of the terminal block, and two short-circuit clip probes are clamped on both sides of the connection holes of the two secondary terminals of the terminal block, and the two short-circuit clip probes are short-circuited and connected by wires.

[0005] In the above technical solution, the test clamp includes a bracket, a test clamp cylinder, a short-circuit clamp cylinder, a test clamp probe connecting plate, a short-circuit clamp probe connecting plate, a test clamp probe, a short-circuit clamp probe, a cylinder connecting plate, a pressure block I and a pressure block II. One test clamp cylinder and two short-circuit clamp cylinders are arranged side by side on the cylinder connecting plate, and the bracket is arranged on one side of the cylinder connecting plate; two test clamp probe connecting plates are symmetrically arranged on both sides of the test clamp cylinder and connected to the clamping claws of the test clamp cylinder, and two sets of short-circuit clamp probe connecting plates are symmetrically arranged on both sides of the two short-circuit clamp cylinders and connected to the clamping claws of the short-circuit clamp cylinder; two sets of test clamp probes are arranged on the inner side of the test clamp probe connecting plate, and two sets of short-circuit clamp probes are respectively arranged on the inner sides of the two sets of short-circuit clamp probe connecting plates. The two sets of short-circuit clamp probes are short-circuited by wires, and the pressure block I is arranged on the outer side of the test clamp cylinder, and the pressure block II is arranged on the outer side of the short-circuit clamp cylinder.

[0006] In the above technical solution, the positioning tray includes a base, a main body groove and a terminal frame, the main body groove is arranged in the middle of the base, and the terminal frame is arranged on one side of the main body groove.

[0007] The utility model discloses beneficial effect is: because the recess that can hold test transformer main part is designed to the base, the clamping groove that sets up the terminal block of transformer is set up in the one side of clamping groove, and the short circuit is carried out to three four terminals, and the measurement is carried out to the connection of one two terminals LCR tester. BRIEF DESCRIPTION OF DRAWINGS

[0008] Fig. 1 It is the structure schematic drawing of the utility model;

[0009] Fig. 2 It is the structure schematic drawing of the utility model positioning tray;

[0010] Fig. 3 It is the structure schematic drawing of the utility model transformer to be measured;

[0011] Fig. 4 It is the structure schematic drawing of the utility model transformer to be measured and positioning tray connection.

[0012] In the drawing: 1, test chuck;1-1, support;1-2-1, test chuck air cylinder;1-2-2, short-circuit clamp air cylinder;1-3-1, test chuck probe connecting plate;1-3-2, short-circuit clamp probe connecting plate;1-4-1, test chuck probe;1-4-2, short-circuit clamp probe;1-5, air cylinder connecting plate 1-5;1-6-1, pressure block I;1-6-2, pressure block II;2, positioning tray;2-1, base;2-2 main body recess;2-3, terminal rack;3, transformer to be measured;3-1, primary terminal;3-2, secondary terminal;3-3, main body;3-4, terminal block. DETAILED DESCRIPTION

[0013] As Figs. 1 to 4 Indicated, a kind of transformer ESR test tool, including test chuck 1, positioning tray 2 and transformer to be measured 3;

[0014] Positioning tray 2 includes base 2-1, main body recess 2-2 and terminal rack 2-3, main body recess 2-2 is opened in the middle of base 2-1, and terminal rack 2-3 is set in the side of main body recess 2-2 setting;

[0015] The test chuck 1 comprises a support 1-1, a test chuck cylinder 1-2-1, a short circuit chuck cylinder 1-2-2, a test chuck probe connecting plate 1-3-1, a short circuit chuck probe connecting plate 1-3-2, a test chuck probe 1-4-1, a short circuit chuck probe 1-4-2, a cylinder connecting plate 1-5, a pressing block I 1-6-1 and a pressing block II 1-6-2, one test chuck cylinder 1-2-1 and two short circuit chuck cylinders 1-2-2 are fixed side by side at the lower end surface of the cylinder connecting plate 1-5, and the connecting support 1-1 is fixed at one side of the cylinder connecting plate 1-5; the test chuck probe connecting plate 1-3-1 is symmetrically arranged at both sides of the test chuck cylinder 1-2-1 and connected with the clamping jaws of the test chuck cylinder 1-2-1, the short circuit chuck probe connecting plate 1-3-2 is symmetrically arranged at both sides of the two short circuit chuck cylinders 1-2-2 and connected with the clamping jaws of the short circuit chuck cylinders 1-2-2; the test chuck probe 1-4-1 is arranged inside the test chuck probe connecting plate 1-3-1, and the short circuit chuck probe 1-4-2 is arranged inside the two short circuit chuck probe connecting plates 1-3-2; the pressing block I 1-6-1 is connected with the test chuck cylinder 1-2-1, and the pressing block II 1-6-2 is connected with the short circuit chuck cylinder 1-2-2.

[0016] The main body 3-3 of the transformer to be tested 3 is placed in the main body groove 2-2 of the positioning tray 2, the primary terminals 3-1 and the secondary terminals 3-2 of the transformer to be tested 3 are first fixed through the terminal block 3-4, and then fixed at the corresponding positions of the terminal rack 2-3 of the positioning tray 2; two test chuck probes 1-4-1 are clamped at both sides of the connecting holes of the two primary terminals 3-1 of the terminal block 3-4, and two short circuit chuck probes 1-4-2 are clamped at both sides of the connecting holes of the two secondary terminals 3-2 of the terminal block 3-4, and the two sets of short circuit chuck probes 1-4-2 are short-circuited through wires.

[0017] Working principle: The primary and secondary outputs of the transformer are four lead terminals, and the four terminals are installed in the terminal rack. The test chuck probe 1-4-1 of the test chuck 1 is connected to the test instrument, and the two sets of short circuit chuck probes 1-4-2 are short-circuited through the short-circuit wires. When testing ESR, first place the transformer to be tested 3 in the positioning tray 2, place the main body 3-3 of the transformer in the main body groove 2-2 and fix it, and place the terminal block 3-4 in the terminal rack 2-3 and fix it. Start testing, the test chuck 1 as a whole descends, the pressing block I 1-6-1 and the pressing block II 1-6-2 press the terminal block 3-4, then the test chuck cylinder 1-2-1 drives the test chuck probe 1-4-1 to clamp the corresponding holes of the two primary terminals 3-1 on the terminal block 3-4, the short circuit chuck cylinder 1-2-2 drives the short circuit chuck probe 1-4-2 to clamp the corresponding holes of the two secondary terminals 3-2 on the terminal block 3-4, and then start the instrument to measure ESR.

Claims

1. A transformer ESR test tool, characterized by: The invention comprises a test chuck (1), a positioning tray (2) and a transformer to be tested (3), wherein a main body (3-3) of the transformer to be tested (3) is arranged in a main body groove (2-2) of the positioning tray (2), and a primary terminal (3-1) and a secondary terminal (3-2) of the transformer to be tested (3) are fixed by a terminal block (3-4) and then arranged at corresponding positions of a terminal frame (2-3) of the positioning tray (2); two test clip probes (1-4-1) of the test chuck (1) are clamped on both sides of connection holes of two primary terminals (3-1) of the terminal block (3-4), and two short-circuit clip probes (1-4-2) are clamped on both sides of connection holes of two secondary terminals (3-2) of the terminal block (3-4), and the two short-circuit clip probes (1-4-2) are short-circuited and connected via wires.

2. The transformer ESR testing tool according to claim 1, characterized in that: The test clamp (1) comprises a bracket (1-1), a test clamp cylinder (1-2-1), a short-circuit clamp cylinder (1-2-2), a test clamp probe connecting plate (1-3-1), a short-circuit clamp probe connecting plate (1-3-2), a test clamp probe (1-4-1), a short-circuit clamp probe (1-4-2), a cylinder connecting plate (1-5), a pressure block I (1-6-1) and a pressure block II (1-6-2); one test clamp cylinder (1-2-1) and two short-circuit clamp cylinders (1-2-2) are arranged side by side on the cylinder connecting plate (1-5); the bracket (1-1) is arranged on one side of the cylinder connecting plate (1-5); two test clamp probe connecting plates (1-3-1) are symmetrically arranged on the test clamp cylinder (1- The two sides of the short-circuit clamp probe connecting plates (1-3-2) are symmetrically arranged on the two sides of the short-circuit clamp cylinders (1-2-2) and connected to the clamping claws of the short-circuit clamp cylinders (1-2-2); the two sets of the test clamp probes (1-4-1) are arranged on the inner side of the test clamp probe connecting plates (1-3-1); the two sets of the short-circuit clamp probes (1-4-2) are respectively arranged on the inner side of the two sets of short-circuit clamp probe connecting plates (1-3-2); the two sets of the short-circuit clamp probes (1-4-2) are short-circuited and connected through a wire; the pressure block I (1-6-1) is arranged on the outer side of the test clamp cylinder (1-2-1); and the pressure block II (1-6-2) is arranged on the outer side of the short-circuit clamp cylinder (1-2-2).

3. The transformer ESR testing tool according to claim 1, characterized in that: The positioning tray (2) comprises a base (2-1), a main body groove (2-2) and a terminal frame (2-3); the main body groove (2-2) is arranged in the middle of the base (2-1), and the terminal frame (2-3) is arranged on one side of the main body groove (2-2).

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