A new type of circuit breaker circuit resistance tester connector
A circuit resistance and circuit breaker technology is applied in the field of new circuit breaker circuit resistance tester joints, which can solve the problems of unsuitable current carrying, inaccurate measurement data, and poor uniformity of contact area, and achieve universality and portability. Strong, ensure stability, and improve the effect of measurement accuracy
Active Publication Date: 2022-08-09
STATE GRID TIANJIN ELECTRIC POWER +1
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Problems solved by technology
At present, the test line connectors of the loop resistance tester commonly used in the test are all duckbill clamp structures (including a set of voltage clamps and a set of current clamps), and the contact area is not uniform, resulting in inaccurate measurement data.
At the same time, for the circuit breaker (ABB) with plum blossom contact structure, there is a non-magnetic stainless steel annular tension spring bound around the contact. Sometimes the duckbill clip can only be clamped at the plum blossom contact. When the contact is energized during the loop resistance test, the structure of the ring spring itself is not suitable for carrying current. It may cause burnout under the action of a large current, resulting in the inability to check the status of the device. Give an accurate evaluation
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[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0019] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it should also be understood that when used in this specification of "comprising" and / or "comprising", it indicates There are features, steps, operations, components or modules, components and / or combinations thereof.
[0020] It should be noted that the terms "first", "second", etc. in the description and claims of the present application an...
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The present invention disclosed a new type of circuit breaker circuit resistance tester joint, including two test clamps set symmetrically. One end of the test clip arm is hinged with the connector, and the other end is connected with a test joint.Test a spring connection between the arms, which is connected to the end of the voltage line with one of the test clamp the arm connection, and connects one end of the current line with the connection to the other test clip arm.Compared with the existing technology, the beneficial effect of the present invention is that compared with the traditional measurement clip, the new type of circuit resistor test instrument connector is more contact area, and the contact is stronger. It can be suitable for various different types of circuit breakers.
Description
technical field [0001] The invention relates to an electrical test instrument, in particular to a novel circuit breaker circuit resistance tester connector. Background technique [0002] Circuit resistance test of circuit breaker is an important part of routine test of circuit breaker. Due to the oxidation of the contact surface and poor contact tightening, the contact resistance will increase. When a large current flows, the temperature of the contact point will increase to accelerate the oxidation of the contact surface. It will further increase the contact resistance and even cause an accident, so it is of great significance to accurately measure the loop resistance of the switch. At present, the commonly used loop resistance tester test line connectors are all duckbill clips (including a set of voltage clips and a set of current clips), and the contact area is not uniform, resulting in inaccurate measurement data. At the same time, for a circuit breaker (ABB) with a plu...
Claims
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IPC IPC(8): H01R4/48
CPCH01R4/48
Inventor 秦方宇王敬朋孙渤岩侯鑫潼王亚圣刘婷婷赵宇徐笑天李长玉
Owner STATE GRID TIANJIN ELECTRIC POWER