Handheld transformer ratio group tester
A transformer and transformation ratio group technology, which is applied in the field of hand-held transformer transformation ratio group testers, can solve the problems of single function, low intelligence, and bulky volume of test instruments, and achieve high test accuracy, easy portability, and operation Replace the simple effect
Pending Publication Date: 2019-11-08
SATE GRID ZHEJIANG CHANGXING COUNTY POWER SUPPLY +1
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[0003] The purpose of the present invention is to provide a hand-held transformer ratio group tester, which has the advantages of convenient portability, high test accuracy, battery power supply, and the ability to cope with various test conditions, and can solve the function comparison of test instruments in the prior art. Single, cumbersome, and low intelligence
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] A hand-held transformer transformation ratio group tester includes a molded case 1 of a host, a host 2 and a three-phase measurement function module 3, and the three-phase measurement function module 3 is installed inside the host 2.
[0021] see figure 1 1. The molded casing 1 of the main engine includes a plastic casing upper cover 11 and a plastic casing lower cover 12, and the plastic casing upper cover 11 is fixedly connected with the plastic casin...
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The invention discloses a handheld transformer ratio group tester which comprises a main unit plastic shell, a main unit and a three-phase measurement function module. The three-phase measurement function module is installed in the main unit. A good damping and protecting effect is provided for the main unit by arranging an upper main unit support, a lower main unit support, an upper main unit rubber sleeve and a lower main unit rubber sleeve. The whole main unit plastic shell can be lifted up through a handle, and the tester is convenient to carry. A system power supply is set as a lithium battery power supply structure, and operation and replacement are simple. A relay switching unit is switched to a selected test phase under the control of a main control CPU. Then, the test phase is output to a test product through a testing system terminal, the test system terminal transmits signals input by the test product to an AD sampling conversion module for analog-digital conversion, a central processing unit calculating unit calculates the result, and the blind test function is realized, the ratio group testing is accurately conducted without knowing the high and low voltage combining means and the group, and the testing precision is high.
Description
technical field [0001] The invention relates to the technical field of transformer ratio group testing, in particular to a hand-held transformer ratio group tester. Background technique [0002] Transformation ratio measurement is a must-do item for transformer handover and maintenance tests. Traditional test instruments have single functions, bulky volume, and low intelligence. AC power supply is required for on-site use, and there are more requirements for on-site use conditions. , so that the workload is large and the efficiency is reduced; some test products may also have nameplates that are missing or unclear and unrecognizable, and traditional instruments may not be able to test, which brings inconvenience to on-site use. Therefore, with the development of electronic technology, With the improvement of integrated circuit technology, the use of instruments should be more and more highly integrated, compact, light, and highly intelligent. Therefore, there is an urgent ne...
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IPC IPC(8): G01R29/20
CPCG01R29/20
Inventor 王佳吴仕兵何海国杨海涛
Owner SATE GRID ZHEJIANG CHANGXING COUNTY POWER SUPPLY