Device convenient for current transformer test
A technology of current transformers and current transformers, which is applied in the direction of measuring devices, instruments, and measuring electrical variables. It can solve problems such as low wiring efficiency, complicated test wiring, and difficult handling, so as to achieve easy portability, improve test efficiency, and reduce test loads. Effect of Wiring Effort
Pending Publication Date: 2021-09-28
浙江八达电子仪表有限公司 +1
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Problems solved by technology
[0002] The current transformer is an instrument that converts the large current on the primary side into a small current on the secondary side based on the principle of electromagnetic induction. At present, the core power supply components used in power testing equipment such as current transformer on-site calibrator and volt-ampere characteristic tester, current The source is a split structure, this method has the following disadvantages 1. The required test devices and accessories are many, and it is difficult to carry; 2. The cost is high and the efficiency is low; 3. The test wiring is complicated, which is easy to cause wiring errors and low wiring efficiency
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[0023] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, a device that is convenient for testing current transformers includes a box body 1 and a circuit board 2 arranged in the box body 1, and the box body 1 is provided with an upper cover that seals the circuit board 2 in the box body 1 3. The circuit board 2 is provided with a contactor 21 connected to the 220V mains 8, a voltage regulator 22 for converting the AC input into an adjustable AC power, and a converter 23 for adjusting the output current. The voltage regulator 22 is connected to the contactor 21, the converter 23 includes an input end 231 and an output end 232, the input end 231 is connected to the voltage regulator 22, and the output end 232 is connected to the measured current transformer 7 , the output terminal 232 is connected with a primary current measurement unit 4, the circuit board 2 is also provided with a secondary current measurement unit 5 connected to the measured current transformer...
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The invention relates to a device convenient for a current transformer test. The device comprises a box body and a circuit board, an upper cover is arranged on the box body, and a contactor, a voltage regulator and a converter are arranged on the circuit board; the voltage regulator is connected with the contactor, the converter comprises an input end and an output end, the input end is connected with the voltage regulator, and the output end is connected with a tested current transformer. The invention has the advantages that the current output is adjusted through the converter, so that the integrated current output is realized; the test can be carried out only by connecting a current line and a power line in a field test, so that the test wiring workload is greatly reduced and the potential safety hazard caused by artificial wiring error is reduced while the requirement of the field test standard is met, and the test efficiency is greatly improved; a portable operation platform not only guarantees the safe operation of experimenters, but also can arrange test sites according to different field conditions, is flexible and reliable, and greatly improves the field adaptability.
Description
technical field [0001] The invention relates to a device for facilitating testing of current transformers. Background technique [0002] The current transformer is an instrument that converts the large current on the primary side into a small current on the secondary side based on the principle of electromagnetic induction. At present, the core power supply components used in power testing equipment such as current transformer on-site calibrator and volt-ampere characteristic tester, current The source is a split structure. This method has the following disadvantages: 1. There are many test devices and accessories required, and it is difficult to carry; 2. The cost is high and the efficiency is low; 3. The test wiring is complicated, which is easy to cause wiring errors and low wiring efficiency. Contents of the invention [0003] The purpose of the present invention is to provide a device that is convenient for testing current transformers. During on-site testing, only th...
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IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 徐良凯黄林章盛颖吴文晓贾飞云李晗周俊莹
Owner 浙江八达电子仪表有限公司