The transformer is also called a transformer for the instrument. Voltage transformers and current transformers are collectively referred to as transformers. The transformer can achieve high -voltage direction to low voltage. Large current to small current conversion. At the same timeThe staff is separated. Therefore, the function of the transformer is mainly realized as the measurement or protection system, as well as protection equipment and personal safety, and has been widely used in many industries.
Transformer manufacturer
1. Brief introduction of Harbin Sandida Electric Power Technology Co., Ltd.: Harbin Sandida Electric Power Technology Co., Ltd. insists that based on advanced process equipment and detection methods, it gradually takes high -tech products and perfect after -sales service, strictly in accordance with technology and technologyThe standards are operated and accepted, and the quality original files and product after -sales service tracking files are established and improved the entire process of product manufacturing.2. Under Donghua Co., Ltd., there are power manufacturing companies, electrical manufacturing companies, and transformers manufacturing companies."Create value for customers; seek development for enterprises; take responsibility for society" to guide the companys operation production 3. Hebei Beihe Electric Co., Ltd. Company profile: Founded in 2009, the continuous performance of the start of the performance has increased,With strong technical strength, advanced manufacturing equipment and scientific management models, enterprises occupy a certain position in the intestinal industry.
Transformer principle
The working principle is in our power supply line. In addition to the low -voltage and small current lines used daily, when some special industries need high voltage operations, if we directly measure the line measurement, it will be more dangerous, so we can convey through the transformer to conversion through the transformer device.And the role of electrical isolation, which is the measurement of the second instrument to transform the original values. The working principle is a bit similar to the principle of electromagnetic induction.Actual current voltage.The structure of structural principles is often composed of winding, iron -hearted, and structures, shells, and wiring terminals, and the transformer is divided into multiple ways, such as wearing a heart -wearing current transformer, multi -tap current transformers.And different transformers, combined current voltage voltage transformers, etc., take the heart -type current transformers as an example. It is a circular shape made of silicon steel sheet.The iron heart is uniformly wrapped, and then a closed loop can be formed with the instrument, transmitter, etc.The more turns around the wires, the smaller the change ratio.
Transformer connection
1. Three -phase complete star wiring can accurately reflect the real current of each phase in the three phases.This method is applied to a large -current connection system, protecting the three -phase short -circuit, two -phase short -circuit and single -phase grounding short circuit of the line.2. Incorrect star wiring of two -phase and two relays can accurately reflect the real current of the two phases.This method is applied to a small current connection system that does not ground the median point of 6 to 10KV, and the three -phase short circuit and two -phase short circuit of the protection line.Complete astrological wiring two -phase two -phase relay incomplete star wiring 3. Different differences reflect the two -difference current.This wiring method is applied to a small -current connection system that is not grounded at 6 to 10kV. The three -phase short -circuit, two -phase short circuit, small -capacity motor protection, and small -capacity transformer protection of the line.
Transformer model
The role of intestinal sensor
In the route of power supply or electricity, the gap between the current and the voltage is very large. The gap between the current can be tens of thousands of tens of thousands, and the gap between the voltage can also be several million.Under such a large gap, direct measurement current or voltage is very dangerous. In order to facilitate measurement and measure the safety of measurement, the transformer is used to play a variable transformer and electrical isolation.In actual work, the display instrument is mostly pointer voltage current, and the secondary current of the current intestines is mostly Abe level.The secondary current is also the milliamp -level micro -sensor is often used to connect the large intestines and sampling to achieve the smooth progress of measurement.

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