The low -voltage transformer below 600V becomes a low -voltage transformer.The low -voltage transformer is composed of primary coils, secondary coils and iron heart (magnetic core). The voltage device is changed by electromagnetic induction.In electrical equipment and radio circuits, it is often used as a lifting voltage, matching impedance, and safe isolation.
How much is the low voltage transformer
The low -voltage transformer is composed of primary coils, secondary coils and iron heart (magnetic core). The voltage device is changed by electromagnetic induction.In electrical equipment and radio circuits, it is often used as a lifting voltage, matching impedance, and safe isolation.The main functions of the transformer are: voltage transformation; current transformation, impedance transformation; isolation; voltage voltage, etc., single -phase transformers 220V change 220V price is about 300 yuan, and the price of three -phase transformers and machine tool transformers is about 2000 yuan.
Principles of low -voltage transformers
We all know that electrical and magnetic are two energy that can be transformed in each other. Electricity can raw magnets, and magnetic can also be used.The low -voltage transformer is really applied to this principle, and the voltage adjustment is regulated by the mutual conversion of electrical and magnetic.We have introduced earlier that the main structures of the low -voltage transformer include primary coils, sub -coils and magnetic cores.The primary coil is the coil that directly connects the power supply, while the secondary coil is a coil around the resistance, and the magnetic core is composed of soft magnetic materials, and the coil is around the magnetic core.
Low -voltage transformer parameter
Entering voltage: three -phase 380V and single -phase 220V. The input voltage can meet the requirements of different areas. You can design it according to the special requirements of the customer.Output voltage: three -phase 660V, 600V, 480V, 440V, 415V, 380V, 220V, 200V, 190V; single phase 380, 220V, 200V, 127V, 120V, 110, 100, 36V, 24V, etc.The output voltage can output up to 12 sets of voltage.The number of winding of the output voltage and the output voltage can be designed according to customer requirements.
Low -voltage transformer capacity
1. What is the maximum capacity of outdoor low -voltage transformers?If it is a rod -type power transformer, there are mainly 30, 50, 80, 100, 125, 200, 250, 315 (unit: KVA).315kva is the largest transformer outdoors, and a low -voltage transformer of 100KVA and above needs to install non -contribution compensation.2. Calculation of low -voltage transformer capacity.First understand how much KW is the installed capacity, and continue to determine the natural power factor of the factory. Generally, it is calculated at 0.8, and then KW is converted into KVA.Kw/0.8 = kva.Then, according to the conversion KVA, the transformer nominal capacity is selected nearby. In order to allow the selected transformer to have a certain amount of room, the capacity should not be as high as as high as possible.Generally speaking, between 75 and 95 percent of the rated capacity, the economic operation of the transformer is best.3. The capacity of the transformer is equal to the sum of the three -way capacity. First, know the rated voltage U of the transformer, the rated current I, and then according to the formula: P = √3 × U × i, P is the power, when the high -voltage side voltage current is calculated, andThe calculation results with a low voltage voltage are the same.
Low -voltage transformer model
According to different performance and indicators, the transformer will be divided into multiple models, and its model is from its own winding number+whether the oil circulation is forced+phase number+no load regulation+cooling method+design serial number+""-"+high voltage side voltage+capacity and other indicators.For example, if there is now a transformer with SFPZ9-120000/110, then its relevant information can be understood as: this transformer is a three-phase transformer, and a double-winding oil cycle is compulsive. In the air-cooled stateIn order to load blood pressure, the serial number of the transformer in production design is 9, the capacity of the capacity is 12000kva, and the rated voltage of the high -voltage side is 110kV.

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