Introduction and factory operation of Liquid Insulated Transformer

Liquid Insulated Transformer is a device that uses the electromagnetic mutual inductance effect to transform voltage, current, and impedance, so what is the introduction and factory operation of a Liquid Insulated Transformer? Let's take a look together next.

This is the content list:

l Introduction to Liquid Insulated Transformer

l Factory operation of Liquid Insulated Transformer

Introduction to Liquid Insulated Transformer

The Liquid Insulated Transformer is composed of two or more coil windings wound on the same iron core. The windings are connected through an alternating magnetic field and work according to the principle of electromagnetic induction. The installation location of the Liquid Insulated Transformer should be considered to be convenient for operation, maintenance, and transportation, and a safe and reliable place should be selected. When using Liquid Insulated Transformer, the rated capacity of the transformer must be selected reasonably. When the Liquid Insulated Transformer is running at no load, a larger reactive power is required. This reactive power must be supplied by the power supply system. If the capacity of the Liquid Insulated Transformer is selected too large, it will not only increase the initial investment, but also keep in no-load or light-load operation for a long time, which will increase the proportion of the no-load loss, reduce the power factor, and increase the network loss. If the capacity of the Liquid Insulated Transformer is too small, it will overload the Liquid Insulated Transformer for a long time and damage the equipment easily. Therefore, the rated capacity should be selected according to the needs of the electrical load, and should not be too large or too small.

Factory operation of Liquid Insulated Transformer

1. In addition to the factory test of the Liquid Insulated Transformer, the core should be hoisted on-site before installation of Liquid Insulated Transformer is completed and put into operation. The same is true after the Liquid Insulated Transformer overhaul. (It is not necessary to carry out short-distance transportation when there are no bumps, but it should be tested for pressure resistance).

2. When the Liquid Insulated Transformer is out of service for more than half a year, the insulation resistance of the Liquid Insulated Transformer should be measured and an oil pressure test should be performed.

3. The initial input of the Liquid Insulated Transformer should be ≤5 full-voltage closing impulse tests. After overhaul, the Liquid Insulated Transformer should be ≤3 times and it should be operated at no-load for 24h without abnormalities before it can be gradually put into the negative load. And make various records. The purpose is to check whether the dielectric strength of the Liquid Insulated Transformer can withstand the rated voltage or operating overvoltage during operation, and also assess the mechanical strength of the Liquid Insulated Transformer and the reliability of the relay protection action.

4. The insulation resistance of Liquid Insulated Transformer after new installation and overhaul should not be lower than 70% of the manufacturer's test value at the same temperature.

5. To improve the utilization rate of Liquid Insulated Transformer and reduce transformer loss, it is reasonable when the load current of Liquid Insulated Transformer is 75-85% of the rated current.

Liquid Insulated Transformer is one of the main equipment in power plants and substations. The role of a Liquid Insulated Transformer is that it cannot only increase the voltage and send the electric energy to the electricity consumption area but also reduce the voltage to the voltage used at all levels to meet the needs of electricity. In short, both step-up and step-down must be completed by Liquid Insulated Transformer. In the process of transmitting electric energy in the power system, the Liquid Insulated Transformer will inevitably produce two parts of voltage and power loss. When the same power is delivered, the voltage loss is inversely proportional to the voltage, and the Liquid Insulated Transformer power loss is inversely proportional to the square of the voltage. Use to increase voltage and reduce power transmission loss.

Zhejiang Shuntong Electric Co., Ltd. is a professional manufacturing enterprise integrating development, production, sales, and service. The above is about the relevant introduction and factory operation of Liquid Insulated Transformer. If you are interested in Liquid Insulated Transformer, please contact us. Our website is www.sntoom.com. We look forward to your visit and hope to cooperate with you.