Tongfang shares: Ten years later, it is still a sunrise industry - high-brightness LED business prospect analysis
High Voltage Main Power Transformer
The main transformer, which is the main step-down transformer used for power transmission and transformation in a unit or substation, is also the core part of the substation.
6. 25 # or 45 # transformer oil is used as transformer oil to increase insulation strength and cool down the transformer;
High Voltage Power Transformer,The main transformer,main transformer Henan New Electric Power Co.,Ltd. , https://www.newelectricpower.com
The actual value of the company is still not fully recognized by the market. The current valuation is obviously low, so the rating of the purchase of Tongfang shares is maintained, with a target of 45 yuan.
The risk suggests that the company's high-brightness LED project, if not expected to be built, will have a certain impact on the company's future performance, so there is a risk that the LED project will progress less than expected. 
The main transformer is composed of the following aspects:
1. Body: The body directly converts electromagnetic energy, which is composed of iron core, coil, lead wire, insulation, etc.
2. Oil tank and cover: mainly composed of box, cover, bottom and accessories (such as 50 valve, oil sample valve, oil drain plug, grounding bolt, etc.).
3. Protection device: mainly composed of oil conservator, oil meter, oil purifier, gas relay, Moisture Absorber, thermometer, Pressure Relief Valve, etc.
4. Cooling mode: oil immersed self cooling, oil immersed air cooling, strong oil water cooling, strong oil air cooling.
5. Outgoing line bushing: It is composed of 25/300 cable bushing and BF-6/2000, BF-1/1000, BF - l/600 and BF-1/300 bushings.
