Layout features: series of dry transformers can be made into open or protective type, with advantages such as low consumption, low noise, good fireproof performance and non-pollution. Transformers are divided into control transformers and lighting transformers by product use. The control transformer is a strong transformer. In addition to the lighting transformer for the machine tool, the lighting transformer belongs to the portable transformer. The iron core of the transformer accepts the cold rolled silicon steel sheet. The iron yoke is fastened with steel or steel plate, and the screw is fastened through the screw. The products are divided into open and protective types according to the layout, the protective type is the acceptance steel plate processing into the case shell, the transformer inside the case shell, the box shell outside has the revenue and expenditure line hole, in order to place the power line. It can be used to increase the voltmeter, ammeter, thermostat, steering wheel and so on in order to move.
Several problems that should be paid attention to in the use of power distribution transformers:
1. When choosing power distribution transformer, the capacity selection should be appropriate in addition to the full consideration of its performance. The capacity choice is too big, except the price of purchase is high, one-time investment is big, in the operation process, inherent no-load loss is also big. The capacity selection is too small, and the load loss is often high in addition to the requirement for electricity.
2. Reasonable determination of the number of platforms adopted, which is generally considered in terms of safety and economy; There is a large number of first-level loads or a secondary load, but from a security point of view, a large and small number of multiple combinations can be considered if the load is large and the interval is long. When the reliability of power supply is high, the backup transformer should be considered. There is also the influence of various aspects such as the site. When power and lighting share a transformer, which seriously affects the life of the bulb or the lighting quality, special lighting transformer should be set.
3, transformer economic operation, it is a complex systemic subject, transformer no-load loss is equal to the load loss in the operation, the transformer has the highest efficiency, this is hard to reach in practice; Economic operation curve and optimal economic operation curve should be considered in transformer operation
The installation conditions of the transformer are introduced here.
1. The altitude is no more than 1000 meters. If the location of the installation is above this, you must use a special custom device.
2. The ambient temperature of the installation of the equipment should not be greater than 40 degrees, the maximum monthly average is not greater than 30 degrees, and the minimum temperature must not be less than 5 degrees below zero.
3. Air relative humidity is not greater than 95%.
4. The ambient air should not contain the gas that corrodes the metal and damages the insulation, and the equipment can not be eroded by rainwater, which will affect the performance and service life of the product.
5. The installation site should not have no violent vibration and shock.
A number of excellent research enterprises in China have jointly developed the curving and winding equipment of the coil core