How should dry type transformers be selected?

Choose a dry type transformer according to the nature of the load:

1. When there is a large number of primary or secondary loads, two or more transformers should be installed. When any transformer is disconnected, the capacity of the remaining transformers can meet the power consumption of primary and secondary loads. Primary and secondary loads should be Be as concentrated as possible, not too scattered.

2. When the seasonal load capacity is large, a special transformer should be installed.

3. When the concentrated load is large, please set up a special transformer.

4. When the lighting load is heavy, when the power and lighting use a shared transformer, and have a significant impact on the lighting quality and lamp life, a special transformer for lighting can be installed. In general, power and lighting are used together. the transformer

Select the dry type transformer according to the application environment:

1. Under all normal material standards, oil-immersed transformers or dry type transformers can be used, such as independent or attached substations in factories and mining enterprises, agriculture and animal husbandry, and independent substations in residential quarters.

2. In multi-storey or high-rise main buildings, non-combustible or flame-retardant transformers should be selected.

3. In a place with a lot of dust or a place where corrosive gas has a great influence on the safe operation of the transformer, choose a closed transformer. 4. High and low power distribution devices without flammable oil and non-oil-immersed power distribution Transformer, can be set together, then the transformer should have a casing.

The capacity of the distribution transformer should be integrated with the facility capacity of various electrical equipment to obtain the calculated load (generally excluding fire load), and the apparent capacity after compensation is the basis for selecting the capacity and number of transformers. Generally, the load rate of the transformer is 85% This method is relatively simple and can be used for estimating capacity.