Key Points For Selecting Dry-type Transformers

1. Choose Dry Type Transformer according to load conditions:

1. When there are a large number of primary or secondary loads, it is advisable to install two or more transformers. When any of the transformers is disconnected, the capacity of the remaining transformers can meet the power consumption of the primary and secondary loads. The primary and secondary loads should be concentrated as much as possible and should not be too dispersed.

2. When the seasonal load capacity is large, it is advisable to install a dedicated transformer. Such as the air conditioning refrigeration load and heating electric heat load in large civil S4270D27-29 27 2005.7.29,3:24AM buildings.

3. When the concentrated load is large, it is advisable to install a dedicated transformer. Such as large heating equipment, large X-ray machines, arc furnaces, etc.

4. When the lighting load is large or the use of a shared transformer for power and lighting seriously affects the lighting quality and bulb life, a dedicated lighting transformer can be installed.

2. Select transformers according to the use environment:

1. Under normal medium conditions, oil-immersed transformers or dry-type transformers can be selected according to the situation, such as industrial and mining enterprises, independent or attached substations in agriculture, independent substations in residential areas, etc. The available transformers are S8, S9, S10, SC (B) 9, SC (B) 10, etc.

2. In multi-story or high-rise main buildings, non-flammable or flame-retardant transformers should be selected, such as SC (B) 9, SC (B) 10, SCZ (B) 9, SCZ (B) 10, etc.

3. In places where dust or corrosive gases seriously affect the safe operation of transformers, enclosed or sealed transformers should be selected, such as BS 9, S9 -, S10-, SH12-M, etc.

4. High and low distribution devices without flammable oil and non-oil-immersed distribution transformers can be installed in the same room. At this time, the transformer should have an IP2X protective casing for safety.