How To Choose A Suitable Transformer Oil Cooler?

How to Choose a Suitable Transformer Oil Cooler?

Selection of suitable transformer oil cooler can be considered from the following aspects:

Transformer Parameters

Capacity and load: Know the capacity and expected load of the transformer. Larger capacity and high load transformers usually require more efficient coolers to ensure that the oil temperature is within safe limits. Calculate the required cooling capacity based on the power and load characteristics of the transformer to determine the appropriate cooler specifications.

Voltage class: Transformers of different voltage classes may have different insulation requirements for coolers. Ensure that the selected cooler can meet the voltage level requirements of the transformer to ensure safe operation.

Cooling Method

Water cooling:

Advantages: high cooling efficiency, can quickly reduce the temperature of transformer oil. Applicable to large transformers and the cooling effect of the higher requirements of the occasion.

Disadvantages: need water source, installation and maintenance is relatively complex, there is a risk of water leakage. At the same time, water quality problems may lead to internal scaling and corrosion of the cooler.

Air cooling:

Advantages: simple structure, easy installation and maintenance, no water source required. Suitable for small transformers or environmental conditions do not allow the use of water cooling occasions.

Disadvantages: cooling efficiency is relatively low, affected by the ambient temperature and air circulation.

Cooler Performance Parameters

Heat dissipation area: the larger the heat dissipation area, the stronger the cooling capacity of the cooler. According to the transformer's heat and environmental conditions, choose the cooler with enough heat dissipation area.

Cooling medium flow: ensure that the cooler can provide sufficient cooling medium flow to meet the heat dissipation needs of the transformer. Too much or too little flow may affect the cooling effect.

Pressure loss: The cooler will generate a certain pressure loss during operation. Select a cooler with less pressure loss to reduce the impact on the transformer cooling system.

Environmental Adaptability

Ambient temperature and humidity: consider the ambient temperature and humidity conditions of the transformer installation site. If the ambient temperature is high or humidity is large, you need to choose the cooler with stronger heat dissipation ability and moisture resistance.

Installation space: According to the installation space and layout of the transformer, select the appropriate size and shape of the cooler. Ensure that the cooler can be installed in the designated location, and will not affect the normal operation and maintenance of the transformer.

Protection level: If the cooler is installed outdoors or in a harsh environment, it is necessary to choose a product with a high level of protection to prevent dust, moisture and other impurities from entering the interior of the cooler, affecting its performance and life.