Installation and debugging process of dry-type transformer

Installation of dry-type transformer

1. Preliminary preparation

Before installing and commissioning dry-type transformers, the following preparations need to be made:

Determine the installation site: Dry-type transformers should be placed in a dry, ventilated place without corrosive gases and flammable substances.

Determine the installation location: The installation location should meet the installation requirements of the transformer. And the convenience of transportation and maintenance should be taken into account.

Prepare necessary tools: Such as lifting equipment, wrenches, screwdrivers, etc.

Determine the installation direction: The installation direction of the transformer should be determined according to the transformer marking.

2. Installation

Installation foundation: The installation foundation of the transformer should be solid, flat and free from settlement. The size, material and strength of the installation foundation need to be determined according to the weight and size of the transformer.

Installation of transformer: Place the dry-type transformer on the installation foundation, use a special crane or hoist to lift the transformer off the ground, and then place it on the foundation. Pay attention to protecting the insulation cover and connection cabinet during the placement of the transformer.

3. Connection

Connect the main wiring: Before connecting the main wiring, check the insulation status inside the connection cabinet and whether the metal parts are tight. Then connect the main wiring according to the wiring diagram. Pay attention to the correctness and tightness of the wiring during the connection process.

Connect the winding: Before connecting the winding, check whether the winding terminal is clean and undamaged. And then connect the winding according to the wiring diagram. Pay attention to the correctness and tightness of the wiring during the connection process.

dry-type transformer

Debugging before transformer operation

· Check the transformer ratio and connection group, measure the DC resistance of the high and low voltage windings, and compare the results with the factory test data provided by the manufacturer.

· Check the insulation resistance between the coils and the coil to the ground. If the insulation resistance is significantly lower than the factory measurement data of the equipment, it indicates that the transformer is damp. When the insulation resistance is lower than 1000Ω/V (operating voltage), the transformer must be dried.

· The test voltage of the withstand voltage test should comply with the regulations. When doing the low voltage withstand voltage test, the temperature sensor TP100 should be taken out. After the test, the sensor should be returned in time.

· When the transformer is equipped with a fan, the fan should be powered on and ensure that it operates normally.

Test run: After the transformer has been carefully inspected before being put into operation, it can be powered on for test run. During the test run, special attention must be paid to checking the following points. Check for abnormal sounds, noises and vibrations. Check for abnormal smells such as burnt odors. Check for discoloration due to local overheating. Check for good ventilation.

Precautions

· During the entire installation and debugging process, the safety operating procedures should be strictly followed to ensure the safety of personnel and equipment.

· All operations should be carried out under the guidance of professionals to avoid equipment damage or casualties caused by misoperation.

· After the installation is completed, regular maintenance and inspection should be carried out to ensure the long-term stable operation of the equipment. At the same time, pay attention to keeping operating environment of the transformer clean and dry to avoid moisture and pollution.