Dry-type transformers, also known as cast resin transformers, have become increasingly popular in recent years due to their environmentally friendly and maintenance-free characteristics. Proper installation and commissioning are crucial to ensure the safe and reliable operation of dry-type transformers. This article will provide an overview of the key considerations for the installation and commissioning of dry-type transformers.

Installation

Before the installation of the transformer, it is essential to ensure that the foundation is level and strong enough to support the weight of the transformer. The installation location should be well ventilated and away from any sources of moisture, dust, or corrosive gases that could damage the transformer. The clearance around the transformer should also be sufficient to allow for adequate air circulation and maintenance access.

Connection

Proper connection of the transformer is crucial to ensure its safe and reliable operation. All electrical connections should be made according to the manufacturer's instructions and local electrical codes. The transformer should be connected to the electrical system using appropriate cables and busbars that are rated for the transformer's voltage and current capacity. It is also essential to ensure that the connections are tight and properly insulated to prevent any electrical faults.

Commissioning

Commissioning of the transformer involves a series of tests and checks to verify that it is operating correctly and safely. The commissioning process should include the following:

Visual inspection of the transformer for any signs of damage or defects.

Measurement of the insulation resistance to verify that it meets the specified values.

Verification of the voltage ratio and phase sequence of the transformer.

Testing of the transformer's protective devices, such as overcurrent and overtemperature relays.

Measurement of the transformer's no-load and load losses to verify that they are within the specified limits.

Maintenance

Regular maintenance is essential to ensure the long-term reliability and safety of the transformer. The maintenance tasks may include cleaning the transformer's cooling system, inspecting the electrical connections for signs of damage or corrosion, and checking the insulation resistance. It is also essential to follow the manufacturer's recommendations for periodic testing and maintenance.

In summary, the installation and commissioning of dry-type transformers require careful planning and execution to ensure their safe and reliable operation. Proper installation, connection, and commissioning, as well as regular maintenance, are crucial to extending the lifespan of the transformer and avoiding any electrical faults or accidents.

LuShan, est. 1975,  is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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