The high voltage cabinet of the box-type transformer cannot automatically store energy

Does a transformer provide a variable output?

Some transformers even provide a variable output by allowing connection to be made at different points on the secondary coil. A step-up transformer is one that increases voltage, whereas a step-down transformer decreases voltage. Assuming, as we have, that resistance is negligible, the electrical power output of a transformer equals its input.

Why are transformers used in power distribution systems?

Transformers are also used at several points in the power distribution systems, such as illustrated in Figure 23.26. Power is sent long distances at high voltages, because less current is required for a given amount of power, and this means less line loss, as was discussed previously.

Are box-type transformer substations safe?

For CLOU safety is a paramount concern in electrical systems, and box-type transformer substations are no exception. These substations incorporate comprehensive safety features to protect personnel, equipment, and the surrounding environment.

What happens if a transformer is overloaded?

When a transformer’s primary winding is overloaded from excessive applied voltage, the core flux may reach saturation levels during peak moments of the AC sinewave cycle. If this happens, the voltage induced in the secondary winding will no longer match the wave-shape as the voltage powering the primary coil.

How reliable are busbars in a high voltage substation?

Busbars are the part of the substation where all the power is concentrated from the incoming feeders, and distributed to the outgoing feeders. That means that the reliability of any high voltage substation depends on the reliability of the busbars present in the power system. An outage of any busbar can have dramatic effects on the power system.

What is the output voltage of a transformer?

The output voltage of a transformer can be less than, greater than, or equal to the input voltage, depending on the ratio of the number of loops in their coils. Some transformers even provide a variable output by allowing connection to be made at different points on the secondary coil.