Tag: transformer

Control transformer is a small dry-type transformer, which is mainly used to change the voltage of AC power. It is wound by an iron core and a coil. It can change not only the voltage of the alternating current, but also the impedance. When the design power is not exceeded, the current can also be changed. In different environments, the transformer also has different applications. Generally, it is used as a control lighting and indicator light source for electrical appliances in machine tools and mechanical equipment.

For newcomers who are new to transformer knowledge, there are always some confusing knowledge points in a large number of basic concepts. Transformer on load operation and transformer no-load operation are included. This article will introduce load and no-load operation of a transformer, and explain the difference between the two.

Q: What are the features of a toroidal isolation transformer?
1. Toroidal isolation transformer is a transformer with input and output windings completely independent and isolated from each other with an insulation layer in the middle.
2. Toroidal isolation transformer is mainly used in places to avoid electric shock and protect human safety.
3. 220V to 220V toroidal isolation transformer is mainly used to isolate the earth.
4. Toroidal isolation transformers are used in most precision instruments, medical equipment, and mines.

The impedance of N-wire is at the milliohm level, and its unbalanced voltage of load neutral point is the voltage drop of N-wire current on N-wire impedance with small value. Even if the three-phase load is seriously unbalanced, it is enough to clamp the neutral point potential of load on the neutral point potential of power supply. While the ground resistance is at the ohm level, which is several hundred times larger than the N-wire impedance, so it is impossible to clamp the neutral point potential of load on the neutral point potential of power supply.

Step up or step down transformer is an important part of power grid operation, it's of great significance to the stable operation of the power grid. It meets different power demands by adjusting current and voltage. Once a transformer fails, it will cause great losses to the whole power grid, and further affects the normal operation of industrial production. In order to ensure the efficient operation of transformers, it is necessary to carry out a comprehensive management of the whole process of installation and application, thus reducing potential safety hazards and improving operational efficiency.

Q: What is a transformer?
A: A transformer is a device that step up or step down the voltage in an AC circuit. It converts the voltage of any value into the voltage value we need at the same frequency to meet the requirements for the delivery, distribution and use of electrical energy. For example, the electricity generated by the power plant has a low voltage level, and the voltage must be raised to be transported to a remote power consumption area. And the power supply area must be turned down to a suitable voltage level to supply power equipment and daily power equipment.

How does a transformer work? Transformers mainly applies electromagnetic induction principle to work, the working principle details are as follows: When the primary side of the transformer is applied with the alternating voltage U1 and the current flowing through the primary winding is I1, then the current will generate alternating magnetic flux in the iron core to generate electromagnetic connections between the primary winding and the secondary windings.

Three-phase imbalance means that inconsistent amplitude of three-phase current (or voltage) in electrical power system and that amplitude difference surpasses the specified range.
Unbalanced current of transformer refers to current difference of three-phase transformer windings. The current difference is mainly caused by different three-phase load. Asymmetry of load gives rise to asymmetry of three-phase current which flow through transformer. And current asymmetry causes asymmetry of three-phase impedance drop of transformer, thus three-phase voltage of secondary side is asymmetric, which will do harm to transformer and electric equipment.

Why buy an isolation transformer from ATO?
ATO isolation transformers have the special advantages as follows:

1. High quality in lower price, manufactured direct sale.
2. They can work as step-up transformers or step-down transformers and voltage less than 1000V.
3. Isolation transformers with a NEMA 3R enclosure, suitable for both indoor and outdoor applications.
4. Voltage convert: Single phase to single phase, three phase to three phase, or three phase to single phase.
5. Transformers have a minimum 2 year warranty, long life span and high efficiency.