Modern industrial enterprises widely use electricity as their energy source, which is directly converted from hydroelectric power stations and generators that generate electricity. The electricity generated by the generator will be transmitted according to different voltage levels based on the transmission distance. There needs to be a device specifically designed to change the voltage, which is called a "control transformer"

After more than 10 years of development, the technology for controlling transformers has become mature. It is the main electrical component in equipment such as CNC lathes, milling machines, and machining centers, with characteristics such as small volume and large capacity. Widely used in various machine tools, such as lathes, milling machines, drilling machines, etc., it is also widely used in industries such as metallurgy and chemical engineering.

Control transformers are indispensable transformer power sources in mechanical equipment such as machine tools. Its main function is to serve as a power source for the electrical circuit control part and to control lighting and indicator lights. Its reliable operation is related to the stable operation of mechanical equipment. Once damaged, it can cause power outages and affect normal production.
The control transformer controls the electrical circuit by changing the voltage, and its main functions include isolation, voltage change, and anti-interference. In principle, it is no different from ordinary transformers and works by changing the ratio of coil turns to increase/decrease voltage.

In these cases, it is possible to consider using a control transformer as the power supply:

• 1.The working voltage of the power supply is greater than 220V, such as 380V when connected to industrial electricity
• 2.The other voltages of the power supply are not suitable for the control purpose, such as requiring the control voltage to be different from the power supply voltage
• 3.Power supply without neutral wire
• 4.It is necessary to use a completely insulated control power supply that can provide isolation
• 5.When the ground voltage on the incoming and outgoing lines of the control circuit is half of the voltage between the phase lines
• 6.In industrial power grids with high short-circuit currents, in order to reduce short-circuit capacity
• 7.In the power grid where control circuits need to be connected between two phase lines

Especially in networks with star point displacement, different control voltages may occur when the phase and neutral lines are connected

LINKWELL - JBK5 series machine tool control transformer

The JBK5 series transformer is composed of two main parts: silicon steel sheet and coil combination; The primary and secondary windings are separated, and the transformer has dedicated grounding wire screws and markings. Based on the JBK3 series machine tool control transformer, optimization is carried out and advanced wiring methods are adopted to redesign the terminals, improving the protection level and preventing sudden electric shock. Using IT cold pressed wiring terminals can increase the density of wiring. The connection between the silicon steel sheets of the transformer and the silicon steel sheets, as well as the connection between the silicon steel sheets and the bottom plate, all adopt argon arc welding technology to form a whole, simple and clear.