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1. The control transformer controls the electrical equipment in the required application area according to the voltage and current required by the electrical equipment. The difference between the control transformer and the general transformer depends on; the general transformer mainly changes the voltage, and the control transformer transmits the data signal.
2. Isolation transformer refers to the transformer with electrical isolation between input winding and output winding. Isolation transformers are used to prevent accidental touching of power lines at the same time. The protection of the transformer is to isolate the current amount of the primary and secondary winding electromagnetic coils. Isolation transformers generally refer to 1:1 transformers (not all). Because the secondary electromagnetic coil is not connected to the earth, there is no phase difference between the secondary line and the earth (that is, there is no zero line and live line, none of which can have closed-loop control of the body). Commonly used in maintenance power and security applications.
The difference between the two depends on the main purpose and function. The control transformer is used as the distribution power supply for the power circuit of the electrical control system. The purpose is to consider the voltage requirements of different electrical components. Its function is dedicated to power distribution. The purpose of the isolation transformer is to transmit voltage data signals of different voltages or requirements on both sides of the transformer. After isolating the transformer, the different voltages on both sides of the transformer are not easy to influence each other. Its function is to prevent electrical equipment from being affected by the harmonic current of the power supply, and in fact it is a filter with poor characteristics.
For example, in the imported safe driving power supply circuit, all automotive relays, AC contactors and other electrical equipment are all AC220V. When the power is keyed in, three-phase four-wire. A live neutral can be applied immediately and create a control loop with the neutral. As everyone knows, the safe driver has an operating handle, and the electrical equipment interior designer uses the secondary coil of the isolation transformer as the power supply for the power circuit of the electrical control system. Because the secondary coil power supply circuit does not have a grounding device end, even if everyone knows the operating voltage of AC220V, there will be no electric shock accident. Therefore, the transformer is not only a control transformer, but also an isolation transformer, as well as a connection between the isolation transformer and the control transformer.
Isolation Transformer Control Transformer Control Transformer.