Control transformers are used to provide voltage to control circuits in various electrical equipment. The 480 120 control transformer is a common type of transformer used for control circuits. In this article, we will discuss the wiring diagram of the 480 120 control transformer in detail.
What is a Control Transformer?
A control transformer is a type of transformer that is used to provide power to the control circuits of electrical equipment. It is different from a power transformer, which is used to provide power to the main circuit of the equipment. Control transformers typically have a lower rated voltage and power output than power transformers, but they are designed to provide a more stable output voltage for control circuits.
Control transformers are used in a wide range of electrical equipment, including motor control centers, switchgear, and control panels. They are typically located close to the equipment they are supplying power to.
Wiring Diagram for 480 120 Control Transformer
The wiring diagram for a 480 120 control transformer is relatively simple. It consists of two primary terminals and two secondary terminals. The primary terminals are connected to the high-voltage power source, while the secondary terminals are connected to the control circuit.
The wiring diagram for a 480 120 control transformer is as follows:
| Terminal | Wire Color | Function |
|---|---|---|
| H1 | Black | Primary High Voltage Terminal |
| H2 | Orange | Primary High Voltage Terminal |
| X1 | Red | Secondary Low Voltage Terminal |
| X2 | Blue | Secondary Low Voltage Terminal |
The H1 and H2 terminals are connected to the high-voltage power source, typically 480 volts. The X1 and X2 terminals are connected to the control circuit, typically 120 volts. The control circuit is then connected to the equipment being controlled.
FAQs
What is the purpose of a control transformer?
A control transformer is used to provide power to the control circuits of electrical equipment. It is designed to provide a stable output voltage for control circuits, which is typically lower than the main circuit voltage.
What is the difference between a control transformer and a power transformer?
A control transformer is designed to provide power to the control circuits of electrical equipment, while a power transformer is designed to provide power to the main circuit of the equipment. Control transformers typically have a lower rated voltage and power output than power transformers.
What is the voltage rating of a 480 120 control transformer?
A 480 120 control transformer has a primary voltage rating of 480 volts and a secondary voltage rating of 120 volts.
Where is a control transformer typically located?
A control transformer is typically located close to the equipment it is supplying power to, such as a motor control center or control panel.
What is the function of the H1 and H2 terminals on a control transformer?
The H1 and H2 terminals on a control transformer are connected to the high-voltage power source, typically 480 volts.
What is the function of the X1 and X2 terminals on a control transformer?
The X1 and X2 terminals on a control transformer are connected to the control circuit, typically 120 volts. The control circuit is then connected to the equipment being controlled.
Conclusion
The wiring diagram for a 480 120 control transformer is relatively simple. It consists of two primary terminals and two secondary terminals. The primary terminals are connected to the high-voltage power source, while the secondary terminals are connected to the control circuit. Control transformers are used to provide power to the control circuits of electrical equipment and are typically located close to the equipment they are supplying power to.
