Submersible pumps are widely used in different applications, such as water supply systems, irrigation systems, industrial and municipal applications, and more. These pumps are designed to work underwater, which makes them suitable for different environments, including wells, boreholes, and tanks. In this article, we’ll discuss the wiring diagram for a 3-phase submersible pump starter.
Understanding 3-Phase Submersible Pump Starter Wiring Diagram
Before we delve into the details of the wiring diagram, it’s essential to understand the basics of the 3-phase submersible pump starter. A submersible pump starter is an electrical component that controls and protects the submersible pump from various electrical faults. It comprises different elements, including a contactor, overload relay, capacitors, and more.
The 3-phase submersible pump starter wiring diagram is based on the principle of three-phase electricity, which is commonly used in industrial and commercial applications. Three-phase electricity involves three conductors carrying alternating current, which is out of phase with each other by 120 degrees.
The submersible pump starter wiring diagram is divided into three parts, the power wiring, control wiring, and protection wiring. The power wiring involves the connection of the three phases, neutral and earth wires, and the motor. The control wiring comprises the connection of the contactor, overload relay, and start-stop push buttons. The protection wiring involves the connection of the overheating and overloading protection elements.
In the next section, we’ll discuss the power wiring in detail.
Power Wiring
The power wiring involves the connection of the three phases, neutral, and earth wires to the motor. The wiring diagram for the power wiring is as follows:
| Terminals | Color Code | Description |
|---|---|---|
| R | Red | Phase R |
| Y | Yellow | Phase Y |
| B | Blue | Phase B |
| N | Black | Neutral |
| E | Green/Yellow | Earth |
The wires are connected to the motor through the submersible cable. The red wire is connected to the first phase of the motor, the yellow wire is connected to the second phase, and the blue wire is connected to the third phase. The black wire is connected to the neutral, and the green/yellow wire is connected to the earth.
The power wiring is designed to ensure the proper functioning of the motor and the submersible pump starter. However, it’s essential to ensure the correct connections to avoid electrical faults that may damage the motor or other components.
FAQ
Q: What is a submersible pump starter?
A: A submersible pump starter is an electrical component that controls and protects the submersible pump from various electrical faults.
Q: What is three-phase electricity?
A: Three-phase electricity involves three conductors carrying alternating current, which is out of phase with each other by 120 degrees.
Q: What is the power wiring?
A: The power wiring involves the connection of the three phases, neutral and earth wires, and the motor.
Control Wiring
The control wiring involves the connection of the contactor, overload relay, and start-stop push buttons. The wiring diagram for the control wiring is as follows:
| Terminals | Description |
|---|---|
| LA1 | Start Button |
| LA2 | Stop Button |
| A1 | Contactor Coil |
| A2 | Contactor Coil |
| NC | Normally Closed |
| NO | Normally Open |
| OL1 | Overload Relay |
| OL2 | Overload Relay |
The wires are connected to the contactor and the overload relay through the control panel. The start button is connected to the LA1 terminal of the contactor, while the stop button is connected to the LA2 terminal of the contactor. The contactor coil is connected to the A1 and A2 terminals of the contactor, while the normally closed (NC) and normally open (NO) terminals of the overload relay are connected to the contactor coil and the motor, respectively.
The control wiring is designed to provide the necessary signals to control the operation of the motor and the submersible pump. However, it’s essential to ensure the correct connections to avoid electrical faults that may damage the motor or other components.
FAQ
Q: What is the control wiring?
A: The control wiring involves the connection of the contactor, overload relay, and start-stop push buttons.
Q: What is a contactor?
A: A contactor is an electrical component that connects and disconnects the power supply to the motor.
Q: What is an overload relay?
A: An overload relay is an electrical component that protects the motor from overheating and overloading.
Protection Wiring
The protection wiring involves the connection of the overheating and overloading protection elements. The wiring diagram for the protection wiring is as follows:
| Terminals | Description |
|---|---|
| 1PH | Single-Phase Sensor |
| 3PH | Three-Phase Sensor |
| +1PH | Single-Phase Trip |
| +3PH | Three-Phase Trip |
| C | Common |
The wires are connected to the overheating and overloading protection elements through the control panel. The single-phase sensor is connected to the 1PH terminal, while the three-phase sensor is connected to the 3PH terminal. The single-phase trip is connected to the +1PH terminal, while the three-phase trip is connected to the +3PH terminal. The common wire is connected to the C terminal.
The protection wiring is designed to protect the motor from electrical faults such as overheating and overloading. However, it’s essential to ensure the correct connections to avoid false alarms that may interrupt the operation of the motor and the submersible pump starter.
FAQ
Q: What is the protection wiring?
A: The protection wiring involves the connection of the overheating and overloading protection elements.
Q: What is overheating protection?
A: Overheating protection is an electrical element that protects the motor from overheating.
Q: What is overloading protection?
A: Overloading protection is an electrical element that protects the motor from overloading.
Conclusion
In conclusion, the 3-phase submersible pump starter wiring diagram is an important component of the submersible pump system. It ensures the proper functioning and protection of the motor and other components. Understanding the wiring diagram is essential in ensuring the correct connections and avoiding electrical faults that may damage the system.
