Submersible Motor Control Box | motor control box connection

Submersible Motor Control Box Wiring:

This Diagram Shows Submersible Motors are Used in Offshore Oilfields And are Mostly Closed-End Three-Phase Induction Motors Installed in a Steel Tube That Is Filled With Transformer Oil, And Whose Diameter Ranges From 1 to 0. A Well Pump Control Box is Essential in That It Protects Submersible Good Pumps From Too High or Low Voltage. Clogged Well Screens. Malfunctioning Motors and Pumps.

Diagram of Submersible Motor Control Box wiring:

Fig 1: Submersible Motor Control Box Wiring

Components Need for this Project:

You can get the components from any of the sites below:

DP MCB [See Buy Click Amazon]
Water Heater Switch [See Buy Click Amazon]
Overload Switch [See Buy Click Amazon]
Capacitor [See Buy Click Amazon]
Submersible Pump [See Buy Click Amazon]

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Components used to make the Submersible Motor Control Box Wiring:

01. DP MCB

Fig 2: DP MCB

Double pole MCB can control two wires. This circuit breaker is generally used in single-phase electric lines. Double pole MCB circuit breaker input has two wires supply two wires and an output. In a single-phase line, A double-pole MCB circuit breaker is used to give good production. This circuit breaker is provided through phase and neutral circuit breaker, it is very safe. This circuit breaker is preferred for home appliances. A DP MCB usually trips for 2 reasons 1. Overload 2. Short circuit.

02. Water Heater Switch

Fig 3: Water Heater Switch

A Double Pole (or DP) Switch is a Switch That Controls 2 Circuits at the Same Time. They are Essentially 2 switches in one. In terms of Residential Switching, this Normally Means it Switches the live and Neutral at the same time. Double pole (DP) Switches are often used for Appliances that Require Heavy loads. Double pole (DP) switches can also be used as a Safety Shut-off for a Residential appliance. A DP Switch has two Connections to 2 Separate Circuits.

03. Overload Switch

Fig 4: Overload Switch

Overload relays are often used to protect the motor from excessive current flow. Overload relays are used to protect the motor from overheating. Besides some specific faults such as phase to phase, phase to ground, etc. overload relay provides protection to the motor. A thermal overload relay works on the principle of bimetallic strip electro-thermal characteristics. When the bimetallic heats up, the trip function in the overload relay turns on and disconnects the power supply to the contactor coil, thus tripping the overload relay and breaking the motor current and saving the motor.

04. Capacitor

Fig 5: Capacitor

A Run Capacitor is Used in Single-Phase Motors to Maintain a Running Torque on an Auxiliary Coil While The Motor is Toaded. These Capacitors Are Considered Continuous Duty While The Motor is Powered And Will Remain in The Circuit While The Starts Capacitor Drops out. The Run Capacitor, Also Sometimes Called an “A/C Capacitor,” Uses Its Stored Energy to Turn or Run The fan Motor. Without The Run Capacitor, The Fan Cannot Turn. Run Capacitors Are Also Rated by Voltage Classification. The Voltage Classifications are 370V and 440V.

05. Submersible Pump

Fig 6: Submersible Pump

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Frequently Asked Questions

How does a submersible pump control box work?

Protects submersible pumps from low and high voltage, a drop in water level, low yield wells, clogged well screens, malfunctioning pumps and motors, and rapid cycling. Pump control boxes usually have microprocessors that monitor power supply -line voltage and pump motor power draw.

Does a 3-wire submersible pump need a control box?

While 2-wire well pumps do not require a pump control box, 3-wire submersible well pumps do. Control boxes contain the starting circuit diagram for well pumps. Control boxes are mounted outside near the well.

How is the submersible pump connected?

Submersible Motors are supplied with a three-core PVC insulated flat cable of length 3 meters. The free end of the three-core cable of the motor needs to be connected to the supply cable from the control panel. As this joint was always nearly submerged in water the joint needs to be waterproof.

What are the 3 wires on a submersible pump?

In a three-wire well pump configuration, the motor is connected by a black, red, yellow, and green (ground) wire. three-wire pumps utilize a separate control box outside the pump that houses the important starting components, which are usually mounted on a nearby wall above the ground.

Does a two wire submersible pump need a control box?

3 wires with a control box start easier with a generator, have more starting torque, have a cap you can get to if needed, and need 4 wires from the control box to the motor. 2 wires are easier to wire, don't need a control box, and requires 3 wires from the pressure switch to the motor.