The water pump control protector is an electrical control protector installed after the power supply is connected to the deep well pump motor for driving and protecting the motor. Different controller has a variety of different protection features.

• Overload Protection

• Overcurrent Protection

• Overvoltage and undervoltage protection

• Overheat Protection

• Phase Loss Protection

• Water Level Control

Common Causes of Motor Burning

During the use and operation of the well submersible electric pump, because of the different use environment or improper use, various problems will cause the motor to burn out.

In order to ensure the safe operation of the well submersible pump and prolong the life of the well submersible pump, it is necessary to install an effective electric pump control protector to avoid unnecessary losses such as burning the motor.

Case Share

Overview of customer issues:

1. The customer reported that the well pump burned in

2. Initial teleconferencing failed to diagnose the underlying problem

3. The customer subjectively believes that it is caused by product quality problems

Customer A problem analysis:

· The setting value of the current protector and thermostat is too low, which causes the motor to start and stop frequently, which does not meet the actual use requirements

· The user did not choose the appropriate well submersible pump according to his actual situation

Detailed guidance and solutions:

· Commissioning and resetting of the optimal efficiency parameters of the electric pump

· Guidance on the correct use of well pumps and pump selection methods

Customer B problem analysis:

· After the inverter exceeds the effective distance, it will produce high-frequency harmonic interference, resulting in damage to the cable of the burned motor

· Broken cables

Detailed guidance and solutions:

· Adding an output reactor between the inverter and the well pump solves the problem of burning the motor

· Maintain the cables

Requirements for the use of submersible pump controllers

M28B M28C series electric pump protection controller

M28B M28C series electric pump protection controller is suitable for water supply and drainage equipment powered by three-phase motor from 0.5HP to 10HP direct start, which can realize the automatic control of the system and provide comprehensive and reliable comprehensive protection for the motor and water pump.

PF11 series intelligent electric pump protection controller

PF11 series electric pump protection controller is suitable for water supply and drainage equipment powered by three-phase motor with direct start from 15HP to 40HP. It has the advantages of small size, full function and high reliability, and it has a variety of built-in protection functions, such as dry rotation protection, overcurrent protection, under-voltage protection, over-voltage protection, over-temperature protection, and off-phase protection, which effectively avoids the damage of motors and pumps due to abnormal power supply or sudden load changes.

M88 series step-down start controller

M88 series is a controller specially designed for the step-down start of high-power well submersible electric pump. It is suitable for high-power three-phase well submersible electric pump in the range of 25HP to 200HP, which can effectively solve the impact of excessive instantaneous current on the motor and the impact on the large fluctuation of the power grid caused by the direct start of the high-power submersible electric pump, so as to realize the smooth start and normal operation of the well submersible electric pump.

In order to ensure the safe operation and prolong the service life of the submersible electric pumps for wells, we require all users to install effective pump control protectors to avoid unnecessary losses such as burning motors, and to avoid misunderstandings between dealers and users about the quality of our products.