5kw Electric Motor
Manufacturer
In China

5kW Electric Motor FAQ Guide

Introduction

A 5kW electric motor is widely used for multiple purposes around the globe. It is used in pumps, fans, conveyors and to drive many industrial machineries. The buying of this electric motor is a crucial step and an important factor to decide your project success, this is why we bring you this guide to help you in this regard.

This FAQs guide will help you understand the 5kW electric motor functionalities and criticalities. We bring you this guide to help you make a better decision about buying a 5kW electric for your applications. So without further ado, let’s dive in and find out what you are looking for.

1. What is a 5-kilowatt electric motor?

A 5kW electric motor that converts electrical energy into mechanical energy and helps in many different applications from domestic to industrial. It is a powerful machine and compatible with single-phase and three-phase supplies. Its use in many applications makes it a good choice for domestic, commercial, and industrial settings.  Its impressive specification and reliability can solve many problems by working in a different environment and for multiple functions.

2. What are the specifications of the 5kw electric motor?

• Voltage: 72 VOLTS
• Output: 5kW (6.8 hp)
• Frequency: 50 Hz
• Phase: 3 phase
• Torque: 14NM – 45NM
• Current: 150 amps
• Rated Speed: 3000 rpm
• Rotor Structure: Squirrel Cage
• Square Flange Size: 180 mm
• Duty: Continuous
• Enclosure: IP65
• Weight: 18.6 kg

3. How To Test A 5kw Electric Motor?

Figure 1- Motor Testing

The testing of the 5kW electric motor is important to improve its readiness and uptime and it also helps reduce the overall cost. The testing consists of particular maintenance and management tools to help identify any issue before it gets bigger and causes any potential damage. By dedicating time to thorough testing of the motors on a regular and planned basis the issues can be prevented and resolved with minimum cost and disruption. Below mentioned are some of the testing techniques that you can follow.

Hipot Test:

This test is performed to determine the efficacy and the cable insulation. It detects the weakness and failure within the cable and wires insulations.  The high potential (hipot) also known as dielectric strength testing, is advised to perform after conducting an initial visual inspection.

Using AC or DC voltage, the high potential test involves applying the current between the frame and the electrical circuit. It is run by the continuous 1000V, 50-60 Hz if you are testing the strength of the new windings. To avoid the overstressing of the insulation, a high potential test should be conducted at 85%. If the insulations in reconditioned, the test voltage should be 60% to avoid the overloading of the material.

Surge Test:

To check the burnout and for the prediction of future motor failure, the surge test is done. It allows identifying the shortened motor conductor’s turns and deteriorating conductor insulations, these both are the first sign of the electrical breakdown of the motor. Chemical deposits on the motor, routine startup movements, and rigorous use can lead to wear of the insulation of the motor winding.

Merger Test:

This test evaluates critical insulation performance. It allows reliable, periodic testing of the insulation performance of the tools, motors, appliances, capacitors, power distribution subsystem, and other electrical equipment and high-performing wirings.

The merger test applies high voltage to the system to measure the leakage current through the insulation. It can be tested periodically to check the motor’s insulation with time. This can indicate wear and tear damage and you can address the problem before it causes serious damage. Keep this in mind this test needs to be operated carefully to prevent any operator injury or equipment damage.

There is also other type of test that you can perform on your electric motor to make sure it is in operating condition and doesn’t require any considerations. These testing also helps you avoid certain damages by helping you find the problems even before it happens.

4. What Are The Applications Of 5kw Electric Motor?

Electric motors are important tools in this modern era. They reduce the effort and increase our ability to perform a certain task. They deliver convenience and comfort by reducing the labor required and working without any delay. Likewise, a 5kW 3 phase electric motor is used for different purposes in industries, household appliances, cars, boats, pumps, and power tools. Let’s have a look at some of the applications of 5kW electric motors.

Industrial Automation

Most machineries in industries work non-stop, some of these machinery use 5kw electric motor to automate their operation and meet the demand of this modern world. A 5kW is extremely efficient and the automatic control system provides high production value. Industrial automation is impossible without electric motors.

Household Appliances

Households appliances such as washing machines, dryers, blenders, and fans use motors like a 5kW electric motor. The electric motor in these equipment is used for different purposes, in the washing machine the electric motors provide the rotation that helps to rotate the clothes in the machine. A 5kw electric motor is also used in air conditioners and refrigerators.

Power Tools

Power tools are portable equipment that has a battery attached to them. These power tools use 5kW electric motors. These tools are designed to perform different applications. These tools might be grinders, drills, controllers, sanders, etc. These tools save time and cost.

Figure 2- Applications of 5kW Electric Motor

5. How many amps does a 5kw electric motor draw?

A 5kw electric motor draw 30A at 120V, 17.348A at 208V, 15.035A at 240V, 13.027A at 277V and 7.518A at 480V.

6. What Are The Major Parts Of A 5kw Electric Motor?

Figure 3- Parts of 5kw Electric Motor

A 5kW electric motor is widely used in different domestic and industrial settings. So it is important to know its parts thoroughly to keep it maintained and functional throughout its lifecycle. Below mentioned are some of the important parts of a 5kW electric motor.

The Stator, Rotor, Brushes and Commutator

The 5kw electric motor depends on the electromagnets. The stator is created by a series of small coils arranged in a circular manner, these coils help 5kW electric motor to generate a magnetic field. Likewise, the rotor is formed by another coil wound around the armature and attached to the shaft. The rotor has metallic brushes that keep continuous contact with the surface of the stator, this is because you cant attach the wires to the rotating coil. The surface that is in contact with the rotor along with the stator windings is connected with the power terminals located in the motor housings.

When the power is given, the magnetic field is produced because of the electricity that flows into the field’s coil. It flows through the brushes and energizes the armature coil. The commutator is also part of the electric motor, in the DC motor that runs on a battery, the commutator works as a switch that is attached to the rotor shaft to reverse the electrical field. This field reversal is crucial to keep the rotor spinning in one direction.

Gears and Belts

The gear and belts are very important parts of the electric motor because the gear system and drive belts convert the spinning shaft motion into some useful movements. The spinning motor shaft is not very useful, it can only be used for spinning the fan blade and drilling purposes, that’s why gear and belts are important. The rotational speed can be increased by the configuration of the belts and gears that leads to the reduction of power. Or you can increase the power while reducing the rotational speed. With the help of gear and belts, multiple functions can be performed simultaneously.

Bearings

Bearings are used to reduce the friction in the electric motor. The larger the motor the more friction is created between the different moving parts of the electric motor. This frictional force reduces the efficiency of the motor by opposing the movement of the rotor and that ultimately leads to wearing down the parts.  Most motors have the bearing between the stator and the rotor to minimize the air gap. Large motors have roller bearings while small motors have ball bearings. Bearings require periodic lubrication, this maintenance procedure is important along with the service and cleaning of the stator windings and rotor brushes.

These are the main parts of a 5kW 3 phase motor. Although a 5kW also has different components that help it perform the operations these are the major parts and they need to be maintained and serviced carefully in order to run the electric motor efficiently and effectively.

7. What is the typical efficiency of a 5kw electric motor that Xinnuo offers?

The typical efficiency of 5kW electric motors Xinnuo offers ranges from 85% to 90%.

We at Xinnuo always work towards making our electric motors more efficient and powerful. Our research department is equipped with technological equipment to bring the ideas to improve the efficiency of our electric motors. Our manufacturing processes are designed in a way to produce precise components for your electric motors and make them as efficient as possible.

8. What are the ambient operating conditions of a 5 kW three-phase electric motor?

The operating conditions for electric motors are important factors that decide the service life of motors and have a direct impact on the motor part’s functionality. Below are some of the ambient operating conditions for a 5kW 3 phase electric motor

Operating temperature:

The maximum ambient temperature to operate a 5kW electric motor is 40°C. As the temperature rises above that, the efficiency of the motor will go down.

Humidity:

The humidity should be below 80% even when a 5kW electric motor is running. This helps to extend the life of the motor and reduce the risk of corrosion damage.

Installation altitude:

It is also an important factor to operate a 5kW electric motor at its full efficiency. The cooling system of an electric motor is impaired at a higher altitude because of the low-density air.  The 5kW electric motors are designed to work below 3300 feet.

Protection category:

It is important to protect a person operating the electric motor from any kind of potential health threat. When an excessive amount of the current passes through the electric motor the motor protection unit trips. The circuit breakers and fuses are used as protection units. It saves the operator from electric shocks, also the control equipment, and many other components.

9. What is a three phase electric motor?

The function of an electric motor is to convert electrical energy into a mechanical form. According to the type of supply, the electric motors can be differentiated into AC motors or DC motors. Let’s have a look that what is the induction motor, its type, and its applications.

The induction motors specifically three-phase induction motors are widely used AC (alternating current) motors to generate mechanical power for industrial applications. Among all the motors used in the industry, 80% of motors are three-phase induction motors. That makes the induction motor most important among all the other types of motors.

A three-phase induction motor operates on a three-phase supply. The three-phase supply current creates the electromagnetic field in the stator windings that leads to the generation of the torque in the rotor windings of the electric motor having a magnetic field.

There are two types of three-phase electric motor based on rotor winding.

Squirrel Cage:

The shape of the rotor of this motor resembles the shape of the cage of the squirrel that’s why it is known as a squirrel cage induction motor. The construction of this type of motor is simple and 80% of induction motors are squirrel cage induction motors. The rotor of this motor consists of a cylindrical laminated core and has slots on the outer lining. The slots are skewed at some angle. It is because it helps to prevent magnetic locking between the rotor teeth and the stator. It increases the length of the rotor conductor and hence increases the resistance in the rotor.

Slip-Ring:

It is also known as a wound rotor and it consists of a laminated cylindrical core with slots on the outer lining. These slots have rotor windings. In this kind of three-phase electric motor, the windings are wounded in a way that the number of poles of the rotor windings is the same as the number of poles of stator windings. End terminals of the rotor windings are connected to the slip-rings this is why it’s called a slip ring three-phase induction motor. The external resistance can be connected with the rotor circuit through the slip ring and brushes. This helps in controlling the speed of the motor and also improves the starting torque. The external resistance is employed for the starting purpose and if it remains connected while the motor is in running condition, it can increase the rotor copper loss. High rotor resistance is good for the starting condition. So, the external resistance is connected to the rotor circuit during the starting condition.

The maintenance of the slip ring motor is more and that’s why this motor is only used when variable speed control and high starting torque are required. Otherwise, the squirrel cage motors are preferred over slip-ring motors.

10. How does Xinnuo ensure high-quality steel electric motors?

Xinnuo is a certified electric motor manufacturer with the stringest quality control. We believe the quality of the electric motors is the single most important factor that increases its life and efficiency and that’s why we don’t compromise on the quality of our electric motors.

We use high-tech electrical steel for the economically viable stators and rotors, which are the essential parts of the electric motors that are helping in many different applications. The electrical steel ensures high magnetic permeability and low power loss making the electric motor highly efficient with top-notch performance.

Our manufacturing facility is one of its kind and has technological equipment that performs the precise operation to manufacture the high-quality electric motors with impeccable efficiency.

11. Does Xinnuo offer 5kw electric motors?

Yes, Xinnuo offers a 5kw single phase motor and 5kW 3 phase motor with exemplary power and reliability. Our electric motors are trusted by industrialists across the globe. Our 5kW electric motors are used from normal households to run the machinery in different industries. Xinnuo has a state-of-the-art manufacturing facility with technological equipment that helps us to produce high-performing and efficient electric motors. From 5kw to 10kW electric motor, from 1Hp to 500Hp, we provide you with application-specific electric motors at an affordable price that delivers performance beyond your expectations.

12. How can I order my 5 kilo-watts electric motor from Xinnuo motors?

You can call us on the given contact number or fill out the quotation form and our customer representative will be with you with your quotation. You can also email us at the given email address with your queries and we will get back to you. When you order from Xinnuo, you don’t have to think about anything else. You order and get your properly packaged electric motor delivered right at your doorsteps within a matter of days.

References:

https://www.electricaltechnology.org/2021/04/applications-of-electric-motors.html

https://www.renown-electric.com/blog/5-motor-testing-methods-you-should-be-implementing/