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7 HP Electric Motor
In China

Leading 7 HP Electric Motor Manufacturer

  • 100% Copper Coil
  • High Precision And Low Noise Bearing
  • One Time Molding
  • Low Vibration
  • 100% Power Output

7 HP Electric Motor Catagory

Xinnuo is currently successfully catering to clients across the world with high-grade motors.

7 hp electric motor Ms series 1
MS Series Aluminum Shell 7 HP Three-phase B3 Flange Motor
7 hp electric motor Ms series 2
MS Series Aluminum Shell 7 HP Three-phase B5 Flange Motor
7 hp electric motor Y3 series
Y3 series 7 hp electric motor
7 hp electric motor YCL series
YCT Series Electromagnetic Speed Regulating 7 HP Motor

7 HP Electric Motor

Xinnuo is currently successfully catering to clients across the world with high-grade motors.

7 HP Electric Motor Specifications

Ambient temperature-15℃≤0≤40℃
Altitudenot exceeding 1000m
Rated voltage380Vor any voltage between 220-760V
Rated frequency50HZ, 60HZ
Protection classIP 55
Insulation classF, H
Cooling methodICO141
ConnectionStar-connection for up to 3kw, delta-connection for 4kw and above.

Data Sheet of 7 HP Electric Motor

For more info, click to download our catalog

7 hp electric motor Data Sheet

Factory Tour

7 hp electric motor Factory1

Packing of Electric Motor

Packaging Details: Strong cartons with foams inside, or plywood case
Delivery Detail: 15-30 working days after payment

7 HP Electric Motor | Ultimate FAQ Guide


Does your electric motor need to operate well while also being reliable?

Using a 7 HP electric motor improves the efficiency of motor-driven equipment. Superior capabilities allow it to be used with a wide range of high-quality appliances and guarantee unsurpassed dependability.

One of China’s most reliable electric motor manufacturers, Xinnuo Motor, can provide motors with a wide horsepower range. This frequently asked questions (FAQ) guide is a valuable resource for you as you learn more about this motor. Let us take a step forward and dive a little more into this.

1. What is a 7 HP Electric Motor?

A 7 HP motor is a good choice for modern electronics.  According to its HP rating, electrical power flowing through this motor delivers 5219.9 joules of mechanical energy every second. This motor-based equipment benefits from the amp rating and size of this motor.

The high-quality materials used in constructing this motor result in a highly functioning device. Its main components are built to last for extreme vibrations and electrical pressure. The motor’s most essential components are the terminal box, rotor, stator, bearing, key, shaft cover, and jacket.

This motor’s wire connection and reversing procedure are safe. It has excellent performance and can operate at a variety of temperatures. Apart from that, it has industry-standard protection and collapsing features. As a result, you may depend on the 7 HP motor to increase the standard of your electronic project.

This motor is available in both single-phase and three-phase variants. In both single and three-phase configurations, the following 7 HP electric motors are often used:

  • ML Series single-phase aluminum-shelled motors
  • MS series three-phase aluminum shell electric motor
  • YL Series Single-Phase, Dual Value Capacitor Motors
  • Y2 series three-phase electric motor
  • YE3 series three-phase electric motor
  • JY Series single-Phase Capacitor Starting Motor

Figure 1- 7 HP Electric Motor

Figure 1- 7 HP Electric Motor

2. What are the Specifications of a 7 HP Electric Motor?

7 HP electric motors are reliable in commercial and industrial applications due to their characteristics.

These are the most prominent 7 HP electric motor specifications:

  • RPM range 1400-2800
  • IP55 protection.
  • IEC34-1 approved and recognized by UL.
  • NEMA-compliant torque ratings.
  • F-class insulator.
  • Frequency of 50 Hz.
  • 5% efficiency
  • Voltage 208-230/460.
  • Heavy Duty Enclosed Fan Cooled
  • Cast iron construction

Xinnuo Motor has been producing high-quality 7 HP motors for a long time. Contact us if you want to see and feel the brilliance of electric motors at a reasonable price.

3. How Much Amperage Does a 7 HP Electric Motor Draw?

Electric motor amps in the 7 HP range vary for various electric motors. In most cases, they have a current rating of 10A or higher. However, this depends on the kind of electric motor. The following is a list to help you better comprehend the amp rating of a 7HP electric motor.Here is AMP rating calculator.

SeriesAmp Rating
Y2 Series11A
Y3 Series11A
YE3 Series10.6A

Figure 2- Motor Amp Checking

Figure 2- Motor Amp Checking

4. What is the Cable Size of a 7 HP Electric Motor?

To find the cable size for a 7 HP electric motor, multiply the full load current of the motor/load by 1.5. As a result, the cable rating formula may be stated as Cable size = 1.5 x Full Load Current.

To get the proper cable size, let us figure out how much cable we need for a 5.5kW/7HP motor that runs at 415V, 0.86pf.

The full load current motor is 10A.

Size of cable: 1.5 x 10 = 15 A

As a result, the cable should carry at least 15A.

Figure 3- Electric Motor Cable Size

Figure 3- Electric Motor Cable Size

5. How can you Differentiate Between a 7 HP Single Phase and a Three Phase Motor?

If you are unfamiliar with HP motors, seeing the same motor in a different phase might be perplexing. In this section, we will know the difference between a single-phase and three-phase 7 HP motor.

Power Supply Wiring

An electrical supply with a single-phase requires Phase as well as Neutral wires. There are just three wires in a three-phase power source: the three conductors and the neutral.

When three-phase power is provided straight to server cabinets, cabling and installation costs are reduced.


While the single-phase motor can only deliver 230V, the three-phase motor can deliver up to 415V.

Where it is useful

Mobile gadgets and domestic appliances use less energy in residential residences. Electronic costs are more significant in commercial construction enterprises. So it needs three-phase electricity to operate.


Motor Startups are required for a single-phase motor to function. Without external assistance, three-phase electricity can get up and running.


For families and small companies, single-phase power sources are less efficient than the three-phase power supply.

6. What Is the Power Output of a 7 HP Electric Motor?

A 7 HP motor’s power consumption is ideal for today’s electrical devices. There is no difficulty in determining the motor’s daily power usage. Several things influence the 7 HP electric motor’s power consumption. Like, for example.


The motor efficiency ratio is the proportion of output power to input power.

The load factor

In practice, the electric motor’s load factor tells us how much of the full load amp is being used.

Hours of operation

Allow a motor to operate for 15 hours at 80% load and 90% efficiency.

So, the power used = 0.746WHPEfficiencyload factoroperating hours

= 0.74670.90.815

= 56.3976 KWh

Using this method, you may also calculate your power bill if you just know the price per kilowatt-hour (kWh) in your area.

7. How to Control a 7 HP Electric Motor’s Quality?

There may be problems with the 7 HP electric motor. That is why you need to monitor the motor’s quality.

You can use the steps below to diagnose the motor.

Shaft and bearing vibration testing

Bearings and shafts vibrate naturally. There are limitations. Vibration causes damage to the motor. It may have occurred due to the shaft and bearing misalignment. Align them and correct them.

Power Checking

Your 7 HP motor must be using enough power for its capabilities. Check your motor’s power consumption using a multimeter. Before testing, check the motor’s handbook for voltage range. Voltage ranges vary amongst motors.

Cooling Fans Testing

The motor’s cooling system is critical. Keep your motor cool with functional fans. Ensure your motor’s cooling fan is aligned and adjusted correctly. Fix the fan’s mounting.

Physical State Checking

Examine the motor for damage or damaged components. If detected, replace them immediately.

Figure 4- Motor Testing

Figure 4- Motor Testing

8. In What Ways can you Extend the Life of a 7 HP Electric Motor?

A 7 HP electric motor’s lifetime is dependent on proper maintenance and handling. So, what steps should you take to ensure that your motors are correctly maintained? The following advice may help you prolong the life of your electric motors.

Correctly Apply Lubricant

Lubrication is the most critical factor in a motor’s ability to run at its peak efficiency. You should thus lube your engine consistently. The use of lubricants helps to prevent overheating and vibration. You should also ensure that you are using a dust-free lubricant.

Figure 5- Motor Lubrication

Figure 5- Motor Lubrication

Routine Maintenance Of The Engine

Cleaning is an essential element of maintaining a well-functioning engine. You should make cleaning a regular part of your schedule. Your engine will not be damaged if you use the correct cleaning chemical.

Make Certain There Is Enough Cooling And Voltage Control

Even if your engine is properly lubricated, excessive heat might cause it to overheat. To avoid overheating, make sure you have enough cooling in place. Ensure that your motors are operating at the correct voltage, as specified by the manufacturer.

Check For Excessive Vibration

For motors, vibration is a reality of life. Vibration, on the other hand, may hurt both longevity and performance. There are several ways you may tell whether your motors are vibrating too much or too little. As a last precautionary measure, take appropriate steps to reduce the vibration.

All parts must be properly aligned.

Put The Motors Away Properly When You are done using them.  When dismounting a motor for servicing or storage, ensure that the motor is stored correctly. Also, be careful to handle the procedures with care. When shipping or moving motors, use extreme caution at all times.

9. What are the Uses of a 7 HP Electric Motor?

The usage of a 7 HP electric motor in various electronic applications ensures a high level of dependability. Its most important functions are the ones that have made it so popular in a wide range of industries.

Single-phase and three-phase 7 HP electric motors can be used for a variety of purposes, including:


Flexible consumer electrical devices need a 7 HP single-phase motor. In addition, this motor is employed in motor-driven appliances such as refrigerators, air conditioners, and fans, which are all vital parts of the home’s interior.

Industrial Tools

This three-phase electric motor is most often used in industrial settings. Compressors, turbines, and other types of electrical equipment use 7 HP, three-phase motors.

In addition, this motor may be used in mining and automotive applications. It is trendy in robotics because of its excellent speed regulation and conventional torque rating.

Figure 6- 7 HP Electric Motor In Industry

Figure 6- 7 HP Electric Motor In Industry

Farming Machinery

7 HP 3 phase motors are used in various agricultural gear, including pumps, tractors, rollers, and land imprinters. In agriculture, these motors boost the efficiency of the machinery.

10. How do you choose the Best 7 HP Electric Motor?

If your motor is not functioning correctly, your project may be doomed. This is something that a highly qualified and knowledgeable manufacturer can assist you with. Consequently, how can you tell whether or not a particular manufacturer can be trusted?

To ensure that a manufacturer is the best option for your motor manufacturing, you should investigate the following information about them.

  • Extremely knowledgeable.
  • Excellent working environment.
  • Professional and highly competent workers.
  • Having access to the most recent technologies.
  • Meet deadlines.
  • Capacity for large-scale production

These factors may help decide if a motor manufacturer is among the finest in the industry. In this sense, Xinnuo motors could satisfy all of the requirements.

11. Why does a 7 HP Electric Motor Fail?

7 HP Electric motors are excellent equipment drivers because of their great efficiency and dependability. There are, of course, periods when the motors fail. Overloading is the most common cause of motor failure.

There are many additional aspects to consider. Let us take a closer look.


Exceedingly hot motors are a crucial cause of premature motor failure. Isolation degraded by heat When motor insulation deteriorates, the windings are short, and the motor fails to work.

Insulation loses its lifespan when it heats up above its temperature rating in an electric motor. The insulation will degrade faster in hotter climates.

Phase inconsistency

Three-phase electric motors operate hotter than their rated specifications because of phase imbalance. The more the phase imbalance, the higher the temperature rises. These high temperatures exacerbate insulation degradation and other issues.

Unbalanced Voltage

Unbalanced voltage happens whenever the voltage terminals are not identical.  An unstable voltage may lead to one winding being overheated and melting insulation. The voltage imbalance causes an imbalance in current. Every service call should include a check for voltage imbalance.

Poor ventilation

Electrical energy is converted into mechanical energy by electric motors. This heat must be evacuated, or the motor insulation will be destroyed.

Figure 7- Electric Motor Ventilation

Figure 7- Electric Motor Ventilation

Air passageways allow free movement of air around and through motors. This breeze cools the motor. Anything that inhibits airflow across the motor makes it run hotter than it should. Airflow is significantly reduced if the engine is oil-coated by leaky seals or over lubrication.


A 7 HP electric motor is suitable for powering complex motor-based equipment. The Xinnuo motor is the finest choice if you are looking for high-quality 7 HP electric motors.

Single-phase and three-phase electric motors are among our best-known products. We hope that our FAQ guide has provided you with a better understanding of this motor. Please contact us if you have any more questions or concerns. Keep an eye out for updates.


You can also send the inquiry to email: sales@xinnuomotor.com directly.
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