1-Phase Electric Motor 3.7kW 5Hp

The 1-Phase Electric Motor 3.7kW 5Hp is a specialized product used to convert electrical energy into mechanical energy, delivering stable performance and energy efficiency. With its ability to operate on standard 220V household electricity, this 1-phase electric motor is suitable for both small-scale production models and daily household applications. Let’s explore the details of this popular device with Thanh Thai Motor!

How is the 1-phase electric motor 3.7kW 5Hp designed?

This electric motor stands out with its characteristic design consisting of two motor capacitors, usually arranged symmetrically or placed close to each other. A neat, easily recognizable design optimized for installation space are factors that help identify the 1-phase motor 5Hp on the market.

What is the internal structure of the 3.7kW 5Hp 1-phase electric motor?

The 3.7kW 5Hp 1-phase electric motor is assembled from standard mechanical and electromagnetic assemblies, including:

• Stator: The stationary part, composed of magnetic electrical steel laminations and a winding system (working winding and starting winding). The winding is made of pure copper wire with a large cross-section to withstand the high rated current of the 3.7kW capacity.
• Rotor: A solid-cast squirrel-cage rotating shaft, processed with dynamic balancing to ensure smooth rotation and minimize centrifugal deviation when operating at high speeds.
• Capacitor system: Includes a starting capacitor (to create initial torque) and a running capacitor (to stabilize the magnetic field once the motor runs evenly).
• Housing: Thick cast iron frame protecting internal components from impacts, dust, and moisture according to standards.
• Bearings: Heavy-duty industrial ball bearings placed at both ends of the shaft to center the rotor, reduce friction, and prevent vibration.
• Cooling fan: Draws air from outside to blow through the cooling fins of the motor housing, helping to lower the temperature of the internal windings.

What types of 1-phase electric motor 3.7kW 5Hp are available?

Based on the rotational speed of the shaft, the Single-Phase Motor 5Hp is classified into the following 2 popular lines:

1-Phase Motor 3.7kW 5Hp 2-Pole (2,800 – 3,000 rpm)

Fast rotational speed, generating large volume and velocity, but heavy load pulling force is not as strong as the 4-pole line.

Technical specifications:

Model	132S
Shaft diameter	38mm
Keyway	10mm
Flange diameter	300mm
Weight	50kg
Dimensions	510 x 260 x 338 mm
Mounting type	Foot mounted (B3), Flange mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Water pumps: Drives centrifugal pump heads to supply water for high-rise buildings, agricultural sprinkler systems, or high-pressure washers.
• Industrial ventilation fans: Creates strong suction for woodworking shop ventilation systems, exhaust fans, or aquaculture pond aeration fans.
• Machining machine tools: Runs sliding table wood saws, tile cutting machines, and grinding machines requiring high rotational speed for smooth cutting surfaces.

1-Phase AC Motor 5Hp 4-Pole (1,400 – 1,500 rpm)

Standard rotational speed, balanced between pulling force and velocity, durable operation, generating less heat than high-speed lines.

Technical specifications:

Model	132M
Shaft diameter	38mm
Keyway	10mm
Flange diameter	300mm
Weight	50kg
Dimensions	510 x 260 x 338 mm
Mounting type	Foot mounted (B3), Flange mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications:

• Piston air compressors: Used to drive medium-sized air compressor heads, charging air into tanks with capacities ranging from 120 liters to 250 liters in automotive garages.
• Agricultural processing machinery: Installed for rice milling machines, flour grinders, whole-tree banana slicers, animal feed pellet pressing machines. Material conveyors: Operates moderate-load conveyor systems for agricultural products, cement, or bricks.
• Mixers: Runs small concrete mixing drums or fertilizer ingredient agitators.

What gearboxes can be combined with the 1-phase electric motor 3.7kW 5Hp?

With a standard industrial 28mm shaft size, this device is compatible with various gearboxes:

• Cast iron worm gearboxes: WPA, WPS, WPX, WPO series… using size 80 or 100 to ensure load-bearing capacity.
• Aluminum housing worm gearboxes: NMRV worm gearboxes size 075 or 090, suitable for machinery requiring light weight and rust resistance.
• Helical gearboxes: Small R, S, F series used for conveyors requiring smoothness and precision.
• Other drive devices: B-groove pulleys, 28mm shaft sprockets, and mechanical couplings.

Instructions for connecting the 1-phase electric motor

Supplying power to a 1-phase motor requires precise operation due to the large starting current. You can preview electric motor videos to clearly understand the terminal positions.

Step 1: Remove the terminal box cover

Use a screwdriver to remove the screws and open the capacitor box cover on the motor body. You can preview electric motor videos beforehand to clearly understand the position of the wiring terminals inside the terminal box.

Step 2: Connect the 220V power supply

Identify the 2 power supply terminals (usually marked Z1, U1 or according to the diagram printed on the box cover). Connect the two 220V power wires (L and N) to these two terminals. Use a wrench to tighten the nuts to ensure electrical contact, preventing heat generation and arcing.

Step 3: Operation and rotation direction check

Close the terminal box cover, turn on the circuit breaker (CB) to test run. If the shaft rotates in the opposite direction of the driven machine, disconnect the power and swap the positions of the two ends of the running winding (working winding).

Step 4: Troubleshooting when the connection diagram is missing

If the diagram on the cover is faded or difficult to identify wire ends, please refer to comprehensive videos on how to use a multimeter and identify wire ends to ensure correct technical connection.

Warranty, shipping and commitment policy at Thanh Thai Motor

Warranty up to 24 months

All electric motor products distributed by Thanh Thai Motor are covered by a genuine warranty for up to 24 months. Customers who purchase electric motors can completely rest assured with a transparent, fast, and professional after-sales policy.

Nationwide Shipping

Thanh Thai Motor supports nationwide shipping for all electric motors sold, ensuring safe and on-time delivery to every province across the country. Whether you are in the North, Central, or South, we are ready to serve you.

European Standard Quality – German Technology

Thanh Thai Motor sells electric motors manufactured with German technology, meeting European quality standards, ensuring durability, high efficiency, and stable operation for a long period – suitable for the strict requirements of industrial electric motors.

Competitive Prices – Attractive Offers for Dealers and Wholesale Customers

We commit to reasonable motor prices, offering the best electric motor products with high discount policies for bulk purchasers and distribution units. The more you buy – the better the profit.

Quality Commitment – Powerful Operation, Power Saving

Thanh Thai Motor sells electric motors wound with 100% copper wire, helping the machine run powerfully, consume less electricity, operate smoothly, and effectively reduce vibration – extending equipment lifespan. When purchasing an electric motor, prioritizing products with 100% copper core will be a wise decision, bringing long-term value.

At Thanh Thai Motor, we provide a full range of products, with various phases and capacities, such as:

• 220V electric motors (or 220V 1-Phase electric motors) are 1-Phase electric motors commonly chosen for many household appliances and light industrial equipment, offering convenience and efficiency.
• 380V electric motors are 3-Phase electric motors using three-phase power, commonly used in heavy industrial applications.

Full CO, CQ Certification Documents

Thanh Thai Motor provides the best quality electric motors. Each imported electric motor product from Thanh Thai Motor comes with a Certificate of Origin (CO) and a Certificate of Quality (CQ), meeting the requirements for large projects, constructions, and strict technical documentation.

Contact for Purchase

Do you need to buy an electric motor or seek advice on choosing an affordable electric motor that suits your needs? Contact Thanh Thai Motor immediately using the methods below:

• WhatsApp: +84966596219
• Email: codienthanhthai@gmail.com

The 1-phase electric motor 3.7kW 5Hp is an ideal solution for civil and small-to-medium production equipment systems thanks to its powerful capacity, stable operation, and ease of use. If you are looking for a durable, energy-saving, and easy-to-install product, do not miss the 1-phase electric motor 3.7kW 5Hp from Thanh Thai Motor.