Product Description

Product Description

JY series one-starting-capacitor single – phase asynchronous motor

Power :0.18KW~1.5KW
Protection class: IP44   Insulation class: F

Cooling method: IC0141 Rated frequency: 50HZ

JY series single-phase capacitor super-asynchronous motor, suitable for demanding starting torque, and the starting current there are certain restrictions on the occasion, can be widely used in air compressors, refrigerators, medical equipment and a variety of need to start Small machinery. This series of motors for the closed fan, there are 09,1,2 3 frame number. According to the need to be cast aluminum and iron 2 shells.

Applications: Where a larger starting torque and a limited starting current are required, and can be used as driving motor of air compressors, refrigerators, medical apparatus and any other small machines which demand full load starting. 
Memo: The motor is designed according to powersupplies 220V/110V, 50Hz, Special design may be accommodated with the customers, particalar requirements as 230V, 50Hz or 220V/110V, 60Hz, ect.

PERFORMANCE DATA                                     

Frame Type Power Speed
Power factor Locked rotor torque
Rated torque
Breakdown torque
Rated torque
2 JY2A-2 1.5 1.1 2850 0.77 71 2-3.5 1.8-2
JY2B-2 1 0.75 2850 0.75 70 2-3.5 1.8-2
JY2A-4 1 0.75 1400 0.68 69 2-3.5 1.8-2
JY2B-4 3/4 0.55 1400 0.68 67 2-3.5 1.8-2.
1 JY1A-2 3/4 0.55 2800 0.72 66 2-3.5 1.8-2
JY1B-2 1/2 0.37 2800 0.72 66 2-3.5 1.8-2
JY1A-4 1/2 0.37 1400 0.62 64 2-3.5 1.8-2
JY1B-4 1/3 0.25 1400 0.62 60 2-3.5 1.8-2
09 JY09A-2 1/3 0.25 2800 0.72 63 2-3.5 1.8-2
JY09B-2 1/4 0.18 2800 0.72 60 2-3.5 1.8-2
JY09A-4 1/4 0.18 1400 0.62 56 2-3.5 1.8-2


Frame Mounting Dimension   Overall Dimension
2 160 112 63 19 40 6 21.5 100 12 115 95 140 0 M8 3 190 190 128 246 330
1 140 100 56 16 40 5 18 90 10 100 80 120 0 M8 3 176 176 121 220 268
09 125 100 50 14 30 4 15.5 80 10 85 70 105 0 M8 3 156 156 108 190 258

Conventional mounting type and suitable frame size 

Frame Basic Type DerivedType
V3 V5 V6 B6 B7 B8 V15 V36 B14 B34 V18

Application: Universal
Operating Speed: Low Speed
Number of Stator: Single-Phase
Species: Jy Series Single-Phase Capacitor Start Induction M
Rotor Structure: Driving
Casing Protection: Protection Type


single phase motor

How Does the Power Factor Influence the Performance of Single-Phase Motors?

The power factor plays a significant role in influencing the performance of single-phase motors. It affects the efficiency, power consumption, and voltage drop of the motor, ultimately impacting its overall performance. Let’s explore the relationship between power factor and the performance of single-phase motors:

The power factor is a measure of the efficiency with which electrical power is utilized by a motor. It represents the ratio of real power (active power) to apparent power in an electrical circuit. In single-phase motors, the power factor is primarily influenced by the type of motor and its load characteristics.

A low power factor indicates that the motor is drawing more reactive power (kVArs) from the electrical supply, which is not effectively converted into useful work. This results in a higher demand on the electrical system and reduces the efficiency of the motor. Low power factor can lead to increased energy consumption and higher operating costs.

A high power factor, on the other hand, indicates that the motor is utilizing the supplied electrical power more efficiently, converting a greater proportion of it into useful work. Motors with a high power factor operate more efficiently, consume less energy, and reduce the overall demand on the electrical system.

In addition to energy efficiency, the power factor also affects voltage drop in the electrical system. A low power factor can cause higher voltage drops due to increased reactive power flow. This can result in decreased motor performance, reduced torque output, and potential motor overheating.

It’s important to note that the power factor can be improved by implementing power factor correction techniques. Capacitors are commonly used to improve the power factor in single-phase motors. By adding capacitors to the electrical system, the reactive power demand is offset, resulting in a higher power factor and improved motor performance.

In summary, the power factor significantly influences the performance of single-phase motors. A low power factor reduces motor efficiency, increases energy consumption, and can cause voltage drop issues. Implementing power factor correction techniques, such as capacitor banks, can help improve the power factor, leading to better motor performance, energy efficiency, and reduced operating costs.

single phase motor

Can single-phase motors be used in agricultural equipment like water pumps?

Yes, single-phase motors can be used in agricultural equipment like water pumps. Single-phase motors are commonly used in various agricultural applications due to their simplicity, affordability, and ease of use.

Water pumps are essential for irrigation systems, livestock watering, and other agricultural tasks that involve moving water. Single-phase motors can power these water pumps effectively, depending on the specific requirements of the application.

When selecting a single-phase motor for a water pump in agricultural equipment, it is important to consider several factors:

  1. Power requirements: Assess the power requirements of the water pump, including the flow rate and pressure needed for efficient water movement. This will help determine the appropriate horsepower (HP) rating for the motor.
  2. Voltage availability: Check the available voltage supply in the agricultural setting where the water pump will be used. Single-phase motors typically operate on standard residential voltages, such as 120V or 240V, making them compatible with common power sources.
  3. Motor efficiency: Consider the efficiency of the single-phase motor. Higher motor efficiency means less energy waste and lower operating costs over time. Look for motors with high efficiency ratings to optimize energy usage.
  4. Starting mechanisms: Depending on the specific water pump application, you may need to consider the starting mechanism of the single-phase motor. Some motors have built-in starting mechanisms, such as capacitor start or capacitor start-capacitor run, to provide sufficient starting torque for the pump.
  5. Maintenance and durability: Evaluate the maintenance requirements and durability of the single-phase motor. Agricultural environments can be demanding, so selecting a motor that is designed for rugged use and requires minimal maintenance can help ensure reliable operation.

By considering these factors and selecting a suitable single-phase motor, agricultural equipment like water pumps can be effectively powered, facilitating essential tasks in farming and irrigation.

single phase motor

How does the starting mechanism work in a single-phase motor?

The starting mechanism in a single-phase motor is a crucial component that enables the motor to overcome the absence of a rotating magnetic field during startup. It provides the initial torque required to initiate rotation. The specific starting mechanism used in a single-phase motor depends on the motor design and application requirements. Let’s explore the common methods used in single-phase motors and how they work:

  • Auxiliary Windings: Single-phase motors often incorporate auxiliary windings, also known as starting windings or auxiliary coils. These windings are placed in the stator alongside the main winding. The auxiliary winding is electrically connected in series with a capacitor, creating a secondary magnetic field that is out of phase with the main winding’s magnetic field. During startup, when the motor is powered, the current flows through both the main winding and the auxiliary winding. The phase difference between the currents in the two windings creates a rotating magnetic field, which initiates the motor’s rotation. Once the motor reaches a certain speed, the auxiliary winding is disconnected, and the motor continues to run using only the main winding.
  • Centrifugal Switch: Some single-phase motors employ a centrifugal switch as part of the starting mechanism. The centrifugal switch is typically attached to the motor shaft and operates based on centrifugal force. During startup, the switch remains closed, connecting the auxiliary winding and the associated starting mechanisms, such as capacitors. This allows the auxiliary winding to create the necessary phase shift and initiate rotation. As the motor accelerates, the centrifugal force increases, causing the switch to open. When the switch opens, it disconnects the auxiliary winding and associated starting mechanisms. The motor then operates using only the main winding, which is sufficient to sustain rotation.
  • Starting Capacitors: Capacitors are commonly used in single-phase motors to provide the necessary phase shift and create a rotating magnetic field during startup. The capacitor is connected in series with the auxiliary winding. When the motor is powered, the capacitor stores electrical energy and releases it in a controlled manner, creating a phase shift between the current in the main winding and the auxiliary winding. This phase difference enables the production of a rotating magnetic field, initiating motor rotation. Once the motor reaches a certain speed, the centrifugal switch or other control mechanism disconnects the capacitor, allowing the motor to run efficiently using only the main winding.

The starting mechanism in a single-phase motor is designed to provide the required initial torque to overcome inertia and start the motor’s rotation. By creating a rotating magnetic field or introducing a phase shift, the starting mechanism enables the motor to generate the necessary torque during startup. Once the motor reaches a certain speed, the starting mechanism is deactivated or disconnected, and the motor continues to operate using only the main winding.

It’s important to note that the specific starting mechanism used in a single-phase motor depends on factors such as motor design, power requirements, and application considerations. The selection and design of the starting mechanism ensure reliable and efficient motor startup, contributing to the overall performance of the motor in various residential and industrial applications.

China supplier Jy Series Single-Phase Capacitor Start Induction Motor   vacuum pump electricChina supplier Jy Series Single-Phase Capacitor Start Induction Motor   vacuum pump electric
editor by CX 2023-10-20