Description
1. Technical Specifications
JY Series Capacitor Start Single Phase Induction Motor Technical Data：
| Type | Output | Voltage | Frequency. | Current | Power | Eff | Speed | Tstart/Tn | Ist/In | Tmax/Tn | |
| KW | HP | (V) | (Hz) | (A) | factor | (%) | (r/min) | ||||
| JY09B-2 | 0.18KW | 0.25HP | 220 | 50 | 2.15 | 0.76 | 50 | 2800 | 3 | 6.5 | 1.8 |
| JY09A-2 | 0.25KW | 0.34HP | 220 | 50 | 2.82 | 0.76 | 53 | 2800 | 3 | 6.5 | 1.8 |
| JY1B-2 | 0.37KW | 0.5HP | 220 | 50 | 3.74 | 0.75 | 60 | 2800 | 3 | 6.5 | 1.8 |
| JY1A-2 | 0.55KW | 0.75HP | 220 | 50 | 5.36 | 0.74 | 63 | 2800 | 3 | 7 | 1.8 |
| JY2B-2 | 0.75KW | 1HP | 220 | 50 | 6.81 | 0.77 | 65 | 2800 | 2.8 | 7 | 1.8 |
| JY2A-2 | 1.1KW | 1.5HP | 220 | 50 | 9.45 | 0.79 | 67 | 2800 | 2.8 | 7 | 1.8 |
| JY09B-4 | 0.12KW | 0.16HP | 220 | 50 | 1.7 | 0.63 | 48 | 1400 | 2.8 | 7 | 1.8 |
| JY09A-4 | 0.18KW | 0.25HP | 220 | 50 | 2.52 | 0.65 | 50 | 1400 | 2.8 | 6.5 | 1.8 |
| JY1B-4 | 0.25KW | 0.34HP | 220 | 50 | 3.2 | 0.67 | 53 | 1400 | 2.8 | 6.5 | 1.8 |
| JY1A-4 | 0.37KW | 0.5HP | 220 | 50 | 4.03 | 0.72 | 58 | 1400 | 2.8 | 7 | 1.8 |
| JY2B-4 | 0.55KW | 0.75HP | 220 | 50 | 5.12 | 0.74 | 66 | 1400 | 2.8 | 7 | 1.8 |
| JY2A-4 | 0.75KW | 1HP | 220 | 50 | 6.9 | 0.76 | 68 | 1400 | 2.8 | 7 | 1.8 |
JY Series Capacitor Start Single Phase Induction Motor Mounting Arrangements:
Conventional mounting type and suitable frame size :
| Frame | Basic Type | DerivedType | |||||||||||||
| V3 | V5 | V6 | B6 | B7 | B8 | V15 | V36 | B14 | B34 | V18 | |||||
| 63~112 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | ||||
| 132~160 | √ | √ | √ | √ | √ | √ | √ | √ | – | – | – | ||||
| 180~280 | – | – | – | – | – | – | – | – | – | – | – | ||||
| 315~355 | – | √ | – | – | – | – | – | – | – | – | – | ||||
JY Series Capacitor Start Single Phase Induction Motor Installation Dimension:
| Frame Size | Mounting Dimension (mm) | Overall Dimension (mm) | ||||||||||||||||||
| A | B | C | D | E | F | G | H | K | M | N | P | R | S | T | AB | AC | AD | HD | L | |
| 2 | 160 | 112 | 63 | 19 | 40 | 6 | 15.5 | 100 | 12 | 115 | 95 | 140 | 0 | M8 | 3 | 190 | 190 | 128 | 246 | 330 |
| 1 | 140 | 100 | 56 | 16 | 40 | 5 | 13 | 90 | 10 | 100 | 80 | 120 | 0 | M8 | 3 | 176 | 176 | 121 | 220 | 286 |
| 09 | 125 | 100 | 50 | 14 | 30 | 4 | 11.5 | 80 | 10 | 85 | 70 | 105 | 0 | M8 | 3 | 156 | 156 | 108 | 190 | 258 |
2. Product Overview: Powering Colombia’s Small-Scale Industry
The EP-JY Series Capacitor Start Single Phase Induction Motor is a robust electromechanical solution designed specifically to meet the high starting torque requirements of machinery operating on single-phase power grids. Unlike standard split-phase motors, the EP-JY series utilizes an electrolytic capacitor in series with the auxiliary winding to provide a starting torque that is 2.5 to 3.0 times the rated torque. This feature is critical for applications in Colombia’s diverse industrial landscape, from the coffee processing plants in the Eje Cafetero to the small-scale woodworking shops in Bogotá. Engineered with high-grade cast iron housing and precision-wound copper coils, these motors offer superior thermal dissipation and longevity even in humid and variable voltage environments. Compliant with international IEC standards and optimized for the 60Hz frequency used in Colombia, the EP-JY series ensures seamless integration into air compressors, pumps, refrigerators, and medical equipment, providing a reliable power source where three-phase supply is unavailable.
3. Five Key Engineering Facts
- High Starting Torque: Delivers up to 300% of rated torque, ideal for hard-to-start loads like compressors.
- Reliable Capacitor: Equipped with heavy-duty electrolytic start capacitors rated for frequent starts.
- Centrifugal Switch: Durable mechanical switch disconnects the start winding at 75% synchronous speed.
- Thermal Protection: Optional built-in thermal overload protection to prevent burnout.
- Standard Compliance: Meets IEC 60034-1 standards and is compatible with NEMA frame dimensions.
4. Regulatory Compliance and Electrical Safety in Colombia
In Colombia, the installation and operation of electric motors are governed by the RETIE (Reglamento Técnico de Instalaciones Eléctricas), which establishes mandatory safety requirements to prevent electrical accidents. The EP-JY Series motors are manufactured in strict compliance with these regulations, ensuring they are safe for use in residential, commercial, and industrial settings. Specifically, our motors adhere to NTC 2050 (Código Eléctrico Colombiano) standards regarding insulation resistance, grounding, and terminal box protection. The Class B or F insulation systems used in our motors are capable of withstanding the temperature rises permitted under Colombian environmental conditions, providing a safety margin against overheating.
Furthermore, for applications involving food processing or medical equipment, our motors comply with relevant hygiene and safety directives. Internationally, the EP-JY series aligns with IEC 60034 (Rotating Electrical Machines) and ISO 9001 quality management systems. We provide comprehensive documentation, including wiring diagrams and test certificates, to facilitate easy certification and inspection by local authorities. By choosing the EP-JY Series, Colombian businesses not only ensure operational efficiency but also mitigate legal risks associated with non-compliant electrical equipment, fostering a safer working environment for all.
5. Engineering Mechanics: Working Principle
The AC Motor working principle of the EP-JY Series relies on a split-phase induction mechanism enhanced by a capacitor. When single-phase AC power is applied, the main winding creates a pulsating magnetic field, which, by itself, cannot generate starting torque. To overcome this, an auxiliary “start” winding is placed 90 electrical degrees apart from the main winding. A capacitor is connected in series with this start winding, creating a phase shift in the current. This phase shift produces a rotating magnetic field, generating the high torque necessary to spin the rotor from a standstill. Once the rotor accelerates to approximately 75% of its synchronous speed, a centrifugal switch automatically opens, disconnecting the start winding and capacitor. The motor then continues to run solely on the main winding as a standard induction motor. This design combines the simplicity of a single-phase motor with the starting power usually reserved for more complex systems.
6. Market Trend Analysis: The Evolution of Single-Phase Motors in Colombia
The market for single-phase motors in Colombia is witnessing a significant shift towards higher efficiency and smart integration. As energy costs rise, there is a growing demand for motors that not only meet basic operational needs but also contribute to lower electricity bills. The EP-JY Series addresses this by incorporating low-loss silicon steel and optimized winding designs to improve power factor and efficiency, aligning with global IE2 and IE3 efficiency trends even in single-phase applications. Furthermore, the trend towards automation in small-to-medium enterprises (SMEs) is driving the need for motors that can easily integrate with simple control systems. While ac motors vs dc motors remains a common debate, the robustness and low maintenance of AC induction motors like the EP-JY series keep them as the dominant choice for fixed-speed industrial applications. Additionally, there is an increasing focus on durability against environmental factors; our motors featuring enhanced IP54/IP55 protection are becoming the standard requirement for agricultural and outdoor applications in Colombia’s tropical climate.
7. Applications: Where the EP-JY AC Motor Performs Best
The EP-JY Series Capacitor Start Single Phase Induction Motor is designed for single-phase 220V grids and built to handle
high starting torque (2.5–3.0× rated torque), frequent starts, and challenging environments such as humidity, dust, and voltage fluctuation.
It is an ideal choice for Colombia’s small-to-medium industrial applications where three-phase power is not available.
1. Air Compressors (Workshops & Small Industry)
In Bogotá and other urban industrial zones, compact single-phase compressors often face backpressure starts.
The EP-JY motor delivers strong starting torque to overcome this load, reducing stalled starts and improving reliability during frequent on/off cycles.
2. Water Pumps & Booster Systems (Agriculture / Rural)
For irrigation, water transfer, and pressure boosting, the EP-JY series supports stable operation in S1 continuous duty.
Its robust housing and winding design help handle long running hours and variable line voltage commonly found in rural facilities.
3. Coffee Processing Machines (Eje Cafetero)
In coffee plants, equipment like washers, pulpers, conveyors, and small grinders often run on single-phase supply.
The EP-JY motor’s dependable start performance helps avoid downtime when loads fluctuate due to wet materials and uneven feeding.
4. Food Processing & Mixers (Small/Medium Plants)
For dough mixers, spice mixers, and batch blending machines, the capacitor-start design supports confident starts under load,
while stable running speed helps maintain consistent product texture in continuous production environments.
5. Woodworking & Small Manufacturing
Machines such as table saws, small planers, belt sanders, and cutters require quick starts and stable running.
The EP-JY motor handles inertia loads smoothly and supports consistent performance in daily shop use.
6. Refrigeration & Light Industrial Equipment
Cold rooms, ventilation units, and general auxiliary equipment benefit from reliable starting and stable operation without requiring
three-phase supply—ideal for distributed facilities and small businesses.
7. Related Products
Our gearbox is the perfect companion for the EP-YS Series Aluminum Housing Three Phase Asynchronous Motor, offering superior performance and seamless integration in a wide range of industrial applications. Engineered with precision, our gearboxes are designed to efficiently transfer power from the motor to machinery, optimizing torque and speed for various systems like conveyors, air compressors, and industrial fans.
Made from high-quality materials, our gearboxes feature robust construction for long-lasting durability, even under heavy loads. The gears are manufactured using advanced heat-treatment processes, ensuring excellent wear resistance and minimal maintenance. With a range of gear ratios, our gearboxes offer the flexibility to adjust motor speed and torque to meet the specific demands of your application.
Whether you’re looking to reduce the rotational speed for high-torque output or increase speed for faster operation, our gearboxes provide a reliable and efficient solution. Additionally, they are designed to work in tandem with the EP-YS motor, enhancing its performance and efficiency. From food processing plants in Bogotá to manufacturing units in Medellín, our gearboxes deliver exceptional reliability and smooth operation, reducing downtime and improving overall productivity.
Frequently Asked Questions (FAQ)
Q1. How do I wire a single-phase induction motor with a JY series capacitor for 110V vs. 220V?
A1. Most EP-JY motors are dual voltage. The connection diagram is located inside the terminal box cover. Typically, for 110V (Low Voltage), the main windings are connected in parallel. For 220V (High Voltage), they are connected in series. Always refer to the specific jy series capacitor start single phase induction motor wiring diagram provided with your unit to avoid damage.
Q2. What is the difference between a capacitor start and a capacitor run motor?
A2. A capacitor start motor (like the EP-JY) uses a capacitor only during startup to provide high torque, which is disconnected by a centrifugal switch once the motor reaches speed. A capacitor run motor keeps the capacitor in the circuit permanently to improve running efficiency but has lower starting torque. The EP-JY is best for heavy starting loads.
Q3. Can I use the EP-JY motor for an air compressor in Bogota?
A3. Yes, absolutely. The EP-JY series is specifically designed for high inertia loads like air compressors. Its high starting torque (up to 300%) ensures the compressor can start even against backpressure, which is common in workshops across Bogota.
Q4. Where can I find ac motors near me in Medellin for immediate replacement?
A4. Colombia Ever-power has distribution partners in major cities including Medellin, Cali, and Barranquilla. Contact our sales team via the form below, and we will direct you to the nearest authorized stockist or arrange direct shipping to your facility.
Q5. What maintenance is required for the centrifugal switch in the EP-JY motor?
A5. The centrifugal switch is internal and generally maintenance-free. However, if the motor fails to start or the capacitor doesn’t disengage (hear a clicking sound), the switch contacts may be stuck or dirty. It is recommended to listen for the “click” during startup and shutdown as a health check.
Q6. How does the price of the EP-JY motor compare to other ac motors for sale in Colombia?
A6. The EP-JY series offers a competitive price-to-performance ratio. While slightly more expensive than basic split-phase motors due to the added capacitor and switch, it is more affordable than three-phase motors with VFDs for single-phase conversion. It provides the most cost-effective high-torque solution for single-phase grids.
Q7. Can I reverse the rotation direction of the EP-JY motor?
A7. Yes, the rotation is reversible. To reverse the direction, you typically need to swap the connections of either the main winding or the auxiliary (start) winding. The ac motor diagram on the nameplate will indicate the specific wire interchange (usually T5 and T8) to achieve clockwise or counter-clockwise rotation.
Q8. What should I do if the start capacitor fails?
A8. If the motor hums but doesn’t start, the capacitor may be faulty. You can replace it with a capacitor of the same microfarad (µF) and voltage rating. We supply genuine ac motor start capacitor replacements. Ensure the power is off and the capacitor is discharged before handling.
Q9. Is the EP-JY motor suitable for continuous duty applications?
A9. Yes, the EP-JY is rated for S1 continuous duty. Its cooling fan (TEFC) and cast iron housing dissipate heat effectively, allowing it to run continuously at rated load without overheating, provided the ambient temperature is within the specified range (usually -15°C to +40°C).
Q10. Do you provide a manual with the jy series capacitor start single phase induction motor wiring instructions?
A10. Yes, every motor ships with a comprehensive jy series capacitor start single phase induction motor manual. This document includes installation guidelines, safety precautions, wiring diagrams for different voltages, and maintenance schedules to ensure long service life.
Editor: PXY
