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DYNAMATIC AS-252004-0145 Eddy Drive 20HP 230/460V 3PH

As-252004-0145 Dynamatic 20hp Eddy Current Adjustable Speed Drive 230/460v 3ph

( Brand: Dynamatic ), ( Manufacturer Part Number: AS-252004-0145 ), ( Part Type: Drive ), ( Country Of Manufacture: China )

Review DYNAMATIC 20hp Eddy Current Adjustable Speed Drive 230/460v 3ph

The **Dynamatic AS-252004-0145 20 Horsepower Eddy Current Drive** is a high-performance, variable-speed motor control system engineered for demanding industrial applications where precise torque modulation, energy efficiency, and reliability are critical. This robust unit combines a **20 HP (15 kW) induction motor** with a **hydraulic or eddy current clutch mechanism**, allowing seamless and gradual acceleration, deceleration, and speed adjustment without mechanical wear or the need for complex gearing. Designed for **230V or 460V, three-phase AC power**, the AS-252004-0145 integrates effortlessly into existing motor-driven systems, offering a compact yet powerful solution for applications such as conveyors, mixers, pumps, extruders, and material handling equipment.

The eddy current drive technology at its core eliminates the abrupt engagement and disengagement associated with traditional clutch systems, providing **smooth, jitter-free operation** that extends the lifespan of connected machinery while reducing mechanical stress. The system s **hydraulic or eddy current clutch** generates controlled slip, enabling gradual torque buildup and preventing sudden loads that could damage equipment or compromise process stability. This makes it particularly well-suited for applications requiring **soft starts, load matching, or variable speed control** without the complexity of variable frequency drives (VFDs).

Constructed with **industrial-grade materials**, the AS-252004-0145 is built to withstand harsh environments, featuring **IP54-rated protection** against dust and water ingress, along with a sturdy, corrosion-resistant housing. The unit s **compact and modular design** allows for easy installation in tight spaces, while its **standardized mounting flanges** ensure compatibility with a wide range of motor and driven equipment configurations. Additionally, the system incorporates **thermal overload protection**, **current limiting**, and **adjustable slip control**, providing operators with precise tuning capabilities to optimize performance for specific workloads.

For enhanced operational flexibility, the AS-252004-0145 can be integrated with **remote control panels, PLCs, or automation systems**, enabling automated speed adjustments, sequence control, and energy-saving operation. Its **low-maintenance design** reduces downtime, as the eddy current clutch requires no lubrication and operates without physical wear parts, unlike traditional friction or belt-driven systems. Whether deployed in **food processing, plastics manufacturing, textile production, or material handling**, this drive delivers **consistent torque delivery, energy efficiency, and operational reliability**, making it a cost-effective alternative to more complex variable-speed solutions.

Ideal for applications where **gradual acceleration, load matching, or soft stopping** is essential, the Dynamatic AS-252004-0145 stands out as a **versatile, durable, and high-performance** motor control solution that bridges the gap between fixed-speed motors and advanced variable-frequency drives. Its **proven track record in industrial settings** ensures dependable performance over extended periods, while its **adjustable slip range** allows for fine-tuning to match the exact requirements of the driven equipment. With its combination of **simplicity, efficiency, and robustness**, this eddy current drive is a strategic investment for facilities seeking to enhance productivity, reduce energy consumption, and minimize mechanical wear in their operations.

### **Pros and Cons of buying a Dynamatic AS-252004-0145 (20HP Eddy Drive, 230/460V, 3-Phase)**

#### **Pros:**

1. **Efficiency and Energy Savings**

- Eddy current drives (like this model) provide variable speed control without the need for a traditional VFD (Variable Frequency Drive), reducing energy consumption compared to fixed-speed motors running at partial loads.

- They offer smoother acceleration and deceleration, reducing mechanical stress on connected equipment, which can extend the lifespan of belts, pulleys, and driven machinery.

2. **Simplicity and Reliability**

- Unlike VFDs, which require complex programming and maintenance, eddy current drives are mechanically simpler, with fewer electronic components prone to failure.

- They do not generate harmonics or electromagnetic interference (EMI), which can affect sensitive electronics in nearby equipment.

3. **Cost-Effective for Certain Applications**

- For applications where precise speed control is not critical but energy savings and smooth operation are desired, this drive can be more affordable than a VFD system.

- It eliminates the need for additional components like encoders or feedback devices often required with VFDs.

4. **Low Maintenance**

- Eddy current drives have no brushes or commutators, reducing wear and tear compared to DC motors or some AC motor control systems.

- They are typically sealed and require minimal lubrication, making them suitable for dusty or dirty environments.

5. **Compatibility with Existing Systems**

- Works well with standard AC induction motors, making it a retrofitable solution for upgrading older systems without requiring a complete motor replacement.

- Suitable for applications like conveyors, fans, pumps, and compressors where gradual speed adjustment is beneficial.

6. **Quiet Operation**

- Provides smoother speed transitions, reducing noise compared to abrupt starts or stops in systems without speed control.

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#### **Cons:**

1. **Limited Speed Range and Precision**

- Eddy current drives typically offer a narrower speed range (often 30-100% of full speed) compared to VFDs, which can provide finer control (e.g., 0-100%).

- They are not ideal for applications requiring very low speeds or precise speed regulation, such as some CNC machines or high-precision processes.

2. **Lower Efficiency at Very Low Speeds**

- While they save energy compared to fixed-speed motors, their efficiency drops significantly when operating at very low speeds (below 30% of full speed), where a VFD might perform better.

3. **Higher Initial Cost Than Fixed-Speed Motors**

- While cheaper than a full VFD system, the upfront cost of an eddy current drive is still higher than a standard motor without any speed control.

4. **Size and Installation Constraints**

- Eddy current drives are bulkier than VFDs and require additional space for installation. They may not fit in tight or retrofitted systems where space is limited.

- The drive must be mounted close to the motor to minimize torque loss through the transmission (e.g., belts or gears).

5. **Slip Loss and Heat Generation**

- Eddy current drives operate by inducing currents in a conductive rotor, which generates heat. This can reduce overall system efficiency, especially in high-load applications.

- Requires adequate cooling to maintain performance and longevity, which may add complexity to the installation.

6. **Limited to Specific Motor Types**

- Works best with squirrel-cage induction motors. If your system uses a different motor type (e.g., wound rotor or permanent magnet), compatibility may be an issue.

7. **No Regenerative Braking**

- Unlike some VFDs, eddy current drives cannot recover energy during deceleration, which may be a drawback for applications where energy recovery is beneficial (e.g., regenerative braking in some industrial processes).

8. **Dependence on Mechanical Transmission**

- If the drive is used with belts or gears, wear and tear in these components can affect overall system reliability over time.

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### **Conclusion:**

The **Dynamatic AS-252004-0145 Eddy Current Drive** is a solid choice for applications where you need **moderate speed control, energy savings, and simplicity** without the complexity of a VFD. It excels in scenarios like conveyors, fans, or pumps where gradual speed adjustment reduces mechanical stress and improves efficiency compared to fixed-speed operation. However, it is **not ideal for high-precision, low-speed, or energy-intensive applications** where a VFD would offer better performance.

If your primary goals are **cost-effectiveness, low maintenance, and smooth operation within a limited speed range**, this drive is a practical investment. On the other hand, if you require **fine-tuned speed control, very low speeds, or regenerative capabilities**, a VFD or a different motor control system would be more appropriate.

### **Recommendation:** - **Buy this drive if:**

- You operate equipment where gradual speed adjustment improves efficiency and reduces wear (e.g., conveyors, fans, or compressors).

- You want a **simple, low-maintenance** solution without the complexity of a VFD.

- Your budget allows for a mid-range speed control system that balances cost and performance.

- The application does not require precise low-speed operation.

- **Avoid this drive if:**

- You need **very low speeds or high precision** in speed control (e.g., CNC machines, high-precision processes).

- Your system requires **regenerative braking or energy recovery**.

- Space constraints make installation difficult, or your motor is not compatible (e.g., not a standard induction motor).

- You frequently operate at **very low speeds** (below 30% of full load), where efficiency drops significantly.

For most **general industrial applications** where energy savings and smooth operation are priorities but high precision is not critical, this eddy current drive is a **reliable and cost-effective solution**. However, always verify compatibility with your specific motor and load requirements before purchasing.

Details:

Size: length : 35 in. Insulation Class H, Design B, Code L. After the return period has ended, you can no longer product. height : 16 in.

Brand: Dynamatic. width : 25 in. Motor Was tested, clutch was not tested. Country of Manufacture: China.

Need it urgently. Will there be a dock or forklift. We choose the carrier.

LOCAL PICK-UP, Prefer to pick it up yourself. Next Day Second Air Services are available. Rating: CONT. All goods are so AS IS' and WITH ALL FAULTS meaning, without limitation, that.

Your phone number and business name. Condition: Used. Consignee: B.

Shows normal signs of usage.

part #: as2520040145 price

  • $2199.99

specifications oelemot:

  • brand: Dynamatic
  • mpn: As-252004-0145
  • part type: Drive
  • country of manufacture: China

offer oelemot:

  • options: Ship-to-home
  • quantity: 1
  • started: April 29, 2026
  • sold: 0
  • availability: In Stock

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  • policy: Returns Accepted
  • paid by: Buyer
  • time: 30 Days

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  • # reviews: 64820
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part type: drive, country of manufacture: china,
category: business & industrial > industrial automation motion controls > electric > general purpose, sku: 21786927024739772,
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