ZCDD Series Low-Voltage Low-Speed High-Torque Direct-Drive Permanent Magnet Synchronous Motor

ZCDD Series Low-Voltage Low-Speed High-Torque Direct-Drive Permanent Magnet Synchronous Motor

The ZCDD Series high-torque, low-speed direct-drive permanent magnet motors are specifically engineered for the demanding of the direct-driven requirements for the heavy-duty equipment. Utilizing the low-voltage Permanent Magnet Synchronous (PMS) technology, this series combines high efficiency with exceptional torque output. Through the precision electro-magnetic and the structural optimization, it achieves the smoothly and consistently torque output at rated low speeds, driving loads directly. This completely eliminates the efficiency losses and the maintenance demands associated with traditional mechanical transmission components like the gearboxes. Paired with high-performance vector control VFD, it achieves the wide-range, stepless speed regulation and the precise torque control, offering customers one highly efficient, low-maintenance and integrated driven solution

The ZCDD Series is engineered for the heavy-duty industrial direct-driven applications. By incorporating the permanent magnet advanced technology and optimized direct-driven structure, it achieves exceptional torque at low speeds, eliminating the need for the gearboxes. This enables the highly efficient, precise and the reliable system operation, making it ideally suited for the demanding equipment such as the conveyors, mixers and the rotary driven

Key Features

The ZCDD Series high-torque, low-speed direct-drive permanent magnet motors are engineered specifically for the low-speed, high-torque direct-drive demands of heavy-duty equipment. Utilizing permanent magnet synchronous direct-drive technology, this series delivers smooth, continuous torque at rated low speeds to drive loads directly, completely eliminating mechanical transmission components like gearboxes. Integrated with high-performance vector control variable frequency drives (VFDs), it achieves wide-range, stepless speed regulation and precise torque control, offering customers a highly efficient, integrated, and virtually maintenance-free drive solution.
Excellent Energy Efficiency:​ Permanent magnet synchronous technology delivers ultra-high operational efficiency, significantly reducing lifecycle energy consumption and readily meeting IE4/IE5 efficiency standards.
Compact & Direct Drive:​ Provides high-torque output at low speeds. Its direct installation onto the load shaft saves space, simplifies equipment structure, and reduces installation and foundation costs.
Precise Control:​ When paired with a VFD, it enables accurate speed, position, and torque control. Its wide speed range and smooth start-stop characteristics enhance process performance.
Reliable & Durable:​ Features a robust, totally enclosed design with critical components made from high-strength materials and long-life bearings. With no brushes or slip rings, maintenance requirements are minimal.
Smooth & Quiet Operation:​ Optimized electromagnetic and mechanical design, combined with the direct-drive principle, significantly reduces operational vibration and noise, improving the working environment.

Technical Specifications

Power Range:​ Covering 55 kW to 1500 kW, the ZCDD Series employs a modular design with logical power gradation to meet the direct-drive requirements of industrial equipment across various scales. With a broad power range suitable for heavy-duty machinery such as mine hoists, port cranes, and large mixers, it allows for precise model selection based on actual load demands.
Rated Voltage:​ Supports multiple voltage levels including 380V/400V/690V (50Hz) and 440V/480V (60Hz), complying with mainstream low-voltage power supply standards domestically and internationally. It can be directly connected to existing low-voltage grids without requiring additional step-up equipment. Flexible voltage selection enables matching to on-site power conditions, reducing system modification costs.
Efficiency Class:​ Fully meets IE4/IE5 efficiency standards. Utilizing high-performance rare-earth permanent magnet materials and an optimized electromagnetic design, it maintains ultra-high efficiency across a wide frequency range. Compared to traditional asynchronous motor plus gearbox systems, it delivers significant comprehensive efficiency improvement, achieving 20% to 40% energy savings.
Power Factor:​ The power factor at rated load is ≥0.95, offering excellent grid compatibility that significantly reduces system reactive power loss. Through optimized variable frequency control, the power factor can automatically adjust according to load conditions, minimizing the need for reactive power compensation devices.
Protection Level:​ Standard protection is IP55, with IP65 available as an option. The totally enclosed design effectively prevents ingress of dust and water jets, adapting to harsh industrial environments such as mining, ports, and building materials. The welded steel plate housing provides high structural strength and excellent sealing, ensuring long-term reliable operation under complex working conditions.

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Motor Selection Guide and FAQ

Motor Selection Guide
1. Define Basic Parameters
Power & Speed:​ 
Determine the required rated power based on load characteristics and define the motor pole count and speed range according to your equipment’s operational speed.
Voltage & Frequency:​
Confirm your power supply standard (e.g., 380V/50Hz, 480V/60Hz). Custom designs are available for special voltage requirements.
Mounting Type:​
Specify IEC standard mounting (e.g., B3, B5, B14). Custom the flanges & bases are also supported.
2. Consider Operating Environment
Protection Rating (IP):​
IP55 for standard environments. IP65 is recommended for damp or dusty conditions. Hazardous areas require Ex D/Ex E certifications.
Insulation Class:​
Class F (155°C) for general use. Class H (180°C) insulation is advised for high-temperature environments.
Cooling Method:​
Self-ventilated (IC411) for standard applications. Forced air or water cooling is available for enclosed spaces or high-power-density scenarios.
3. Match Load Characteristics
Starting Torque:​
Consider starting torque for fan/pump loads. Verify locked-rotor torque for conveying equipment.
Duty Cycle:​
Standard motors are suitable for continuous operation (S1). Frequent start-stop cycles (S5) require reinforced bearings and insulation.
Efficiency Requirement:​
Select IE3/IE4/IE5 efficiency classes based on annual operating hours. Ultra-premium efficiency (IE5) motors offer the lowest total cost of ownership for long-running applications.
Get Your Custom Solution & Fast Quote. Our Engineers Are Ready to Help.
Contact Us for the Precise Solution
Provide your equipment parameters, load profile, environmental conditions, and application details.
Receive the complimentary motor selection calculation, the energy efficiency analysis report, and the 3D model.
We support sample testing and operational simulation for validation.

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