ZSN4 Series DC Motor
Overview
The ZSN4 Series DC Motor is a dedicated DC motor family for cement rotary kiln main transmission, developed from the Z4 platform for kiln-specific duty conditions.
Key Features
- Octagonal structure with high stator space utilization
- Designed for severe pulsating current and load fluctuation conditions
- Starting torque can reach about 2.5x rated torque in described kiln duty design
- Class F insulation with stable thermal performance
- Suitable for dusty environments with duct ventilation arrangements
Typical Technical Scope
- Typical armature voltage in sample: 440 V (220 V derivative available)
- Field voltage reference: 180 V (other field voltages negotiable)
- Low-speed constant-torque operation can be maintained under armature-voltage control
- Series technical data includes models from frame 225 up to 355 in sample
Cooling and Protection
- Cooling methods include IC17 and IC37 in sample sections
- Protection grades include IP23S and IP44-IP54 depending on cooling/enclosure configuration
- Dust-tolerant ventilation and sealed options are emphasized for kiln environments
Mounting and Integration
- Typical mounting mode: horizontal foot mounting IMB3
- Single-shaft and double-shaft arrangements are available
- Tachogenerator can be installed on non-drive side for speed feedback
Typical Applications
- Cement rotary kiln main drive
- Heavy continuous process lines requiring stable low-speed torque
- Retrofit and replacement in existing kiln transmission systems
Frame and Model Coverage
- Typical sample model groups include: ZSN4-225, ZSN4-250, ZSN4-280, ZSN4-315, ZSN4-355
- Compensating winding is present in most frames, with frame-specific winding notes in sample
Replacement and Retrofit
ZSN4 is typically applied in cement kiln retrofit projects where legacy DC main drives need better low-speed stability, overload support, and high-dust reliability.
FAQ
What is this series mainly used for?
It is designed for industrial variable-speed transmission where reliability, stable torque response, and long-duty operation are required.
Can this series be configured for project-specific voltage/cooling/mounting requirements?
Yes. Electrical ratings, cooling structure, and mechanical interface can be configured according to project duty and site constraints.
Will detailed frame pages be available?
Yes. Frame-level pages can be generated in a second-stage run to provide deeper sizing, model, and application details.