Product Overview
The DC Variable Speed Motor Z4-250-21-185kW-440V-IC06-B3 is a heavy-duty industrial DC drive solution designed for continuous operation in demanding environments. With excellent speed regulation, high overload capacity, and reliable performance, it is widely used in steel plants, mining, metallurgy, and heavy material handling systems requiring frequent starting and variable speed control.
Technical Specifications
|
Parameter |
Specification |
|
Product Model |
DC Variable Speed Motor Z4-250-21-185kw-440V-IC06-B3 |
|
Rated Power |
185 kW |
|
Rated Voltage |
440V |
|
Rated Speed |
1500 / 2200 rpm |
|
Rated Frequency |
50 Hz |
|
Full-Load Efficiency |
90.5% |
|
Duty Type |
Continuous Operation (S1) |
|
Cooling Method |
IC06 (Independent Forced Ventilation Blower) |
|
Protection Degree |
IP21 |
|
Mounting Type |
IM B3 (Foot-Mounted) |
|
Frame Material |
Rigid Cast Iron |
|
Speed Control Range |
Up to 1:200 |
|
Minimum Stable Speed |
20 rpm (Constant Torque Mode) |
|
Short-Time Overload Capacity |
2.0–3.0× Rated Torque |
|
Total Weight |
Approx. 960 kg |
|
Customization |
Available upon request (Electrical & Mechanical) |
Product Design Features
IC06 Independent Forced Cooling System
Unlike self-cooled motors whose cooling capacity declines as shaft speed drops, the IC06 system utilizes an external, independently powered blower fan mounted on the motor housing.
• Constant Airflow: Provides maximum thermal dissipation even during low-speed, high-torque operation.
• Thermal Protection: Prevents winding overheating and insulation degradation during prolonged variable speed cycles.
High-Reliability Armature & Commutator System
• Premium Copper Windings: Utilizes high-conductivity, oxygen-free copper conductors bonded with advanced Class F or H insulation materials.
• Precision Commutator Technology: Diamond-cut brush contact surface ensures minimal spark generation, low brush wear, and extended service intervals.
Reinforced Shaft and Frame Structure
• Cast Iron Housing: Absorbs heavy structural vibration and provides high mechanical rigidity under extreme torque stresses.
• Heavy-Duty Output Shaft: Forged steel shaft designed to endure severe radial loads and severe torsional shock loads.
Dedicated Industrial Terminal Box
• Separated Wiring Terminals: Isolated connections for armature, field, and thermal sensors ensure safe integration into modern DC thyristor/drive controllers.
• Robust Enclosure: IP-rated terminal box protects electrical connections against ambient dust and mechanical impacts.
Operating Conditions and Adaptability
Ambient Temperature: -15°C to +40°C (standard operational range).
Altitude: Up to 1,000 meters above sea level without derating.
Relative Humidity: Up to 90% non-condensing.
Environmental Adaptability: Can be customized with specialized anti-corrosion coatings, tropicalized insulation, or dust-proof sealing for aggressive industrial atmospheres (chemical, coastal, high-dust mining environments).
Typical Industrial Applications
Steel & Metallurgical Plants: Hot/cold rolling mills, continuous casters, coilers, wire rod mills, and heavy shears.
Mining & Aggregate Industry: Heavy-duty ore crushers, long-distance belt conveyors, underground mine hoists, and slurry pump drives.
Hoisting & Material Handling: Large overhead cranes, gantry cranes, container winches, and port unloading machinery.
Cement & General Heavy Machinery: Rotary kilns, raw grinding mills, heavy industrial extruders, and rubber mixing mills.
Manufacturing Process and Quality Control
Simo Motor enforces a strict end-to-end Quality Assurance System compliant with ISO 9001:
Raw Material Inspection: Ultrasonic non-destructive testing on shaft forgings and chemical/electrical testing of raw copper and laminated core sheets.
Precision Manufacturing: Automated coil winding, vacuum pressure impregnation (VPI) insulation process, and dynamic armature balancing.
Comprehensive Testing Protocol:
Insulation resistance and high-voltage withstand testing.
No-load and full-load performance running tests.
Commutator spark degree evaluation and vibration/noise level monitoring.
Final dimensional check before export packaging.
Certifications and International Standards
ISO 9001: Quality Management System Certification
CE Marking: Compliance with European Health, Safety, and Environmental Standards
EAC & GOST Certifications: Fully certified for industrial installation across Russia, Kazakhstan, and CIS region markets
CNAS Accredited Laboratory: In-house verification ensuring conformity to international IEC and NEMA standards
Customization Capability
Standard configurations can be adapted by Simo Motor's engineering team to meet specific site requirements:
Mechanical Adjustments
Custom shaft extensions (double-shaft, special keyways, tapered shafts) and modified mounting foot dimensions.
Electrical Modifications
Special voltage inputs (e.g., 500V, 600V), non-standard base speeds, or specialized field winding parameters.
Cooling & Protection Options
Top/side blower installation, addition of tachometers, encoders, brake units, or embedded PT100/PTC thermal sensors.
Engineering Support and After-Sales Service
Pre-Purchase Engineering: Technical consultation, motor selection verification, 2D outline drawings, 3D CAD files, and technical datasheets.
Installation & Commissioning: On-site or remote technical guidance for mechanical alignment, electrical wiring, and drive tuning.
Lifecycle Support: Fast-track spare parts availability (carbon brushes, commutators, bearings, cooling blowers) and comprehensive repair/troubleshooting manuals.
Frequently Asked Questions
Q: What is the standard lead time for this 185kW DC motor order?
A: Production typically takes 30 to 45 days, with expedited schedules available for urgent project demands.
Q: What warranty period and terms do you offer for bulk procurement?
A: We provide a 12-month warranty from commissioning or 18 months from shipping, backed by full component replacement coverage.
Q: Can you supply pre-installed encoders, tachometers, or PT100 thermal sensors?
A: Yes, feedback devices and thermal sensors can be factory-integrated to match your PLC control loop.
Q: How do you package the unit to ensure safe long-distance sea freight delivery?
A: Motors are wrapped in anti-rust vapor barrier foil and secured in heavy-duty, ISPM-15 compliant fumigated wooden crates.
Q: Can you provide third-party factory acceptance testing (FAT) before shipment?
A: Yes, we support third-party FAT inspections by agencies like SGS, BV, or TÜV prior to final loading.
Q: What payment terms and trade clauses do you accept for international buyers?
A: We support standard international trade terms including FOB, CIF, CFR, and payment via T/T or L/C.
Q: Do you provide quick-wear spare parts packages for routine maintenance?
A: Yes, we supply spare parts kits including original carbon brushes, brush holders, bearings, and air filters.
Q: Is this motor fully compatible with modern 6-pulse or 12-pulse digital DC thyristor drives?
A: Yes, the laminated magnetic core is designed to withstand dynamic current ripples from standard digital DC converters.
Q: What installation mounting orientations are available besides standard IM B3 foot-mounting?
A: Flange-mounted (B5/V1) or combination foot-and-flange (B35) configurations can be manufactured upon request.
Q: Can Simo Motor provide custom technical drawings for engineering tender submissions?
A: Yes, our design team delivers approval drawings and 3D CAD models within 48 hours for tender bidding.
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