Description
The Schneider Electric Altivar 71 series variable speed drive (Model: ATV71HD18N4) is a premium high-performance 3-phase AC drive designed for controlling heavy-duty 3-phase asynchronous and synchronous motors rated up to 18.5kW (25HP). Operating across a 380V to 480V AC 3-phase supply, it regulates speed, dynamic torque response, and soft acceleration/deceleration by converting line utility power into high-precision variable frequency and voltage output.
Tailored for high-torque applications, automation system integrators, and plant maintenance engineers across Bangladesh, the ATV71HD18N4 delivers exceptional motor torque regulation across complex industrial machinery. Equipped with an advanced graphic display terminal, integrated EMC filtering, and robust power electronics, it guarantees uncompromised operational reliability and energy efficiency in high-demand Bangladeshi industrial environments.
Key Features
- High-Torque Performance: Engineered for heavy-duty torque application control, delivering up to 220% transient over-torque capacity for severe starting conditions.
- Multilingual Graphic Display Terminal: Features a removable graphic screen with text-based navigation, parameter curves, and comprehensive fault diagnostic displays.
- Embedded Safety Function: Features integrated Power Removal / Safe Torque Off (STO) certified to functional safety standards to prevent unintended motor restarts without external contactors.
- Advanced Vector Control: Supports open-loop and closed-loop flux vector control (FVC with encoder feedback), standard V/f, and permanent magnet synchronous motor control algorithms.
- Expandable Communication & I/O: Standard Modbus RTU and CANopen ports onboard, expandable via optional option cards for Profibus DP, DeviceNet, Ethernet/IP, and extended I/O terminals.
Technical Advantages
- High Efficiency Operation: Delivers exceptional operational efficiency (~97%) under full heavy-duty loads, minimizing internal heat buildup inside control cabinets.
- Durable Construction: Built with heavy-duty aluminum cooling heatsinks and forced convective air ventilation for reliable long-term performance under high thermal loads.
- Comprehensive Electrical Protection: Robust protection against motor phase-to-phase short circuits, mains overvoltage/undervoltage, output phase loss, dynamic overcurrent, and thermal overload.
- Energy Saving Optimization: Automatically manages motor flux excitation based on real-time load demand to minimize overall electricity consumption.
- Simplified Maintenance: Removable terminal blocks, fault logs, and parameter backup features via the graphic keypad allow quick servicing and minimal machine downtime.
Applications
- Industrial Manufacturing: High-capacity material handling conveyors, overhead cranes, hoists, lifts, crushers, and heavy packaging lines.
- Factory Automation: Textile dyeing machinery, spinning/weaving machines, plastic extruders, wire drawing units, mixers, and agitators.
- Commercial & Heavy HVAC: Large industrial centrifugal exhaust blowers, cooling tower fans, and high-pressure water supply pumps.
- Project Installation: Custom OEM panel builds, sub-distribution control stations, and plant modernization projects across Dhaka, Chittagong, Gazipur, and all over Bangladesh.
Why Choose This Product?
- Unmatched Reliability: Premium heavy-duty engineering by Schneider Electric, conforming to strict global standards (IEC/EN 61800-5-1, CE, UL, CSA, GOST).
- Superior Torque Control: Exceptional low-speed torque delivery and smooth speed regulation ensure uninterrupted production under high dynamic load shifts.
- Cost Effectiveness: Soft starting eliminates severe current surges and dynamic mechanical stress, significantly extending motor and mechanical transmission service life.
- After-Sales Value: Broadly supported in Bangladesh with accessible spare parts, standardized programming structures, and local engineering expertise.
Technical Specification Table
| Specification |
Details |
| Model |
ATV71HD18N4 |
| Brand |
Schneider Electric |
| Rated Power |
18.5 kW (25 HP) Heavy Duty |
| Voltage |
380…480 V AC (-15% to +10%), 3-Phase |
| Current |
41 A (Heavy Duty at 380-480V) |
| Frequency |
50/60 Hz Input; 0.1 to 500 Hz Output |
| Efficiency |
~97% (Power Loss ~552.0 W at rated load) |
| Protection |
IP20 / IP31 (with kit), Integrated Class A EMC Filter |
| Dimension |
240.0 mm (W) x 420.0 mm (H) x 236.0 mm (D) |
| Weight |
22.00 kg (Net) |
| Operating Temperature |
-10°C to 50°C (without derating), up to 60°C (with derating) |
| Warranty |
Standard Manufacturer Warranty |
Features List
✓ 18.5kW (25HP) heavy-duty continuous power rating for 380–480V 3-phase motors
✓ Removable multilingual graphic display terminal for easy monitoring and setup
✓ Integrated Power Removal / Safe Torque Off (STO) functional safety standard
✓ Embedded Class A EMC filter to suppress electromagnetic interference
✓ Onboard Modbus RTU and CANopen communication protocols
✓ Heavy-duty cooling architecture supporting operation up to 50°C ambient temperature
Benefits For Customers
- Reduces Electricity Expenses: Optimizes motor drive efficiency and minimizes active electrical power demand during partial load and variable speed operation.
- Improves Operational Reliability: Prevents sudden torque shocks on drive shafts, gearboxes, and couplings, extending machine reliability.
- Saves Maintenance Cost: Reduces thermal wear on motor windings and mechanical stress on transmission components, lowering equipment maintenance expenses.
- Suitable for Bangladesh Environment: Handles high ambient heat up to 50°C and voltage fluctuations common in Bangladeshi industrial power networks.
Installation & Maintenance Guide
Installation Requirements:
- Mounting Position: Install vertically on a flat, heat-resistant, heavy-duty mounting plate inside a ventilated electrical control cabinet capable of supporting a 22kg drive unit.
- Clearance Spacing: Maintain a minimum vertical clearance of 100mm above and below the drive to ensure free airflow through the heatsink cooling channels.
- Power Wiring: Wire 380–480V 3-phase incoming utility supply (R/L1, S/L2, T/L3) through a correctly rated molded case circuit breaker (MCCB) and semiconductor fuses. Connect output motor terminals (U/T1, V/T2, W/T3) using shielded 4-core copper power cables.
- Earthing/Grounding: Ensure a direct low-impedance ground connection between the drive PE ground lug, panel backplate, and motor frame.
Maintenance Tips:
- Dust Management: Blow clean, dry compressed air (max 2 bar) through the heatsink cooling fins every 3–6 months to prevent thermal clogging.
- Cooling Fan Inspection: Check that internal cooling fans spin freely without unusual acoustic noise or vibration during periodic maintenance.
- Terminal Verification: Retighten all main power and control terminals periodically to prevent high-resistance thermal joints caused by machinery vibration.
Safety Instructions:
- Capacitor Discharge: Disconnect all main power sources and wait at least 15 minutes before touching electrical terminals to allow high-voltage DC bus capacitors to fully discharge.
- Insulation Testing: Never execute high-voltage Megger insulation testing directly on VFD power terminals; disconnect motor leads completely prior to testing motor insulation.
Frequently Asked Questions (FAQ)
Q: What is the price of Schneider ATV71HD18N4 18.5kW VFD in Bangladesh?
A: The price of the Schneider ATV71HD18N4 18.5kW 25HP VFD in Bangladesh depends on import duties, stock availability, and exchange rates. Check live pricing listed above on loopshop.com.bd or contact our sales team for an official quotation.
Q: Where can I buy original Schneider ATV71HD18N4 VFD in Dhaka, Bangladesh?
A: You can purchase authentic Schneider Electric ATV71HD18N4 VFDs online directly at loopshop.com.bd with verified product authenticity, invoice, and fast delivery across Dhaka and all over Bangladesh.
Q: Can this VFD run on a single-phase 220V electricity line?
A: No, the ATV71HD18N4 is strictly designed for 380–480V 3-phase AC power input. It cannot be powered from a single-phase 220V line.
Q: What warranty does this product have on loopshop.com.bd?
A: Standard manufacturer line warranty or seller warranty terms apply at the time of purchase. Please check with loopshop.com.bd customer service to verify current warranty coverage.
Q: Is the Schneider ATV71HD18N4 suitable for Bangladesh climate conditions?
A: Yes, it is engineered with robust industrial components and forced air cooling rated to operate up to 50°C ambient temperatures without derating, making it ideal for Bangladeshi factory conditions.
Q: How do I adjust motor speed on this drive?
A: Speed can be controlled using the removable graphic display terminal wheel, an external 0–10V potentiometer, 4–20mA process signals, multi-speed digital inputs, or Modbus RTU / CANopen communication from a PLC or HMI.
Q: What is the rated output current of ATV71HD18N4?
A: The drive provides a continuous nominal heavy-duty output current rating of 41.0 Amperes under 380–480V 3-phase AC operation.
Q: Does the ATV71HD18N4 include an integrated EMC filter?
A: Yes, it comes equipped with an integrated Class A EMC filter to suppress radio-frequency interference and line noise.
Q: How to install this product safely in an electrical panel?
A: Mount vertically inside a ventilated cabinet, maintaining clear top and bottom airflow. Wire 3-phase main power to R/S/T and motor wires to U/V/W according to Schneider wiring schematics while securing ground grounding.
Q: What heavy applications are best suited for this 18.5kW drive?
A: It is ideal for high-demand industrial machinery including textile equipment, hoists, overhead cranes, plastic extruders, heavy conveyors, and industrial pumps and fans.
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