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Core Corresponding Models (Constant Torque Heavy-duty Type)
| Schneider Model | Recommended Chint Model | Key Parameter Matching Degree |
| ATV71HC28N4 | NVF2G-280/TS4 (Universal Heavy-duty Type) | • Rated Power: 280kW (Full Match) |
| • Voltage Class: Three-phase 380-415V (Compatible with 380-480V) | ||
| • Application Type: Constant Torque (Full Match, suitable for high-torque scenarios such as hoisting and lifting) | ||
| • Rated Output Current: 520A (Close to Schneider’s 550A, meeting most application requirements) | ||
| • Protection Class: IP20 (Full Match) | ||
| • Overload Capacity: 150% of rated current for 1 minute (Consistent with Schneider) | ||
| ATV71HC28N4 | NVFM3-280T/315P (High-performance Vector Type) | • Rated Power: 280kW (Full Match) |
| • Control Mode: Vector Control (Optional, consistent with Schneider’s vector control function) | ||
| • Rated Output Current: 550A (Full Match with Schneider) | ||
| • Application Type: Constant Torque (Designed specifically for heavy-duty applications) |
- Detailed Model Description and Selection Suggestions
- NVF2G-280/TS4 (Mainstream Replacement)
Product Positioning: Chint NVF2G series high-performance open-loop vector inverter, designed for constant torque loads. It can output 1.5 times the rated torque at 0.5Hz, meeting the needs of equipment such as cranes, elevators and conveyor belts.
Configuration Comparison:
| Configuration Item | Schneider ATV71HC28N4 | Chint NVF2G-280/TS4 |
| EMC Filter | Built-in Class B | Built-in standard EMC filter (Class B compatible) |
| Braking Unit | No built-in unit | No built-in unit (External braking resistor can be connected) |
| Operation Panel | Basic panel (No graphic terminal for Z version) | Basic operation panel (Graphic terminal optional) |
| Communication Function | Built-in Modbus | Built-in Modbus (CANopen and other protocols expandable) |
- NVFM3-280T/315P (High-performance Replacement)
Product Positioning: Chint NVFM3 series high-performance vector control inverter adopts advanced flux vector torque control technology, featuring higher control precision and wider speed regulation range, suitable for constant torque applications with higher control performance requirements.
Core Advantages: The rated output current is 550A, fully matching Schneider ATV71HC28N4. It can run continuously at 150% of the rated current for 60 seconds, meeting the requirements of heavy-duty starting and impact load applications.
- Other Optional Models (Special Scenarios)
NVF2G-280/PS4: Fan and pump type (light load), not recommended for constant torque heavy-duty scenarios, only suitable for variable torque loads such as fans and pumps.
NVFP5-280: Sensorless vector control type, suitable for occasions with high dynamic response requirements, and the price is slightly higher than that of the NVF2G series.
III. Replacement Precautions
- Current Matching: The rated current of NVF2G-280/TS4 is 520A, slightly lower than Schneider’s 550A. If the equipment often operates under working conditions close to 550A, it is recommended to select NVFM3-280T/315P (550A).
- Control Function: Both Chint NVF2G and NVFM3 series support V/F control and optional vector control. The control mode can be matched with Schneider’s via parameter setting.
- Braking System: Neither of the two Chint models is equipped with a built-in braking unit. If rapid braking is required, an external braking resistor needs to be configured additionally (consistent with Schneider).
- Communication Expansion: Chint inverters are standard-equipped with RS485 communication interfaces, and can support industrial networks such as Profibus and Ethernet through expansion cards, meeting system integration requirements.
- Installation Dimensions: Before installation, confirm the dimensions of the Chint inverter and reserve sufficient installation space and heat dissipation distance (it is recommended to leave 150mm on all four sides: top, bottom, left and right).
Preferred Replacement Model: Chint NVF2G-280/TS4 (Cost-effective, meeting most constant torque applications); High-performance Replacement Model: Chint NVFM3-280T/315P (Full current matching, better control performance). The selection should be comprehensively considered according to the actual load characteristics, current requirements and control precision requirements of the equipment.
