INVT GD20-018G-4 Industrial Heavy-Duty Drive High-Power General VFD

The INVT GD20-018G-4 is an 18.5kW high-power general-purpose frequency inverter from INVT's GD20 series, engineered for heavy-duty industrial drive applications requiring reliable performance and high output capacity. Designed for three-phase 380V power input, this robust drive delivers stable V/F and sensorless vector control for medium to large induction motors. With built-in DC reactor, integrated braking chopper, PID control, Modbus RTU communication, and comprehensive protection functions including independent air duct cooling, it is the practical drive solution for large pumps, industrial fans, air compressors, extruders, mixers, conveyors, textile machinery, and general industrial automation where dependable high-power motor control at a competitive cost is essential.

• Industrial Heavy-Duty Drive — 18.5kW G-type rating with 150% overload for 60s and 180% for 3s; built-in DC reactor for harmonic suppression and power factor improvement in continuous-duty industrial applications
• High-Power General VFD — Proven GD20 platform scaled to 18.5kW with reliable V/F and sensorless vector control (SVC), delivering stable speed regulation and robust output for demanding industrial machinery
• Robust Motor Controller — SVC mode provides 150% starting torque at 0.5Hz with 1:100 speed control range and ±0.5% speed accuracy, suitable for heavy-starting loads including crushers, mixers, and extruders
• Built-in DC Reactor — Integrated DC reactor as standard, reducing input current harmonics by up to 30%, improving input power factor, and protecting the drive from mains transients for enhanced system reliability
• Advanced Process Control — Integrated PID controller with sleep/wake function for closed-loop pressure, flow, and temperature regulation; multi-speed and simple PLC for standalone automation sequences
• Independent Air Duct Design — Separate cooling air path isolates power electronics from control circuitry, with high-capacity DC fans and coated PCBA ensuring reliable operation in dusty factory environments
• Comprehensive Protection Suite — Overcurrent, overvoltage, undervoltage, overload, overheating, input/output phase loss, short-circuit, PTC motor protection, and automatic fault recording for rapid troubleshooting
• Easy Integration & Commissioning — RS485 Modbus RTU standard, intuitive keypad with parameter copy, motor auto-tuning, and application presets for quick startup across pumps, fans, compressors, and conveyors