The INVT GD20-030G-4 is a 30kW high-power general-purpose frequency inverter from INVT's GD20 series, engineered for heavy-duty industrial drive applications requiring reliable high-torque performance. Designed for three-phase 380V input, this robust drive delivers 30kW of motor control with V/F and sensorless vector control for large induction motors. With built-in DC reactor for harmonic suppression, integrated braking chopper, PID control, Modbus RTU communication, independent air duct cooling, and comprehensive protection functions, it is the powerful and cost-effective drive solution for large pumps, industrial fans, air compressors, extruders, heavy conveyors, crushers, mixers, and demanding industrial automation applications.
| Model | GD20-030G-4 |
|---|---|
| Series | INVT GD20 General-Purpose Frequency Inverter |
| Rated Power | 30 kW (40 HP) — G-Type Constant Torque |
| Input Voltage | 3-Phase 380–440V AC, 50/60Hz |
| Rated Input Current | 60 A |
| Rated Output Current | 60 A (constant torque) |
| Output Frequency Range | 0.00–400.00 Hz |
| Frequency Resolution | 0.01 Hz (digital), 0.1% max frequency (analog) |
| Control Mode | V/F (linear, quadratic, multi-point), Sensorless Vector Control (SVC) |
| Starting Torque | SVC: 150% at 0.5Hz |
| Speed Control Range | SVC: 1:100 |
| Speed Control Accuracy | SVC: ±0.5% rated speed |
| Overload Capacity | G-Type: 150% rated current for 60s; 180% for 3s |
| Motor Types Supported | Three-phase induction motor (IM) |
| DC Reactor | Built-in DC reactor (standard) |
| Braking Unit | Built-in braking chopper (external braking resistor required for high-power braking) |
| Digital Inputs | 6 * multi-function DI (PNP/NPN selectable) |
| Analog Inputs | 2 * 0–10V / 4–20mA |
| Digital Outputs | 1 * relay output, 1 * transistor output |
| Analog Outputs | 1 * 0–10V / 4–20mA |
| Communication | RS485 Modbus RTU (standard) |
| Built-in Functions | PID controller (with sleep/wake), multi-speed (up to 16), S-curve, flying start, DC braking, slip compensation, AVR, torque boost, wobble frequency, simple PLC, timer control, parameter copy |
| Protection Features | Overcurrent, overvoltage, undervoltage, overload, overheating, input phase loss, output phase loss, short-circuit, PTC motor protection |
| Enclosure Rating | IP20 |
| Cooling Method | Forced air cooling (independent air duct, high-capacity DC fans) |
| Ambient Temperature | -10°C to +50°C (derating above 40°C) |
| Humidity | ≤90% RH, non-condensing |
| Altitude | ≤1000m (derating above 1000m) |
| Dimensions (W*H*D) | Approx. 280 * 540 * 300 mm |
| Net Weight | Approx. 28 kg |
| Certifications | CE, RoHS, ISO 9001 |