Front view of INVT GD20 75kW VFD – 400V 3-phase inverter for industrial motor control

INVT GD20-EU 75 kW Frequency Inverter (400 V Three-Phase VFD)

CHF 2,495.00 excl. VAT, free Shipping

Power Rating: 75 kW, 400V, Three Phase
Control Modes: V/f control & Sensorless Vector Control (SVC)
Startup Torque: 150% at 0.5 Hz (SVC) – high torque for heavy loads
Speed Accuracy: ±0.2% with SVC – ideal for precision control
Overload Capacity: 150% (1 min), 180% (10s), 200% (1s)
Safety Features: Integrated STO (Safe Torque Off) & braking unit
EMC Compliant: Built-in C3 filter for reduced interference
Flexible I/O: 2 AI, 1 AO, 4 DI, 1 HSI, 1 DO, 2 relay outputs
Communication: RS485 with Modbus RTU/ASCII support
Energy Efficiency: Supports common DC bus & internal power monitoring
Applications: HVAC, pumps, conveyors, compressors, industrial machines

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SKU: INVT.GD20.015G.4.EU Category: 400V Three-Phase VFDs – Industrial Frequency Inverters (0.75kW to 500kW) Tag: 400V

Description

INVT GD20-EU 75 kW (400 V Three-Phase) Frequency Inverter delivers precise, energy-efficient control for industrial and OEM motor applications. Featuring both V/f and Sensorless Vector Control (SVC), the GD20-EU 75 kW provides stable torque even at low speeds and seamless integration with automation systems.

Its robust design and built-in safety functions make it ideal for HVAC systems, pumping stations, compressors, conveyors, and general machinery requiring reliable 400 V three-phase drive performance.

Key Specifications

Motor Rated Power: 75 kW
Input Voltage: 400V AC, Three Phase (±10%)
Control Modes: V/f Control, Sensorless Vector Control (SVC)
Speed Accuracy: ±0.2% (SVC Mode)
Starting Torque: 150% at 0.5 Hz (SVC)
Overload Capacity:
– 150% for 1 minute
– 180% for 10 seconds
– 200% for 1 second

Powerful & Versatile Motor Control

The INVT GD20-EU 75 kW adapts easily to varying load profiles, offering:

Multi-step speed control (up to 16 levels)
Programmable V/f curves: linear, multi-dot, and customized options
Integrated PID controller for pressure, flow, and temperature regulation
Simple PLC function for time-based automation of motor speed and direction

This flexibility makes it a reliable solution for both constant and variable torque applications.

Industrial-Grade Safety & Protection

STO (Safe Torque Off): Provides immediate torque cutoff for enhanced safety
Built-in EMC Filter (C3): Reduces electromagnetic interference
Integrated Braking Unit: Enables safe and controlled deceleration
Comprehensive Fault Protection: Against overvoltage, undervoltage, overload, overheating, and overcurrent

Advanced Connectivity & I/O

Communication: RS485 with Modbus RTU/ASCII protocol
External LED Keypad: Supports parameter copy and remote control
Analog I/O:
– 2 Analog Inputs (0–10V / 0–20mA)
– 1 Analog Output (0–10V or 0–20mA)
Digital I/O:
– 4 Digital Inputs + 1 High-Speed Input (up to 50 kHz)
– 1 Digital Output + 2 Programmable Relay Outputs

Compatible with INVT Workshop software and USB-RS485 interface for easy configuration and system monitoring.

Energy Efficiency & System Integration

Common DC Bus Support: Enables energy sharing among multiple drives
Built-in Energy Monitoring: Tracks power consumption without external meters
Helps reduce energy costs in continuous or load-variable operations

Wide Application Compatibility

The GD20-EU 75 kW is ideal for:

HVAC Systems: Fans, compressors, and chillers
Pumping Applications: Booster, irrigation, and process pumps
Material Handling: Conveyors, hoists, lifts
Processing Equipment: Mixers, extruders, grinders, saws
Water & Wastewater: Blowers, agitators, dosing pumps
Manufacturing Industries: Textile, plastic, ceramic, packaging, and cable production

Why Choose the INVT GD20 75kW?

Precision control with advanced motor autotuning (static and dynamic)
Reliable high torque at startup and low-speed operations
CE compliant with quality certifications for industrial environments
Simplified commissioning with user-friendly keypad and software tools
Engineered for long service life under tough conditions

See our full range of 400 V variable frequency drives, covering all power ratings from 0.75 to 500 kW.

Additional information

Brake Chopper	Built-in Brake Chopper
Communication Protocols	Modbus RTU & ASCII
Control Methods	SVPWM, SVC (Sensorless Vector Control)
Dual Rating Capability	Single Rating
EMC Filter	Integrated C3 Filter
Input Voltage	Thress Phase 400V
Motor Compatibility	Asynchronous Motors
Mounting Type	Wall and Flange Mounting
Safety Features	Integrated safety function-STO
User Interface	LED Keypad

Specification

Motor Rated Power (kW)	75
Rated Current (A)	150
Line Voltage, Frequency	AC 3-ph. 380 V … 440 V (-15% … +10%), 50 Hz/60 Hz (± 5%)
Output Voltage	3-ph. 0 V … 480 V (max. input voltage)
Overload Capacity	150% for 60s, 180% for 10s; 200% for 1s
Output Frequency	0 … 590 Hz
Control Inputs	Analog: 2 Inputs (AI2: 0 … 10 V / 0(4) … 20 mA; AI3: -10 … 10 V)
Control Inputs	Digital: 5 programmable inputs, including 1 High-Speed Input (50 kHz)
Control Outputs	Analog: 2 Outputs each 0 … 10V / 0 (4) … 20 mA
	Digital: 1 potential-free digital output
	2 freely programmable relays with changeover contacts
Interfaces	RS485 on terminals (Modbus RTU & ASCII)
Brake Chopper	Integrated
EMC Filter	Integrated C3 filter, optional C2 filter (comply with IEC61800-3 C2, IEC61800-3 C3 requirements)
DC Reactor	Integrated
Safety Functions	2-channel STO, SIL3, PL “e”
Protection Rating	IP20
Operating Temperature	-10°C … +50°C; performance reduction required if ambient temperature exceeds +40°C, fan cooling
Certifications	CE, TÜV SÜD
Dimensions (mm) * Width x Height x Depth / Weight	282 mm x 560 mm x 238 mm / 25 kg

FAQ

1. Is the GD20-EU 75 kW model suitable for HVAC systems?

Yes. The INVT GD20-EU 75 kW drive integrates PID and Sensorless Vector Control (SVC) for precise air- and water-flow regulation in HVAC installations such as fans, blowers, and chillers.

2. What motor types can the GD20-EU 75 kW control?

This drive supports asynchronous (induction) motors, both standard and high-efficiency IE3/IE4 types. It operates in V/f or SVC mode, adapting automatically to the connected motor’s load characteristics.

3. What protection functions does this model include?

The GD20-EU 75 kW features built-in overcurrent, over/undervoltage, and over-temperature protection, plus Safe Torque Off (STO) for safe maintenance and emergency stops.

4. How does the integrated braking unit function?

The integrated braking chopper enables fast, controlled deceleration by dissipating regenerative energy — ideal for high-inertia systems like centrifuges or hoists.
(External resistors may be added if heavy dynamic braking is required.)

5. Can it communicate with PLC or SCADA systems?

Yes. All GD20-EU models include an RS485 interface supporting Modbus RTU and ASCII protocols for seamless integration with PLCs, HMIs, or SCADA networks.

6. What input voltage range does the GD20-EU 75 kW support?

It operates on a 3-phase 380 – 440 V AC supply (±10 %), fully compatible with standard European 400 V networks.

7. Does the drive include energy-saving or monitoring functions?

Yes. It supports DC-bus energy sharing and real-time monitoring of power and torque, helping optimize system efficiency and reduce operational costs.

8. How is the GD20-EU 75 kW configured?

Setup can be done via the detachable LED keypad or through INVT Workshop software using a USB-RS485 link. Auto-tuning (static and dynamic) simplifies parameter optimization for each motor.

9. Is the GD20-EU 75 kW certified for industrial use?

Yes. The model meets CE, UL/cUL, and TÜV SÜD standards for electrical safety and EMC compliance (C3 filter integrated).

10. Where can I find other 400 V models?

For additional three-phase 400 V drives from 0.75 kW to 110 kW, visit the
👉 400 V frequency inverter overview page.