Front view of 75 kW 3-phase 400V INVT GD350A variable frequency drive (VFD) inverter
Front view of 75 kW 3-phase 400V INVT GD350A variable frequency drive (VFD) inverter
Right side view of 75 kW INVT GD350A 3-phase 400V variable frequency drive inverter
Left side view of INVT GD350A 75 kW three-phase 400V variable frequency drive inverter
Top view of INVT GD350A 75 kW 3-phase 400V variable frequency drive inverter
Bottom view of 75 kW INVT GD350A three-phase 400V variable frequency drive inverter

INVT GD350A 75 kW VFD | 400 V 3-Phase Inverter (Dual-Rating)

CHF 2,495.00 excl. VAT, free Shipping

  • Dual power rating: 75 kW (Normal Duty) / 55 kW (Heavy Duty)

  • Rated voltage: 3-phase 400V AC

  • Powerful low-speed torque with advanced I/F control and motor auto-tuning

  • Robust overload capacity: up to 150% for 1 min, 180% for 10s, 200% for 1s

  • Integrated Safe Torque Off (STO) for enhanced operator safety

  • Multiple braking options including dynamic, DC, magnetic, and regenerative braking

  • High precision control: ±1 pulse positioning accuracy, speed control accuracy up to ±0.02%

  • Extensive connectivity: Modbus RTU, optional CAN, Profibus, Profinet, Bluetooth, and WiFi support

  • User-friendly LCD panel and flexible PLC programming (128kB memory)

  • Expandable with slots for I/O, communication, feedback, and PLC modules

  • Maintains operation during short power interruptions

  • Ideal for pumps, conveyors, HVAC, machine tools, packaging, and renewable energy systems

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SKU: GD350A-055G/075P-4 Category: Tag:

Description

The INVT GD350A 75 kW (400 V 3-phase) is engineered for high-demand industrial applications requiring precise speed and torque control.
With its dual-rating design — 75 kW for Normal Duty and 55 kW for Heavy Duty — this drive provides stable performance for variable-load processes.

Built on INVT’s advanced vector-control platform, the GD350A 75 kW delivers reliability, digital connectivity, and safety functions such as Safe Torque Off (STO).
It’s a robust choice for HVAC systems, pumping stations, conveyor lines, compressors, and machine-tool automation where high efficiency and flexibility are essential.

Key Specifications

  • Power Rating: 75 kW (Normal Duty) / 55 kW (Heavy Duty)

  • Rated Voltage: 3-Phase 400V AC

  • Control Modes: Advanced I/F Control & Constant Current Source for superior low-speed torque

Powerful Motor Control & Superior Torque Performance

The GD350A 75 kW delivers powerful and consistent torque down to very low speeds, perfect for applications requiring smooth startup and precise speed regulation such as heavy machinery, industrial pumps, and automated conveyor belts. Its motor auto-tuning function automatically optimizes control parameters for both asynchronous and synchronous motors, reducing skin effect issues and enhancing torque and speed accuracy for efficient operation.

Stability, Safety, and Fault Prevention

  • Voltage & Current Stability: Advanced control algorithms prevent overvoltage stalls during deceleration, minimize motor surges, and protect against overcurrent during acceleration—reducing fault triggers and ensuring continuous operation.

  • Integrated Safe Torque Off (STO): Provides immediate and reliable power cut-off for operator safety and machinery compliance.

  • Uninterrupted Operation: Maintains motor function during short power outages by utilizing stored energy, critical for process continuity in industries like textiles and chemical manufacturing.

  • Integrated DC Reactor for enhanced input current quality and reduced harmonic distortion

Robust Overload & Braking Capabilities

  • Supports overload currents up to 150% for 1 minute, 180% for 10 seconds, and 200% for 1 second, guaranteeing reliable performance under fluctuating loads.

  • Equipped with advanced braking options, including dynamic, DC, magnetic, short-circuit braking, and a built-in regenerative brake that recycles braking energy to improve system efficiency and reduce installation complexity.

Precision & Noise Reduction

  • Position Control Accuracy: ±1 pulse ensures exact actuator and motor positioning for CNC and automation.

  • Speed Control Accuracy: ±0.2% (SVC mode), ±0.02% (VC mode)

  • Starting Torque: Asynchronous motors achieve 0.25Hz/150%, synchronous motors up to 0Hz/200%.

  • Digital noise filtering technology guarantees stable and reliable communication signals even in electrically noisy industrial environments.

Intelligent Connectivity & IoT Features

  • Supports Modbus RTU communication by default, with optional expansion cards for CAN, Profibus DP, Profinet, and other industrial networks.

  • Optional Bluetooth and WiFi modules enable remote monitoring and control within a 30m range via the intuitive INVT-Workshop mobile app.

  • Multiple versatile I/O options including digital and analog inputs/outputs, high-speed pulse inputs, relay outputs, and more facilitate seamless integration into complex automation systems.

User-Friendly Operation & Expandability

  • Intuitive LCD control panel with multi-language support simplifies setup and daily operation.

  • Built-in 128kB PLC memory allows custom automation programming tailored to your application needs.

  • Three flexible expansion slots for additional I/O, communication, feedback, and PLC modules to future-proof your investment.

  • Supports USB data management and remote PC interface via USB-RS485 adapter, Ethernet, or cloud-based access with UDP/MQTT protocols.

Wide Industrial Application

Designed for broad usage in:

  • Industrial pumps and fans

  • HVAC and building automation

  • Conveyor systems and packaging machinery

  • Machine tools and textile manufacturing

  • Renewable energy systems including solar and wind power

the INVT GD350A 75kW guarantees efficient motor control, robust protection, and reliable operation, making it a trusted choice for industrial automation professionals.

Why Choose the INVT GD350A 75 kW Inverter?

With its powerful dual rating, advanced motor control features, intelligent safety systems, and flexible connectivity options, the INVT GD350A 75 kW stands out as a reliable, precise, and energy-efficient solution for your industrial drives. Boost your productivity, reduce downtime, and optimize your processes with this versatile and robust inverter.

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

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Additional information

Brake Chopper

Communication Protocols

Ethernet/IP, Profinet, CAN Master/Slave, etc. (extension card is needed), Modbus RTU & ASCII
Control Methods

SVPWM, SVC (Sensorless Vector Control), VC (Vector Control with Encoder)
Dual Rating Capability

Dual Rating
EMC Filter

Input Voltage

Motor Compatibility

Asynchronous Motors, Synchronous motors
Mounting Type

Wall and Flange Mounting
Safety Features

User Interface

Multi-function LCD keypad

Specification

P (Normal Duty) Motor Rated Power 75
Rated Current 150
G (Heavy Duty) Motor Rated Power 55
Rated Current 115
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 in G setting (Heavy Duty), 120% for 60s in P setting (Normal Duty)
Output Frequency 0 … 590 Hz
Control Inputs  Analog: 2 inputs (AI1: 0 … 10 V / 0(4) … 20 mA; AI2: -10 … 10 V), optionally expandable
Digital: 6 programmable inputs, including 2 high-speed inputs (50 kHz) for speed setpoint or actual value via incremental or pulse encoders, optionally expandable
Control Outputs  Analog: 1 programmable output 0 … 10 V / 0(4) … 20 mA, optionally expandable
Digital: 2 programmable outputs, one of them high-speed (50 kHz), potential-free, optionally expandable
Relays: 2 programmable changeover contacts (NO/NC), optionally expandable
Interfaces RS485 (terminals) as standard, up to 3 freely configurable option interfaces for communication modules, terminal expansions, feedbacks, and PLC cards
Brake Chopper Optional
EMC Filter Integrated IEC61800-3 C3; IEC61800-3 C1 & C2 optional
DC Reactor Integrated
Safety Functions Two-channel STO (Safe Torque Off) (IEC61800-5-2, SIL2, PL “d”)
Protection Rating IP20, optional IP55
Ambient Temperature -10°C … +50°C; power reduction required if ambient temperature exceeds +40°C, air cooling
Certification CE, TÜV
Dimensions / Weight 282 mm x 560 mm x 256 mm / 29 kg

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FAQ

1. What applications is the INVT GD350A 75 kW (400 V 3-phase) suitable for?
The INVT GD350A 75 kW is ideal for industrial motor control in pumps, fans, conveyors, HVAC systems, packaging machines, machine tools, textile production, and renewable energy projects where precise speed and torque control are essential.

2. What does the dual power rating (75 kW Normal Duty / 55 kW Heavy Duty) mean?
This means the GD350A can deliver 75 kW under normal operating conditions and 55 kW under heavy-duty or demanding loads, providing flexibility and reliability depending on your application.

3. Which voltage does the INVT GD350A 75 kW operate on?
It operates on a three-phase 400 V AC supply, standard in most industrial settings.

4. How does the motor auto-tuning feature work on the GD350A?
Motor auto-tuning automatically adjusts settings for both asynchronous and synchronous motors, optimizing torque, speed accuracy, efficiency, and minimizing mechanical wear.

5. What safety features are integrated in the GD350A 75 kW?
The drive includes Safe Torque Off (STO), overcurrent and overvoltage protection, overload endurance, and advanced fault prevention to ensure operator safety and protect equipment.

6. Can the GD350A 75 kW handle short power interruptions without stopping the motor?
Yes, the drive can maintain motor operation during brief power interruptions, preventing process downtime in critical industrial applications.

7. What types of braking are supported by the GD350A 75 kW?
It supports dynamic braking, DC braking, magnetic braking, short-circuit braking, and has a built-in regenerative brake to recover energy during deceleration.

8. Is the GD350A 75 kW compatible with industrial communication protocols?
Yes, it supports Modbus RTU by default, with optional communication modules for CAN, Profibus DP, and Profinet, enabling seamless integration into automation networks.

9. Can I monitor or control the GD350A 75 kW remotely?
Yes, with optional Bluetooth or Wi-Fi modules, the drive can be monitored and configured remotely via the INVT-Workshop mobile app within a 30 m range.

10. How easy is it to program and customize the GD350A 75 kW?
It features an intuitive LCD control panel, 128 kB built-in PLC memory for custom automation, and expandable slots for I/O, communication, and feedback modules.

11. What overload capability does the GD350A 75 kW offer?
It supports up to 150 % overload for 1 minute, 180 % for 10 seconds, and 200 % for 1 second, ensuring reliable operation during temporary peak loads.

12. Which industries benefit most from the GD350A 75 kW?
Manufacturing, chemical processing, water treatment, HVAC, packaging, textile production, and renewable energy sectors gain improved efficiency, control, and safety using this drive.

Related Documents

Documentation for INVT GD350A 3-Phase 400V 75 kW:

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