Front view of 500 kW three-phase 400V inverter INVT GD350A
Front view of 500 kW three-phase 400V inverter INVT GD350A
Right side view of 500 kW 400V three-phase inverter INVT GD350A
Left side view of INVT GD350A 500 kW three-phase 400V inverter
Top view of 500 kW INVT GD350A three-phase 400V inverter
Bottom view of 500 kW three-phase 400V inverter INVT GD350A

INVT GD350A 500 kW VFD | 400 V 3-Phase Inverter (Dual-Rating)

CHF 11,995.00 excl. VAT, free Shipping

  • Dual power rating: 500 kW (Normal Duty) / 450 kW (Heavy Duty)

  • Rated voltage: 3-Phase 400V AC

  • Supports asynchronous & synchronous motors with advanced motor auto-tuning

  • High starting torque: 0.25 Hz / 150% (async), 0 Hz / 200% (sync)

  • Precise speed control: ±0.2% (SVC), ±0.02% (VC)

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

  • Multiple braking modes: dynamic, DC, magnetic, short-circuit

  • Integrated Safe Torque Off (STO) for enhanced safety

  • Uninterrupted operation during brief power outages

  • Industrial connectivity: built-in Modbus RTU plus optional CANopen, Profibus DP, Profinet

  • Optional Bluetooth/WiFi for remote monitoring via INVT-Workshop app

  • Flexible I/O: digital inputs, pulse inputs, analog inputs, relay & analog outputs

  • User-friendly multilingual LCD panel and programmable PLC (128kB)

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

  • Ideal for heavy industrial applications: pumps, fans, conveyors, HVAC, and more

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SKU: GD350A-450G/500P-4 Category: Tag: Brand:

Description

The INVT GD350A 500 kW VFD (400 V) is the most powerful model in the GD350A series, engineered for heavy industrial and OEM applications that demand high efficiency and precision control. Featuring dual-rating operation — 500 kW Normal Duty and 450 kW Heavy Duty — it ensures stable performance, high torque, and energy savings across diverse load conditions.

The INVT GD350A 500 kW integrates advanced motor control, comprehensive protection, and flexible communication interfaces, making it ideal for pumps, compressors, fans, conveyors, and large-scale process equipment.

Key Specifications

  • Power Rating: 500 kW (Normal Duty) / 450 kW (Heavy Duty)

  • Rated Voltage: 3-Phase 400 V AC

  • Control Modes: Advanced I/F Control, Vector Control (VC), Sensorless Vector Control (SVC), Constant Current Control

  • Supported Motors: Asynchronous & Synchronous

High Torque Performance & Precision Control

  • Starting Torque: Up to 150 % at 0.25 Hz (Asynchronous) and 200 % at 0 Hz (Synchronous) for powerful startup under heavy load.

  • Speed Accuracy: ± 0.2 % (SVC) / ± 0.02 % (VC) for ultra-smooth, stable speed regulation.

  • Torque Accuracy: ± 10 % (SVC) / ± 5 % (VC) for precise torque response and energy efficiency.

  • Automatic Motor Tuning: Self-optimizes motor parameters to improve efficiency, reduce heating, and maintain stability across varying load conditions.

Enhanced Reliability, Safety & Protection

  • Voltage & Current Stability: Adaptive algorithms prevent overvoltage during deceleration, limit inrush current during acceleration, and protect against output frequency surges.

  • Overload Capacity: 150 % for 1 min, 180 % for 10 s, 200 % for 1 s — ideal for fluctuating or heavy start loads.

  • Safe Torque Off (STO): Hardware-integrated, compliant with the latest machinery safety standards.

  • Ride-Through Operation: Maintains motor output during short power losses using internal stored energy — ensuring continuous process uptime.

Advanced Braking & Noise Suppression

  • Braking Options: Dynamic, DC, flux, and short-circuit braking for safe and efficient deceleration.

  • Integrated Braking Chopper: Eliminates need for external components.

  • Digital Noise Filtering: DSP-based signal processing minimizes electromagnetic interference for stable communication and precise control.

Industrial Connectivity & Smart Features

  • Built-in Networks: Native Modbus RTU; optional CANopen, Profibus DP, Profinet modules for flexible system integration.

  • IoT Monitoring: Optional Bluetooth / Wi-Fi modules enable remote configuration and real-time diagnostics (via INVT-Workshop App).

  • Flexible I/O: 4 digital inputs, 2 high-speed pulse inputs, 2 analog inputs, relay and analog outputs for advanced automation.

  • USB Port: For firmware updates, parameter backup, and performance data export.

User-Friendly Operation & Expandability

  • Multilingual LCD Panel: Clear menu navigation for setup, operation, and troubleshooting.

  • Integrated PLC: 128 kB memory for custom automation logic.

  • Expansion Slots: Three modular ports for additional PLC, communication, I/O, or feedback cards.

  • PC & Cloud Access: Supports USB-RS485, Ethernet, UDP, and MQTT for remote supervision and data management.

Ideal Applications

  • Large industrial pumps and compressors

  • HVAC systems and air handling units

  • Conveyors and material-handling lines

  • Machine tools and processing equipment

  • Packaging and textile manufacturing

  • Renewable-energy and smart-grid systems

  • Water and wastewater treatment

Why Choose the INVT GD350A 500 kW

For professionals who need a reliable, high-capacity 500 kW inverter with advanced control and safety functions, the GD350A 500 kW  stands out as a top-tier choice. It combines high overload endurance, intelligent motor control, and extensive connectivity in a compact, durable design — ideal for demanding industrial automation and continuous-duty operations.

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 500
Rated Current 860
G (Heavy Duty) Motor Rated Power 450
Rated Current 820
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 optional
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 620 mm x 1700 mm x 580 mm / 407kg

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FAQ

1. What are the power ratings of the INVT GD350A 500 kW VFD?
The INVT GD350A 500 kW VFD features a dual-rating design: 500 kW for Normal Duty and 450 kW for Heavy Duty. This makes it ideal for demanding industrial motors and heavy-duty applications.

2. What input voltage does the INVT GD350A 500 kW require?
The GD350A 500 kW operates on a three-phase 400 V AC supply, commonly used in industrial motor control systems.

3. Which types of motors can the INVT GD350A 500 kW control?
It supports both asynchronous (induction) motors and synchronous motors, offering versatile motor control with advanced auto-tuning capabilities.

4. What control modes are available in the GD350A 500 kW?
This VFD includes multiple control modes: Vector Control (VC), Sensorless Vector Control (SVC), Advanced I/F Control, and Constant Current Control, providing precise and flexible motor operation.

5. How does the GD350A 500 kW ensure reliable low-speed torque?
Thanks to high starting torque capabilities—up to 0.25 Hz at 150 % torque for asynchronous motors and 0 Hz at 200 % torque for synchronous motors—the INVT GD350A 500 kW VFD guarantees smooth and stable performance even at very low speeds.

6. What safety features are integrated into the GD350A 500 kW?
Key safety features include Safe Torque Off (STO), comprehensive fault detection (overvoltage, overcurrent, phase loss, overheating), and advanced braking modes to ensure operator and equipment protection.

7. Can the GD350A 500 kW handle heavy overload conditions?
Yes. The INVT GD350A 500 kW supports 150 % overload for 1 minute, 180 % for 10 seconds, and 200 % for 1 second, making it suitable for peak load and demanding industrial tasks.

8. Which communication protocols are supported by the GD350A 500 kW?
It comes with built-in Modbus RTU and optional protocols including CANopen, Profibus DP, and Profinet, enabling seamless integration into industrial automation systems.

9. Is remote monitoring possible for the GD350A 500 kW?
Yes. Optional Bluetooth and Wi-Fi modules allow wireless remote control and monitoring through the INVT Workshop app, up to a 30-meter range.

10. What applications is the GD350A 500 kW suitable for?
The INVT GD350A 500 kW VFD is perfect for heavy-duty pumps, large fans, conveyors, HVAC systems, machine tools, packaging machinery, textile manufacturing, food processing, and renewable energy systems.

11. How user-friendly is the GD350A 500 kW?
It features a multilingual LCD control panel, programmable PLC memory for custom automation, easy parameter setting, and expandable I/O slots for enhanced customization.

Related Documents

Documentation for INVT GD350A 3-Phase 400V 500kW:

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