Front view of INVT GD350A 280 kW 3-phase 400V inverter
Front view of INVT GD350A 280 kW 3-phase 400V inverter
Right side of 280 kW INVT GD350A 400V inverter
Left view of 280kW GD350A VFD showing enclosure and side structure
Top view of INVT 280 kW 3-phase VFD GD350A model
Bottom view of 280kW INVT GD350A inverter showing terminal layout

INVT GD350A 280 kW VFD | 400 V 3-Phase Inverter (Dual-Rating)

CHF 7,995.00 excl. VAT, free Shipping

  • Dual Power Rating: 280 kW (Normal Duty) / 250 kW (Heavy Duty)

  • Voltage: 3-Phase 400V AC | Supports asynchronous & synchronous motors

  • Advanced Control Modes: VC, SVC, I/F control, constant current mode

  • High Starting Torque: 150% at 0.25 Hz (asynchronous), 200% at 0 Hz (synchronous)

  • Precision Performance: Speed accuracy ±0.02% (VC), torque accuracy ±5%

  • Overload Capacity: 150% for 60s, 180% for 10s, 200% for 1s

  • Motor Auto-Tuning: Optimizes parameters for stable and efficient operation

  • Safety Features: Integrated STO (Safe Torque Off), 30+ fault protections

  • Connectivity: Built-in Modbus RTU, optional Profinet, Profibus, CANopen

  • Wireless Control: Optional Bluetooth/WiFi via INVT-Workshop app

  • I/O Interfaces: 4 digital inputs, 2 analog inputs, 2 high-speed pulse inputs, relay & analog outputs

  • USB & PLC: USB for data transfer, 128kB built-in PLC for custom automation logic

  • Modular Design: 3 expansion slots for communication, feedback, or I/O cards

  • Ideal for: HVAC, water/wastewater, pumps, fans, conveyors, machine tools, and energy systems

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SKU: GD350A-250G/280P-4 Category: Tag:

Description

The INVT GD350A 280 kW 400 V 3-phase is engineered for demanding industrial applications requiring high performance, precise motor control, and robust torque. With dual ratings for Normal Duty (280 kW) and Heavy Duty (250 kW), the GD350A 280 kW excels in high-inertia machinery, heavy-duty pumps, HVAC systems, conveyors, and industrial automation processes.

Its integrated safety features, advanced vector control, and flexible communication options ensure reliable and energy-efficient operation, making it ideal for engineers and OEMs looking for scalable, high-performance solutions.

Key Specifications – INVT GD350A 280 kW (ND/HD)

  • Power Rating: 280 kW (Normal Duty) / 250 kW (Heavy Duty)

  • Voltage: 3-Phase 400V AC

  • Supported Motors: Asynchronous & Synchronous

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

Superior Torque Performance & Motor Precision

  • Starting Torque Capacity:

    • Asynchronous motors: 0.25 Hz / 150%

    • Synchronous motors: 0 Hz / 200%

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

  • Torque Control Accuracy: ±10% (SVC), ±5% (VC)

  • Automatic Motor Tuning: Ensures precise motor parameter optimization for improved energy efficiency, torque stability, and control accuracy at all speeds.

Robust Protection & Operation Stability

  • High Overload Capacity:

    • 150% for 60 seconds

    • 180% for 10 seconds

    • 200% for 1 second

  • Integrated Protection Functions:
    Overvoltage, overcurrent, undervoltage, phase loss, overheating, and more than 30 real-time fault protections.

  • Stable Motor Operation:
    Maintains output during short-term power interruptions using internal energy storage—ideal for critical industrial processes.

Advanced Braking & Safety Features

  • Multiple Braking Options:
    Dynamic, DC injection, magnetic, and short-circuit braking for efficient and safe deceleration under varying loads.

  • STO (Safe Torque Off):
    Hardware-integrated safety function ensures immediate motor shutdown in emergency situations, in compliance with machinery safety standards.

Smart Connectivity & Industrial Integration

  • Built-in Protocols: Modbus RTU

  • Optional Communication Modules: CANopen, Profibus DP, Profinet

  • Wireless Control Ready: Optional WiFi/Bluetooth modules allow mobile access and real-time parameter setting via the INVT-Workshop app (up to 30m range)

  • Flexible I/O Interfaces:

    • 4 Digital Inputs

    • 2 High-Speed Pulse Inputs

    • 2 Analog Inputs

    • Analog, relay, and pulse outputs

  • USB Port: For firmware upgrades, data backups, and curve analysis

User-Friendly Interface & Expandability

  • LCD Display Panel: Multilingual UI for seamless commissioning and diagnostics

  • Integrated PLC Function: 128kB of memory for custom automation logic directly in the inverter

  • Three Expansion Slots: Support optional cards for I/O, feedback, and communication enhancements

  • Advanced Frequency Control: Supports PID, multi-step speed, pulse commands, and analog/digital control modes

Typical Applications

  • Industrial HVAC Systems

  • Water & Wastewater Pumping Stations

  • High-Inertia Fans & Blowers

  • Conveyor Belts & Material Handling Equipment

  • Packaging, Textile, and Food Processing Machinery

  • Machine Tools & Mixers

  • Renewable Energy Systems & Energy Storage

Why Choose the INVT GD350A 280 kW?

Engineered for demanding industrial applications, the GD350A 280 kW 400 V 3-phase inverter delivers:

  • High torque at low speeds for heavy-duty machinery and high-inertia loads

  • Exceptional overload capacity with dual Normal and Heavy Duty ratings

  • Advanced communication and remote diagnostics via Modbus, EtherCAT, or fieldbus interfaces

  • Precise vector control and integrated safety features (STO) for reliable operation

  • Flexible modular expandability to accommodate future automation upgrades

For engineers, OEMs, and industrial operators, the INVT GD350A 280 kW combines power, precision, and efficiency—making it the optimal choice for today’s complex automation environments.

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 280
Rated Current 530
G (Heavy Duty) Motor Rated Power 250
Rated Current 480
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 680 mm x 960 mm x 380 mm / 165kg

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FAQ

1. What is the difference between Normal Duty and Heavy Duty power ratings?
The INVT GD350A 280 kW has dual power ratings: 280 kW (Normal Duty, ND) and 250 kW (Heavy Duty, HD).

  • Normal Duty: Suitable for applications with lower torque demands and light overloads.

  • Heavy Duty: Designed for high-inertia loads and demanding startups, offering higher torque and longer overload duration.

2. Can the INVT GD350A 280 kW control both asynchronous and synchronous motors?
Yes, the GD350A 280 kW supports asynchronous (induction) and synchronous (PM) motors for precise speed and torque control across industrial applications.

3. What is the starting torque capability?

  • Asynchronous motors: Up to 150 % torque at 0.25 Hz.

  • Synchronous motors: Up to 200 % torque at 0 Hz.
    High starting torque enables smooth operation of heavy machinery and pumps from standstill.

4. Does the GD350A 280 kW support motor auto-tuning?
Yes, automatic motor tuning optimizes parameters for maximum efficiency, low-speed torque accuracy, and stable speed control.

5. What protection features are included?
The GD350A 280 kW integrates over 30 protections, including:

  • Overvoltage / undervoltage

  • Overcurrent / overload

  • Phase loss detection

  • Overheating / short-circuit

  • Safe Torque Off (STO) for machinery safety compliance

6. Is the GD350A 280 kW compatible with industrial automation networks?
Yes. Built-in Modbus RTU and optional support for CANopen, Profibus DP, and Profinet allow seamless integration with PLC, SCADA, or DCS systems.

7. Does it support wireless control and remote monitoring?
Yes. Optional Bluetooth or Wi-Fi modules enable remote configuration and monitoring via the INVT-Workshop mobile app within a 30 m range.

8. What expansion options are available?
Three expansion slots support:

  • Additional I/O modules

  • Communication cards

  • Encoder/feedback modules
    This modularity allows customization for specific automation requirements.

9. Which applications are best suited for the GD350A 280 kW?
Ideal applications include:

  • HVAC (fans, compressors, air handlers)

  • Water & wastewater pumps

  • Industrial conveyors, crushers, mixers

  • Textile & food processing machines

  • Machine tools and automation lines

  • Renewable energy systems

10. How does the GD350A 280 kW improve energy efficiency?
By adjusting motor speed to actual load, the GD350A reduces energy consumption, lowers mechanical stress, and extends equipment lifespan, especially in variable-load applications like pumps and fans.

Related Documents

Documentation for INVT GD350A 3-Phase 400V 280kW VFDs:

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