37 kW 3-phase 400V inverter front view – INVT GD350A VFD
37 kW 3-phase 400V inverter front view – INVT GD350A VFD
Right side of 37 kW 3-phase 400V inverter – INVT GD350A VFD
Left side of 37 kW 3-phase 400V inverter – INVT GD350A VFD
Top view of 37 kW 3-phase 400V inverter – INVT GD350A VFD
Bottom view of 37 kW 3-phase 400V inverter – INVT GD350A VFD

INVT GD350A 37 kW VFD | 400 V 3-Phase Inverter (Dual-Rating)

CHF 1,495.00 excl. VAT, free Shipping

  • Power Rating: 37 kW (Normal Duty) / 30 kW (Heavy Duty)

  • Voltage: 3-Phase 400V AC input

  • Motor Control: Vector control (VC/SVC), I/F, torque control – supports asynchronous & synchronous motors

  • High Starting Torque: Up to 200% at 0 Hz (VC mode)

  • Motor Auto-Tuning: For optimized efficiency and setup

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

  • Built-in STO Function: Safety-compliant torque cut-off

  • Overload Capability: 150% (1 min), 180% (10s), 200% (1s)

  • Braking Modes: Dynamic, DC, magnetic, short-circuit + regenerative braking

  • Connectivity: Modbus RTU standard, optional Profinet, Profibus, CANopen

  • IoT Ready: Bluetooth/WiFi card for remote access via mobile app

  • User Interface: Multi-language LCD panel + USB data transfer

  • Flexible I/O: Multiple digital/analog inputs & outputs, encoder ports

  • Built-in PLC: 128kB logic memory for automation tasks

  • Applications: HVAC, pumps, conveyors, CNC, packaging, water treatment & more

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SKU: GD350A-030G/037P-4 Category: Tag:

Description

The INVT GD350A 37 kW 3-phase inverter (Normal Duty 37 kW / Heavy Duty 30 kW) is designed for precise motor control and high-efficiency operation in demanding industrial environments. With advanced vector control, integrated safety (STO), and built-in braking and EMC filtering, it ensures stable and reliable performance across variable loads.

Ideal for HVAC systems, pumps, conveyors, compressors, and process automation, the GD350A 37 kW delivers consistent torque even at low speeds — making it a powerful solution for both new installations and energy-saving upgrades.

Key Specifications

  • Power Rating: 37 kW (Normal Duty) / 30 kW (Heavy Duty)

  • Input Voltage: Three Phase 400V AC

  • Motor Compatibility: Asynchronous and synchronous motors

  • Control Modes: Vector control (VC), Sensorless vector control (SVC), Torque control, I/F control

  • Integrated DC Reactor: Reduces harmonic distortion and improves power factor, ensuring smoother current flow and extended component life

High Torque at Low Speed with Auto-Tuning

With starting torque up to 200% at 0 Hz (VC mode), the INVT GD350A 37 kW ensures smooth, powerful starts for even the most demanding loads. The integrated motor auto-tuning supports both asynchronous and permanent magnet motors—reducing commissioning time and optimizing efficiency.

  • Asynchronous Motor Start: 0.25 Hz / 150%

  • Synchronous Motor Start: 0 Hz / 200%

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

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

Robust Performance & Safety

Engineered for continuous operation, the GD350A 37 kW features smart voltage and current control to prevent faults during acceleration, deceleration, and load changes. It also includes:

  • Overload Protection: 150% for 1 min, 180% for 10s, 200% for 1s

  • Integrated Safe Torque Off (STO): Achieves immediate power cut-off for operator safety

  • Short Power Loss Recovery: Ensures uninterrupted motor operation during brief outages

  • EMC Filter (C3): Reduces electrical noise without additional installation complexity

Advanced Braking & Energy Recovery

Designed for maximum energy efficiency and safety, the GD350A 37 kW includes multiple braking modes:

  • Built-in Dynamic Braking & Chopper

  • DC, Magnetic & Short-Circuit Braking

  • Regenerative Braking Support: Recycles braking energy to improve overall system efficiency

Smart Connectivity & Industrial IoT Integration

The GD350A 37 kW supports a wide range of communication protocols and smart functions to suit modern automation systems:

  • Standard Protocols: Modbus RTU

  • Optional Communication: CANopen, Profibus DP, Profinet

  • Wireless Monitoring: Add-on Bluetooth/WiFi cards for remote control via the INVT-Workshop mobile app (up to 30m range)

Versatile I/O & Expandability

  • 4 Digital Inputs, 2 High-Speed Pulse Inputs

  • 2 Analog Inputs, 2 Analog Outputs, 2 Relay Outputs

  • 2x HDI Ports for AB Pulse Input or Encoder Signals

  • USB Interface for easy data backup and diagnostics

  • 3 Expansion Slots: For I/O cards, feedback modules, communication adapters, or mini-PLCs

User-Friendly Interface & Built-In PLC

  • Multi-Language LCD Panel: Intuitive navigation and real-time feedback

  • Embedded PLC: 128kB memory for custom automation logic

  • Flexible Frequency Setting: Digital, analog, pulse, PID, or simple PLC

Application Versatility

  • HVAC fans and pumps

  • Conveyor systems and mixers

  • Machine tools and CNC equipment

  • Textile, packaging, and food processing lines

  • Renewable energy systems and water treatment plants

Why Choose the INVT GD350A 37kW?

With cutting-edge vector control, safe and reliable operation, and industrial-grade connectivity, the GD350A 37 kW delivers performance you can trust. Whether upgrading existing systems or building new installations, it ensures efficient motor control, long service life, and easy integration with Industry 4.0 setups.

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 37
Rated Current 75
G (Heavy Duty) Motor Rated Power 30
Rated Current 60
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 Integrated
EMC Filter Integrated IEC61800-3 C3; IEC61800-3 C1 & C2 optional
DC Reactor integriert
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 250 mm x 400 mm x 223 mm / 17 kg

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FAQ

1. What is the difference between the 37 kW Normal Duty and 30 kW Heavy Duty ratings on the GD350A 37 kW?
The GD350A 37 kW provides a 37 kW Normal Duty rating for continuous operation under standard conditions. Its 30 kW Heavy Duty rating is designed for frequent starts, heavy loads, or harsh environments, ensuring reliable performance under more demanding applications.

2. Can the GD350A 37 kW control both asynchronous and synchronous motors?
Yes, it supports advanced vector control modes with motor auto-tuning for both asynchronous (induction) and synchronous motors, delivering optimal performance and efficiency.

3. What level of motor control accuracy does the GD350A 37 kW provide?
In vector control mode, speed accuracy is up to ±0.02%, and in sensorless vector mode up to ±0.2%, allowing precise speed and torque management for demanding industrial drives.

4. Does the GD350A 37 kW offer high starting torque?
Yes, it provides up to 200% starting torque at 0 Hz in vector control mode, ideal for pumps, conveyors, fans, and other applications requiring smooth starts under heavy loads.

5. What safety features are included in the GD350A 37 kW?
It integrates Safe Torque Off (STO) for instant motor shutdown in emergencies. Additional protections include overcurrent, overvoltage, undervoltage, overload, and overheating safeguards.

6. What is the overload capacity of the GD350A 37 kW?
It handles overloads of 150% for 1 minute, 180% for 10 seconds, and 200% for 1 second, supporting stable operation under fluctuating load conditions.

7. Which braking methods does the GD350A 37 kW support?
Dynamic, DC, flux, short-circuit, and built-in regenerative braking are supported, enabling energy-efficient deceleration.

8. Can the GD350A 37 kW be connected to industrial networks?
Yes, it includes Modbus RTU by default and supports optional modules for Profinet, Profibus DP, and CANopen for integration into industrial automation systems.

9. Is remote monitoring and control possible?
With optional Bluetooth or WiFi modules, the GD350A 37 kW can be monitored and controlled via the INVT-Workshop mobile app within a range of up to 30 meters.

10. What industrial applications is the GD350A 37 kW suitable for?
It is ideal for HVAC systems, pumps, conveyors, packaging machines, CNC machinery, textile and food processing, and renewable energy systems.

11. How customizable is the GD350A 37 kW?
Programming is user-friendly via a multi-language LCD panel. The inverter supports PLC programming, 128 kB memory, USB data transfer, and expandable I/O and communication modules.

12. Can the GD350A 37 kW handle short power interruptions?
Yes, it can maintain operation during brief outages using stored energy, minimizing downtime in critical industrial processes.

Related Documents

Documentation for INVT GD350A  3-Phase 400V 37 kW:

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