INVT GD350A 45 kW VFD | 400 V 3-Phase Inverter (Dual-Rating)
CHF 1,755.00 excl. VAT, free Shipping
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Dual Power Rating: 45 kW (Normal Duty) / 37 kW (Heavy Duty)
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Input Voltage: 3-Phase 400V AC
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Advanced Motor Control: Vector & Sensorless Vector modes for precise speed and torque
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High Starting Torque: 0.25 Hz / 150% (asynchronous), 0 Hz / 200% (synchronous)
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Motor Auto-Tuning for asynchronous & synchronous motors
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Robust Protection: Overcurrent, overvoltage, phase loss, overheating, and overload safeguards
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Integrated Safe Torque Off (STO) for operator safety
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Multiple Braking Options: Dynamic, DC, magnetic, short-circuit, plus regenerative braking
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Flexible Connectivity: Modbus RTU standard; CAN, Profibus, Profinet optional
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Optional Bluetooth/WiFi for remote monitoring via INVT-Workshop app
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User-Friendly LCD Panel & USB Data Management
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Expandable with I/O, PLC, and communication cards for custom automation
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Ideal for HVAC, pumps, conveyors, packaging, machine tools, and industrial automation
Description
The INVT GD350A 45 kW variable frequency drive is designed for precision motor control and high-performance automation in industrial environments. With dual power ratings — 45 kW (Normal Duty) and 37 kW (Heavy Duty) — it offers the flexibility to handle variable loads with efficiency and stability.
Ideal for HVAC systems, pumps, compressors, and conveyors, the compact and intelligent INVT GD350A 45 kW combines advanced vector control, integrated safety functions, and energy-optimized operation for long-term reliability.
Key Specifications
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Power Rating: 45 kW (Normal Duty) / 37 kW (Heavy Duty)
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Input/Output Voltage: 3-Phase 400V AC
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Control Modes: Vector Control (VC), Sensorless Vector (SVC), I/F, and Constant Current Source
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Applications: Pumps, fans, compressors, HVAC, textiles, machine tools, automation, and process industries
Precision Control & Robust Performance
Advanced Low-Speed Torque Delivery
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Starting Torque: 0.25Hz / 150% (asynchronous), up to 0Hz / 200% (synchronous)
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Torque Control Accuracy: 10% (SVC), 5% (VC)
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Position Accuracy: ±1 pulse
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Speed Accuracy: ±0.2% (SVC), ±0.02% (VC)
Motor Auto-Tuning
The INVT GD350A 45 kW supports both asynchronous and permanent magnet synchronous motors for optimized efficiency, accurate speed control, and reduced energy waste — even under varying load conditions.
Stable Operation
Integrated DC Reactor
The GD350A 45 kW includes a built-in DC reactor that effectively suppresses harmonics, improves power factor, and reduces input current peaks — extending component life and ensuring stable long-term operation.
Voltage & Current Optimization
Intelligent algorithms monitor voltage and current in real-time to prevent overvoltage stalls, eliminate surges during start/stop sequences, and minimize fault triggers.
Built-in Protection, Braking & STO Safety
Comprehensive Protection Suite
Over 30 built-in fault protections, including:
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Overvoltage, Overcurrent, Undervoltage
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Phase Loss, Overheating
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Overload: 150% for 1 min, 180% for 10s, 200% for 1s
Integrated Safe Torque Off (STO)
Ensures operator safety by instantly disconnecting motor torque, meeting international machinery safety standards.
Advanced Braking System
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Built-in braking chopper and energy regeneration
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DC, dynamic, magnetic, and short-circuit braking supported
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Enhances deceleration control while improving energy recovery and reducing external hardware needs
Connectivity & Intelligent Features
Versatile I/O & Interfaces
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4 digital inputs, 2 high-speed pulse inputs
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2 analog inputs, 2 analog outputs, 2 relay outputs
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1 high-speed pulse output
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Dual HDI ports for AB pulse input and high-precision speed signal reception
Industrial Networking Ready
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Standard: Modbus RTU
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Optional: CAN, Profibus-DP, Profinet, Ethernet/IP, and others via communication cards
Wireless IoT Capabilities
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Optional Bluetooth or WiFi modules enable remote monitoring, configuration, and control via the INVT-Workshop App (30m range)
Custom Automation with Mini PLC
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128kB program memory for tailored automation logic
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Flexible frequency setting: analog/digital, pulse, multi-step, PID, and simple PLC modes
User Experience & Expandability
LCD Control Panel
Easy-to-read display with intuitive navigation for commissioning, monitoring, and daily operation.
USB Data Port
Quick access for data backup, fault diagnostics, and curve analysis via PC.
Expandable Architecture
Three expansion slots support I/O cards, feedback modules, PLC cards, and communication extensions — allowing full customization.
Applications
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HVAC Systems (fans, blowers, compressors)
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Pumping & Water Management
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Textile and Packaging Machinery
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Food Processing & Automation Lines
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Conveyor Systems & Machine Tools
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Renewable Energy & Smart Grid Integration
Why Choose the INVT GD350A 45 kW?
If you’re looking for a reliable, high-efficiency 45kW Inverter with advanced control, integrated safety, and flexible connectivity — the INVT GD350A 45 kW Inverter is built to exceed expectations in modern industrial environments. Whether you require smooth motor startup, low-speed torque control, or remote access, it delivers the features and durability professionals count on.
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 | 45 |
| Rated Current | 92 | |
| G (Heavy Duty) | Motor Rated Power | 37 |
| Rated Current | 75 | |
| 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 | 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 | 250 mm x 400 mm x 223 mm / 17 kg | |
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FAQ
1. What is the power rating of the INVT GD350A 45 kW 400 V 3-phase inverter?
The INVT GD350A 45 kW inverter also supports 37 kW (Heavy Duty), providing flexibility for industrial loads with varying demands.
2. What voltage does the INVT GD350A 45 kW operate on?
This GD350A model is designed for three-phase 400 V AC power, suitable for standard industrial environments.
3. Which motor types can the GD350A 45 kW control?
It is compatible with asynchronous (induction) and permanent magnet synchronous motors (PMSM). Built-in motor auto-tuning ensures optimal performance for each motor type.
4. Can the GD350A 45 kW handle low-speed applications?
Yes. It provides high starting torque down to 0.25 Hz for induction motors and 0 Hz for synchronous motors, ideal for pumps, conveyors, and fans requiring precise low-speed control.
5. What safety features are included in the GD350A 45 kW?
It integrates Safe Torque Off (STO) for instant motor shutdown, plus comprehensive protections including overcurrent, overvoltage, undervoltage, phase loss, and overload safeguards.
6. Does the GD350A 45 kW support braking and energy recovery?
Yes. It includes dynamic, DC, magnetic, and short-circuit braking, as well as a built-in regenerative brake to efficiently recycle energy during deceleration.
7. How can the GD350A 45 kW be connected and controlled remotely?
Standard Modbus RTU communication is supported, with optional modules for CAN, Profibus DP, Profinet, and Ethernet. Optional Bluetooth and WiFi modules allow wireless control via the INVT Workshop app within 30 m range.
8. Is the GD350A 45 kW easy to program and configure?
Yes. It features an intuitive LCD control panel, flexible PLC programming (128 kB memory), and USB ports for quick data transfer, firmware updates, and diagnostics.
9. What industries is the GD350A 45 kW best suited for?
Ideal for HVAC, water treatment, textile and packaging machinery, conveyors, machine tools, and renewable energy systems that require precise speed and torque control.
10. Can the INVT GD350A 45 kW handle power fluctuations?
Yes. It maintains stable operation during short power interruptions using stored energy, minimizing downtime in critical industrial processes.
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