Robust 380-480V 3-Phase Input with Automatic Voltage Regulation for Unstable Grids

Place of Origin China
Brand Name COENG
Certification CE
Model Number HV350
Document HV350.xlsx
Minimum Order Quantity 1
Packaging Details Carton, plywood case
Delivery Time 10-30 working day
Payment Terms L/C,T/T,Western Union
Supply Ability 20000sets/year

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Product Details
Input Voltage Input Voltage: 380V (-15%) To 480V (+10%) Phase: Three-phase Input Power Frequency 50Hz/60Hz ±5%
Output Voltage 0V~Input Voltage Output Frequency 0~600Hz
Master Control Motor Type Asynchronous Motor Master Control Speed Range 1:10 V/F;1:100 OLVC;1:1000 CLVC
Master Control Mode V/F, OLVC(Open-loop Vector Control), CLVC(Closed-loop Vector Control)
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380-480V 3-phase frequency inverter

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automatic voltage regulation inverter

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vector inverter for unstable grids

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Product Description
Item Specification Description and Technical Data
Power input/output Input voltage Input voltage: 380V (-15%) to 480V (+10%) Phase: Three-phase
Input power frequency 50Hz/60Hz ±5%
Input voltage imbalance ≤3%
Output voltage 0V~Input voltage
Output frequency 0~600Hz
Master control performance Motor type Asynchronous motor
Control mode V/F, OLVC(Open-loop Vector Control)
Speed range 1:100 V/F; 1:200 OLVC
Starting torque OLVC: 150%(0.25Hz)
Torque precision ±5% (OLVC, above 5Hz)
Torque ripple ≤±5%, in Vector control mode
Speed stability OLVC, 0.2%
Torque response ≤5ms, in Vector control mode
Acceleration/deceleration time 0.0s~3200.0s; 0.0min~3200.0min
Torque boost 0.0%~30.0%
Overload capacity G type: 150% 1min/5min; 180%10s/5min; P type: 110% 1min/5min; 150% 10s/5min
V/F curve Straight-line type, multi-point type, V/F Half separation mode, V/F complete separation mode
Input frequency resolution Digital setting: 0.01Hz, Analog setting: maximum frequency ×0.025%
Main functions Acceleration/deceleration curve Straight line and S-curve
Simple PLC, Multi-speed control 16 speed segments supported through control terminals
Automatic voltage regulation (AVR) Automatically keeps the output voltage constant when grid voltage varies within a certain range
Fixed length control Control with given length
Built-in PID Easily forms a closed-loop control system
Multi-motor switching Switchover between two groups of motor parameters to control the two motors
Virtual I/O 8 groups of virtual VDI/VDO, 3 groups of AI as DI, enabling simple logic control
Overvoltage/Overcurrent stall control Automatic current and voltage limitation during operation preventing the inverter from tripping due to frequent overcurrent or overvoltage
Restart after power failure After power failure and restoration, the inverter waits for a set time before automatically running
Quick current limiting Avoids frequent overcurrent faults in the inverter
Power input/output Frequency setting method Keypad; terminal UP/DOWN; multi-reference; pulse reference; communication
Analog input terminals AI1; AI2: 0V~10V/ 0 (4)mA~20mA
Digital input terminals DI1-DI5, 5 programmable digital input terminals with opto-isolation, compatible with both
sinking/sourcing inputs.
DI5 supports high-speed pulse input with a maximum input frequency of 100kHz.
Digital output terminals Open-collector output; output voltage range: 0V~24V; current load capacity: 50mA.
DO1 supports high-speed pulse output with a maximum output frequency of 100kHz.
Analog output terminals 1-channel 0V ~ 10V/0(4)mA ~ 20mA
Relay output 1-channel Form C contact, NO+NC
Communication Communication protocols Modbus RTU (standard configuration); Profibus-DP; Profinet IO; CANopen; Modbus TCP/IP; Ethercat; EtherNet/IP (optional configuration)
Ambient requirements Altitude ≤1000m: no need for derating
1000~3000m: current derating by 1% per 100m increased
Ambient temperature -25℃~+40℃ (Running with derating allowed between 40~55)
Humidity 15% ~ 95%, No condensation
Vibration 3M3, IEC60721-3-3
Storage temperature −40°C~+70°C
Installation place Indoor, without direct sunlight, free from flammable, corrosive gases, liquids, and conductive particles.
Optional accessories Communication expansion card, I/O terminal expansion cards
Protections Protection against short circuit , overcurrent, overload, overvoltage, undervoltage, phase loss, overtemperature, external faults, etc.
Installation method Installed in a cabinet
Protection rating IP20
Cooling method Air cooling
Robust 380-480V 3-Phase Input with Automatic Voltage Regulation for Unstable Grids 0 Robust 380-480V 3-Phase Input with Automatic Voltage Regulation for Unstable Grids 1 Robust 380-480V 3-Phase Input with Automatic Voltage Regulation for Unstable Grids 2
  1. France
    Achieve energy savings in French manufacturing with the inverter’s AVR function and customizable V/F curves. The relay output and analog terminals enable easy integration into existing control systems.

  2. Italy
    Enhance textile and machinery operations with high-speed pulse input (100kHz) and S-curve acceleration. The inverter’s compact cooling system maintains performance in Italy’s confined industrial setups.

  3. South Korea
    Leverage CANopen and Modbus TCP/IP connectivity for smart factory applications. The inverter’s precise torque control (≤±5%) and wide speed range meet South Korea’s automotive and shipbuilding demands.

  4. Canada
    Operate reliably in cold climates with a storage temperature range of -40°C to +70°C. The inverter’s derating capability at high altitudes ensures stability in Canadian mining and forestry sectors.

  5. Australia
    Withstand harsh outback conditions using the inverter’s dust and vibration resistance. Features like virtual I/O and quick current limiting protect equipment in Australia’s mining and renewable energy projects.

  6. Mexico
    Boost efficiency in Mexico’s automotive industry with the inverter’s closed-loop vector control and overload protection. The easy PLC programming simplifies process automation for cost-sensitive operations.