Hitachi RCU-4022 Regenerative Converter

  • Series: RCU Regenerative Converter Unit
  • 400 V Class
  • 22 kW (30 HP) Rated Capacity
  • Three-Phase, 25 % ED Duty

SPECIFICATIONS

Model Name RCU-4022
Series RCU Series Regenerative Converter Unit
Voltage Class 380 – 480 V AC (3-Phase, 50/60 Hz)
Rated Power 22 kW (30 HP)
Rated DC Input Current (Id) 45 A (average)
Rated AC Output Current (In) 35 A rms (100 s / 400 s cycle)
Continuous Output Current (Ic) 17 A rms
Regenerative Torque 150 % for 30 s / 100 % for 100 s / 80 % continuous
Duty Cycle 25 % ED (100 s ON / 400 s cycle)
Control Method PWM current control method
Protection Functions Over-current, Over-voltage, Overload, Overheat, Phase Imbalance, Emergency Stop
Enclosure Rating IP20 (Natural air cooling)
Mounting Style Vertical Wall or Panel Mount (KE3 Frame)
Dimensions (W × H × D) 195 × 425 × 210 mm (7.68 × 16.73 × 8.27 in)
Weight Approx. 13 kg (28.7 lb)
Ambient Temperature Range –10 °C to +40 °C (Operation) / –20 °C to +65 °C (Storage)
Humidity < 90 % (non-condensing)

Manuals and Specifications

Instruction Manual
Hitachi RCU Series Regenerative Converter Unit Instruction Manual (HAL1057C)

SERIES DESCRIPTION

The Hitachi RCU-4022 is a 400 V class regenerative converter unit engineered to recover braking energy and feed it back to the AC supply line, improving system efficiency and reducing heat loss from traditional braking resistors. It works seamlessly with Hitachi inverters such as the SJ700 series for applications that require frequent deceleration or energy feedback.

Features

  • 400 V class converter for 22 kW (30 HP) inverters
  • Provides energy recovery from regenerative braking
  • Compact KE3 frame design for panel or wall mount installation
  • Built-in thermal, over-current, and over-voltage protection circuits
  • 25 % ED duty cycle with natural air cooling (IP20 rated enclosure)

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