ABB UNITROL 1020 3BHE037460R6207 automatic voltage controller

Operation Modes

• Automatic Voltage Control (AVR) with an adjustable 530 controller.
• Power factor and reactive power control using a 530 control algorithm.
• Current regulator with IP control.
• Reactive power sharing for generators connected in parallel or island operation.
• Automatic synchronization and voltage matching.

System Functions

• Redundant channel system backup and setpoint tracking via a reliable CAN bus.
• Synchronization check function.
• Rotating diode monitoring function.
• Various limiter functions (e.g., field current limiter).
• Automatic and manual triggering of a data logger to record measurements and user-selected data.
• Event logger function to record messages with time and date stamps.

Communication & Configuration

• Full-featured MODBUS communication via standard Ethernet and RS485.
• Simple configuration and measurement via the regulator’s powerful LCD panel.
• The user-friendly debugging and maintenance software tool CMT1000 for parameterization, monitoring, trending, and optimization.

I/O Configuration

• Digital I/O: 12 inputs (8 of which can be configured as outputs).
• Analog I/O: 3 inputs, 2 outputs.
• Digital input expansion using free analog inputs (up to 6 additional digital inputs).

Other Features

• Displays for measurements, alarms, and limiters.
• Real-time clock synchronized with a time server and signal-to-noise ratio monitoring.
• Robust dual-processor technology ensures control stability even during Ethernet communication disturbances.

Electrical Parameters

• Field Current (CE Standards):
  • Nominal: 20A
  • Upper Limit: 38A (3-phase input voltage).
• Field Current (UL Standards):
  • Nominal: 15A
  • Upper Limit: 38A (3-phase input voltage).
• Nominal Input Voltage: 250Vac.
• Control Power Supply:
  • AC: 20Vac to 250Vac
  • DC: 20Vdc to 300Vdc.

Mechanical Parameters

• Dimensions (W×H×D): 687×955×168 mm.
• Weight: 2.9 kg.