ABB 3BHE030579R0007 UNITROL 1020-0007 FULL+PSS high-performance digital AVR with Power System Stabilizer, for 100kVA–80MVA generators, grid-compliant.

Product Overview

ABB 3BHE030579R0007 (UNITROL 1020-0007 FULL+PSS) is a top-tier digital automatic voltage regulator (AVR) from ABB’s UNITROL 1000 series. It is a fully-featured excitation controller for synchronous generators/motors (100 kVA–80 MVA), integrating complete voltage regulation, data logging, and a built-in Power System Stabilizer (PSS) for grid stability.

Key Specifications

• Brand: ABB
• Order Code: 3BHE030579R0007
• Full Model: UNITROL 1020-0007 FULL+PSS (also UNS0119A-Z)
• Type: Digital Automatic Voltage Regulator (AVR) / Excitation Controller
• Series: UNITROL 1000 / UNITROL 1020
• Configuration: FULL version + PSS (Power System Stabilizer)
• Exciter Current: Up to 20 A continuous
• Generator Range: 100 kVA up to 80 MVA
• Control: 32-bit DSP, fully digital closed-loop control
• Communication: Ethernet, USB, RS485 (Modbus)
• Supply: Wide-range AC/DC auxiliary input
• Dimensions: 245 × 500 × 335 mm
• Weight: 6.71 kg
• Certifications: CE, UL, DNV, IACS, TÜV (grid code compliant)
• Condition: New / Refurbished

• Warranty: 12 Months

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Core Features (FULL+PSS Package)

1. Voltage Regulation (AVR Core)

• ±0.5% steady-state voltage accuracy

• Fast response to load steps & grid disturbances

• Modes: AVR, FCR (field current), PF, VAR control

2. FULL Version Functions

• Event & Data Logger: Records faults, trends, operating history

• Real-Time Clock (RTC) + SNTP time sync

• Dual-channel control & auto-synchronization (SYNC)

• Comprehensive limiters: Overexcitation, Underexcitation, V/Hz, Stator Current

• Rotating diode monitoring & comprehensive protection

3. Integrated PSS (Power System Stabilizer)

• Damping for low-frequency power oscillations (0.2–2.0 Hz)

• Enhances grid stability & transient response

• Prevents hunting in parallel operation

• Complies with IEEE & international grid codes (VDE-AR-N 4110/4120)

4. Hardware & Connectivity

• Isolated analog/digital I/O: configurable for generator/grid signals

• Ethernet + USB: remote access via CMT1000 software

• Hot-swappable & robust design: industrial EMC, -20°C to +70°C

• Isolated field & measurement circuits

  
  

Typical Applications

• Hydropower, gas turbine, diesel gen-sets

• Biomass & CHP plants (grid stability critical)

• Industrial cogeneration & captive power plants

• Marine (propulsion/auxiliary) & traction locomotives

• Retrofit legacy excitation systems with PSS upgrade

• Isolated grids & weak networks requiring oscillation damping

  
  

Why UNITROL 1020-0007 FULL+PSS?

• All-in-one grid-compliant solution: no external PSS hardware needed

• Proven in >40,000 installations worldwide

• Easy setup via CMT1000: auto-tuning & PSS assistant

• Long-term reliability for 24/7 continuous operation

• Global service & spare part support

  
  

Supply & Service

• Availability: In stock (new original & certified refurbished)
• Warranty: 12-month full warranty
• Technical support: CMT1000 setup, PSS tuning, wiring & commissioning

• Global delivery: DHL/UPS/FedEx express

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• About Us

• Guizhou Yuanmiao Automation Equipment Co., Ltd. is a professional supplier of industrial automation spare parts and international trade services.

• We supply genuine DCS systems, PLC modules, servo drives, robot parts and other control components, covering top brands including ABB, Siemens, Woodward, Bently, GE and more.

• We offer competitive prices, fast global delivery, strict quality control and professional after-sales support, providing cost-effective solutions for customers worldwide.

• Our products are widely used in power, oil & gas, metallurgy, marine, manufacturing and other industries. We are committed to being your trusted one-stop partner for industrial automation spare parts.