Description
Product Description
The ABB UNITROL 1020 (UNS0119A-Z,V1, 3BHE030579R0003) is a digital automatic voltage regulator (AVR) designed for excitation control of synchronous generators. It regulates generator terminal voltage by controlling excitation current, helping maintain stable voltage during changes in load and operating conditions. Typical applications include industrial power plants, generator sets, and power generation systems.
The UNITROL 1020 BASIC version provides digital excitation control, monitoring, diagnostic functions, event recording, and communication capabilities. Its interfaces include Ethernet, USB, and RS-485, with CAN availability depending on configuration. The unit supports AVR and field-current regulation modes. Before replacement or commissioning, verify the generator’s excitation topology, voltage and current ratings, firmware, parameter configuration, and protection settings.
UNITROL 1020 3BHE030579R0003
Product Parameters
- Brand: ABB
- Model: UNITROL 1020
- Type Designation: UNS0119A-Z, V1
- Order Number: 3BHE030579R0003
- Series: UNITROL 1000
- Product Name: Digital Automatic Voltage Regulator (AVR)
- Product Version: UNITROL 1020-0003 BASIC
- Application: Synchronous generator excitation and voltage regulation
- Excitation Current: 20 A continuous; up to 38 A ceiling at 55°C ambient, subject to specified operating conditions
- Excitation Input: AC or DC input; exact operating limits depend on the circuit and configuration
- Control Modes: Automatic voltage regulation and field-current regulation
- Communication Interfaces: Ethernet, USB, RS-485; verify optional CAN availability
- Monitoring Functions: Measurements, event logging, data recording, and diagnostics
- Protection Functions: Generator and excitation-system protection functions according to configuration
- Degree of Protection: IP20
- Dimensions: Approximately 245 × 335 × 500 mm (H × W × D), based on listed product dimensions; confirm before installation
- Weight: Approximately 6.71 kg net
- Place of Manufacture: Switzerland or Turkey, depending on the individual unit
- Country of Origin: Verify from the product label and shipping documentation
- Product Status: UNITROL 1020 product family; current availability depends on the order code and supplier
- Discontinued: Not confirmed for this exact order code; check with ABB
Recommended Models
- ABB UNITROL 1020-0003 BASIC (3BHE030579R0003) — Same model and order code.
- ABB UNITROL 1020-0004 BASIC + SYNC (3BHE030579R0004) — BASIC version with synchronization functionality.
- ABB UNITROL 1020-0006 FULL (3BHE030579R0006) — FULL version with additional functionality.
- ABB UNITROL 1020-0007 FULL + PSS (3BHE030579R0007) — FULL version with power system stabilizer functionality.
- ABB UNITROL 1010-0002 LIGHT (3BHE035301R0002) — Compact AVR for suitable excitation applications.
- ABB UNITROL 1010-0003 BASIC (3BHE035301R0003) — BASIC excitation controller.
- ABB UNITROL 1010-0004 BASIC + SYNC (3BHE035301R0004) — UNITROL 1010 version with synchronization functionality.
- ABB UNITROL 1005-0011 ECO (3BHE043576R0011) — Compact voltage regulator for compatible applications.
- ABB UNITROL 1005-0012 LIGHT (3BHE043576R0012) — LIGHT version for suitable generator excitation systems.
- ABB UNITROL 1000-15 — Legacy excitation controller family; confirm the complete order code.
- ABB UNITROL 1000-7 — Legacy excitation controller family.
- ABB UNITROL 1000-PM40 — Excitation power module for supported configurations.
- ABB UNITROL 1020 SCP Door Kit (3AUA0000013086) — Panel door accessory for compatible installations.
- ABB UNITROL 1020 Connection Cable (3BHE027825R0150) — Ethernet patch cable accessory for compatible configurations.
- ABB UNITROL 1000 Excitation System Accessories — Related components for installation, commissioning, and maintenance.
Related models and accessories are not all direct replacements. Confirm excitation current, synchronization requirements, software options, and generator-system compatibility before ordering.
