ABB UNITROL1020 3BHE030579R0007

Overview

The ABB UNITROL® 1020 is a state-of-the-art, digital static excitation system designed for synchronous generators and compensators. It is part of ABB's comprehensive UNITROL® family, known for its reliability, flexibility, and advanced control capabilities. The 3BHE030579R0007 is a specific unit designation within this product line.

Key Technical Parameters

The parameters can be categorized into input (generator/grid side), output (exciter field side), and system characteristics.

1. Input Power (Mains Supply)

Supply Voltage: Typically 400 VAC or 690 VAC, 3-phase. The exact voltage is configurable and depends on the specific order.

Frequency: 50 Hz or 60 Hz (nominal).

Supply Variation: Can typically operate within a range of ±10% of the nominal voltage.

2. Output Power (To Generator Exciter)

Output Type: For static exciters, the UNITROL 1020 provides a DC output to the main generator's field winding.

Output Voltage (Uf): The maximum field voltage is application-specific. It is determined by the generator's requirements and the power capability of the excitation transformer. Common ranges are from up to 150 VDC for smaller machines to over 500 VDC for large generators.

Output Current (If): The maximum field current is also generator-specific. It can range from a few hundred Amperes to over 5000 A for very large turbogenerators. The unit's rating (e.g., 500 A, 1500 A) defines this.

Forcing Capability: A critical feature. The unit can provide a short-term field forcing (overvoltage) to support the grid during faults. Standard forcing is typically 1.6 to 2.0 times the rated field voltage for a short duration (e.g., 10-50 seconds).

3. System Characteristics

Control Technology: Fully digital, based on powerful microprocessor technology.

Control Modes:

Automatic Voltage Regulation (AVR) Mode: Regulates the generator terminal voltage.

Field Current / Reactive Power Control Mode: Allows manual control of field current or reactive power.

Power System Stabilizer (PSS): Optional software function to dampen power system oscillations.

Regulation Range: Generator voltage typically adjustable from 80% to 110% of rated voltage.

Voltage Response Time: Extremely fast, meeting IEEE Std 421.2 requirements. Can achieve a response ratio of > 3.0 per second or better.

Static Accuracy: High precision regulation with an accuracy of better than ±0.5%.

Cooling Method: Air-cooled (natural convection or forced air with fans) for standard units. Liquid cooling is available for very high-power applications.

Communication Interfaces:

Standard: Multiple digital and analog I/Os for control and monitoring.

Optional: Fieldbus protocols like PROFIBUS DP, MODBUS RTU/TCP, IEC 61850, for seamless integration into plant control systems (DCS/SCADA).

4. Environmental & Mechanical

Ambient Operating Temperature: Typically 0°C to +40°C (up to +50°C or higher with de-rating).

Storage Temperature: -25°C to +70°C.

Relative Humidity: Up to 95% (non-condensing).

Enclosure Rating: Usually IP00 (for mounting in a protected switchgear room) or up to IP21/IP42 for more rugged environments.

Standards & Certifications: Complies with major international standards such as IEC, IEEE, ANSI, UL, CE, DNV GL.

Summary Table

Important Note:

The exact values for output current (If) and voltage (Uf) for the specific unit 3BHE030579R0007 are determined by the generator it is paired with. This model number is a base unit, and its final rating is defined by additional order codes for the power section (thyristor bridge), transformer, and other options.
 

===================================================================================================================================================================

First hand source//affordable price//Spot inventory!

•Shipping Port: Xiamen

•E-mail: sales7@saulplc.com

•Tel/WhatsApp/Wechat: + 86-15359273796

•Ship to you via Fedex/DHL/TNT/UPS/EMS

•Package: Original packing with cartons