The ABB UNS 0007A-P, V1 (HIEE305098R0001) is a specialized Firing Board that plays a critical role in excitation systems, particularly within ABB's Unitrol P series. This board is essential for controlling the thyristors or rectifiers that regulate the excitation (field current) of synchronous machines like generators and large motors.

Product Description

The UNS 0007A-P, V1 (HIEE305098R0001) is a Firing Board specifically designed for high-voltage applications, typically rated for 1400V. In excitation systems, the firing board generates precise gate or trigger pulses that control the switching of power semiconductors (like thyristors) in a rectifier bridge. This process converts AC voltage into a controlled DC current that is then supplied to the rotor windings of a synchronous machine.

Accurate and reliable firing is crucial for maintaining stable voltage and reactive power in power generation, and for efficient operation of large synchronous motors. The board's design focuses on precision timing, noise immunity, and robustness to ensure consistent performance in demanding electrical environments.

Product Specifications

• Model/Type: Firing Board
• ABB Part Number: HIEE305098R0001
• Alternative Designation: UNS 0007A-P, V1
• Voltage Rating: Specifically designed for 1400V applications.
• Application: Primarily used in Unitrol P Excitation Systems for synchronous generators and motors.
• Functionality: Generates precise firing pulses for power semiconductors (e.g., thyristors) in rectifier circuits.
• Dimensions (Approximate): 7.0 in x 5.3 in x 2.0 in (17.8 cm x 13.5 cm x 5.1 cm).
• Weight (Approximate): 0.4 kg (0 lbs 13.1 oz).
• Robustness: Engineered for demanding industrial electrical environments.

Product Application Cases

The ABB UNS 0007A-P, V1 (HIEE305098R0001) Firing Board is a cornerstone component in various applications requiring precise control of synchronous machines.

• Power Generation Plants: This is its most common application. It's used in the excitation systems of large synchronous generators (e.g., in thermal, hydro, nuclear, or gas-fired power plants). The firing board ensures that the generator's voltage and reactive power output are precisely regulated, contributing to grid stability and efficient power delivery.
• Industrial Synchronous Motors: In heavy industries, large synchronous motors (e.g., for compressors, pumps, and fans) are often used for their high efficiency and power factor correction capabilities. The Firing Board controls their excitation, enabling smooth startup and optimal operation.
• Renewable Energy Grid Integration: While modern converters for renewables might use different technologies, older or specific larger renewable energy installations that integrate with synchronous generators could utilize such firing boards for excitation control.
• Voltage Regulation and Grid Stability: In utility applications, where precise voltage control and reactive power compensation are critical for grid stability, excitation systems utilizing this board contribute significantly to maintaining power quality.

Click to download the relevant instruction manual

HIEE305098R0001.pdf