UNS0017A-P.V1 HIEE305106R0001 ABB Firing Board original

• Brand
  ABB
• Model
  UNS0017A-P.V1
• Product Name
  Firing Board
• Place of Origin
  Switzerland
• Customs HS Code
  85372000
• Part number
  HIEE305106R0001
• Dimensions
  365 mm length × 255 mm width × 30 mm depth
• Weight
  1.13 kg
• Operating Temperature
  ‑5 °C to +70 °C
• Storage Temperature
  ‑40 °C to +85 °C
• Warranty
  1 year
• Product Status
  original

Technical Characteristics for ABB UNS0017A-P.V1 (HIEE305106R0001)

Power Supply

Logic Supply: 24 VDC supplied via the excitation control unit backplane

Power Consumption: Approximately 12 W

Field firing power is obtained from the excitation power circuit

Inputs

Control Signal Input: High-speed pulse commands transmitted from the main excitation controller

Monitoring Input: Feedback signals from the thyristor power section, including voltage and current sampling inputs

Diagnostic Input: Hardware fault detection signals sourced from the power unit

Outputs

Firing Pulse Output: Multiple isolated gate trigger pulses for SCR thyristors; supports configurable short-pulse and long-pulse modes

Status Output: Dry-contact fault relay output for external alarm interconnection

Diagnostic Signal Output: Internal diagnostic status feedback to the master excitation controller

Electrical & Isolation

Galvanic isolation is implemented between low-voltage control circuits and high-voltage firing power circuits

Isolation rating: 2000 V AC reinforced insulation

Pulse output driving capacity is optimally matched to gate-drive requirements of excitation-grade thyristors

Functional Features

Provides high-accuracy phase-shift firing control for three-phase thyristor rectifiers within generator excitation systems

Integrated hardware self-diagnosis function, capable of detecting missing pulses, circuit anomalies and power-section failures

On-board LED indicators display power-on, operational and fault conditions

Short-circuit protection is equipped for pulse output channels

Delivers fast dynamic response for excitation regulation

Developed for seamless interoperability with ABB UNITROL series excitation controllers

Application

Installed inside generator excitation cabinets, it regulates the firing angle of thyristor rectifiers to achieve excitation adjustment for synchronous generators.

Functions of ABB UNS0017A-P.V1 (HIEE305106R0001)

Thyristor Firing Pulse Generation This board generates isolated gate trigger pulses for three-phase SCR thyristors. It supports both short-pulse and long-pulse configurable modes and performs high-precision phase-shift firing control in accordance with command signals from the main excitation controller.

Signal Receiving and Processing It receives high-speed control commands from the ABB UNITROL main excitation controller. The board acquires voltage, current and operating status feedback from the thyristor power unit, and transmits hardware fault detection signals back to the master control system for real-time data interaction.

Fault Diagnosis and Real-Time Monitoring Integrated hardware self-diagnosis functions continuously detect abnormal conditions including pulse loss, output short circuits, circuit faults and power section failures. Onboard LED indicators visually display power-on status, operating status and system faults for on-site inspection.

Fault Alarm and Signal Feedback It provides dry-contact relay outputs for external fault alarm and system interlock, which can transmit fault signals to peripheral control systems. Meanwhile, it uploads all diagnostic status data to the main excitation controller for centralized fault recording and event logging.

Pulse Output Circuit Protection Built-in short-circuit protection is designed for all firing pulse channels. It effectively protects gate drive circuits from damage caused by abnormal short-circuit faults on the thyristor gate side.

Electrical Galvanic Isolation It achieves complete galvanic isolation between the low-voltage control circuit and high-voltage firing power circuit. This design enhances system anti-interference capability and improves overall operational safety and stability.

Dynamic Excitation Regulation Collaboration With fast signal response capability, the board coordinates with UNITROL excitation controllers to dynamically adjust the thyristor firing angle. It stabilizes the excitation current of synchronous generators and guarantees the reliable and stable operation of the entire generator excitation system.

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