DS3820PS3A1J - Power Supply

SPECIFICATIONS

Part No.: DS3820PS3A1J
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Product Type: Power Supply
Availability: In Stock
Series: Mark IV

Functional Description

DS3820PS3A1J is a Power Supply developed by GE. It is a part of the Mark IV control system. It provides precise control of turbine operations, including startup, shutdown, load management, and safety protocols. Control algorithms are designed for optimal efficiency and operational stability, ensuring smooth transitions between operational states. The Mark IV handles a wide range of analog and digital input/output signals for monitoring and controlling turbine parameters such as speed, temperature, pressure, and fuel flow.
Voting mechanisms are used for signal validation, enhancing accuracy and reliability.

Mark IV Field Changes

• The field change capability in turbine control systems is a crucial feature designed to facilitate necessary adjustments while ensuring system safety and stability. This capability allows for the fine-tuning of control settings, calibration of components, and updates to operational logic. Such adjustments are particularly important during installation, startup, and maintenance phases.
• Key areas requiring field changes include control algorithm constants (such as references and gains), position servos (which need accurate calibration), and sequencing logic (frequently adjusted during commissioning or upgrades). These updates help optimize turbine performance and adapt to specific operational conditions.
• To ensure safe and controlled modifications, the system incorporates several safeguards. Changes are protected by a unique password, restricting access to authorized personnel only. For operational turbines, a rate limiter prevents sudden or destabilizing changes to control constants. Servo calibration is restricted to non-operational modes such as off or crank, and sequencing logic updates are only allowed when the turbine is completely stopped. Additionally, critical parameters are bounded within safe ranges to avoid inadvertent errors.
• These measures provide a balance between operational flexibility and safety, making field changes manageable and secure. They ensure that the turbine control system remains reliable while enabling efficient customization and maintenance.

The WOC team is always available to help you with your Mark IV requirements. For more information, please contact WOC.

Frequently Asked Questions

What is DS3820PS3A1J?
It is a Power Supply developed by GE under the Mark IV series.

How is maintenance performed on the Mark IV?
Maintenance involves periodic checks, fault diagnosis, and replacement of any failing components. The system’s modular design and online diagnostic capabilities simplify maintenance tasks.

What are the key areas tested by the Mark IV diagnostics?
The self-tests cover PROM and BRAM checksums, RAM data tests, Signal voting (analog and logic), Power supply monitoring, Communication error detection, Thermocouple and analog I/O checks.