DS3820CDAA1 - Control Display

SPECIFICATIONS

Part No.: DS3820CDAA1
Manufacturer: General Electric
Series: Mark IV
Product type: Control Display
Repair: 3-5 Days
Availability: In Stock
Country of Manufacture: United States (USA)

Functional Description

DS3820CDAA1 is a Control Display developed by GE. It is a part of Mark IV control system. The Normal Display is the primary interface that operators use to monitor key gas turbine parameters. This display is crucial for the safe and efficient operation of the turbine, as it provides real-time data on essential metrics. Operators can select this display mode by pressing the Normal switch.

Types of Normal Displays

There are three types of Normal Displays, each corresponding to a different operating mode of the gas turbine- STARTUP STATUS, RUNNING STATUS, and SHUTDOWN STATUS. The control system automatically selects the appropriate display based on the current operating mode. Although the format of each display is similar, their content varies slightly to reflect the specific needs of each mode.

• STARTUP STATUS Display: This display is used during the startup phase of the gas turbine. One of its unique features is showing which flame scanners have detected a flame in the combustion chamber. This information is critical for ensuring that the ignition process is proceeding correctly.
• RUNNING STATUS Display: During normal operation, the RUNNING STATUS display is used. Unlike the STARTUP STATUS display, it does not show flame detection information because the presence of a flame is assumed while the turbine is running. Instead, this display will trigger an alarm message to warn the operator if a flame is lost on any channel during operation. This immediate feedback helps prevent potential damage or shutdowns due to flame loss.
• SHUTDOWN STATUS Display: The SHUTDOWN STATUS display is used during the shutdown phase of the gas turbine. It provides specific information and parameters relevant to safely shutting down the turbine.

Display Content and Format

The Normal Displays include several typical display fields that provide operators with comprehensive information about the gas turbine’s status. These fields are standardized across all Normal Displays for consistency and ease of use. The key parameters displayed typically include:

• Temperature Readings: Indicators for various temperature points within the turbine.
• Pressure Levels: Monitoring of critical pressure levels to ensure they are within safe operating ranges.
• Speed Indicators: Displays the turbine’s rotational speed.
• Fuel Flow Rates: Monitors the fuel consumption rates during different phases of operation.
• Vibration Levels: Tracks vibration levels to detect any anomalies that could indicate mechanical issues.
• Operational Alarms: Displays any current alarms or warnings that require operator attention.

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Frequently Asked Questions

What is DS3820CDAA1?
It is a Control Display developed by GE

How does the control system determine which Normal Display to show?
The control system automatically selects the appropriate Normal Display based on the current operating mode of the gas turbine (startup, running, or shutdown).

What information is shown on the STARTUP STATUS Display?
The STARTUP STATUS Display shows key startup parameters, including which flame scanners have detected a flame in the combustion chamber

What information is shown on the RUNNING STATUS Display?
The RUNNING STATUS Display shows parameters relevant to normal operation. It does not display flame detection information but will trigger an alarm message if a flame is lost on any channel while the turbine is running