IC3603A277B - Circuit Card

SPECIFICATIONS

Part No: IC3603A277B
Manufacturer: General Electric
Function: Circuit Card
Series: Mark I and II
Repair: 3-7 Day
Availability: In Stock
Country of Manufacturer: United States (USA)

Functional Description

IC3603A277B is a Circuit Card developed by GE. It is a part of Mark I and II control system.

System First Fault Detection Mode

First Fault Detection Mode, a specialized operational mode, serves a critical role in turbine control systems under specific conditions. Here's an expanded explanation of its function and the scenarios in which it is employed:

• Purpose of First Fault Detection Mode: The First Fault Detection Mode is designed to address two primary conditions:
  
  • Condition 1: When the turbine experiences random trips caused by signals that occur too rapidly for the annunciator to discern which one occurred first.
  • Condition 2: When trip signals are not directly conveyed to the annunciator, necessitating an alternative way to identify and react to these signals.
• Activation Timing: This mode can be selected at any point after the turbine control circuit 4 has been engaged (indicated by the illumination of the 4 LED). Consequently, it allows for first fault detection both during the turbine's startup sequence and its run sequence.
• Signal Status Change: When the First Fault Detection Mode is engaged, it introduces a specific behavior: only the signal status LED indicators associated with the first trip signal into the VMPA or VMPC PWB will change states. In contrast, all other trip signal indicators will be inhibited from changing their states.
• Determining Which Signal Tripped the Turbine: The primary objective of this mode is to determine which of two signals caused the turbine to trip. To make this determination, a minimum delay of 1 millisecond (or more) between the two signals is necessary. This time gap is crucial for accurately identifying the order in which the signals were received and acted upon.
• Noise Filtering Mechanism: The First Fault Detection Mode incorporates noise filtering as a safeguard against high-frequency noise that could otherwise trigger the first fault detection circuit inadvertently. This feature ensures that only valid and intentional signals are considered in the fault detection process, reducing the risk of false positives.

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FREQUENTLY ASKED QUESTIONS

What is IC3603A277B?
It is a Circuit Card developed by GE

What is the primary purpose of the First Fault Detection Mode in turbine control systems?
The First Fault Detection Mode serves as a specialized operational mode designed to address specific conditions. Its main purpose is to identify the initial cause of turbine trips under certain circumstances.

Under what conditions is the First Fault Detection Mode typically used?
Condition 1-When the turbine experiences random trips due to signals occurring too rapidly for the annunciator to determine their order, Condition 2-When trip signals are not directly conveyed to the annunciator, necessitating anan alternative method to identify and respond to these signals.

When can the First Fault Detection Mode be activated?
This mode can be engaged at any point after the turbine control circuit 4 is activated, which is indicated by the illumination of the 4 LED. As a result, it enables first fault detection during both the turbine's startup sequence and its run sequence.