IC3600STKH1B - Temperature Control Board

SPECIFICATIONS

Part No: IC3600STKH1B
Manufacturer: General Electric
Function: Temperature Control Board
Series: Mark I and II
Repair: 3-7 Day
Availability: In Stock
Country of Manufacturer: United States (USA)

Functional Description

IC3600STKH1B is a Temperature Control Board developed by GE. It is a part of Mark I and II control system.The Overtemperature system is a critical safety feature designed to monitor and protect the turbine from potential thermal damage. It operates through two separate channels, each of which monitors temperature inputs, typically from thermocouples. These thermocouples are either a single unit or a set of three, and are separate from the twelve control thermocouples used for normal operational monitoring of the turbine. This additional layer of redundancy ensures that even if one set of sensors fails, the system can still function and detect overheating.

Features

• Dual Channel Configuration: The overtemperature system is configured with two independent channels for monitoring the temperature. This dual-channel setup helps ensure that temperature data is continuously and reliably available, even if one channel experiences a failure.
• Thermocouple Inputs: Each channel of the overtemperature system receives input from thermocouples. These thermocouples measure the temperature at critical points in the turbine. The redundancy built into the system ensures that the failure of a single thermocouple will not compromise the protection provided by the overtemperature system.
• Comparator Mechanism: A comparator is used to compare the readings from the two overtemperature channels and the main control channel. The comparator continuously monitors for any discrepancies between the temperature readings. If the difference between the channels exceeds a preset threshold (the allowed value), it indicates that a potentially dangerous overtemperature condition has occurred. In such cases, the system will trigger an alarm to alert operators of the issue.
• Alarm Activation: The alarm system is designed to alert operators when discrepancies between the temperature readings from the overtemperature channels are detected. This ensures that operators can take immediate action to prevent the turbine from reaching damaging temperature levels.
• Open Thermocouple Failure: If one of the overtemperature channels experiences an open thermocouple failure (where the thermocouple becomes disconnected or fails to function), the system will still allow the turbine to continue operating. This is because the second channel is still functional, and the system remains protected. The failure of a single channel does not immediately compromise the overtemperature protection.
• Complete System Failure: However, if both overtemperature channels fail open, meaning both thermocouples stop functioning or become disconnected, the system will no longer be able to monitor the temperature accurately. In this scenario, the system will trigger a trip to shut down the turbine. This is a safeguard to ensure that the turbine does not continue operating in an unsafe condition where temperature monitoring is no longer available.

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FREQUENTLY ASKED QUESTIONS

What is IC3600STKH1B?
It is a Temperature Control Board developed by GE.

How does the Overtemperature system work?
The system consists of two separate channels, each receiving input from one or more thermocouples. A comparator compares the temperature data from both channels and the control channel. If the temperature discrepancy exceeds a preset value, the system activates an alarm to notify the operator.

What happens if one of the overtemperature channels fails?
If one of the overtemperature channels fails, the system will still allow the turbine to continue operating, as long as the other channel remains functional. This ensures that the turbine can continue to run safely even if a single thermocouple or channel malfunctions.