IC3600SOTJ1 - GE Over Temperature Protection Card

SPECIFICATIONS

Part No.: IC3600SOTJ1
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Product Type: Over Temperature Protection Card
Availability: In Stock
Series: Mark I and II

Functional Description

IC3600SOTJ1 is an Over Temperature Protection Card developed by GE. The module is a part of Mark I and II series. It is a part of overtemperature protection system, specifically for ensuring safe temperature control and protection against overheating. This system prevents damage due to excessive heat in the turbine exhaust.

Overview of the Overtemperature Protection System

The overtemperature protection system operates with two separate channels, each monitoring the average temperature from three thermocouples placed in the turbine's exhaust duct. These channels are designed to ensure that any excessive heat is quickly detected and mitigated. The system is comprised of:

• Two SOTJ cards (one for each channel)
• SPOA card
• Temperature averaging cabinet (same cabinet used in both channels)
• STKJ amplifier card (each channel has its own STKJ amplifier located in the temperature averaging cabinet)

Key Functions of the Card

There are two SOTJ cards, one for each overtemperature channel, with identical functions. Below are the five key functions provided by the SOTJ card:

• Overtemperature Trip Function: This function generates a latched signal when the turbine's exhaust temperature exceeds a preset value. It takes into account the exhaust temperature, ambient compensation (PCDN), pressure sensor failure (PCDF), and peak reserve diagnostics. When the total temperature surpasses the allowable limit, the system triggers and latches the signal. The trip can only be reset through a push-button interface (PBI).
• Overtemperature Alarm: This alarm indicates that the turbine's exhaust temperature is approaching the overtemperature trip point. It is adjustable via a resistor (R2), allowing for custom temperature settings that warn operators before reaching a critical trip condition.
• Differential Alarm: This function compares the readings between the two overtemperature channels. If there is a significant temperature difference (adjustable between 20°F and 100°F), an alarm is triggered. This allows the system to identify abnormal discrepancies between the two channels. Adjustments are made using resistor R3.
• System Failure Trips: This function provides a latched output when all thermocouples in the system read a "cold" condition, indicating a failure in the temperature monitoring system. This protective measure ensures that if the system is not accurately reading temperatures, a trip will occur to safeguard the turbine.
• Transient Load Capability: The SOTJ card allows the turbine to take on extra transient loads below 100% speed conditions. This function, however, is not used in MS7001C turbine models.
  
  

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

Frequently Asked Questions

What is IC3600SOTJ1?
It is an Over Temperature Protection Card developed by GE under Mark I and II series.

How does the Overtemperature Trip function work?
The Overtemperature Trip function sums the exhaust temperature with factors like ambient compensation (PCDN), pressure sensor failure (PCDF), and peak reserve diagnostics. If the combined value exceeds the allowable limit, the system triggers and latches the output, which can only be reset manually with the push-button interface (PBI).

What happens when the Overtemperature Alarm is triggered?
When the Overtemperature Alarm is triggered, it indicates that the turbine’s exhaust temperature is approaching the preset trip point. This allows operators to take action before the turbine reaches a critical condition.

What does the Differential Alarm do?
The Differential Alarm compares the temperature readings between the two channels. If there is a difference of 20oF to 100oF between the channels (adjustable by R3), it triggers an alarm to indicate a discrepancy.