IS210TREGH4B - Turbine Emergency Trip Terminal Board

SPECIFICATIONS:

Part Number: IS210TREGH4B
Manufacturer: General Electric
Series: Mark VI
Product Type: Turbine Emergency Trip Terminal Board
Number of Channels: 24
Number of inputs: 12
Number of trip solenoids: 3
Number of outputs: 125 V dc
Technology: Surface Mount
Suppression: MOV across the solenoid
Trip interlock isolation: Optical isolation to 1500 V
Dimensions: 17.8 cm wide x 33.02 cm
Operating Temperature: 30 to 65°C
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH-6421M

FUNCTIONAL DESCRIPTION:

IS210TREGH4B is a Turbine Emergency Trip Terminal Board manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic Turbine Control Systems. A Turbine Emergency Trip Terminal Board (TETTB) is a critical safety device used in power plants and industrial facilities that utilize turbines for energy production. Its primary function is to provide a fast and reliable way to shut down a turbine in the event of an emergency. Here’s a detailed explanation of what a Turbine Emergency Trip Terminal Board is and its key features:

FUNCTIONS:

• Emergency Shutdown: The primary function of the TETTB is to initiate an immediate shutdown of the turbine when an emergency condition is detected. This helps prevent damage to the turbine and associated equipment and ensures the safety of personnel.

• Signal Processing: It processes various input signals from different sensors and systems that monitor the turbine’s operating conditions. These signals can include vibration levels, temperature, pressure, and other critical parameters.

• Alarm and Indication: The board provides visual and audible alarms to alert operators of an emergency condition. It also displays the status of the turbine and the trip signals.

OPERATION:

• Monitoring: The Turbine Emergency Trip Terminal Board continuously monitors input signals from sensors and systems that track the turbine’s operating conditions.

• Signal Processing: When an input signal exceeds predefined safety thresholds (e.g., excessive vibration or high temperature), the control circuits process this information.

• Trip Activation: If an emergency condition is detected, the control circuits activate the relays, which in turn disconnect the turbine from its power source, effectively shutting it down.

• Alarm Activation: Simultaneously, alarms and indicators are activated to notify operators of the emergency trip and the reason behind it.

• Post-Trip Actions: After a trip, operators can investigate the cause, reset the trip circuits, and take necessary corrective actions before restarting the turbine.

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FREQUENTLY ASKED QUESTIONS:

How does the Turbine Emergency Trip Terminal Board detect emergency conditions?

The TETTB continuously monitors input signals from sensors that track the turbine's operating parameters, such as vibration, temperature, and pressure. When any of these signals exceed predefined safety thresholds, the Turbine Emergency Trip Terminal Board processes this information and initiates an emergency trip.

What components are included in a Turbine Emergency Trip Terminal Board?

A Turbine Emergency Trip Terminal Board typically includes terminal blocks for wiring connections, relays for switching electrical circuits, indicators and alarms for visual and audible alerts, control circuits for signal processing, and a power supply with battery backup to ensure reliable operation.

How does the Turbine Emergency Trip Terminal Board initiate an emergency trip?

Upon detecting an unsafe condition, the control circuits in the TETTB activate relays that disconnect the turbine from its power source. This effectively shuts down the turbine to prevent damage and ensure safety. Simultaneously, alarms and indicators are activated to notify operators of the emergency.