IS210TREGH1B - Turbine Emergency Trip Terminal Board

SPECIFICATIONS:

Part Number: IS210TREGH1B
Manufacturer: General Electric
Series: Mark VIeS
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-6421I

FUNCTIONAL DESCRIPTION:

IS210TREGH1B is a Turbine Emergency Trip Terminal Board manufactured and designed by General Electric as part of the Mark VIeS Series used in GE Distributed Turbine Control Systems. The Gas Turbine Emergency Trip (TREG) terminal board supplies power to three emergency trip solenoids and is managed by the YPRO. These solenoids are connected between the TREG and TRPG terminal boards, with TREG providing the positive DC power and TRPG the negative. YPRO ensures emergency overspeed protection, and emergency stop functions, and governs the 12 relays on TREG. Among these relays, nine are organized into three groups of three to vote on inputs controlling the trip solenoids. The following board types are compatible with the YPRO in a Mark VIeS SIS:

• S1B is the primary version for 125 V dc applications. Control power from the JX1, JY1, and JZ1 connectors are diode combined to create redundant power on the board for status feedback circuits and powering the economizing relays. Power separation is maintained for the trip relay circuits.

• S2B is used for 24 V dc applications. All other features are the same as S1B. In redundant TREG applications, it is typical to find one H3B and one H4B board used together.

OPERATION:

TREG is fully managed by the I/O controller, with its only connections to the control modules being the J2 power cable and the trip solenoids. In simplex systems, a third cable from J1 connects to the TSVO terminal board, enabling a servo valve clamp function during a turbine trip.

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FREQUENTLY ASKED QUESTIONS:

What controls the TREG terminal board?

TREG is controlled entirely by the I/O controller, with no direct control from other modules except through the trip solenoids and the J2 power cable.

What is the role of YPRO in the TREG system?

YPRO oversees emergency overspeed protection and stop functions. It also controls the 12 relays on TREG, including those responsible for input voting to activate the trip solenoids.

How are trip solenoids connected in the system?

Up to three trip solenoids can be connected between the TREG and TRPG terminal boards, ensuring coordinated trip functionality.

What happens in simplex systems during a turbine trip?

In simplex systems, a third cable from J1 on TREG connects to the TSVO terminal board to enable the servo valve clamp function during a turbine trip.