IS200TRELH2A - Large Steam Turbine Emergency Trip Terminal Board

SPECIFICATIONS:

Part Number: IS200TRELH2A
Manufacturer: General Electric
Series: Mark VI
Product Type: Large Steam Turbine Emergency Trip Terminal Board
Number of Channels: 24
Number of inputs: 12
Number of outputs: 125 V dc
Power supply voltage: 125 V dc
Number of trip solenoids: 3
MPU Pulse Rate Range: 2 Hz to 20 kHz
Technology: Surface Mount
Common Mode Voltage Range: ±5 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:

IS200TRELH2A is a Large Steam 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. The Large Steam Turbine Emergency Trip (TREL) terminal board is used for emergency overspeed protection for large steam turbines. TREL is controlled by the VPRO in the protection module and provides power to three emergency trip solenoids, which can be connected between the TREL and TRPL terminal boards. TREL provides the positive side of the 125 V dc to the solenoids and TRPL provides the negative side. I/O controller provides emergency overspeed protection, and emergency stop functions, and controls the nine relays on TREL, which form three groups of three to vote inputs controlling the three trip solenoids. The three groups are called ETR (emergency trip) 1, 2, and 3.

INSTALLATION:

The three trip solenoids are wired to the first I/O terminal block. Up to seven trip interlocks are wired to the second terminal block. The wiring connections are shown in the following figure. Connector J2 carries three power buses from TRPL, and JH1 carries the excitation voltage for the seven-trip interlocks.

OPERATION:

TREL is entirely controlled by the VPRO protection module, and the only connections to the turbine control are the J2 power cable and the trip solenoids. In simplex systems, a third cable carries a trip signal from J1 to the TSVO terminal board, providing a servo valve clamp function upon turbine trip. Both TRPL and TREL control the trip solenoids 1 and 2 so that either one can remove the power and actuate the hydraulics to close the steam or fuel valves. ETR3 is set up to supply power to trip solenoid #3. The nine trip relay coils on TREL are supplied with 28 V dc from the I/O controller. The trip solenoids are supplied with 125 V dc (or 24 V dc) through plug J2 and draw up to 1 A with a 0.1 second L/R time constant.

WOC has the largest stock of GE Speedtronic Control System Replacement Parts. We can also repair your faulty boards. WORLD OF CONTROLS can also supply unused and rebuilt backed-up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on any parts and repairs, kindly get in touch with our team by phone or email.

FREQUENTLY ASKED QUESTIONS:

What is a large steam turbine emergency trip terminal board?

The large steam turbine emergency trip terminal board is a critical component of steam turbine systems. It serves as a centralized control panel for emergency shutdown procedures in the event of a malfunction or dangerous condition.

What is the purpose of the emergency trip terminal board?

The primary purpose of the emergency trip terminal board is to ensure the safe and rapid shutdown of a large steam turbine in case of emergencies such as equipment failure, over-speed conditions, or other hazardous situations. It helps prevent catastrophic damage to the turbine and surrounding equipment.

How are boards packaged for shipment from WOC?

Parts are placed in antistatic packets and securely packed in ESD boxes cushioned with ESD Foam designed to safeguard electrical components.