IS200TREGS5B - Turbine Emergency Trip Terminal Board

SPECIFICATIONS:

Part Number: IS200TREGS5B
Manufacturer: General Electric
Series: Mark VIe
Product Type: Turbine Emergency Trip Terminal Board
Number of Trip Solenoids: 3
Trip Solenoid Rating H1: 125 V DC, 1 A
Trip Interlock Excitation H1: 125 V DC
Number of outputs: 125 V dc
Power supply voltage: 125 V dc
MPU Pulse Rate Range: 2 Hz to 20 kHz
Technology: Surface Mount
Common Mode Voltage Range: ±5 V
Size: 17.8 cm wide x 33.02 cm high
Operating Temperature: 30 to 65°C
Repair: 3-7 Days
Availability: In Stock
Country of Origin: United States
Manual: GEH-6421L

FUNCTIONAL DESCRIPTION:

IS200TREGS5B is a Turbine Emergency Trip Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Turbine Control Systems. TREG provides power to three emergency trip solenoids and is controlled by the I/O controller. Up to three trip solenoids can be connected between the TREG and TRPG terminal boards. TREG provides the positive side of the de power to the solenoids, and TRPG provides the negative side. The I/O controller provides emergency overspeed protection, emergency stop functions, and controls the 12 relays on TREG, nine of which form three groups of three to vote inputs controlling the three trip solenoids. There are several board types as follows:

• The HIA version is not used for new production and is replaced by HIB.
• HIB is the primary version for 125V de 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.
• H2B is used for 24v de applications. All other features are the same as HIB. H3B is a special version of H1B for use in systems with redundant TREG boards. Feedback circuit and economizing relay power are provided only by the JXI connector.
• H4B is a special version of H1B for use in systems with redundant TREG boards. Feedback circuit and economizing relay power is provided only by the JYI connector.
• HSB is a special version of H1B for use in systems with redundant TREG boards. Feedback circuit and economizing relay power are provided only by the JZ1 connector.
• In redundant TREG applications, it is typical to find one H3B and one H4B board used together. System repairs must be done with the correct board type to maintain the control power separation designed into these systems.

In redundant TREG applications, it is typical to find one H3B and one H4B board used together. System repairs must be done with the correct board type to maintain the control power separation designed into these systems.

INSTALLATION:

The IS200TREGS5B TREG board is designed for straightforward integration with the turbine control system. The three trip solenoids, along with the economizing resistors and the emergency stop, are wired directly to the first I/O terminal block on the board. This configuration ensures that the emergency trip functions are directly connected to the TREG board for rapid response during turbine shutdown events, providing reliable and efficient actuation of the solenoids.

The board accommodates up to seven trip interlocks, which can be wired to the second terminal block. These interlocks provide additional system safety by allowing multiple conditions or devices to influence the turbine trip logic. Proper wiring of these interlocks ensures coordinated operation with other safety systems and maintains the integrity of the turbine emergency shutdown functions, preserving both equipment and operator safety.

OPERATION:

TREG is entirely controlled by the I/O controller, and the only connections to the control modules are the J2 power cable and through the trip solenoids. In simplex systems a third cable carries a trip signal from JI to the TSVO terminal board, providing a servo valve clamp function upon turbine trip. Both TRPG and TREG control the trip solenoids so that either one can remove power and actuate the hydraulics to close the steam or fuel valves. The nine trip relay coils on TREG are supplied with 28 V dc from the I/O controller. The trip solenoids are supplied with 125 V through plug J2, and draw up to 1 A with a 0.1 second L/R time constant.

Two series contacts from each emergency trip relay (ETR1, 2, 3) are connected to the positive 125 V dc feeder for each solenoid, and two series contacts from each primary trip relay (PTR1, 2, 3 in TRPG) are connected to the negative 125 V dc feeder for each solenoid. An economizing relay (KE1, 2, 3) is supplied for each solenoid with a normally closed contact in parallel with the current-limiting resistor. These relays are used to reduce the current load after the solenoids are energized. The ETR and KE relay coils are powered from a 28 V dc source from the I/O controller. Each PPRO I/O pack in each of the R8, S8, and T8 sections supplies an independent 28 V dc source.

WOC proudly maintains the largest inventory of OEM replacement parts for GE Speedtronic Control Systems, ensuring that you have quick and reliable access to the components you need to keep your operations running smoothly. Whether you require brand-new, unused parts or professionally rebuilt boards, we offer solutions that meet strict quality standards and come with a comprehensive warranty for your peace of mind. Our extensive stock allows us to support a wide range of GE Speedtronic modules and components, helping minimize downtime and maintain the efficiency of your turbine and control systems.

We specialize in the repair and refurbishment of faulty boards, providing expert diagnostics and service to restore your systems to optimal performance. Our dedicated team of automation specialists is available 24/7, ready to assist with technical support, troubleshooting, and guidance for all your OEM requirements. For inquiries regarding pricing, availability, or repair services, you can reach our team directly by phone or email, and we will ensure prompt, professional, and personalized assistance.

FREQUENTLY ASKED QUESTIONS:

What is the TREG board?

The TREG (Turbine Emergency Trip Terminal Board) is a critical component in GE Mark VIe Distributed Control Systems. It is designed to manage emergency trips and ensure safe turbine shutdowns under abnormal conditions. The board helps protect the turbine, auxiliary equipment, and personnel by quickly actuating solenoids and relays.

How many trip solenoids are supported?

Each TREG board contains three trip solenoids, and an I/O controller can accommodate a total of six solenoids. These solenoids are responsible for activating trips in response to protection signals. They are rated to handle the full load of the turbine protection system.

What is the solenoid response time?

The solenoids have an L/R time constant of 0.1 seconds, enabling rapid activation during emergency trips. MOV (Metal Oxide Varistor) suppression is used across the solenoids to prevent voltage spikes and ensure reliable operation.