IS200VPROH1B - Turbine Protection Board

SPECIFICATIONS:

Part Number: IS200VPROH1B
Manufacturer: General Electric
Function: Turbine Protection Board
Series: Mark VI
Number of Inputs: 3
Number of Outputs: 6
Operating temperature: -30 to 65 �C
Power Supply Voltage: 125 V dc
Technology: Surface Mount
Board Size: 33.0 cm high x 17.8 cm
Availability: In Stock
Country of Origin: USA
Manual: GEH-6421J

FUNCTIONAL DESCRIPTION:

IS200VPROH1B is a Turbine Protection Board manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic gas turbine control systems. An independent emergency Overspeed prevention system is offered by the Turbine Protection Board (VPRO) and connected terminal boards (TPRO and TREG). The trip solenoids in the protection system are controlled by TREG through triple redundant VPRO boards that are housed in a module apart from the turbine control system. The diagrams depict the wiring from the TPRO and TREG terminal boards to VPRO.

The emergency trip feature is provided by the VPRO board in the Protection Module P. The TREG and TRPG terminal boards can connect up to three trip solenoids. The solenoids are supplied with the positive side of the 125 V dc by TREG and the negative side by TRPG. The turbine may trip on either board. Emergency Overspeed protection and emergency stop features are provided by VPRO. It manages the three trip solenoids, three vote inputs, and 12 relays on TREG, nine of which are organized into three groups.

Fig 1: VPRO Board

INSTALLATION:

• Turn off the VME processor I/O rack.
• After positioning the edge connectors with your hands, slide the VPRO board into place.
• Tighten the front panel's top and bottom captive screws.
• Turn on the VME rack and examine the front panel's top diagnostic lights.

OPERATION:

Emergency Overspeed (EOS) protection for the turbine using three VPRO boards is the main function of the protection module. Nine thermocouple inputs, three analog current inputs, and backup synchronization check protection are also included in VPRO, which is primarily designed to protect gas turbine exhaust from over-temperature.

Three entirely different and independent VPRO boards, designated R8, S8, and T8, ensure that the protection module is always triple redundant (originally named X, Y, and Z). Without endangering the protection system, any one of these boards can be powered down and replaced while the turbine is in operation. Each board has a unique I/O controller. Through the communications, test commands may be sent from the controller to the protection module, and the operator interface and controller can both monitor EOS system diagnostics. The VPRO board, which is the system's brain, maintains communications.

POWER SUPPLY:

There is an onboard power supply on each VPRO board. Using 125 V dc from the cabinet PDM, this produces 5 V and 28 V. Therefore, for great dependability, the complete protection module contains three power supplies. The J2 power cable and the trip solenoids are the only connections to the control modules since VPRO is solely in charge of controlling TREG. When a turbine trips in simplex systems, a third cable transmits a trip signal from J1 to the TSVO terminal board, which operates a servo valve clamp.

WOC maintains the largest inventory of replacement parts for GE Speedtronic control systems. Additionally, we offer warranty-backed unused and rebuilt boards as well as board repairs for your damaged ones. For your OEM needs, our team of professionals is available around-the-clock. We at WOC are happy to help you with any needs you may have in terms of automation. Please contact our team by phone or email for pricing and availability on any components and repairs.

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