GE IS200VPROH2B | Mark VI Emergency Turbine Protection Board

Description

• Model & Brand: IS200VPROH2B / GE General Electric
• Series: Mark VI Speedtronic
• Part Type: VPRO Emergency Turbine Protection Board
• Core Function: Independent emergency overspeed and turbine protection
• Architecture: Triple-redundant VPRO protection system
• Thermocouple Inputs: 9 at the TPRO system level; 3 channels per VPRO section
• Analog Inputs: 3 total process/synchronization-related current inputs at the VPRO system interface
• MPU Pulse Range: 2 Hz to 20 kHz
• Input Filter: 4 ms hardware filtering
• Update Rate: Up to 100 Hz reported by current technical records
• Onboard Power: Generates 5 VDC and 28 VDC from cabinet power input
• Front Indicators: RUN, FAIL, STATUS
• Estimated Physical Size: Exact GE mechanical dimensions for the individual IS200 board are not reliably established in the reviewed documentation
• Estimated Shipping Weight: Approx. 1.5–2.0 kg packed; confirm actual packed weight before freight quotation
• What’s in the Box: IS200VPROH2B board, ESD shielding, rigid cushioning, identification materials; cables or mounting hardware only when explicitly included
• Installation: Mark VI VPRO protection module
• Storage Priority: ESD protection, dry storage, revision traceability, and protection of front/rear connectors

GE’s Mark VI system guide identifies VPRO as an independent emergency overspeed protection system using triple-redundant VPRO boards. The guide also identifies TPRO and TREG as the associated termination boards and specifies the VPRO input architecture.

Product Introduction

Emergency turbine protection is a separate protection layer from the normal Mark VI control logic. The IS200VPROH2B is a VPRO protection board used with TPRO and TREG to provide independent emergency overspeed protection for gas and steam turbines. Three VPRO sections operate in a triple-redundant arrangement, with each section independently processing its protection inputs before trip commands are passed to the TREG relay circuitry. GE’s system documentation specifically states that the protection system is separate from the turbine control system.

The H2B version is also identified in current technical records as a lower-power VPRO configuration that can support a single TREG board, while higher-power variants are used when additional TREG capacity is required. The board has two backplane connectors, front-panel field interfaces, a dedicated power connection, and status LEDs; its onboard supply generates 5 VDC and 28 VDC from cabinet power.

Core Technical Specifications

GE’s system guide provides the most useful verified architecture data: VPRO uses three passive speed inputs, generator/bus voltage inputs, thermocouple inputs, current/voltage inputs, trip interlocks, and an emergency-stop input.

GE IS200VPROH2B

🚨 Global Compliance & Industry Certifications

Certification should be tied to the complete GE Mark VI protection assembly and exact installation configuration, not inferred from the PCB alone.

• CE Mark: May apply to the complete Mark VI equipment. Do not claim independent CE conformity for IS200VPROH2B without GE documentation covering the applicable assembly.
• UL/cUL: No reliable evidence was established for an independent UL/cUL listing of this exact PCB.
• ATEX / IECEx: Do not assume hazardous-area approval for the individual board. Any Zone 2 or related certification depends on the complete approved Mark VI installation, enclosure, wiring, and equipment combination.
• Class I, Division 2: Applicability is installation-specific and should be confirmed from the certified Mark VI configuration.
• Marine Approvals: No independent DNV, ABS, or Lloyd’s Register approval was established for this exact board from the reviewed records.
• EMC: The board’s communication and protection circuits should be evaluated as part of the complete Mark VI cabinet.

Why this matters: The VPRO participates directly in emergency turbine shutdown logic. A board that is electrically functional but not supported by the required system certification package can still create a serious audit issue.

Verify specific lot certifications with OEM.

🚨 Long-Term Storage & Asset Preservation Guide

Keep the VPRO sealed in an ESD shielding bag. The board has multiple connectors, an onboard power section, processor electronics, and diagnostic circuitry. Protect the connector pins and front-panel interfaces from impact during storage and internal warehouse movement.

Keep relative humidity below 60% where practical. Avoid condensation and repeated temperature cycling. VPRO hardware can remain visually clean while connector oxidation or aged power components later produce intermittent protection faults.

Preserve the firmware and revision record with the physical board. Unlike a passive terminal board, VPRO contains active processing and protection logic. Record the exact part number, hardware revision, software/firmware information when readable, and the VPRO system position in the asset file (X, Y, or Z section where applicable). GE’s architecture is explicitly triple redundant, so section identity matters during maintenance.

Before energization after extended storage, allow the sealed package to stabilize to cabinet temperature. Inspect the backplane connectors, power connector, ribbon interfaces, LEDs, solder joints, capacitors, and board surface.

Physical Installation Prerequisites

• Host System: Install only in the approved GE Mark VI VPRO protection module.
• Protection Architecture: Confirm whether the site uses three VPRO sections and identify the board’s intended X/Y/Z protection position.
• Associated Termination: Verify the matching TPRO and TREG boards before installation.
• Power Isolation: Use turbine shutdown, electrical isolation, and lockout/tagout procedures before accessing the protection cabinet.
• Power Input: Verify the cabinet PDM supply and the correct VPRO power connection before energization.
• Trip Wiring: Confirm all TREG and trip-solenoid connections against the approved Mark VI drawing.
• MPU Inputs: Label and verify all speed-pickup circuits before disconnecting them.
• Thermocouples: Confirm the correct exhaust-temperature input mapping and polarity.
• Generator/Bus Voltage: Verify PT wiring and synchronization-related connections before commissioning.
• IONet: Inspect the Ethernet/IONet interface and cable condition.
• Grounding: Preserve the cabinet protective-earth and signal-reference arrangement.
• Clearance: Maintain enough service access for the front connectors and rear backplane connections. Follow the actual GE cabinet drawing rather than using a generic clearance number.
• Cooling: Keep cabinet airflow paths clear around the VPRO assembly.
• ESD: Use a grounded wrist strap and ESD-safe work surface.
• Final Protection Test: Perform the approved overspeed, interlock, and emergency-trip verification before returning the turbine to service.

Buyer’s FAQ

Q1. What HS Tariff Code should be used for IS200VPROH2B?
Do not assign a definitive HS code from “turbine protection board” alone. This is a dedicated industrial control/protection PCB, and customs classification can vary by jurisdiction and declared function. The broker should review the technical description, invoice wording, electrical role, and destination-country tariff schedule before shipment.

Q2. What Country of Origin documentation should accompany the shipment?
Use the actual manufacturing origin supported by supplier or manufacturer records. A U.S. shipping location does not, by itself, establish COO. Retain the commercial invoice, packing list, COO statement or certificate where applicable, exact part-number photograph, revision information, and serial/lot records.

Q3. Can be hot-swapped?
Treat it as a controlled power-off replacement unless the exact GE maintenance procedure explicitly permits live intervention. This board belongs to an emergency protection system and interfaces with trip circuitry, speed pickups, thermocouples, synchronization inputs, and IONet communication. GE’s Mark VI architecture treats the VPRO as an independent turbine protection layer.

Q4. Does a New Original include the latest firmware pre-loaded?
Do not assume that it does. VPRO is an active protection processor, and configuration/software compatibility matters. Current technical records identify the board as a Mark VI protection processor with IONet communications and dedicated diagnostics. Before accepting surplus stock, record the hardware revision and any available firmware/software identification, then compare it with the installed protection system.

Q5. What warranty and shipping controls should be required?
The quotation should identify the exact revision, physical condition, serial or lot information where available, warranty period, return procedure, and pre-shipment test scope. For a protection board, require documented power-up diagnostics, communication checks, representative protection-input testing, and serial-number traceability. Use ESD shielding, rigid connector protection, moisture control, and shipment insurance based on the documented replacement value.