GE IS200TPROH1BBB | Mark VI Emergency Protection Terminal Board

Description

• Model & Brand: IS200TPROH1BBB | GE General Electric
• Series: Mark VI Speedtronic
• Part Type: Emergency Turbine Protection Termination Board
• Functional Acronym: TPRO
• Primary System: GE Mark VI turbine protection / VPRO architecture
• Physical Dimensions: Approx. 330 × 178 mm board envelope; exact assembly depth varies with terminal blocks and installed hardware. ([turn589787search5])
• Estimated Net Weight: Approx. 0.3–0.8 kg, depending on board configuration and terminal hardware. ([turn589787search6] [turn589787search7])
• Estimated Shipping Weight: Approx. 1.0–1.5 kg with ESD protection and rigid packaging
• What’s in the Box: IS200TPROH1BBB board; ESD shielding; protective carton; terminal blocks and mounting hardware only when specifically included
• I/O Pack Capacity: 3 PPRO I/O packs in the documented TPRO configuration
• Voltage Inputs: Generator and bus potential-transformer signals
• Other Inputs: Thermocouples and magnetic speed-pickup signals
• Internal Interfaces: Three dedicated connections from TPRO to the VPRO protection boards

Product Introduction

Emergency overspeed protection depends on a separate signal path from the normal turbine-control system. GE IS200TPROH1BBB is a TPRO Emergency Protection Terminal Board in the Mark VI architecture. It terminates and distributes critical signals to the VPRO protection system, including magnetic speed pickups, generator voltage, bus voltage, and temperature inputs. GE system documentation describes the TPRO/VPRO arrangement as an independent emergency overspeed protection system, with triple-redundant VPRO boards receiving their respective signals from the TPRO termination board. ([turn589787search21] [turn589787search3])

The TPRO board is therefore not an ordinary digital termination card. The exact wiring, connector assignment, terminal configuration, and PPRO/VPRO relationship matter during replacement. The documented architecture uses three VPRO channels, with each PPRO I/O pack receiving the required protection signals through the TPRO assembly. ([turn589787search21]) A like-for-like IS200TPROH1BBB replacement can preserve the established emergency-protection wiring and cabinet configuration, but a different TPRO revision should never be approved solely because the PCB dimensions appear similar (the trip function is safety-critical).

Core Technical Specifications

The Mark VI system guide identifies TPRO as the termination board serving the VPRO turbine-protection system and shows its speed, voltage, and thermocouple signal connections. ([turn589787search21] [turn589787search3]) Current specialist records identify the IS200TPROH1BBB designation and report the physical dimensions and environmental figures above. ([turn589787search5] [turn589787search7])

GE IS200TPROH1BBB

🚨 Global Compliance & Industry Certifications

The forms part of a turbine emergency-protection system. Certification must therefore be established against the actual GE Mark VI installation rather than inferred from the PCB alone.

• CE Mark: No standalone CE declaration specific to was established from the records reviewed.
• UL/cUL: No independent UL/cUL listing specific to this exact board was established.
• ATEX/IECEx: No standalone ATEX or IECEx certificate was established for .
• Marine Approvals: No specific DNV, ABS, or Lloyd’s Register approval was established.
• EMC: The complete Mark VI cabinet installation determines applicable EMC performance through grounding, shielding, cable routing, and enclosure design.
• Hazardous-Area Installation: Suitability depends on the complete turbine-control installation and applicable enclosure/field-wiring requirements.
• Safety Function: TPRO participates in an independent emergency protection system; replacing it with an undocumented substitute can affect the validated trip architecture.

The Mark VI system documentation explicitly describes the TPRO/VPRO arrangement as an independent emergency overspeed protection system, separate from normal turbine control. ([turn589787search3])

Verify specific lot certifications with OEM.

🚨 Long-Term Storage & Asset Preservation Guide

Keep the sealed in an ESD shielding bag. The board carries multiple terminal interfaces, signal-conditioning components, relays, capacitors, and connectors. Long-term exposure to airborne contaminants can degrade contacts even when the PCB remains visually clean.

Control humidity below roughly 60% RH where practical. Avoid condensation cycles, especially when transferring the board between cold storage and a warm maintenance area. Allow the sealed package to reach ambient temperature before opening.

Protect the terminal blocks and DC-37 interfaces from mechanical stress. Do not stack heavy boards on the terminal assemblies or allow connector shells to bear the weight of the package. A bent contact can compromise one protection channel without producing an obvious PCB defect.

Preserve the installed configuration record. Photograph the complete board, terminal wiring, connector assignments, jumper settings where fitted, and board revision. Keep the photographs with the warehouse asset record.

Do not apply a generic capacitor-reforming schedule. No specific reforming interval for was established from the reviewed documentation. A controlled electrical inspection and system-level functional test before deployment provide a better release criterion.

Physical Installation Prerequisites

The is an internal Mark VI protection termination board, not a DIN-rail module.

Before installation:

• Confirm the host system is a GE Mark VI installation using the TPRO/VPRO protection architecture.
• Verify the complete nameplate and board revision.
• Document every field terminal before removing the existing board.
• Label all three VPRO-related cable connections before disconnection.
• Inspect the DC-37 connectors for bent, recessed, oxidized, or contaminated contacts.
• Check both terminal blocks for damaged insulation, loose hardware, and cracked housings.
• Verify all thermocouple, PT, and magnetic pickup wiring against the approved Mark VI drawing.
• Confirm the three PPRO/VPRO channels correspond to the correct protection channels.
• Preserve the original shield and grounding arrangements.
• Keep magnetic pickup and low-level thermocouple wiring separated from high-current switching conductors where practical.
• Verify the turbine protection circuit is fully isolated before board removal.
• Do not impose a generic 50 mm clearance around the PCB. Follow the actual Mark VI cabinet ventilation and service-access design.
• Use ESD controls throughout board handling.
• After installation, perform point-to-point wiring checks before re-energizing the protection system.
• Complete a controlled VPRO signal and trip-path functional test before returning the turbine to service.

GE Mark VI documentation shows TPRO connections for three VPRO boards, generator/bus voltage inputs, thermocouple inputs, and magnetic speed pickups, making cable identification essential during replacement. ([turn589787search21])

Buyer’s FAQ

Q1. What HS tariff code should be used for GE ?
A: Final classification depends on the importing country’s tariff schedule and the declared commercial function. As a dedicated printed-circuit termination component for electrical control equipment, HS heading 8538 may be considered, but the final country-specific code should be confirmed by the importer or customs broker.

Q2. Does Country of Origin mean the country from which the board is shipped?
A: No. COO is based on the applicable origin rules for the physical board, not its export warehouse. One current specialist record identifies the United States as the origin for this part. ([turn589787search4]) For audit purposes, retain the actual board identification and supplier/manufacturer origin evidence with the commercial invoice and Certificate of Origin when required.

Q3. How should I package and insure the ?
A: Use an ESD shielding bag, protect the DC-37 connectors and terminal blocks against impact, immobilize the board inside a rigid carton, and add moisture protection suitable for the shipping route. Current supplier data ranges from roughly 0.3 to 0.8 kg depending on the reported configuration, so actual packed weight should be measured before freight booking. ([turn589787search5] [turn589787search7]) For a turbine-protection spare, cargo insurance should cover the full declared replacement value.

Q4. Does contain the latest firmware pre-loaded?
A: No. TPRO is a termination/interface board, not a standalone processor. The protection processing is performed by the associated PPRO/VPRO architecture. Firmware and application configuration therefore need to be verified on the connected protection hardware rather than on the TPRO PCB.

A: No, not as a routine maintenance action. TPRO carries critical speed, voltage, and temperature signals for the independent turbine emergency-protection system. Follow the approved Mark VI isolation procedure, document all field and VPRO connections, verify the replacement wiring point-by-point, and complete th emergency-trip functional test before returning the turbine to operation.