GE IS200TREGH1BDB | 125 VDC Mark VI Emergency Trip Board

• Model & Brand: GE IS200TREGH1BDB / General Electric
• Series: Mark VI / Mark VIe
• Part Type: TREG Turbine Emergency Trip Terminal Board
• Primary Function: Provides the positive DC supply and relay logic for up to three emergency trip solenoids
• Solenoid Configuration: 3 trip solenoids per TREG board
• Nominal Trip Voltage: 125 VDC for the H1B configuration
• Trip Current: Approximately 1 A per solenoid
• Physical Dimensions: Approx. 7.0 × 13.0 in (177.8 × 330.2 mm)
• Estimated Net Weight: Approx. 0.8 kg, supplier-reported
• Estimated Shipping Weight: Approx. 1.1–1.5 kg packed
• Terminal Blocks: 2 long terminal blocks; 24 terminals each in available hardware records
• Protection Components: MOV suppression; four large capacitors
• Relays: 12 total relay positions; 9 trip relays plus 3 economizer relays
• Connectors: JX1, JY1, JZ1 protection/control interfaces plus additional service/power connections
• What’s in the Box: IS200TREGH1BDB board, ESD protection, rigid cushioning; cables, mounting hardware, and documentation only when expressly included
• Handling: Treat as safety-related turbine protection hardware; use controlled ESD and power-isolation procedures

GE’s Mark VI documentation identifies the TREG as a turbine emergency-trip terminal board, with three trip solenoids per board, 125 VDC H1 configuration, relay diagnostics, optical trip-input isolation, and a 4 ms hardware trip-interlock filter.

Product Introduction

The physical TREG board is part of the final emergency-trip path, where a board-level fault can prevent a valid turbine shutdown command from reaching the trip solenoids. IS200TREGH1BDB is the H1B 125 VDC TREG configuration, supplying the positive DC side of as many as three emergency-trip solenoids while the associated TRPG board provides the negative side. Nine emergency-trip relays are arranged in three relay groups, with each group controlling one solenoid.

The board also carries three economizer relays, relay-contact feedback, solenoid-voltage monitoring, and multiple protected trip-interlock inputs. GE’s documentation specifies 125 VDC nominal trip-interlock excitation, an operating range of 100–145 VDC, optical isolation to 1500 V, and a 4 ms hardware filter. The complete H1B identity is therefore essential; do not substitute an H2B 24 VDC board or a special redundant TREG variant solely because the PCB outline appears similar.

Core Technical Specifications

GE documentation states that the three JX1/JY1/JZ1 interface connectors carry control power and status feedback, while the I/O controller monitors relay drivers, contact feedback, solenoid voltage, and related protection circuits.

GE IS200TREGH1BDB

🚨 Global Compliance & Industry Certifications

Certification must be established for the exact Mark VI/Mark VIe system configuration, not inferred from the TREG part number.

• CE Mark: May apply to the complete GE turbine-control assembly. Do not claim independent CE conformity for the bare IS200TREGH1BDB without GE documentation.
• UL/cUL: No reliable evidence was established for an independent UL/cUL listing of this specific board.
• ATEX / IECEx: Do not assign ATEX or IECEx approval to the PCB without exact equipment certification. Hazardous-area suitability depends on the complete turbine-control installation.
• Class I, Division 2 / Zone 2: Applicability depends on the approved Mark VI/Mark VIe cabinet, wiring, I/O architecture, enclosure, and installation conditions.
• Marine Approvals: No independent DNV, ABS, or Lloyd’s Register approval was established for this specific board from the reviewed records.
• Safety Function: The board is directly associated with turbine emergency-trip functions, so configuration and traceability should be maintained as safety-related asset documentation.

Why this matters: The TREG can energize or remove power from emergency-trip solenoids. A voltage-variant error or incorrect relay arrangement can directly affect the turbine’s emergency shutdown path.

Verify specific lot certifications with OEM.

🚨 Long-Term Storage & Asset Preservation Guide

Keep the TREG sealed in ESD shielding. The board has exposed relay assemblies, terminal connections, connectors, MOVs, capacitors, and jumper hardware. Protect the terminal blocks and connector pins from impact; a bent contact can create a false trip-system fault after installation.

Keep storage dry and stable. A practical warehouse target below 60% RH, with no condensation, is preferable for multi-year electronic-spare storage. Do not leave the board in an unsealed carton where warehouse dust can settle on the relay contacts and terminal insulation.

Preserve the jumper and voltage configuration. The H1B version is specifically associated with 125 VDC trip-service architecture. Keep a photograph of the board and all installed jumper positions with the asset record. Do not move a jumper during routine inspection simply to confirm that it is physically present.

Before installation after extended storage, allow the sealed package to reach room temperature. Inspect relay bodies, MOVs, electrolytic capacitors, connector contacts, terminal screws, solder joints, and any signs of moisture or overheating.

Physical Installation Prerequisites

• System Compatibility: Confirm Mark VI or Mark VIe architecture before installation.
• Voltage Variant: Verify H1B / 125 VDC against the cabinet design. H2B is the 24 VDC variant and is not an automatic substitute.
• Protection Module: In Mark VI systems, verify the VPRO interface; in Mark VIe, verify the PPRO/SPRO arrangement.
• Power Isolation: Use the approved turbine shutdown, electrical isolation, and lockout/tagout procedure before disturbing the board.
• Trip Solenoids: Confirm the three connected trip-solenoid circuits, polarity, voltage, fuse protection, and wiring against the approved drawing.
• Terminal Blocks: Label every field conductor before removal.
• Connector Inspection: Check JX1, JY1, JZ1 and other mating connectors for bent pins, contamination, or incomplete seating.
• Redundancy: If the site uses redundant TREG boards, verify whether the board is an H3B/H4B architecture rather than assuming H1B is interchangeable.
• Grounding: Preserve the Mark VI cabinet protective-earth and signal-reference configuration.
• Clearance: Provide enough space for the 13-inch board, terminal wiring, connector access, and safe servicing.
• Cooling: Keep the cabinet airflow path clear; do not pack cable bundles over the relay and capacitor area.
• ESD: Use a grounded wrist strap and ESD-safe work surface.
• Final Trip Test: Complete the required emergency-trip and interlock proof testing before returning the turbine to operational service.

Buyer’s FAQ

Q1. What HS Tariff Code should be used for IS200TREGH1BDB?
Do not assign a final HS classification from “terminal board” alone. This is a dedicated turbine emergency-trip control assembly, and classification can vary by importing jurisdiction. Have the customs broker review its electrical function, industrial application, invoice wording, and destination tariff schedule.

Q2. What Country of Origin documentation should accompany the shipment?
Use the actual manufacturing origin supported by supplier or manufacturer records. Do not infer COO from the dispatch warehouse. The trade file should retain the commercial invoice, packing list, COO statement or certificate where applicable, exact part-number photograph, revision information, and serial/lot traceability.

Treat it as a power-off safety-system replacement unless the exact GE installation procedure expressly permits otherwise. The board is connected to 125 VDC trip circuits, external interlocks, emergency-stop wiring, and turbine protection interfaces. Live handling can create both personnel and turbine-protection hazards.

Q4. Does a New Original contain the latest firmware?
No standalone firmware should be expected on the TREG terminal board. The board is primarily a trip-power, relay, interlock, and feedback interface; system-level configuration is handled through the associated protection/control architecture. GE documents the distinction between Mark VI/VPRO and Mark VIe/PPRO control arrangements.

Q5. What warranty and shipping protection should be required?
The quotation should identify , the H1B voltage configuration, physical condition, revision, serial/lot data where available, warranty period, return process, and pre-shipment test scope. Because this is safety-related turbine hardware, shipment should use ESD shielding, rigid terminal protection, moisture control, and insurance based on the documented replacement value.