GE DS200TBQAG1ABB | 45-Channel Thermocouple Terminal Board

Description

• Model & Brand: GE General Electric DS200TBQAG1ABB
• Series: GE Mark V / Speedtronic
• Part Type: TBQA RST Thermocouple Terminal Board
• Primary Function: Thermocouple signal termination and routing
• Thermocouple Capacity: Up to 45 thermocouple input channels
• Terminal Blocks: 2 × 90-position terminal blocks
• Total Terminal Positions: 180
• Board Connectors: 3 × 20-pin connectors
• Connector Designations: JAR, JAS, JAT
• Physical Dimensions: Approx. 19 × 5.5 × 3.5 in reported by an independent equipment listing; verify actual board and mounting assembly before cabinet planning.
• Estimated Shipping Weight: Approx. 5.5 lb / 2.5 kg reported by an independent listing; actual packed freight weight must be confirmed before shipment.
• Mounting: Mark V cabinet / panel-mounted PCB assembly
• Power Role: Passive signal termination/interface board; not a standalone power supply
• What’s in the Box: DS200TBQAG1ABB board and ESD protective packaging; field terminals, cables, mounting hardware, and documentation only when expressly included on the PO
• Handling Class: ESD-sensitive PCB with extensive exposed terminal and connector interfaces

GE Mark V technical references identify the DS200TBQAG1ABB as a TBQA thermocouple terminal board. The board receives up to 45 thermocouple signals and distributes them through the JAR, JAS, and JAT interfaces to the associated TCQA/TCCA control boards.

Product Introduction

Architecture Hook

Inside the GE Mark V turbine-control cabinet, DS200TBQAG1ABB functions as the RST thermocouple termination interface between field temperature sensors and the associated control electronics. The board uses two 90-position terminal blocks, providing up to 180 terminal positions, while three 20-pin interfaces route thermocouple and cold-junction signals toward the applicable TCQA/TCCA boards.

For asset control, the TBQA designation and complete DS200 number must stay together. This is not simply an analog terminal board. Its wiring arrangement is tied to thermocouple channel allocation across the Mark V R/S/T architecture. Independent technical references identify channels 1–15, 16–30, and 31–45 as separate groups routed through JAR, JAS, and JAT respectively (which makes terminal-by-terminal verification essential during replacement).

Core Technical Specifications

*Physical values are from independent equipment listings and should be verified against the actual serialized assembly before they are used for freight booking, cabinet engineering, or compliance records.

GE DS200TBQAG1ABB

🚨 Global Compliance & Industry Certifications

• CE Mark: Do not assume standalone CE approval from the DS200TBQAG1ABB part number. Any CE evidence should be tied to the complete Mark V equipment configuration or applicable GE declaration.
• UL / cUL: No standalone UL/cUL certificate for this exact PCB was verified from the technical evidence reviewed. Do not enter a UL claim in the asset register without certificate documentation.
• ATEX / IECEx: No standalone ATEX or IECEx certificate was verified for the bare board. Installation in a hazardous area requires the complete certified control-system arrangement, enclosure, wiring, and installation method.
• Marine Approvals: No board-specific DNV, ABS, or other marine certificate was verified. Vessel approval should be established from the complete installed system certification.
• Thermocouple Safety Relevance: Correct thermocouple termination directly affects turbine-temperature measurement. A wiring or cold-junction error can produce an incorrect temperature value and therefore affect protective logic or turbine operating limits.

For hazardous-location installations, certification must cover the actual installation configuration. A certification associated with a Mark V cabinet cannot automatically be transferred to an isolated replacement PCB.

Verify specific lot certifications with OEM.

🚨 Long-Term Storage & Asset Preservation Guide

Keep the in its ESD shielding bag. The two large terminal blocks and three 20-pin connectors expose many electrical contact points. Do not allow bare boards to rub against cardboard, untreated shelving, or other PCBs.

Keep humidity below 60% RH where practical. Mark V turbine cabinets can operate in demanding environments, but warehouse storage should use a controlled, low-condensation environment. Moisture and contamination at thermocouple terminals can increase contact resistance and introduce measurement errors long before corrosion becomes visually obvious.

Photograph and archive the original terminal configuration. Record TB1/TB2 wiring, connector identities, channel groups, and all label markings before the spare enters controlled stock. Thermocouple polarity and channel allocation are especially important because the board carries multiple grouped sensor circuits.

Inspect stored boards before electrical installation. Check connector pins, screw terminals, solder joints, board coating, and terminal hardware for oxidation or mechanical damage. Do not apply a generic capacitor-reforming schedule; this board’s primary preservation concern is connector, PCB, and wiring-interface condition.

Physical Installation Prerequisites

Install only in the correct GE Mark V TBQA/RST cabinet architecture. The board’s three 20-pin connectors correspond to defined thermocouple and cold-junction signal groups; they are not generic interchangeable ports.

The reported board envelope is approximately 19 × 5.5 × 3.5 inches, but cabinet drawings should use the measured dimensions of the actual hardware or the approved GE mechanical documentation.

No verified GE requirement for a universal 50 mm top-and-bottom clearance was established for this standalone board. Do not insert a generic clearance value into a turbine-control drawing. Preserve the original cabinet ventilation arrangement and provide sufficient working space for terminal access, connector engagement, wire bending, and future card removal.

Grounding must follow the complete Mark V cabinet design. Keep thermocouple wiring separated from high-energy power and switching conductors, and preserve the intended shield/reference arrangement.

Before removing the existing card, label every field conductor by terminal block and terminal number. Then document which thermocouple channels feed each JAR/JAS/JAT connector. A single channel-group mistake can result in apparently plausible but incorrect temperature values.

Buyer’s FAQ — Logistics & Compliance Focus

Q1. Which HS tariff code should be used for ?
Do not assign a definitive global HS code solely from the GE part number. The classification depends on the importing country’s tariff schedule and the customs interpretation of a dedicated turbine thermocouple termination board. Use an accurate description such as “GE Mark V thermocouple termination board, ”, then have the customs broker confirm the destination-specific HS classification.

Q2. Does the Country of Origin follow GE because the board is GE branded?
No. Brand and manufacturing origin are separate facts for customs purposes. One current supplier record reports USA origin, but that information should not be generalized to every historical unit without supporting documentation. Obtain a COO declaration tied to the actual shipment or serialized unit.

Q3. Should I insure the shipment even though this is only a terminal board?
For a legacy Mark V system, insurance is prudent. The commercial exposure can exceed the physical value of the PCB because an unavailable thermocouple termination board can delay turbine maintenance and temperature-monitoring restoration. Record serial number, condition, declared value, package dimensions, and photographs before carrier handoff.

Q4. Does a New Original include the latest firmware pre-loaded?
No firmware is normally associated with the terminal board itself. The critical configuration is physical: terminal wiring, channel grouping, connector assignment, and the installed Mark V system architecture. Independent references identify JAR, JAS, and JAT as defined thermocouple/cold-junction interfaces, so these must be matched during replacement.

Q5. What should receiving inspection record before this board enters controlled spare inventory?
Record , serial number, revision, terminal-block condition, connector condition, physical dimensions, gross and net weight, COO evidence, certification evidence where applicable, and photographs of both sides of the board. For this TBQA assembly, retain the field terminal map and JAR/JAS/JAT channel allocation with the asset record.