GE IS200ECTBG1A – Exciter Contact Terminal Board | Mark VI Turbine Control Platform
Engineering Background: The IS200ECTBG1A is a purpose-built exciter contact terminal board developed by GE as part of the Mark VI turbine control ecosystem. It serves as the critical interface layer between the excitation system and the broader turbine control architecture, managing discrete contact I/O signals that govern generator excitation sequencing, protection interlocks, and field flashing operations.
Product Positioning: Designed for power generation OEMs, EPC contractors, and plant maintenance teams operating GE Frame 3–9 gas turbines and steam turbines equipped with the Mark VI or Mark VIe control platform. The IS200ECTBG1A is a direct factory-replacement board that restores full excitation contact functionality without requiring system reconfiguration or firmware changes.
Complete Technical Specifications
- Part Number: IS200ECTBG1A
- Series: IS200 / Mark VI Exciter I/O
- Manufacturer: GE (General Electric) – Power Controls Division
- Board Type: Exciter Contact Terminal Board
- Form Factor: PCB module, rack-mountable
- Weight: 860 g (approx.)
- Country of Origin: United States
- Compatible Platform: GE Mark VI / Mark VIe Turbine Control System
- Signal Type: Discrete contact I/O (dry contact relay interface)
- Application: Generator excitation control, field flashing, protection interlocks
- Connector Interface: Standard IS200-series backplane and terminal block connectors
- Operating Temperature: 0°C to +60°C (typical industrial control panel range)
- Compliance: Designed to GE Mark VI system standards
Proven Application Environments
- Combined-cycle and simple-cycle gas turbine power plants (GE Frame 3, 5, 6, 7, 9 series)
- Steam turbine generator sets with Mark VI excitation control
- Hydroelectric generator excitation systems integrated with Mark VI
- Industrial co-generation facilities requiring reliable excitation I/O
- Retrofit and upgrade projects migrating from Mark V to Mark VI platforms
- Emergency spare parts programs for critical power generation assets
Engineering Advantages
- Drop-in Replacement: Maintains full backward compatibility with existing Mark VI backplane wiring and I/O mapping — no re-engineering required.
- Contact Isolation: Provides galvanic isolation between excitation field circuits and control logic, protecting sensitive Mark VI processors from transient voltage events.
- High Signal Integrity: Precision terminal layout minimizes cross-talk and ensures reliable discrete signal transmission in high-EMI turbine hall environments.
- Reduced Downtime: Plug-and-play board swap capability enables rapid restoration of excitation control without extended outage windows.
- OEM-Grade Quality: Manufactured to GE’s original design specifications, ensuring full compatibility with Mark VI diagnostic and configuration tools (Toolbox).
System Architecture & Signal Flow
Within the Mark VI architecture, the IS200ECTBG1A interfaces with the VCMI (VME Communication Module Interface) or equivalent exciter controller card via the IS200-series backplane. Contact inputs from field devices (breaker auxiliary contacts, protection relay outputs, manual field switches) are conditioned and routed through the terminal board to the Mark VI I/O processor. Contact outputs drive field flashing contactors, excitation enable relays, and AVR (Automatic Voltage Regulator) permissive circuits. The board’s terminal block layout follows GE’s standard IS200 wiring convention, allowing direct substitution using existing plant wiring documentation.
Sourcing & Quality Verification
- Source: Procured from authorized GE channel partners and verified surplus from decommissioned OEM installations.
- Inspection: Each unit undergoes visual inspection, component-level verification, and functional bench testing prior to shipment.
- Traceability: Board revision and date codes are documented and available upon request for maintenance records.
- Packaging: Anti-static ESD packaging with foam cushioning; suitable for international air freight.
- Warranty: 12-month operational warranty against manufacturing defects.
Procurement Process
- Confirm Compatibility: Verify your Mark VI system revision and existing board part number against IS200ECTBG1A. Contact our engineering team if cross-referencing is required.
- Request Quote: Submit your RFQ via support@konmask.com with quantity, required delivery date, and destination port.
- Order Confirmation: Purchase order accepted via email; proforma invoice issued within 24 hours.
- Shipping: DHL / FedEx express international shipping available; EXW Xiamen or CIF terms negotiable for bulk orders.
- Documentation: Commercial invoice, packing list, and test report provided with every shipment.
Technical FAQ
Q: Is IS200ECTBG1A compatible with Mark VIe as well as Mark VI?
A: The IS200ECTBG1A was designed for the Mark VI platform. Compatibility with Mark VIe depends on the specific I/O module configuration. Please consult your GE Toolbox configuration file or contact us for verification.
Q: Can this board be used as a direct replacement without recalibration?
A: Yes. As a contact terminal board, IS200ECTBG1A does not require calibration. Board swap is a direct mechanical and electrical replacement; no software changes are needed in the Mark VI Toolbox.
Q: What is the lead time for this part?
A: In-stock units ship within 3–5 business days. For out-of-stock situations, typical lead time is 2–4 weeks depending on sourcing. Contact us for real-time availability.
Q: Do you provide a test report with the shipment?
A: Yes. A functional test report is included with every unit shipped from Konmask.com.
Q: Can you supply multiple units for a spare parts program?
A: Yes. We support bulk procurement for plant spare parts programs. Volume pricing is available — please submit your RFQ to support@konmask.com.
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