GE IS200WETAH1AEC – Excitation Terminal Board for EX2100/Mark VIe Generator Control Feedback

The GE IS200WETAH1AEC is a WETA-series terminal board used in GE EX2100 (and in many cases Mark VI/Mark VIe-based excitation cabinets) to bring CT/VT feedback and key field signals into the regulator. From my experience, this board typically sits in the exciter control cubicle and handles the heavy-lifting of field wiring—scaling, burdening, and clean routing—so the controller receives stable, correctly conditioned signals. One thing I appreciate is how it simplifies service work: clear terminal points, predictable jumpers, and proven GE isolation practices.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than 1 month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• Dedicated CT/VT Inputs – Accepts multiple current and voltage transformer feedback channels used by the exciter for regulation and protection.
• Signal Conditioning & Burden Networks – On-board scaling, burden resistors, and filtering provide stable, low-noise analog signals to the controller.
• High-Voltage Isolation Practices – GE’s creepage/clearance layout helps maintain measurement integrity in generator applications.
• Service-Friendly Terminals – Screw or pluggable terminals (depending on sub-revision) make field wiring and maintenance straightforward.
• Jumper/Link Options – Typically provides jumper-selectable input ranges or polarity to match plant CT/VT ratios and wiring conventions.
• EX2100/Mark VIe Cabinet Integration – Designed to mount and interface neatly within GE excitation racks via board connectors and harnesses.
• H1AEC Revision Lineage – The H1AEC revision indicates compatibility with specific EX2100 builds; it seems to be favored in retrofit spares due to stable performance.

Technical Specifications

Application Fields

This board is typically used in:

• Generator excitation systems (EX2100) on gas, steam, and hydro units
• Plant retrofits integrating Mark VI/Mark VIe turbine controls with updated excitation cabinets
• Medium to large rotating machines requiring precise voltage regulation and robust protection feedback

A maintenance lead at a 250 MW combined-cycle plant mentioned that swapping a degraded WETA board immediately stabilized VAR control after sporadic CT noise—pretty consistent with what we see when burden components drift over time.

Advantages & Value

• Reliability in Harsh Electrical Environments – Designed for generator halls where electromagnetic interference is non-trivial.
• Direct Compatibility – Matches EX2100/Mark VIe cabinet wiring conventions, reducing commissioning time.
• Lifecycle Support – The H1AEC revision is common in installed bases, making it easier to keep a consistent spares strategy.
• Cost Control – A targeted replacement avoids unnecessary controller swaps; in many cases a WETA refresh restores feedback quality.
• Technical Backing – We can help identify jumper/link settings to suit your CT/VT ratios and plant grounding rules.

Installation & Maintenance

• Cabinet Requirements – Install in the designated EX2100/Mark VIe slot with adequate ventilation; avoid conductive dust and moisture.
• Wiring & Safety – Always short CTs before disconnection; verify VT secondary fusing; follow site LOTO and ESD procedures.
• Grounding – Maintain clean chassis ground; check shield terminations to prevent ground loops on analog paths.
• Jumper Configuration – Confirm scaling/polarity jumpers to match plant CT/VT ratios and wiring diagrams before energizing.
• Routine Checks – Inspect terminals for torque and discoloration; re-seat ribbon/connectors; clean with dry air; document any calibration links.
• Spares Strategy – Keep at least one tested spare per exciter to minimize outage time; from my experience, pre-configuring jumpers reduces start-up delays.

Quality & Certifications

• Manufacturing Quality: Produced within GE’s industrial control quality framework (ISO 9001 environments)
• Compliance: Typically used within CE and UL assessed EX2100/Mark VIe systems
• Materials: Leaded or RoHS status depends on revision and production lot; many legacy excitation boards are leaded
• Warranty: 365 days standard