GE IS200WREAH1A Aero Trip Terminal Board

Description

3. Key Technical Specifications

• Manufacturer: General Electric (GE)
• Part Number: IS200WREAH1A
• Series: Mark VIe Speedtronic
• Board Type: Aero Trip Terminal Board / Daughter Board
• Application: Gas turbine and steam turbine protection systems
• Input Type: Dry contact / volt-free contact inputs
• Voting Logic Support: 2-out-of-3 (2oo3) turbine trip voting
• Power Supply Reference: 28 V DC input system interface
• Maximum Contact Voltage: 120/240 V AC or 24/125 V DC (application dependent)
• Output Circuits: 6 fused, 1 unfused
• Fuse Rating: 3.15 A, 500 V AC / 400 V DC
• Dimensions: Approx. 19.8 × 10 × 4.5 cm
• Weight: Approx. 0.2 kg

The GE IS200WREAH1A is identified as an Aero Trip Terminal Board used with GE Mark VIe turbine control systems. It functions as an accessory daughter board associated with emergency turbine protection I/O assemblies such as the IS220PPRAH1A and terminal board combinations including IS200TREAH1A.

IS200WREAH1A

4. Product Introduction

The GE IS200WREAH1A is an Aero Trip Terminal Board designed for GE Mark VIe Speedtronic turbine control systems. It handles emergency trip-related dry contact inputs and interfaces with turbine protection circuits requiring reliable discrete signal processing.

This board is mainly used for maintaining existing turbine control installations. Before replacement, verify the complete part number, Mark VIe configuration, terminal board combination, and installed protection logic. GE documentation identifies IS200WREAH1A as an accessory used with Mark VIe protection assemblies.

5. Installation & Configuration Guide

Stage 1: Pre-Installation Preparation (Approx. 15 minutes)

⚠️ Safety First

1. Notify turbine operations before maintenance.
2. Confirm the turbine is in a safe shutdown state.
3. Apply lockout/tagout procedures.
4. Isolate control power sources.
5. Wait for stored energy discharge before handling the board.

⚠️ This board is part of a turbine protection circuit. Do not remove or install it while the protection system is active.

Tools Required

• ESD wrist strap
• PH1 screwdriver
• Digital multimeter
• Wire labels
• Smartphone/camera

Data Backup

1. Record the existing board label information.
2. Photograph terminal wiring.
3. Document the daughter board mounting position.
4. Record current protection system alarms.

Stage 2: Removing the Old Module (Approx. 10 minutes)

1. Open the Mark VIe control cabinet.
2. Confirm all power sources are isolated.
3. Label all connected wiring.
4. Disconnect field terminals carefully.
5. Release board mounting hardware.
6. Remove the IS200WREAH1A straight from the mating connection.

⚠️ Inspect:

• Board connector pins
• Terminal contacts
• Moisture contamination
• Heat damage
• Mechanical damage

Keep the original board until the replacement passes testing.

Stage 3: Installing the New Module (Approx. 15 minutes)

1. Wear ESD protection.
2. Verify:

• GE marking
• IS200WREAH1A part number
• Correct revision

Configuration Clone (Critical)

1. Compare the replacement board with the removed unit.
2. Verify terminal assignment.
3. Confirm correct mating board combination.
4. Check all trip input wiring.
5. Install the daughter board.
6. Confirm proper seating.
7. Secure all mounting hardware.
8. Reconnect field wiring.

Self-Checklist

[ ] Correct GE part number verified
[ ] Board revision confirmed
[ ] Trip wiring checked
[ ] Mounting secured

Stage 4: Power-On & Testing (Approx. 15 minutes)

Pre-Power Check

1. Verify 28 V DC control supply.
2. Check for wiring shorts.
3. Confirm board seating.

Power-On Steps

1. Restore control power.
2. Check Mark VIe diagnostics.
3. Verify protection I/O communication.
4. Test dry contact inputs.
5. Confirm trip circuit status.

⚠️ Troubleshooting Note

• No input status: inspect dry contact wiring and terminal connections.
• Protection alarm: verify board pairing and configuration.
• Communication issue: check installed I/O pack and terminal board compatibility.

6. Frequently Asked Questions (FAQ)

Q1: What is the GE IS200WREAH1A used for?

The IS200WREAH1A is an Aero Trip Terminal Board used in GE Mark VIe turbine control systems. It provides an interface for emergency trip-related discrete signals.

Q2: Is the IS200WREAH1A part of the Mark VIe turbine protection system?

Yes. It is used as an accessory board with GE turbine protection assemblies, including combinations involving the IS220PPRAH1A I/O pack and IS200TREAH1A terminal board.

Q3: Can I hot-swap the IS200WREAH1A?

No. This board is associated with turbine protection circuits. Remove power and follow GE maintenance procedures before replacement.

Q4: Is this a new original or refurbished board?

Confirm the actual inventory condition before purchase. Industrial suppliers may offer new surplus, tested used, or repaired units. Request inspection records and photos.

Q5: Will replacing this board change turbine trip logic?

The board itself is a hardware interface component, but trip behavior depends on the complete Mark VIe configuration. Verify wiring, I/O mapping, and protection settings before returning the system to service.

Q6: What should I verify before ordering?

Check:

• Full part number: IS200WREAH1A
• Revision level
• Compatible I/O pack
• Terminal board combination
• Existing wiring configuration

Q7: Why is surplus pricing different from OEM pricing?

Legacy turbine control hardware is usually sourced through specialized industrial spare channels. Price depends on condition, testing method, warranty, and available inventory.