Product Core Brief
- Model: IS220PTCCH1A
- Brand: GE (GE Vernova)
- Series: GE Speedtronic Mark VI / Mark VIe — PTCI Thermocouple Input Pack
- Core Function: Thermocouple input pack for Mark VI/Mark VIe systems, acquiring turbine temperature signals and converting them for controller processing; supports Simplex, Duplex, and TMR configurations.
- Product Type: Thermocouple Input I/O Pack
- Key Specs: Thermocouple input | Simplex/Duplex/TMR compatible | Mark VIe I/O pack architecture
- Condition: New Original (New Surplus) / Factory Sealed
Product Introduction
The is a PTCI-series thermocouple input pack used in GE Speedtronic Mark VI and Mark VIe turbine control systems. It handles thermocouple signal acquisition for gas, steam, and hydro turbine applications, feeding temperature data into the Mark VI/VIe controller for exhaust temperature monitoring, temperature-based protection, and combustion control.
Why this matters: when a PTCI pack fails, the controller can lose critical temperature channels. In a TMR configuration, losing one channel may be tolerated, but multiple failures can trigger false trips or disable temperature-based protection. For plants still running legacy Mark VI/VIe systems with this pack installed, a verified spare on the shelf means you can restore the input path during a planned window instead of responding to an alarm with no clean replacement available. These are discontinued GE I/O packs and increasingly hard to source in unused condition.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model | |
| Functional Abbreviation | PTCI |
| Product Type | Thermocouple Input I/O Pack |
| Compatible Platform | GE Speedtronic Mark VI / Mark VIe |
| Signal Type | Thermocouple input |
| Redundancy Support | Simplex, Duplex, and TMR |
| Typical Application | Turbine exhaust temperature, combustion temperature monitoring |
| Mounting | Mark VIe I/O pack slot |
Note: Exact channel count, thermocouple type, accuracy, and companion terminal board are not fully documented in open sources. Confirm against your existing pack label and the GE Mark VI/VIe hardware manual before ordering.
Key Selling Points & Differentiators
- Correct PTCI thermocouple pack for Mark VI/VIe. Designed for GE Speedtronic turbine temperature measurement — not a generic analog input module.
- TMR-ready. Supports Simplex, Duplex, and Triple Modular Redundant configurations, matching the cabinet’s redundancy architecture.
- Direct like-for-like replacement. Matches the IS220PTCCI/PTCI family used in legacy Mark VI/VIe I/O racks.
- New surplus availability. Discontinued GE I/O pack. We stock verified, unused units — not pulled packs with unknown thermal cycling history.
- Not recommended for Mark V DS200-series cabinets, non-GE turbine controls, or unrelated analog I/O applications.
- 12-month warranty with pre-shipment visual inspection and connector verification.
Quality Transparency SOP
- Label & revision audit. Verify “IS220PTCCH1A” and “PTCI” on the pack label. Confirm the “H1A” suffix matches the existing pack.
- Visual PCB inspection. Check for burnt components, cracked solder joints, swollen capacitors, or corrosion around connectors and terminal areas.
- Connector pin check. Verify all backplane and ribbon-cable connectors are straight, clean, and undamaged. Bent pins cause intermittent channel loss.
- Continuity & insulation check. Test connector continuity and verify no shorted or open input channels with a multimeter.
- ESD packaging. Sealed in anti-static bag, foam-padded box, shipped with a signed inspection report.
Technical Risk Avoidance
- ❗ Confirm the full part number before ordering. IS220PTCCH1A, IS200PTCI, and other PTCI variants may differ in revision, channel count, or companion terminal board. Replace like-for-like unless engineering approves otherwise.
- ❗ Verify TMR vs Simplex configuration. Installing the pack into the wrong redundancy slot or mismatching it with the cabinet’s TMR group can cause voting errors or false trips.
- ❗ Check the companion terminal board. PTCI packs typically mate with a specific thermocouple terminal board. A failed terminal board can mimic a pack failure.
- ❗ Document channel wiring before removal. Thermocouple polarity matters. Reversing leads during replacement can produce incorrect temperature readings.
- ❗ Do not substitute with generic analog input packs. PTCI packs are configured for thermocouple signal conditioning. Using a voltage/current analog pack in its place will not produce valid temperature readings.
Buyer’s FAQ
Q: What system is IS220PTCCH1A used in? A: It is used in GE Speedtronic Mark VI and Mark VIe turbine control systems as a thermocouple input pack for turbine temperature measurement.
Q: Can it be used in TMR configurations? A: Yes. The PTCI pack supports Simplex, Duplex, and TMR applications in Mark VI/VIe systems.
Q: Is this the same as IS200PTCI? A: They belong to the same PTCI thermocouple input family, but IS220 and IS200 prefixes may indicate different revisions or packaging. Always match the full part number on your existing pack.
Q: Is this new or refurbished? A: New original surplus — factory sealed, never installed. We do not sell pulled or refurbished packs as “new.”
Q: What’s the lead time and warranty? A: In-stock units ship within 1–2 business days. 12-month warranty from ship date, covering manufacturing defects and DOA failures.
