Products Description
ALSTOM IR139-1 Overspeed Protection Relay Module in stock
ALSTOM IR139-1 is a dual-channel overspeed protection relay module developed for turbine safety protection systems. It receives pulse signals from magnetic speed pickups, monitors real-time rotational speed of rotating machinery and triggers trip output when overspeed threshold is exceeded.
This module adopts dual redundant measurement channels and force-guided safety relay contacts, complying with API 670 and SIL2 safety requirements. It is a discontinued legacy spare part, widely used for maintenance replacement of old thermal power turbine protection systems.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | ALSTOM |
| 2 | Model | IR139-1 |
| 3 | Module Type | Overspeed Protection Relay Module |
| 4 | Input Signal | Magnetic pickup pulse signal, dual channel |
| 5 | Speed Range | 0 ~ 10000 RPM configurable |
| 6 | Relay Output | 4 SPDT relays, 2 for safety trip |
| 7 | Power Supply | 24VDC ±10% |
| 8 | Operating Temperature | 0 ~ +60°C |
| 9 | Status | Discontinued legacy spare part |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Dual-channel acquisition of pulse speed signals from magnetic pickup probes |
| 2 | Real-time calculation and monitoring of rotating machinery speed value |
| 3 | Overspeed judgment and safety trip relay output when exceeding preset threshold |
| 4 | Built-in channel self-diagnosis and fault alarm function with LED indicators |
| 5 | Force-guided relay contacts to ensure safety reliability for turbine protection |
Application Scenarios
| No. | Application |
|---|---|
| 1 | Thermal power plant steam turbine overspeed protection safety system |
| 2 | Rotating machinery safety protection and speed monitoring rack system |
| 3 | Power generation safety instrumented system complying with API670 standard |
| 4 | Legacy turbine protection system spare replacement and retrofit |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q: What is ALSTOM IR139-1? A: ALSTOM IR139-1 is dual-channel overspeed protection relay module, used for turbine speed monitoring and overspeed trip protection. |
| 2 | Q: What safety level does IR139-1 meet? A: It meets SIL2 safety requirement and complies with API 670 rotating machinery protection standard. |
| 3 | Q: What is the main application of this module? A: It is mainly applied to steam turbine overspeed safety protection in thermal power plants. |
