Woodward 8273‑128 Industrial Overspeed & Load Sharing Unit
Manufacturer: Woodward
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Part Number: 8273-128
Condition：New with Original Package
Product Type: Industrial Overspeed & Load Sharing Unit
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Country of Origin: GERMANY
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description
The Woodward 8273‑128 is a ProTech‑GII overspeed protection and digital load sharing module, designed for steam turbines, gas turbines, hydro turbines, and large reciprocating engines. It continuously monitors turbine or engine shaft speed via magnetic pickup (MPU) sensors and provides fast, independent trip signals to turbine trip valves or breaker systems when overspeed conditions occur.
This module is engineered for mission-critical industrial safety applications, offering Triple Modular Redundancy (TMR) with three independent internal modules that vote to ensure reliable trip action. Therefore, the system maintains protection even if one module fails.
Housed in a rugged IP56-rated enclosure, the 8273‑128 operates reliably in dusty, wet, and vibration-prone environments. Moreover, it integrates built-in diagnostics, LED indicators, and watchdog timers, allowing operators to monitor system health efficiently. This module also features 24 VDC input and is part of Woodward’s 2301D-ST subseries, optimized for steam process applications.
Technical Specifications
| Feature | Specification |
|---|---|
| Product type | ProTech‑GII overspeed protection & load sharing module |
| Manufacturer | Woodward |
| Model number | 8273‑128 |
| Functional Part Number | 8273‑128 |
| Subseries | 2301D-ST |
| Function | Monitors turbine/engine speed and issues trip signal on overspeed |
| Architecture | Triple Modular Redundancy (TMR) – three independent modules with voting logic |
| Sensor inputs | Active or passive magnetic pickup (MPU) sensors |
| Trip outputs | High-speed relay outputs for turbine trip valve or breaker |
| Enclosure rating | IP56 dust and water resistant |
| Mounting | Bulkhead mount |
| Dimensions | 330 mm × 486 mm × 153 mm |
| Operating temperature | −40 °C to +85 °C |
| Humidity tolerance | 5–95% non-condensing |
| Power supply | 24 VDC nominal |
| Diagnostics | Built-in self-test, watchdog timers, LED indicators, fault logging |
| Certifications | CE, UL, IEC 60529 |
| Applications | Steam turbines, gas turbines, hydro turbines, reciprocating engines, generator sets |
FAQ
Q1: What is the main function of the 8273‑128 module?
A1: It independently monitors turbine or engine speed and issues fast trip signals during overspeed.
Q2: What does Triple Modular Redundancy (TMR) mean?
A2: TMR employs three internal modules that vote to ensure fault-tolerant overspeed protection.
Q3: Can this module operate in harsh environments?
A3: Yes, the IP56-rated enclosure ensures dust, water, and vibration resistance.
Q4: What is the input voltage for this module?
A4: The module operates on a 24 VDC nominal input.
Q5: Which series does this module belong to?
A5: It is part of Woodward’s 2301D-ST subseries, optimized for steam process applications.