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Overview
The 8237-1245 ProTech-GII unit from Woodward is a dedicated turbine overspeed and overacceleration protection system engineered for critical rotating machinery. Designed as a bulkhead-mounted assembly, this device provides autonomous trip protection independent of the primary control system, ensuring rapid and reliable shutdown during abnormal speed events.
The 8237-1245 integrates real-time speed monitoring, configurable trip logic, and event recording within a rugged industrial enclosure, making it suitable for harsh plant environments and safety-critical applications.
Key Functional Capabilities
The 8237-1245 overspeed protection system continuously evaluates turbine speed signals and executes immediate shutdown commands when preset thresholds are exceeded. In addition to overspeed protection, the unit supports overacceleration detection, alarm handling, and detailed trip diagnostics with time-stamped logs.
Local configuration and status review are performed through an integrated keypad and display, while communication interfaces allow seamless integration with plant supervisory or DCS systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Turbine Overspeed Protection System |
| Series | ProTech-GII |
| Manufacturer | Woodward |
| Model / Part Number | 8237-1245 |
| Mounting Method | Bulkhead Mount |
| Enclosure Rating | IP56, dust-tight and protected against high-pressure water jets |
| Input Voltage (High Range) | 115 VAC, 240 VAC, or 125 VDC |
| Input Voltage (Low Range) | 24 VDC |
| Overvoltage Category | IEC 60664-1 Category II |
| Inputs | Speed, frequency, analog process signals, digital status inputs |
| Display Interface | Integrated display with 15-key keypad per module |
| Event Logging | Trip and alarm history with time stamps |
| Communication | Modbus and Ethernet (configuration-dependent) |
| Operating Temperature | –20 °C to +60 °C |
| Storage Temperature | –20 °C to +65 °C |
| Dimensions | 13 × 19 × 6 inches |
| Weight | 26 lb |
System Design and Reliability
The ProTech-GII architecture is designed to operate independently from turbine governors and plant control systems. This separation ensures that protective functions remain active even during controller faults or communication failures. The IP56 enclosure and wide operating temperature range allow reliable performance in power generation, oil and gas, and heavy industrial environments.
Typical Applications
Steam and gas turbines
Compressor and pump trains
Power generation and cogeneration systems
Petrochemical and refinery rotating equipment
Critical machinery requiring standalone overspeed protection
FAQ
Q: Is the 8237-1245 suitable as a standalone protection device?
A: Yes. The 8237-1245 is designed to function independently from control or governor systems, providing dedicated safety protection.
Q: Can this unit interface with a DCS or SCADA system?
A: Yes. Communication options such as Modbus and Ethernet are available depending on configuration, enabling status monitoring and diagnostics.
Q: Does the device store historical trip data?
A: Yes. The system records trip and alarm events with timestamps for post-event analysis and maintenance diagnostics.
