Description
Woodward 8237-1369
Technical Specifications:
- Brand: Woodward
- Model: 8237-1369
- Product Type: Overspeed Protection Device
- Relay Output: Dual redundant trip relay (2-out-of-3 voting) or three independent non-voting relays
Functional Features:
- High Sensitivity & Fast Response: Detects dangerous speed deviations and issues trip commands within milliseconds.
- Host Detection Logic: Verifies MPU functionality during turbine operation using special speed-loss detection logic.
- Online Maintenance: Triple modular design allows users to safely replace a single module while the turbine is online and operating normally.
Application Scenarios:
Applied across all sizes of steam, gas, and water turbines, as well as reciprocating engines and factory processing equipment requiring SIL-rated safety protection.
Performance Parameters:
- Speed Signal Input: 3 magnetic electric sensors (MPU), active or passive
- Power Supply: High voltage (88-264 Vac) or low voltage (90-150 Vdc)
- Alarm Relays: 1 alarm relay per module (3 total)
Material Composition:
Features a specialized conformal coating resistant to sulfide pollution (H2S, SO2), ensuring long-term stability in harsh petrochemical and marine environments.
Structural Characteristics:
Panel-mounted configuration with a backplane structure for easy maintenance. Includes a 4.2-inch display and 15-button keypad per module for local interaction.
Working Principle:
Continuously evaluates three independent speed inputs. If the voting logic confirms an overspeed condition, it energizes the trip relays to cut off fuel or steam, bringing the machine to a safe stop.
Installation Requirements:
Install in a panel with an IP56 protection level (when correctly installed). Ensure the working temperature remains within -20°C to +60°C.
Usage Precautions:
Always wear appropriate Personal Protective Equipment (PPE) when working near rotating machinery. Prepare for emergency shutdown during any startup or testing procedures.
