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Woodward 8237-1246 ProTech-GII Overspeed Protection System
Woodward 8237-1246 ProTech-GII Overspeed Protection System
Manufacturer: WOODWARD
Product No.: 8237-1246
Product Type: ProTech-GII Overspeed Protection System
Product Origin: USA
Payment: T/T
Weight: 12200g
Shipping port: Xiamen
Warranty: 12 months
Product Description
The Woodward 8237-1246 is a ProTech-GII overspeed protection system designed for steam, gas, and hydro turbines. It uses triple-modular-redundant (TMR) architecture with 2-out-of-3 voted relay logic to provide high-integrity overspeed and over-acceleration protection. The unit supports both high-voltage and low-voltage power ranges, offers fast trip response, and includes independent modules that can be replaced online without shutting down the turbine. The bulkhead-mount design and IP56 enclosure make it suitable for harsh industrial environments, including areas with corrosive gases.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model / Series | 8237-1246, ProTech-GII |
| Mounting Type | Bulkhead mount |
| System Architecture | Triple-Modular Redundant (TMR), 2-out-of-3 voted logic |
| Power Input (HV/LV) | 90–264 Vac (47–63 Hz) or 100–150 Vdc, approx. 30 W per module |
| Trip Relay Outputs | Dual redundant voted trip relays; optional three independent non-voted relays |
| Alarm Outputs | One alarm relay per module (three total) |
| Speed Input Type | MPU or Proximity sensor (one per module, three total) |
| Speed Range | Approx. 0.5 to 32,000 RPM |
| Response Time | ~12 ms from overspeed detection to relay action |
| Analog Output | 4–20 mA speed output per module |
| Communication Interface | Modbus (for monitoring and diagnostics) |
| Enclosure Protection | IP56 |
| Vibration Resistance | 0.04 G²/Hz, 1.04 Grms, 10–500 Hz |
| Operating Temperature | –20 °C to +60 °C |
| Storage Temperature | –20 °C to +65 °C |
| Dimensions (W × H × D) | Approx. 330 × 486 × 153 mm |
| Weight | 12.2 kg (under 27 lb) |
| Safety Certification | SIL-3 (IEC 61508) |
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