Woodward 8237-1601 GII Over-Speed Protection System

ProTech GII Over-Speed Protection System – Model 8237-1601
Description
The ProTech GII Over-Speed Protection System, model 8237-1601, is designed to provide reliable over-
speed protection for steam, gas, and hydro turbines. It ensures safe shutdown in the event of an over-speed
condition, protecting equipment and personnel. The system features a 2-out-of-3 voting architecture with
three independent channels for enhanced reliabilty.

Features
●Voting Architecture: 2-out-of-3 voted design for high reliability.
Triple Redundancy: Three independent channels for critical protection.
●High and Low Voltage Inputs: Supports 115 Vac, 240 Vac, 125 Vdc, and 24 Vdc inputs.
Modbus Communication: Enables remote monitoring and data exchange.
● Speed Readouts: Provides 4-20 mA output for speed monitoring.
●Routine Speed Tests: Configurable for regular turbine speed testing.
Environmental Resistance: Rated for Class 3C2 environments, resistant to sulfur, H2S, and SO2 gases
due to conformal coating.
Modular Design: Easy module replacement during operation.
Module Learning: Supports module-to-module learning functions.
●Installation: Fits into a 24-inch standard cabinet.
●Protection Rating: IP56 ingress protection.
Weight: Approximately 26 Ib.
Dimensions: 13x 19 x 6 inches.
●Operating Temperature: -20 to +60 °C.
●Storage Temperature: -20 to +65 °C.
●Overvoltage Category: II (per IEC 60664-1). .
Keypad/Display: 15 keys per module for configuration and monitoring.
Mounting: Bulkhead mount, HV/HV, Ind relay.
●Acceleration and MPU Detection: Incorporates acceleration and microprocessor unit (MPU) detection
for comprehensive monitoring. .

Technical Specifications
●Dimensions: 13x 19 x 6 inches.
●Enclosure Type: IP56.
Features: Bulkhead mount, HV/HV, Ind relay.
●High Input Voltage: Nominal 115 Vac / 240 Vac/ 125 Vdc.
●Low Input Voltage: Nominal 24 Vdc.
●Operating Temperature: -20 to +60 °C. .
Overvoltage Category: II (per IEC 60664-1).
Storage Temperature: -20 to +65 °C.
Weight: Approx 26 Ib.
●Keypad/Display: 15 Keys per module.
●Trip Outputs: Three non-voted trip relays.
Communication: Modbus.
Speed Readout: 4-20 mA.
●Environmental Protection: Conformal coating for resistance to H2S and SO2 gases.
●Installation: Fits into a 24- inch standard cabinet.
Reliability: 2-out-of-3 voted architecture with triple redundancy.
Module Replacement: Easy module replacement during operation.
Module Learning: Supports module-to-module learning functions.
●Acceleration Detection: Integrated acceleration detection.
●MPU Detection: Microprocessor unit detection for enhanced monitoring.
Input Channels: Up to 6 tachometer inputs, 3 analog inputs.
●Output Channels: 3 form C relays, 2 digital outputs.
●Power Supply: 115 Vac, 240 Vac, 125 Vdc, 24 Vdc.
Frequency Range: 45 to 65 Hz.