Description

ProTech-GII is a configurable overspeed detection system designed to safely shut down various sizes of steam, gas, and hydraulic turbines when overspeed or over acceleration events are detected. Provide two dual redundant trip relay outputs using a two out of three voting architecture, or three independent non voting trip relay outputs with separate alarm relays, 4-20 mA speed readings, and Modbus ® Communication makes it possible for this overspeed device to be easily integrated into any turbine safety system. This ProTech GII model is a panel mounted, high/low voltage power input, independent relay safety device for turbine overspeed protection.

　　Features and functions

　　Acceleration detection

ProTech-GII can also be configured to protect turbines from high acceleration events. The derivative of the speed signal is used to detect turbine acceleration and issue related tripping commands.

Host detection

 

 

The speed sensor input of each module uses a special MPU open circuit detection circuit to verify whether the MPU is correctly connected before turbine operation, and uses a special speed loss detection logic to verify the MPU function during turbine operation.

Automatic overspeed test program

 

 

You can choose to configure ProTech-GII to perform routine overspeed testing on each module, and then record and report the test results. Through this testing routine, each module uses an internal frequency generator to simulate overspeed conditions and complete its testing sequence.

　　Resistance to sulfur pollution

ProTech-GII uses a special conformal coating material that demonstrates excellent long-term protection against H2S and SO2 gases in the international standard IEC 721-3-1994- Environmental Class 3C2.

Online maintenance

 

 

The triple modular design of ProTech-GII allows users to easily replace one of the modules (A, B, C) while the turbine is online and running normally. The device’s backplane plug and play structure and its module to module learning function enhance the convenience of replacement. 1. High alarm accuracy

The intelligent video analysis system is equipped with intelligent algorithms that can eliminate the interference of climate and environmental factors, effectively compensate for the shortcomings of manual monitoring, and reduce the overall false alarm rate and false alarm rate of the video monitoring system.

　　2. Real time recognition of alarms

Based on intelligent video analysis, real-time monitoring of vehicle speed is carried out. When a vehicle is detected to be speeding and abnormal behavior is detected, an alarm is immediately triggered. The alarm information can be displayed on the monitoring client interface or pushed to the mobile terminal.

　　3. Stable and reliable operation 24/7

The intelligent video monitoring system can perform 7 × Continuous analysis on a 24-hour basis greatly improves the utilization of video resources and reduces the workload of manual monitoring.

　　4. Alarm storage function

Real time monitoring of vehicle speed. When a vehicle is detected to be speeding and abnormal behavior is detected, an alarm is immediately triggered and the alarm information is stored in the server database, including time, location, snapshot, video, etc.

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WOODWARD 8237-1368