Description

8237-1600 technical specifications 13 x 17.5 x 6.25 (inches) enclosure type IP56 dustproof and waterproof (correctly installed) feature overvoltage protection II (according to IEC 60664-1) input voltage 2 high-voltage inputs or 1 high-voltage and 1 low-voltage surge current 10 A at 115 V AC, 20 A at 220 V AC keyboard/display 4.2 inch display screen and 15 buttons per module operating temperature -20 to+60 ° C, 95% humidity storage temperature -20 to+65 ° C, 95% humidity weight less than 23 pounds

　　Product Description

The 8237 1600 model can be configured for use with turbines of any size, as long as it is powered by steam, gas, or water. The speed reading of this over acceleration device is between 4 and 20 milliamperes. If the turbine begins to accelerate dangerously, the model will safely shut down any size of turbine. The panel installation has a back panel structure, which is easy to repair and replace. The 8237 1600 model can be easily integrated into any turbine system and comes with Modbus communication. In addition to acceleration detection, it is also equipped with MPU detection. The coating of this product gives it the ability to resist sulfur pollution and can be used in 3C2 level environments.

It has the international standard IEC 721-3-1994. 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-voltage/low-voltage power input, voting relay/voting input safety device used for steam turbine overspeed protection. It uses three independent trip relays, as well as low-voltage and high-voltage power inputs. The 8237 1600 model also uses a two out of three architecture.

The overspeed detection device adopts a triple module design and can be repaired while the system is online. One module can work while the other two modules are running. Products 8237-1600 can also be used for routine speed testing using internal generators and frequencies. Woodward has discontinued production of the turbine safety device. However, the model can still be sold, purchased, and repaired through AX Control.

 

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.

　　Model recommendation:

WOODWARD 8237-1368