Woodward ProTech 203 超速保护系统通过监测三路独立的磁阻发讯器（MPU）来的信号，为蒸汽轮机、燃气轮机或其它原动机提供超速保护。特别是对于高转速 gt;10, 000 rpm）时机械超速保护装置已变得不可靠的情况下，可使用ProTech 203 替代。Woodward ProTech 203 也能用作保护和安全系统中的一个部件，以允许总体系统达到IEC62508 SIL-3等级或符合API-670标准。ProTech不存在机械磨损，不受温度或其它大气条件、与透平旋转部件等有关因素的影响。因为不涉及到机械旋转部分的磨损等问题，ProTech可以长时间的保持停机转速设定值不变。
当发生超速停机时，ProTech可记录显示透平所达到的峰值转速。因为转速越高损坏越大，此峰值转速可为估量损坏程度提供参考依据。当ProTech系统运转时可更换其中一个单元，此时另两个单元继续工作。当某一单元出现故障时，这种在线更换提供了不间断超速保护。ProTech 203超速保护系统响应速度快、可编程、高精度和重复性好，并符合多个认证标准
Woodward Protech 203 overspeed protection system provides overspeed protection for steam turbine, gas turbine or other prime movers by monitoring signals from three independent magnetoresistive transmitters (MPU). Especially for high speed gt; When the mechanical overspeed protection device has become unreliable at 10, 000 rpm), Protech 203 can be used instead. Woodward Protech 203 can also be used as a component in the protection and safety system to allow the overall system to reach iec62508 sil-3 or api-670. Protech is free from mechanical wear and is not affected by temperature or other atmospheric conditions, and factors related to turbine rotating parts. Because it does not involve the wear of mechanical rotating parts, Protech can keep the set value of shutdown speed unchanged for a long time.
When an overspeed shutdown occurs, Protech can record and display the peak speed reached by the turbine. Because the higher the speed, the greater the damage, this peak speed can provide a reference basis for estimating the degree of damage. When the Protech system is running, one unit can be replaced, while the other two units continue to work. This online replacement provides uninterrupted overspeed protection when a unit fails. The Protech 203 overspeed protection system is fast, programmable, accurate and repeatable, and meets multiple certification standards
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