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8200-203 Woodward ProTech 203 consists of three identical, independent, speed-sensing units which continuously monitor prime mover speed and activate a trip relay when an overspeed condition is detected.
Product Description
There are two versions offered in the ProTech 203 Overspeed Protection series by Woodward: de-energize-to-trip and energize-to-trip. Model 8200-203 is the 120 Vac/dc input model of the de-energize-to-trip versions. This model consists of three separate, identical speed-sensing units, each with its own power supply. These units sense prime mover speed through magnetic pickups and perform individual speed calculations, which are then used in a two-out-of-three hardware vote.https://www.weikunfadacai1.com/
Model 8200-203 has a rich feature set, including remote reset, LED performance indicators, built-in self-test, an alarm output, and a key lock.
The LED performance indicators are located on the front panel of the units, alongside a touchpad and digital display. Together, the LEDs and digital display offer a quick, clear overview of the current functional status of the 8200-203 system.
The built-in self-test feature is achieved through a built-in frequency generator. This setup allows for individual units to be tested while the prime mover remains online. During testing of a unit, complete control is simply taken on by the two other units. This configuration also means that should anyone speed-sensing unit fail on the 8200-203, it can be replaced with little to no downtime required.
Additional features of and instructions for Woodward’s ProTech 203 Overspeed Protection model 8200-203 can be found in the company’s manual for the series: Installation and Operation Manual 85205 (F).
Reviews For 8200-203
Each subsystem can be replaced (after disconnecting the supply power at the external disconnecting means) while the other two subsystems are powered without tripping the prime mover.
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