8237-1246 ProTech-GII 微控制器检测

加速度检测
可选的protect – gii也可以配置为保护涡轮机免受高加速度事件的影响。速度信号的导数用于检测涡轮加速度并发出相关的行程命令。
微控制器检测
每个模块的速度传感器输入使用特殊的MPU开线检测电路，以验证MPU在涡轮机运行前是否正确连接，以及特殊的失速检测逻辑，以验证涡轮机运行期间MPU的功能。
自动超速测试程序
ProTech-GII可选择配置为对每个模块例行执行超速测试，然后记录和报告测试结果。有了这个测试例程，每个模块使用一个内部频率发生器来模拟超速情况，通过它的测试序列。
抗硫污染
protect – gii采用一种特殊的保形涂层材料，在国际标准IEC 721-3-3 1994 -环境等级3C2中，对H2S和SO2气体具有出色的长期保护作用。
在线修复
protect – gii的三模块设计允许用户在涡轮机在线和正常运行时轻松更换其中一个模块(A, B, C)。该装置的背板即插即用结构以及模块对模块的学习功能增强了更换的便利性。

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Acceleration Detection

• Optionally the ProTech-GII can be configured to protect a turbine from high acceleration events also. The derivative of the speed signal is used to detect turbine acceleration and issue an associated trip command.

MPU Detection

• Each module’s speed sensor input uses special MPU open-wire detection circuitry to validate that the MPU is properly connected before turbine operation, and special loss-of-speed detection logic to validate MPU functionality during turbine operation.

Automatic Overspeed Test Routine

• Optionally the ProTech-GII can be configured to routinely perform an overspeed test of each module, then log and report the test results. With this test routine, each module goes through its test sequence using an internal frequency generator to simulate an overspeed condition.

Sulfur Contamination Resistant

• The ProTech-GII utilizes a special conformal coating material that has demonstrated excellent long-term protection against H2S and SO2 gases at levels classified in international standard IEC 721-3-3 1994 – environment Class 3C2.

On-line Repair

• The ProTech-GII’s triple-modular design allows users to easily replace one of its modules (A, B, C) while the turbine is on-line and operating normally. Ease of replacement is enhanced by the unit’s backplane plug-and-operate structure, and its module-to-module learning function.