9905-981 超速保护系统 显示每个测速探头
【产品详情】
伍德沃德 ProTech 9905 系列的 981 系列通电 203-<> 装置。显示每个测速探头的实际速度、最高速度信号以及在线/远程测试功能。
第 9905-981 部分属于伍德沃德制造的 ProTech 203 超速保护系统系列。该型号是通电跳闸版本之一，因此如果该系统要满足API 612超速跳闸规范，则必须连接冷盘管监控设备 。
三个磁性拾音器（MPU），每个速度感应单元一个，持续监控原动机速度。每个单元 A、B 和 C 驱动两个选民接力。这三个单元的配置使得三分之二的硬件投票确定是否激活跳闸继电器。如果检测到超速情况，单个设备就会跳闸，但只要三个单元中的两个在线，系统就会继续运行。
9905-981 超速保护系统设计用于工作温度范围为 –25 至 +60 °C（–13 至 +140 °F ）的位置，显示器的工作温度范围为 –15 至 +60 °C （+5 至 +140 °F）。该设备需要足够的通风空间，并且应防止振动、电磁干扰、阳光直射和潮湿。
ProTech 203 手册 85195 还有其他位置注意事项和产品规格。本手册包含有关 9905-981 功能（如热更换、内置自检和在线测试）的深入信息。
为确保遵循正确的安装和操作要求和程序，还应审查手册 82715、82510 和 50532。
9905-981 超速保护系统 显示每个测速探头
【英文介绍】
Woodward ProTech 9905 series 981 Powered 203-<> device. Displays the actual speed of each probe, the maximum speed signal, and online/remote test functions.
Parts 99005-981 are part of the ProTech 203 overspeed protection system family manufactured by Woodward. This model is one of the power-on trip versions, so if the system is to meet the API 612 overspeed trip specification, a cold-coil monitoring device must be connected.
Three magnetic pickups (MPUs), one for each speed sensing unit, continuously monitor the prime mover speed. Each cell A, B and C drives two voter relays. These three units are configured so that two-thirds of the hardware votes on whether to activate the trip relay. If an overspeed situation is detected, a single device will trip, but as long as two of the three units are online, the system will continue to operate.
The 9905-981 overspeed protection system is designed for use in locations with an operating temperature range of -25 to +60 °C (-13 to +140 °F) and displays with an operating temperature range of -15 to +60 °C (+5 to +140 °F). The equipment requires adequate ventilation space and should be protected from vibration, electromagnetic interference, direct sunlight and moisture.
ProTech 203 Manual 85195 also has additional position considerations and product specifications. This manual contains in-depth information about the 9905-981 features such as hot change, built-in self-test, and online testing.
Manuals 82715, 82510 and 50532 should also be reviewed to ensure proper installation and operation requirements and procedures are followed.
9905-981 超速保护系统 显示每个测速探头
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