9905-752 独立速度感应单元 激活跳闸继电器

【产品详情】

Woodward ProTech 203 型号 9905-752 带有三个相同的封闭式独立速度感应单元，用于监控原动机速度和激活跳闸继电器

该超速保护装置是伍德沃德ProTech 203系列的一部分。9905-752 型是断电跳闸型号，具有两个 24 Vdc 输入速度感应单元和一个 220 Vac 输入速度感应单元。这三个单元具有独立的电源、独立的前面板和单独的 LED 功能状态指示灯，但都包含在一个锁定的 NEMA 4X 认证外壳中。

除了电压输入外，伍德沃德 9905-752 系统中的速度感应单元是相同的。这些单元独立运行以监控原动机速度并执行速度计算。9905-752 型中的三个单元以三分之二的投票配置连接，如果检测到超速，则激活跳闸继电器。

如果检测到超速并且超过之前的峰值速度，则会记录新的峰值速度并将其存储在非易失性存储器中。跳闸的机组将保持跳闸状态，直到重新通电或复位机组，并且在启动涡轮机之前必须重置所有三个机组。

9905-752 设备的可用特性和功能包括远程复位、热更换、用于访问 PROGRAM 模式的钥匙锁、内置自检和报警输出。

如果发生错误，LED 指示灯和前面板 LCD 显示屏都会提供信息。故障排除指南以及其他功能和产品规格在 ProTech 203 手册 85196 中有详细说明。

9905-752 独立速度感应单元 激活跳闸继电器

【英文介绍】

Woodward ProTech 203 Model 9905-752 comes with three identical enclosed independent speed sensing units for monitoring prime mover speed and activating trip relays

The overspeed protection is part of the Woodward ProTech 203 series. Model 9905-752 is a power trip model with two 24 Vdc input speed sensing units and one 220 Vac input speed sensing unit. The three units feature separate power supplies, separate front panels and separate LED function status indicators, but are all contained in a locked NEMA 4X certified housing.

Except for the voltage input, the speed sensing unit in the Woodward 9905-752 system is the same. These units operate independently to monitor the prime mover speed and perform speed calculations. The three units in the model 9905-752 are connected in a two-thirds voting configuration and the trip relay is activated if overspeed is detected.

If overspeed is detected and the previous peak speed is exceeded, the new peak speed is recorded and stored in non-volatile memory. A unit that has tripped will remain in a tripping state until the unit is re-energized or reset, and all three units must be reset before the turbine can be started.

Features and functions available for the 9905-752 device include remote reset, hot change, key lock for access to PROGRAM mode, built-in self-test and alarm output.

If an error occurs, both the LED indicator and the front panel LCD display provide information. Troubleshooting guidelines and other features and product specifications are detailed in ProTech 203 manual 85196.

9905-752 独立速度感应单元 激活跳闸继电器

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