GE IS215UCVEM06A Boards & Turbine Control 2 BUS CHANNEL CONTROL MARK VI

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Description:

The module supports a specific voltage range, which may vary depending on the application requirements. It can accommodate a wide range of voltage levels, such as 0-10V, -10V to +10V, or other specified ranges.

The module may feature built-in signal conditioning capabilities to accurately convert the analog voltage signals into a digital format that can be processed by the automation system.

The module is typically designed for easy installation and integration into standard racks or cabinets. It may feature connectors or terminals for efficient wiring and connection with other devices.

The VTUR board is designed to integrate several of the unique sensor interfaces used in turbine control systems on a single board. In some applications, it works in conjunction with the I/O interface in the backup protection module described below.

Two additional passive speed sensors can be monitored by each of the three sections of the backup protection module used for emergency overspeed protection on turbines that do not have a mechanical overspeed bolt. IONet is used to communicate diagnostic and process data between the backup protection module and the control module(s) including cross-tripping capability; however, both modules will initiate system trips independent of the IONet.

Synchronizing: The synchronizing system consists of automatic synchronizing, manual synchronizing, and backup synch check protection. Two single phase PT inputs are provided on the TTUR terminal board to monitor the generator and line busses through the VTUR board. Turbine speed is matched to the line frequency, and the generator and line voltages are matched prior to giving a command to close the breaker through the TTUR.

An external synch check relay is connected in series with the internal K25P synch permissive relay and the K25 auto synch relay through the TTUR. Feedback of the actual breaker closing time is provided by a 52G/a contact from the generator breaker (not an auxiliary relay) to update the database. An internal K25A synch check relay is provided on the TTUR; however, the backup phase / slip calculation for this relay is performed in the backup protection module or through an external backup synch check relay.