GE IS200EISBH1A OBS: EX2100, IN-SYNCH-BUS

الوصف

The GE part number IS200EISBH1A is an In-Synch Bus Card for the EX2100 Excitation Control System. The “OBS” in the description indicates that it’s an obsolete component. Its primary function is to synchronize the firing pulses for the multiple Silicon Controlled Rectifiers (SCRs) in the exciter’s rectifier bridge, ensuring they are all “fired” in-phase for stable and efficient operation. ⚡

Function and Key Features

A generator’s excitation system uses a rectifier bridge to convert AC power into the DC power needed for the generator’s field windings. This process involves the precise firing of multiple SCRs. The EISB board manages this critical timing.

• Pulse Synchronization: The board acts as a synchronizing hub. It receives the master timing signal from the main control board and distributes a precisely timed signal to the Gate Pulse Amplifier (GPAA) cards. This ensures that all the SCRs in the bridge fire at the exact same moment, which is necessary for stable control and to prevent harmonic distortion.
• Redundancy: In some configurations, the board also facilitates the synchronization between redundant exciter channels, ensuring a bumpless transfer in case of a failure.
• System Integration: The EISB card works in conjunction with the main control card (like a DSPX) and the GPAA cards to form the complete excitation control system. It’s a key part of the control chain that directly impacts the quality of the generator’s output.
• Obsolete Status: The “OBS” status means the part is no longer in production by GE. This is common for legacy systems like the EX2100, and a replacement or a system upgrade is often recommended.

Applications

The IS200EISBH1A is a legacy component primarily found in older power generation facilities. It is an essential component for:

• Excitation Control: It provides the data necessary for the EX2100 system to precisely control the generator’s voltage and reactive power.
• Power Quality: By ensuring the SCRs are synchronized, it helps to minimize harmonics and maintain a high-quality power output from the generator.