Description

GE IS200EXAMG1BCB Exciter Analog Attenuator Module

Technical Specifications

• Product Model: IS200EXAMG1BCB
• Brand: GE
• Warranty: One Year
• Input Voltage: Field‑excitation AC/DC feedback signals; backplane 5 V DC logic supply
• Operating Temperature: ‑20 °C ~ +70 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: High‑speed signal conditioning < 1 ms
• Protection Class: IP20 (cabinet rack‑mount PCB assembly)
• Accuracy Class: ±0.05 % full‑scale excitation measurement grade
• Output Frequency: Not applicable
• Rated Current: 320 mA maximum backplane consumption
• Signal Handling: Generator field voltage & field current attenuation, scaling and filtering
• Isolation Rating: 2500 V isolation between high‑voltage field circuits and control logic
• Conformal Coating: Applied for harsh plant environment resistance
• Communication: HSSL high‑speed serial link to exciter DSPX controller board
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.52 kg
• Dimensions: 310 × 190 × 30 mm

Product Overview

The IS200EXAMG1BCB is an exciter analog attenuator PCB board for GE EX2100 / EX2100e generator excitation control systems paired with Mark VIe turbine controls. It takes high‑amplitude generator field voltage and field‑current feedback signals from the excitation power bridge, performs precision attenuation, signal scaling, noise filtering and galvanic isolation before forwarding conditioned analog values to the DSPX exciter controller.

This board delivers accurate real‑time field‑winding measurement data which forms the core closed‑loop feedback for generator voltage regulation, over‑excitation and under‑excitation protection functions. The BCB suffix defines specific component revision and conformal‑coated variant for high‑humidity, corrosive plant environments. Multi‑layer surge‑suppression circuits protect downstream control electronics against transients from thyristor bridge switching. Status test points enable convenient on‑site signal verification during commissioning and troubleshooting. It is an ESD‑sensitive VME‑format circuit board designed for installation inside the exciter control cabinet.

Application Notes

• Designed exclusively for GE EX2100 and EX2100e static excitation systems under Mark VIe turbine‑generator control platform.
• Must work cooperatively with DSPX controller board via HSSL serial bus.
• Strict ESD‑handling requirements; anti‑static wrist straps are mandatory during installation and replacement.
• Not hot‑swappable under live excitation operating conditions; cut off all field‑side high‑voltage power before servicing.
• Install within climate‑controlled industrial cabinet; avoid dust, moisture and corrosive gas exposure.
• Verify hardware revision compatibility when replacing spare parts; mixing different board revisions may degrade measurement accuracy.
• Follow GE official EX2100 system service manual for calibration after board replacement.
• Original OEM production discontinued; supplied as refurbished / surplus industrial spare part for combined‑cycle power plants, thermal power stations, gas‑turbine generator excitation cabinet maintenance and retrofits.