IS200EACFG2B GE EX2100, EXCITER AC FEEDBACK

Description:

FUNCTIONAL OVERVIEW:

The IS200EACFG2B, a product of General Electric's EX2100 Series, is specifically designed for Excitation Control Systems. Functioning as an Exciter AC Feedback Board, it plays a crucial role in monitoring the exciter's PPT AC supply voltage and current within the EX2100 framework. This board integrates transformers to measure three-phase voltage and includes terminals for two Flux/Air core coils. Its design facilitates the distribution of voltage and current data across three DB9 connectors, enabling connections to controllers M1, M2, and C. Notably, the EACF board can be situated up to 90 meters away from the EBKP backplane board and is housed within the exciter auxiliary cabinet.

VERSIONS & SPECIFICATIONS:

Three distinct versions cater to varying input voltage requirements:
- EACFG1 accommodates inputs up to 480 V rms.
- EACFG2 handles inputs up to 1000 V rms.
- EACFG3 manages inputs up to 1300 V rms, with revisions BAA and later supporting up to 1400 V rms.

These boards incorporate high-frequency noise suppression close to the signal entry points for enhanced accuracy, especially in flux/air core input signals. Grounded cable shield terminal screws are strategically placed near input screws when applicable.

VOLTAGE MEASUREMENT CAPABILITIES:

Each version offers specific voltage measurement capacities:
- G1 supports single three-phase input voltages up to 480 V rms +20%, operable at both 50/60 Hz frequencies.
- G2 extends this range to 1000 V rms +20% under the same conditions.
- G3 further expands the limit to 1300 V rms +20%, with revision BAA and subsequent models accommodating up to 1400 V rms.

Potential transformers on these boards generate a standardized secondary output of 1.6 V rms, while air core current transformers produce a variable output ranging from 0 to 0.8 V rms at 50/60 Hz.

APPLICATION DETAILS:

The board layout features four key components: T1 through T4, which represent the three-phase voltage transformers. Screw connectors TB1, TB2, and TB3 serve as voltage input interfaces, whereas Terminal Block TB4 facilitates wiring from the Flux/Air core coils. Additionally, J504, J509, and J514—three 9-pin sub-D connectors—enable connectivity to the EBKP backplane and the associated EMIO boards.

Voltage testing is facilitated via test rings TP1-4, allowing users to measure phase voltage outputs as follows:
- TP1 to TP2 yields Phase to Phase (or Line) Voltage AB.
- TP3 to TP4 gives Phase to Phase Voltage BC.
- TP4 to TP1 measures Phase to Phase Voltage CA.

Datasheet Link:

IS200EACFG2B GE EX2100, EXCITER AC FEEDBACK PDF Datasheet