Description

GE IS200EPCTG1A Exciter PT/CT Terminal Board

Configured for generator PT/CT signal acquisition and conditioning in the GE EX2100 Excitation Control System, the GE IS200EPCTG1A (IS200EPCT Exciter PT/CT Terminal Board) provides direct physical/electrical execution for voltage and current feedback interface functions. The board receives three-phase PT and CT measurement signals, performs signal conditioning, and transfers isolated measurement outputs to the excitation control rack.

Hardware Specifications

Parameter	Specification
Model	IS200EPCTG1A
Brand	GE
Origin	United States
Board Type	Exciter PT/CT Terminal Board
Series	EX2100 Excitation Control System
Input Signals	2 x 3-phase PT inputs, 2 x CT inputs
PT Input Rating	115 V rms, 50/60 Hz
CT Input Rating	1 A / 5 A
Analog Output	0-10 V or 4-20 mA
Input Burden	<= 1 VA
Signal Isolation	500 Vrms
Power Supply Voltage	28 VDC
Weight	0.98 kg
Dimensions	33.1 cm x 11.5 cm x 4.5 cm
Operating Temp	-30 to +65 deg C
Power Consumption	Not specified

Firmware Flash Compatibility and Excitation Control Interface

The IS200EPCTG1A operates as an EX2100 excitation system terminal interface board, providing PT/CT measurement routing between generator sensing devices and the excitation controller. The board supports industrial control signal conditioning through dedicated analog input paths and isolated output channels.

The module integrates with GE excitation control assemblies using backplane communication structures. Its design supports firmware flash compatibility within the EX2100 control platform and allows I/O density scaling through coordinated terminal board configurations.

The PT/CT interface maintains measurement signal integrity by applying input scaling, electrical isolation, and signal filtering. Differential signal handling reduces interference from field wiring environments and supports stable generator voltage and current regulation loops.

Frequently Asked Questions

Q: What measurement signals are connected to the IS200EPCTG1A?
A: The board accepts generator PT voltage feedback signals and CT current feedback signals from excitation system sensing circuits.

Q: What isolation function is provided by the IS200EPCTG1A?
A: The board provides electrical isolation between PT/CT field measurement circuits and the excitation control electronics to limit fault transfer.

Q: What EX2100 system role does this board perform?
A: The IS200EPCTG1A functions as a PT/CT terminal interface board for generator voltage and current feedback processing within the EX2100 excitation control system.

Field Installation Guidelines

Install the IS200EPCTG1A in the designated EX2100 chassis backplane position and verify terminal assignments before connecting PT and CT field wiring. Use properly rated wiring for generator measurement circuits and maintain separation between analog measurement cables and high-current power conductors.

Connect cable shields according to the excitation cabinet grounding design to reduce EMI/RFI interference. Confirm CT polarity, PT phase sequence, and signal reference points before system energization. Verify all terminal connections and isolation requirements during commissioning.

Specifications

• Brand: General Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems