Product Summary
The IS200EPCTG1A is a critical input/output terminal board from the GE EX2100 series. It receives and conditions generator current and potential transformer feedback. This board scales and isolates signals for reliable excitation control system operation.
Expert Technical Evaluation & Performance Review
Core Function and Signal Conditioning
The IS200EPCTG1A board functions as a dedicated signal conditioner. It processes generator voltage and current feedback from PTs and CTs. This board provides galvanic isolation using onboard transformers. It ensures accurate measurement for the EX2100 excitation control system. The board accepts two three-phase generator PT voltage inputs. It also handles CT current inputs at 1 A or 5 A levels. The PT input burden remains less than 1 VA for minimal system load.
Generator Voltage Measurement Precision
For voltage measurement, the board uses two isolation transformers. These transformers create a three-wire open delta configuration. This setup produces 1.533 V rms for a standard 115 V rms input. The PT inputs operate at 50/60 Hz and are fused for protection. This design provides a scaled, isolated signal for the EMIO board. It ensures high fidelity in generator voltage feedback.
Generator Current Measurement and Wiring
The board accepts current inputs from two generators. It handles standard current levels of 1 A or 5 A. Wiring connects through terminal block TB1 using switches. The system supports wire gauges up to 10 AWG. Cable runs can extend up to 1000 feet without signal degradation. This flexibility simplifies field wiring in large power plants.
Analog Input and Configuration
The IS200EPCTG1A includes one non-isolated analog input. This input accepts a voltage range of 0-10 V dc. It also accepts a current range of 4-20 mA. A jumper, JP1, selects the input type. Cable resistance must not exceed 15 ohms for runs up to 300 meters. This input allows integration of external sensors.
Environmental and Physical Specifications
The board operates in harsh industrial environments. Its temperature range spans from -30 to 65 ºC. It requires a power supply voltage of 28 V dc. The board measures 23.8 cm high and 8.6 cm wide. Its lightweight design weighs only 0.45 kg. This robust construction ensures long-term reliability.
Redundancy and System Integration
For maximum system reliability, you can use up to three EPCT boards. This redundancy ensures continued operation during a board failure. All output signals cable directly to the EMIO board in the control rack. The removable terminal block TB1 simplifies maintenance and replacement. Two screws secure TB1 for easy removal during service.
Logistics & Standard Packaging Details
- One GE IS200EPCTG1A Exciter PT/CT Terminal Board
- The board is individually packaged in an anti-static bag
- Protective foam padding is used for safe transit
- Standard packaging includes a sturdy cardboard box
- Express delivery shipping is available via FedEx, UPS, and DHL
