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IS200EPCTG1A

GE IS200EPCTG1A Simplex Exciter PT CT Terminal Module

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  • Manufacturer: General Electric

  • Product No.: IS200EPCTG1A

  • Product Type: Terminal Board

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 450g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Product Overview

The General Electric IS200EPCTG1A (functional acronym EPCT) is an Exciter PT/CT Input/Output Terminal Board developed for the GE EX2100 Series Excitation Control System. Designed for process-critical power generation environments, this module receives, conditions, scales, and isolates feedback signals from potential transformers (PTs) and current transformers (CTs) directly monitoring two three-phase generator lines.

Operating on a 28 V DC power supply, the IS200EPCTG1A features integrated isolation transformers (T1 through T6) that convert high-level generator feedback signals into low-voltage signals routed via J305, J308, and J315 connectors to the main controller boards (such as EMIO in M1, M2, or C controllers). Weighing 0.45 kg (0.99 lbs) with compact dimensions of 23.8 cm x 8.6 cm, the board operates across an extended industrial temperature range of -30°C to +65°C.

Core Technical Advantages

  • Comprehensive Signal Isolation: Six internal isolation transformers (T1–T6) scale and isolate 115 V rms PT inputs and 1 A/5 A CT current signals for safe system feedback.
  • Simplex & Triple Redundant Support: Fully scalable for Simplex systems or redundant control architectures using up to three EPCT boards in parallel.
  • Flexible Analog Input Configuration: Features jumper JP1 selection to accept either 0–10 V DC or 4–20 mA field analog instrumentation signals.
  • Enhanced Terminal Safety: Features non-removable TB2/TB3 terminal blocks to prevent hazardous CT open-circuit conditions during operational service.

Technical Specifications

Parameter Specification Details
Brand / Manufacturer General Electric (GE)
Part / Catalog Number IS200EPCTG1A
Functional Acronym EPCT (Exciter PT/CT Terminal Board)
System Compatibility GE EX2100 Excitation Control System
PT Input Rating 115 V rms @ 50/60 Hz (Two 3-phase generator PT inputs)
PT Step-Down Voltage Output 1.533 V rms (from 115 V rms 3-wire open delta input)
CT Input Rating 1 A or 5 A nominal inputs from two generators
PT/CT Input Burden Less than 1 VA
Auxiliary Analog Input 1 Channel: 0 to 10 V DC or 4 to 20 mA (Jumper JP1 selectable)
Power Supply Voltage 28 V DC
Terminal Blocks & Wiring 3 Blocks (TB1 removable; TB2/TB3 fixed); supports up to #10 AWG
Board Dimensions 23.8 cm High x 8.6 cm Wide (9.37 in x 3.38 in)
Net Board Weight 0.45 kg (0.99 lbs)
Operating Temperature -30°C to +65°C (-22°F to +149°F)

Installation & Gap Calibration Guide

  • Field Wiring Connection: Wire CT and PT secondary signals to terminal block TB1 using up to #10 AWG cable (maximum run length 1,000 feet / 300 meters).
  • Jumper Configuration: Set jumper JP1 to configure the auxiliary analog input for either 0–10 V DC voltage or 4–20 mA current mode prior to powering up.
  • CT Safety Notice: Ensure terminal blocks TB2 and TB3 remain permanently attached to prevent dangerous open-circuit voltage spikes across live CT secondaries.

Technical FAQs

Q1: What is the main function of the GE IS200EPCTG1A terminal board?
A1: It conditions, isolates, and scales generator PT and CT feedback signals for EX2100 exciters. (94 chars)

Q2: Why are terminal blocks TB2 and TB3 non-removable on the IS200EPCTG1A?
A2: They are fixed to protect personnel and equipment from open-circuit CT high-voltage hazards. (95 chars)

Q3: How are secondary signals routed to EX2100 system controllers?
A3: Isolated secondary signals are cabled via J305, J308, and J315 connectors to the EMIO board. (93 chars)

🏷️ Tags: General Electric Terminal Board
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