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IS200EGPAG1B

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General Electric IS200EGPAG1B is an EX2100 exciter gate pulse amplifier board that converts ESEL commands into firing pulses for six power-bridge SCRs.
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Technical specifications for IS200EGPAG1B

  • Manufacturer:
    General Electric
  • Part Number:
    IS200EGPAG1B
  • Product Family:
    GE Excitation Control
  • Product Type:
    Exciter Gate Pulse Amplifier Board
  • Stock:
    1
  • Functional Acronym:
    EGPA
  • Command Source:
    ESEL board
  • Gate Outputs:
    Six SCR firing pulses
  • Cabinet Location:
    Power conversion cabinet
  • Feedback Interfaces:
    Conduction, airflow and temperature
  • Control Power:
    Nominal 125 V dc via EPDM
  • Thermal Thresholds:
    76 °C alarm; 87 °C trip
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Gate Output Paths Bridge Feedback Thermal Response Power & Placement

Features:

  • Routes six selected gate commands to separate SCR firing channels.
  • Returns bridge-conduction and cooling-status signals to the control.
  • Uses independent thermal contacts for alarm and trip thresholds.
IS200EGPAG1B serves as the local firing interface inside an EX2100 power conversion module.

Its G1 bridge assignment covers assemblies using 77 mm or smaller thyristors.

A single IS200EGPAG1B is associated with each power conversion module, keeping pulse generation and bridge status tied to the same hardware section.

The General Electric IS200EGPAG1B Exciter Gate Pulse Amplifier Board is supported by Apter Power with quotation and technical assistance.
General Electric IS200EGPAG1B Exciter Gate Pulse Amplifier Board Manuals, Datasheets and Links Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Command-to-Firing Flow

  • Input Command: Logic-level gate requests arrive from ESEL
  • Channel Count: Six independent firing outputs are provided
  • Load Side: Each output connects to one SCR gate path
  • Local Function: The selected commands are amplified beside the bridge

Returned Operating Signals

  • Conduction Status: Current-conduction feedback returns from the bridge interface
  • Cooling Input: An airflow-detector status is accepted
  • Temperature Input: Heat-sink switch states are monitored
  • Control Return: Operating conditions travel back with the firing-interface status

Two-Stage Temperature Logic

  • Alarm Point: One thermal contact opens at 76 °C
  • Trip Point: Both thermal contacts open at 87 °C
  • First Stage: The initial switch state generates an overtemperature alarm
  • Second Stage: The combined state produces a fault and trip response

Conversion-Cabinet Interface

  • Supply Path: Nominal 125 V dc is distributed through EPDM
  • Physical Location: The board is installed in the power-conversion cabinet
  • Module Allocation: One EGPA board is assigned to each power conversion module
  • Control Connection: Cabling links the board to ESEL in the control section
Description
General Electric IS200EGPAG1B is an EX2100 exciter gate pulse amplifier board positioned between the control section and the power bridge. The board receives gate commands from ESEL and produces the firing pulses for six bridge SCRs.

Alongside pulse generation, IS200EGPAG1B returns current-conduction information and accepts bridge airflow and temperature status. These feedback paths allow the controller to supervise whether the commanded bridge hardware is conducting and being cooled.

Power for IS200EGPAG1B is supplied from the EX2100 control-power distribution path, while its thermal inputs distinguish an alarm condition at 76 °C from a trip condition at 87 °C in installations using the two-switch arrangement.
Alternative Names
IS200-EGPA-G1B IS 200 EGPA G1B IS200 EGPA G1B GE IS200EGPAG1B General Electric IS200EGPAG1B EX2100 IS200EGPAG1B EGPA G1B IS200EGPA-G1B
Technical notes
General Electric IS200EGPAG1B converts ESEL logic commands into six SCR firing outputs while returning bridge conduction, airflow and temperature status.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
An EX2100 bridge receives its gate command but one phase remains off—how should IS200EGPAG1B be checked?
At IS200EGPAG1B, compare the affected ESEL input, its gate-pulse output and the matching conduction feedback; this separates a lost board output from an SCR that did not conduct.
When airflow is normal but an IS200EGPAG1B thermal alarm persists, which circuit deserves separate attention?
The 76 °C alarm contact entering IS200EGPAG1B should be checked independently of the 87 °C trip contact, because the two-switch arrangement reports them at different stages.
Before replacing IS200EGPAG1B for loss of all six firing outputs, what shared sources should be ruled out?
Verify the ESEL command source and the nominal 125 V dc feed from EPDM to IS200EGPAG1B; either common path can affect all six channels at once.
Which cabinet boundary prevents IS200EGPAG1B from being confused with the upstream selector board?
IS200EGPAG1B belongs in the power-conversion cabinet at the bridge interface, while ESEL remains in the control path upstream of the pulse-amplifier board.
How can bridge feedback from IS200EGPAG1B separate a cooling fault from a nonconducting SCR?
Use the airflow and temperature inputs on IS200EGPAG1B to assess cooling, then compare them with the independent current-conduction return from the bridge.
Larger thyristors are planned for a replacement bridge; what compatibility point must be checked before retaining IS200EGPAG1B?
Confirm the device size before reusing IS200EGPAG1B, because its G1 configuration is assigned to bridges with 77 mm or smaller thyristors.

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