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IS200ECTBG2A

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General Electric IS200ECTBG2A Exciter Contact Terminal Board provides simplex EX2100 contact termination for generator status, lockout, trip and general-purpose relay circuits.
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Technical specifications for IS200ECTBG2A

  • Manufacturer:
    General Electric
  • Part Number:
    IS200ECTBG2A
  • Product Family:
    GE Excitation Control
  • Product Type:
    Exciter Contact Terminal Board
  • Stock:
    1
  • Control arrangement:
    Simplex EX2100
  • General-purpose contact inputs:
    6
  • Dedicated contact inputs:
    52G online and 86G lockout
  • Contact wetting supply:
    70 V dc from the exciter
  • General-purpose relay outputs:
    4 Form C
  • Trip relay outputs:
    2
  • Customer output power:
    125 V dc nominal; 24 V dc minimum
  • Inductive-load suppression:
    Externally supplied by customer
  • 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 Input Logic Output Loads EMIO Interface Service Checks

Features:

  • Separates the simplex controller from customer contact wiring.
  • Combines dedicated generator-status and lockout inputs with general I/O.
  • Monitors relay actuation through coil-current and auxiliary-contact feedback.
The G2 arrangement sends its control path to M1 rather than duplicating connections across three controllers.

Input circuits use exciter-supplied wetting voltage, allowing dry field contacts to be supervised without an external sensing supply.

Output terminals separate protective trip duties from Form C general-purpose switching so each circuit can retain its intended load class.

Apter Power can assist with quotation and official documentation requests for the General Electric IS200ECTBG2A Exciter Contact Terminal Board.
General Electric IS200ECTBG2A Exciter Contact Terminal Board Manuals, Datasheets, LinksImportant 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.

Tracing the supervised contact paths

  • 52G state: A closed generator contact represents the online condition at the dedicated input.
  • 86G action: Opening the lockout contact produces the trip indication used during normal operation.
  • Auxiliary points: Six additional customer contacts share the board’s supervised input architecture.
  • Wetting source: The isolated 70 V dc supply comes from the exciter power system.

Keeping relay duties within their ratings

  • Form C bank: Four changeover outputs serve annunciation and other general control functions.
  • Trip contacts: Two separate relays are reserved for protective trip service.
  • DC loads: The published break capacity changes with resistive or inductive load behavior.
  • Transient control: Inductive devices need suppression at the load rather than relying on the terminal board.

Following command and proof signals

  • Relay command: EMIO drives each general-purpose relay through the simplex control connection.
  • Coil supervision: Current feedback reveals whether an energized relay coil actually carries current.
  • Contact proof: An auxiliary contact reports mechanical relay state independently of the command.
  • Cable identity: The simplex harness must return to its assigned M1 connector after service.

Restoring a simplex contact assembly

  • De-energize: Isolate customer dc circuits and the exciter wetting supply before disturbing terminals.
  • Mark conductors: Keep dedicated contacts, commons and normally open or closed leads distinguishable.
  • Inspect terminals: Look for loosened ring lugs, damaged blocks and signs of dc switching heat.
  • Functional test: Prove 52G, 86G, one general input and each required relay path before release.
Description
General Electric IS200ECTBG2A Exciter Contact Terminal Board is the simplex EX2100 interface for customer contact inputs and relay outputs used by the excitation controller.

Two dedicated circuits on IS200ECTBG2A accept the 52G generator-online contact and the 86G lockout contact, while six additional inputs use exciter-supplied 70 V dc wetting.

Four Form C relays and two trip-rated relays give IS200ECTBG2A separate paths for general annunciation and protective action; EMIO also monitors relay-coil current and auxiliary-contact state.

Customer output circuits connected to IS200ECTBG2A use nominal 125 V dc power, with externally supplied suppression required where inductive loads could create switching transients.
Alternative Names
IS200 ECTB G2A GE IS200ECTBG2A IS-200-ECTBG-2A I5200ECTBG2A General Electric IS200ECTBG2A IS200ECTB G2A IS 200ECTBG2A IS200 ECTBG2A
Technical notes
Unlike the redundant G1 layout, IS200ECTBG2A routes its customer contact I/O through the simplex controller path without three-way fan-out.
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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.
Why can’t IS200ECTBG2A replace a redundant ECTB without rewiring?
IS200ECTBG2A is the simplex version; a redundant ECTB fans signals to three controllers and uses a different termination arrangement.
How should a false generator-online state be traced through IS200ECTBG2A?
Check the 52G contact path and 70 V dc wetting at IS200ECTBG2A before tracing the signal onward to EMIO.
What protects IS200ECTBG2A relay contacts when an inductive load is switched?
IS200ECTBG2A requires customer-supplied external suppression on inductive output loads to limit switching transients.
Why might an IS200ECTBG2A output command fail to prove back correctly?
Inspect the relay-coil current and auxiliary-contact feedback associated with IS200ECTBG2A, then verify the corresponding EMIO channel.
Which wiring error can make the IS200ECTBG2A lockout input appear permanently tripped?
An open 86G path indicates trip, so IS200ECTBG2A terminal continuity and the field contact state must both be checked.
Can IS200ECTBG2A general-purpose relays switch every 125 V dc load directly?
No. IS200ECTBG2A loads must stay within the documented break ratings, and inductive circuits need external suppression.
What must be preserved when an IS200ECTBG2A terminal block is moved during service?
Keep the IS200ECTBG2A terminal numbering, 52G/86G assignments, relay commons and the simplex controller cable aligned.