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IS200EPCTG1A

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General Electric IS200EPCTG1A Exciter PT/CT Board conditions generator potential-transformer and current-transformer signals for GE EX2100 regulation and protection functions.
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Technical specifications for IS200EPCTG1A

  • Manufacturer:
    General Electric
  • Part Number:
    IS200EPCTG1A
  • Product Family:
    GE Excitation Control
  • Product Type:
    Exciter PT/CT Board
  • Stock:
    1
  • PT input channels:
    2 three-phase sets
  • PT input range:
    10-200 V rms; 115 V rms nominal
  • PT connection:
    Three-wire open delta
  • CT input channels:
    2; phases A and C
  • CT secondary options:
    0-1 A rms or 0-5 A rms
  • Nominal frequency:
    50/60 Hz
  • PT/CT burden:
    Less than 1 VA
  • Customer analog input:
    Jumper-selectable ±10 V dc or 4-20 mA
  • 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 PT Circuits CT Circuits Analog Input Signal Use

Features:

  • Conditions generator PT and CT signals before they reach EMIO.
  • Accepts two three-phase voltage sets and two phase-current measurements.
  • Provides one configurable customer analog input alongside instrument-transformer channels.
Open-delta transformer circuits reduce the 115 V rms nominal PT inputs to low-level feedback while maintaining the required phase relationships.

Phase A and C current channels accept either 1 A or 5 A CT secondaries through non-pluggable ring-terminal connections.

Controller calculations combine these conditioned signals to obtain electrical quantities used by regulation, limiting and protection.

Apter Power can help source and supply official manufacturer documentation for the General Electric IS200EPCTG1A Exciter PT/CT Board.
General Electric IS200EPCTG1A Exciter PT/CT Board Manuals, Datasheets, 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.

Maintaining generator-voltage measurements

  • Two sets: Dual three-phase inputs support the main and redundant PT measurement paths.
  • Input window: Each channel accepts 10-200 V rms with 115 V rms nominal operation.
  • Open delta: The transformer arrangement converts three-wire voltage into low-level feedback.
  • Long runs: Generator PT cables may extend to 1,000 ft when the permitted conductor is used.

Handling generator-current secondaries

  • Measured phases: The standard arrangement samples phase A and phase C.
  • Two ranges: Hardware supports either 0-1 A rms or 0-5 A rms CT inputs.
  • Terminal style: Non-pluggable blocks accept ring terminals so current circuits cannot be casually unplugged.
  • Burden: Each current path presents less than 1 VA to its transformer secondary.

Configuring the customer measurement channel

  • Voltage mode: Jumpers can select a bipolar ±10 V dc signal.
  • Current mode: The alternative setting accepts a 4-20 mA loop.
  • Sampling: EMIO acquires this channel at 2,000 samples per second.
  • Accuracy: The analog path performs better than 1% of full scale when correctly configured.

Linking conditioned inputs to control calculations

  • Voltage results: PT data supports generator magnitude, frequency, flux and line-voltage values.
  • Current results: CT data supplies current magnitude plus active and reactive current components.
  • Power functions: Combined phase relationships produce real power and reactive volt-amperes.
  • Protection inputs: The same measurements support limiter, regulator and protective control logic.
Description
General Electric IS200EPCTG1A Exciter PT/CT Board is the EX2100 signal-conditioning interface for generator voltage, generator current and one customer analog input.

Two three-phase PT channels on IS200EPCTG1A accept 10-200 V rms signals, with 115 V rms nominal inputs converted through transformers for the controller measurement path.

Generator current reaches IS200EPCTG1A from phase A and phase C CTs using either 1 A or 5 A secondary ranges; both CT and PT circuits present less than 1 VA burden.

The low-level outputs from IS200EPCTG1A feed EMIO, where controller software derives voltage, current, power, reactive power, frequency, flux and phase relationships used by regulation, limiting and protection.
Alternative Names
IS200EPCT G1A General Electric IS200EPCTG1A IS 200EPCTG1A I5200EPCTG1A IS200 EPCT G1A GE IS200EPCTG1A IS-200-EPCTG-1A IS200 EPCTG1A
Technical notes
IS200EPCTG1A current inputs use non-pluggable terminal blocks for ring terminals, so CT circuits require deliberate isolation before board work.
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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 IS200EPCTG1A show normal voltage but incorrect calculated power?
Check the IS200EPCTG1A phase A and C CT polarity and ratio because power calculations combine current with PT measurements.
What should be reviewed when IS200EPCTG1A reports a PT-failure condition?
Compare both IS200EPCTG1A three-phase PT inputs, their fuses and open-delta wiring before tracing the EMIO path.
Can a 5 A CT secondary be moved to IS200EPCTG1A without range checks?
No. Confirm the IS200EPCTG1A CT input is arranged for the 0-5 A range and preserve phase and polarity.
Why might the IS200EPCTG1A customer analog input read the wrong engineering value?
Verify whether IS200EPCTG1A is jumpered for ±10 V dc or 4-20 mA and match the controller scaling to that mode.
How should long PT or CT runs to IS200EPCTG1A be assessed?
Keep IS200EPCTG1A instrument wiring within the supported 1,000 ft run and use the permitted conductor sizes and terminations.
What wiring mistake can reverse reactive-power behavior from IS200EPCTG1A?
Incorrect IS200EPCTG1A CT polarity or phase association can invert the current relationship used for reactive-power calculation.
Which checks help isolate an IS200EPCTG1A input fault from EMIO?
Measure the IS200EPCTG1A low-level output and compare it with the corresponding PT or CT input before testing the EMIO channel.