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IS200EXAMG1A

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GE IS200EXAMG1A scales field-bus and potential-transformer voltages for the EX2100 ground-detection circuit and controls the low-frequency test signal applied to the generator field.
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Technical specifications for IS200EXAMG1A

  • Manufacturer:
    General Electric
  • Part Number:
    IS200EXAMG1A
  • Product Family:
    GE Mark VI Gas Turbine Control
  • Product Type:
    EX2100 Exciter Attenuation Module
  • Stock:
    1
  • Installation Location:
    High Voltage Interface module in the auxiliary cabinet
  • Field-Bus Voltage Range:
    125–1000 VDC
  • PPT Voltage Range:
    120–1300 VAC RMS
  • Ground-Detector Pairing:
    EGDM
  • Field Connections:
    Positive and negative field-bus inputs
  • Test Source:
    Low-frequency AC relative to ground
  • Relay Coil:
    24 VDC
  • Relay Coil Current:
    Less than 20 mA
  • Maximum Test Duration:
    10 seconds
  • Filter Selection:
    JP1 and JP2 for below/above 750 VAC
  • Additional Configuration:
    JP3 as documented for the installation
  • Cable Interfaces:
    J1 and J2
  • Construction:
    Bridge and protection module
  • Dimensions:
    23 × 19.2 × 3.2 cm
  • Weight:
    0.5 kg
  • Tariff Code:
    8538900000
  • 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 Ground-Detection Path Attenuation Selection Test Relay Application
  • Attenuates field-bus and PPT voltages for the EGDM measurement path
  • Uses selectable filter capacitance for installations below or above 750 VAC
  • Drives the ground-detection test relay for controlled field-to-ground excitation

IS200EXAMG1A is installed in the High Voltage Interface section of an EX2100 auxiliary cabinet, where it forms the voltage-scaling boundary between the power circuit and the Exciter Ground Detector Module.

Precision networks reduce the positive and negative field-bus potentials and the power-potential-transformer signal to levels that EGDM can evaluate for insulation leakage and field-ground conditions.

The jumper arrangement must remain aligned with the actual PPT voltage class; incorrect capacitance selection can change the ground-detection response even when all connectors fit.

Availability, condition, price, and shipping time for IS200EXAMG1A are confirmed during quotation.

General Electric IS200EXAMG1A EX2100 Exciter Attenuation Module Product Family, Support, 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.

  • Positive and negative field-bus potentials enter separate attenuation paths
  • The scaled signals are presented to the Exciter Ground Detector Module
  • Protective grounding completes the measurement reference
  • JP1 and JP2 adapt the network to the installed PPT voltage class
  • The 750 VAC boundary separates the documented selections
  • The original project setting must be recorded before board exchange
  • EGDM commands a 24 VDC relay on the module
  • The relay applies the low-frequency test signal to the field
  • The approved test limits each application to the documented duration
  • EX2100 generator field-ground fault detection
  • Static excitation field-bus voltage attenuation
  • Controlled low-frequency insulation test injection
Description
IS200EXAMG1A is the attenuation and test-injection module used by EX2100 field-ground protection.

It scales 125–1000 VDC field-bus inputs and a 120–1300 VAC RMS PPT source, then switches a low-frequency test path through a 24 VDC relay controlled by EGDM.

Before energizing, verify E1/E2 polarity, J1/J2 cable identity, protective ground, JP1/JP2 filter selection and the complete G1A board code; validate the ground detector with the approved test sequence.
Revisions

Revision Part #

Also known as

IS200EXAMG1A
IS200EXAMG1A, Series A, Rev A
Alternative Names
IS200 EXAM G1A IS200-EXAM-G1A EXAM G1A GE IS200EXAMG1A General Electric IS200EXAMG1A EX2100 EXAM IS200EXAMG1A
Technical notes
IS200EXAMG1A must match the EX2100 HVI assembly, EGDM interface, field-bus and PPT voltage ranges, E1/E2 polarity, J1/J2 routing, JP1–JP3 settings and approved ground-detection test procedure.
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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.
What installation data decides whether IS200EXAMG1A is the correct EXAM?
Confirm the complete G1A label, EX2100 project, field-bus voltage, PPT voltage, EGDM execution and the original JP1/JP2/JP3 positions.
Why must IS200EXAMG1A jumper settings be recorded before removal?
JP1 and JP2 change the attenuation filter for the PPT voltage class; copying an unrelated board setting can distort the injected test signal.
What should be checked if IS200EXAMG1A ground detection becomes unstable?
Inspect E1/E2 polarity, J1/J2 seating, protective ground, EGDM connection, relay operation and the selected capacitance before changing thresholds.
Can IS200EXAMG1A be handled immediately after shutdown?
No. Treat the field-bus and PPT circuits as hazardous, follow the discharge procedure and prove absence of voltage before touching the module.
Does IS200EXAMG1A perform the ground-fault decision itself?
No. EXAM attenuates and switches the test path; EGDM evaluates the resulting signal and reports the ground-detection condition.
What functional test is appropriate after replacing IS200EXAMG1A?
Use the approved EX2100 field-ground test, confirm relay pickup and release, verify scaled positive/negative bus response and check that no diagnostic remains active.
Can IS200EXAMG1A be substituted with IS200EXAMG2A?
Not from the acronym alone. Compare the group execution, cabinet wiring, voltage range, jumper plan and the GE project material list before approving any substitution.