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IS200EPDMG1BAA-IS200EPDMG1B

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General Electric IS200EPDMG1BAA-IS200EPDMG1B is A fused, manually isolated power distribution module for Mark VI/EX2100, converting 125Vdc/115Vac to EGPA, EPSM, and protection circuits.
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Technical specifications for IS200EPDMG1BAA-IS200EPDMG1B

  • Manufacturer:
    General Electric
  • Part Number:
    IS200EPDMG1BAA-IS200EPDMG1B
  • Product Family:
    GE Mark VI Gas Turbine Control
  • Product Type:
    Exciter Power Distribution Module
  • Stock:
    2
  • Input Voltage (DC):
    125 Vdc (Station Battery – Main Source)
  • Input Voltage (AC):
    115 Vac ±15%, 50/60 Hz (Auxiliary – via DACA)
  • Internal DC Bus:
    P125V / N125V (Center Grounded, ±62.5V to Ground)
  • Output Protection:
    Fused outputs (FUT13, 14, 15, 16, FU18)
  • Isolation Method:
    Individual Toggle Switches (SM1C, SM2, SM3A, SM4A)
  • Indicators:
    Green LED for P12.5V & Output Health
  • Mounting:
    Side-mount on EPBP Backplane
  • Weight:
    0.66 kg
  • Estimated shipping dimensions:
    33x12.6x4cm
  • 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 Specifications Applications Performance & Efficiency Safety & Compliance

Features:

  • Live Maintenance with Individual Load Isolation
  • Enhanced Diagnostic Visibility via Fused Outputs
  • Robust Power Mixing via Diode Coupling
The General Electric IS200EPDMG1BAA-IS200EPDMG1B includes dedicated toggle switches (SM1C, SM2, SM3A, SM4A) for each output channel. This allows plant engineers to selectively depower a faulty EGPA board or an EPSM power supply while leaving the rest of the Mark VI system online, eliminating unnecessary turbine trips during diagnostic procedures.

Visual inspection is simplified with status LEDs and clearly labeled fuses (FUT13-16). The General Electric IS200EPDMG1BAA-IS200EPDMG1B enables rapid fault identification—if an LED is off, engineers check the corresponding fuse without needing a multimeter. This feature directly supports GE’s "Maintainability First" design philosophy for the EX2100 series.

Unlike standard terminal blocks that short supplies together, the General Electric IS200EPDMG1BAA-IS200EPDMG1B uses internal diode coupling to combine 125Vdc battery and rectified 115Vac sources. This prevents back-feeding current from one source to another, ensuring stable P125V/N125V power rails even if one input source fails or sags during generator startup.

The IS200EPDMG1BAA-IS200EPDMG1B General Electric Exciter Power Distribution Modulee may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
General Electric IS200EPDMG1BAA-IS200EPDMG1B Exciter Power Distribution Module Manuals,Datasheets,Link 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.
General Electric IS200EPDMG1BAA-IS200EPDMG1B Exciter Power Distribution Module

General

  • Manufacturer General Electric
  • Model IS200EPDMG1BAA-IS200EPDMG1B
  • Condition New Original ready stock
  • Product Family IS200EPSMG1ADC,IS200EPSMG1AEC,IS200EPCTG1AAA
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.
  • Gas Turbine Start-Up: Provides the P125V rail for EGPA gate pulse amplifiers in GE 6FA/7EA fleets.
  • Steam Turbine Retrofit: Installed in EX2100 cabinets replacing older analog De-excitation systems.
  • Hydro Generators: Distributes power to Field Ground Detector (EGDM) modules in high-moisture environments.
  • Combined Cycle Plants: Serves as the central 125Vdc distribution hub for Mark VI turbine control retrofits.
  • High MTBF: Designed for 25,000+ hours Mean Time Between Failures (Simplex), reducing unplanned outages.
  • Low Voltage Drop: The diode-coupled input stage ensures less than 1V loss between the battery source and the output fuses.
  • Rapid Fault Recovery: Toggle switches allow sub-system isolation in under 5 minutes, eliminating the need for full cabinet de-energization.
  • Thermal Efficiency: Passively cooled design (0 CFM required) ensures zero noise and no internal dust accumulation on the PCB.
  • Protection: ANSI/IEEE C37.90 – Withstands 2.5kV impulse voltage tests.
  • Coating: Conformal coated PCB meeting IPC-CC-830B for humidity resistance.
  • Isolation: Reinforced insulation between primary 125Vdc bus and chassis ground (P125V/N125V center grounding).
  • Flammability: UL 94 V-0 rated PCB material.
Description
The General Electric IS200EPDMG1BAA-IS200EPDMG1B acts as the central power hub in the EX2100 static excitation system. Mounted directly on the EPBP backplane, this EPDM board accepts redundant power inputs from station batteries (125Vdc) and AC auxiliary sources (115Vac). Inside the cabinet, the AC input is rectified by a DACA module to 125Vdc, which is then diode-coupled with the battery supply to create a highly reliable, dual-redundant DC bus (P125V / N125V).

Unlike simple terminal blocks, the General Electric IS200EPDMG1BAA-IS200EPDMG1B offers granular control over system power distribution. It features multiple fused outputs (including FUT13-16 and FU18 visible on the board) with individual ON/OFF toggle switches. This design allows technicians to isolate specific loads—such as an EGPA gate driver or an EXTB terminal board—without de-energizing the entire control cabinet. Green LEDs provide immediate visual confirmation of healthy supply rails, drastically reducing Mean Time To Repair (MTTR) during turbine outages.

IS200EPDMG1BAA-IS200EPDMG1B is often supplied with the PS20 DEPMGBABA sub-board (as seen in current revisions), which conditions the internal logic voltages. The board is coated with a conformal layer to resist dust and humidity in harsh power plant environments, ensuring reliable SCR firing signals even under high electrical noise conditions.
Alternative Names
IS200EPDMG1BAAIS200EPDMG1B IS200EPDMG1BAA IS200EPDMG1B IS2OOEPDMG1BAA-IS2OOEPDMG1B IS200EPSMG1ADC IS200EPSMG1AEC DS200TBPAG1ACC IS200EPCTG1AAA
Technical notes
Users must verify the AC line voltage (120VAC nominal) before energizing the DACA converter. The General Electric IS200EPDMG1BAA-IS200EPDMG1B is not hot-swappable; always disconnect the upstream 125Vdc battery breaker before removing the module. Replacement of this GE part requires verifying the revision compatibility with the EPBP backplane (IS200EPBPG1), though the "BAA" suffix generally indicates backward compatibility with older "1B" versions.
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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 are the exact fuse ratings for the General Electric IS200EPDMG1BAA-IS200EPDMG1B for downstream protection?
The General Electric IS200EPDMG1BAA-IS200EPDMG1B uses specific amperage fuses for FUT13-16 and FU18. While the exact value depends on the specific EX2100 bridge configuration, these fuses are typically rated to protect 20A circuits feeding the EGPA boards. Always verify the silkscreen on the physical board (e.g.,
Is the General Electric IS200EPDMG1BAA-IS200EPDMG1B compatible with third-party DCS systems?
Indirectly. The General Electric IS200EPDMG1BAA-IS200EPDMG1B handles internal power distribution only. It does not process control logic. However, if your third-party DCS requires 125Vdc wetting contacts or status feedback, the P125V rail generated by this module can be used to power EXTB relay outputs, ensuring protocol-free voltage compatibility.
What are the environmental limits for installing the General Electric IS200EPDMG1BAA-IS200EPDMG1B?
The General Electric IS200EPDMG1BAA-IS200EPDMG1B is designed for NEMA 1 / IP20 enclosures. The operating ambient temperature range is 0°C to 40°C (32°F to 104°F) with 5% to 95% non-condensing humidity. Storage can extend to -40°C to +70°C. Installation above 1000m altitude requires a 6% voltage derating per 1000m.
Is the General Electric IS200EPDMG1BAA considered obsolete? Is there a migration path?
While the EX2100 platform is mature, the General Electric IS200EPDMG1BAA-IS200EPDMG1B is maintained as a renewal spare. There is no direct