IS200JPDCG1ACB – GE Mark VI Power Distribution Board · JPDC Module

Module Snapshot

IS200JPDCG1ACB is a Power Distribution Module from General Electric Mark VIe series.
This JPDC board delivers 125 V DC, 115/230 V AC, and 28 V DC to turbine control system components.
Built with surface-mount technology, it integrates input/output functions from multiple legacy designs.
Ideal for gas and steam turbine management within Speedtronic control systems.

Core Specifications

• Part Number: IS200JPDCG1ACB
• Manufacturer: General Electric (GE)
• Series: Mark VIe · Speedtronic
• Functional Abbreviation: JPDC
• Revision: 1A · Normal Assembly
• Board Size: 6.75 x 19.0 in · Module: 7.0 x 20.4 x 3.0 in
• Mounting: Back-panel · vertical orientation
• Operating Temp: 0…60 °C
• Country of Origin: USA (Salem, VA)

Voltage Distribution & Physical Arrangement

• Output Voltages: 125 V DC · 115/230 V AC · 28 V DC
• Layout Strategy: Voltage levels increase top-to-bottom for safety isolation
• 28 V DC: Top and left side – low-voltage access
• 125 V DC: Center and right side – balanced mid-level
• 115/230 V AC: Bottom section – highest voltage, maximized safety
• Board Mount: Rigid steel base with standoffs and screw mounts
• Components: 20 fuses, 52 plug connectors (2-12 position), 2 LEDs, ribbon connector, transformer, transistors, varistors, capacitors, resistors, ICs

Installation Guidelines

• Orientation: Vertical mount · JAC connector (115/230V AC) at bottom
• Attachment: Four screws into dedicated mounting holes (top and bottom)
• Cabinet Position: Mount low in control cabinet for proper grounding
• Optional PPDA I/O Pack: Plug into connector JA1 · secure with angle bracket and nuts
• Diagnostic Feedback: Connect via 50-pin ribbon cable to connector P2
• Power Safety: Wait 30 seconds after power removal before re-energizing

Diagnostic Feedback Signals

• FDBK_A2: Monitors attenuated voltage difference between NDC bus and ground (~3.33% of actual). Opposite phase to FDBK_A1.
• FDBK_A3 / A4: Multiplexed feedback from J1S-T and J7A-C · requires PPDA I/O pack for demultiplexing.
• FDBK_A5: Scaled AC input voltage (~1.885% of actual) · real-time monitoring of operating parameters.
• FDBK_B1: Multiplexed feedback from Battery 1/2 inputs and JAC1/JAC2 outputs · requires PPDA demultiplexing.
• Purpose: Enables maintenance personnel to monitor, diagnose, and optimize system reliability.

Oiltech Controls’s Insight

• The IS200JPDCG1ACB is a critical component in GE Speedtronic Mark VIe turbine control systems.
• Its layered voltage distribution (28V/125V/230V) simplifies troubleshooting and reduces cross-interference.
• Diagnostic feedback signals (FDBK_A2–B1) provide real-time health monitoring without additional sensors.
• For legacy Mark VI upgrades, this board replaces older JPDC variants with improved component density.
• Typical applications: gas turbine generators, steam turbine drivers, and wind turbine power conversion.

Compatible Equipment

• • Mark VIe turbine control systems (gas and steam)
• • Speedtronic series cabinets and backplanes
• • PPDA I/O packs (optional plug-in)
• • Modicon Quantum series via Modbus gateway (legacy integration)
• • GE Mark VI VME chassis and power supplies

Expert FAQ – Selection & Operation

• Q: Does IS200JPDCG1ACB work with Mark V systems?
  No. It is specifically designed for Mark VIe. For Mark V, use IS200JPDCG1 (parent board without A revision).
• Q: What does the “A” revision indicate?
  “A” denotes functional revision 1A. It includes improved fuse ratings and diagnostic feedback filtering compared to base revision.
• Q: Can I replace fuses without removing the board?
  Yes. All 20 fuses are accessible from the top side. Always disconnect power and wait 30 seconds before replacement.
• Q: How to verify proper voltage distribution?
  Use FDBK_A5 to monitor AC input (scaled 1.885%) and FDBK_A2 for NDC bus ground differential. Compare with expected values in the Mark VIe manual.
• Q: What is the recommended mounting height in the cabinet?
  Mount low to ensure proper grounding. The JAC connector (115/230V AC) must face downward for thermal and safety compliance.

Delivery & Warranty

• Shipping: FedEx, UPS, DHL – 24–28 hours dispatch after order confirmation.
• Warranty: 12-month limited warranty against manufacturing defects.
• Package: 1x JPDC board only. Mounting screws and cables sold separately.

Why Oiltech Controls?

• ✓ 15+ years supplying industrial automation spare parts worldwide.
• ✓ Global express shipping – FedEx, UPS, DHL available.
• ✓ Every unit tested – surplus/refurbished options with full verification.
• ✓ 12-month warranty with technical support.
• ✓ Pre-shipment technical verification guarantees plug-and-play.
• ✓ Support for obsolete systems, including legacy Mark VI and Modicon Quantum.

Contact:
info@oiltechcontrols.com ·
+86 158 8020 0923 (WhatsApp)

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