Basic Information

• Model: IS200JPDDG1AAA (JPDD: Junction Power Distribution DC, DC Power Distribution Branch Board)

• Brand & Series: GE Speedtronic Mark VI / Mark VIe Turbine Control System, EX2100 Excitation Control System

• Product Type: DC Power Distribution Board, I/O Pack Power Branch Distribution Board, System Power Protection & Splitting Module

• Compatible Systems: GE Mark VI/Mark VIe TMR (Triple Modular Redundant) Control System, EX2100 Excitation System, compatible with Mark VI standard cabinets, Rack Power Unit (RPU), I/O Pack (PDM), JPD series power sub‑boards

• Country of Origin: USA

• Function: Serves as the core DC power branch distribution unit for the Mark VI system, receiving main power input, splitting one DC power source into multiple outputs for I/O modules, control boards and subsystems, providing overcurrent/short‑circuit protection and power status monitoring to ensure stable, safe and independent power supply for all system loads.

Product Overview

Core Functions

1. Multi‑Channel DC Power Splitting & Distribution: Splits a single main DC power source (24/48/125VDC) into 6 independent DC output branches, providing stable and isolated branch power supply for Mark VI system I/O modules, control boards and subsystems, preventing single load failure from affecting the entire system.

2. Independent Branch Overcurrent/Short‑Circuit Protection: Each output branch is equipped with an independent fuse and a toggle switch for on/off control. Fuses blow automatically in case of overcurrent or short‑circuit, isolating faulty branches to protect the main power source and other normal loads and prevent fault propagation.

3. Real‑Time Power Status Monitoring: 6 LED indicators (corresponding to 6 output branches) display the normal/fault and on/off status of each branch in real‑time, quickly locating faulty branches and simplifying maintenance diagnosis.

4. Modular Power Distribution & Expansion: As a standard component of Mark VI system power branch circuits, it can work with JPDS/JPDM/JPDL power boards to build a complete I/O pack power distribution network, supporting system power expansion and flexible configuration.

5. Industrial‑Grade Reliable Protection: Wide temperature range, anti‑vibration, moisture/dust resistant, conformal coating, UL94 V‑0 flame retardant, suitable for harsh working conditions with strong EMI and hazardous areas, ensuring long‑term stable operation.

Technical Specifications

• Input Voltage: 24VDC, 48VDC, 125VDC (compatible with Mark VI system standard DC power)

• Output Configuration: 6 independent DC branches, each with 1 toggle switch + 2 fuses (12 fuses total), independent on/off/protection control

• Protection Method: Independent fuse overcurrent/short‑circuit protection for each branch, fault fuse isolation

• Status Indication: 6 LED indicators, corresponding to 6 output branches, displaying normal/fault status of branch power

• Interface Type: Power input/output terminal blocks, multi‑pin connectors (JD1‑JD6), TB1 conduction sensor interface

• Temperature: Operating -20°C to +60°C; Storage -40°C to +85°C

• Relative Humidity: 5%–95% (non‑condensing)

• Form Factor: Standard printed circuit board, fits Mark VI cabinet single slot, dimensions approx. 23.5cm × 10.8cm

• Protection Rating: IP20 (cabinet‑mounted), conformal coating, anti‑EMI/anti‑vibration design

• Certifications: CE, UL, CSA, Class I Div 2 (hazardous location approved)

• Weight: Approx. 0.5kg

Typical Applications

• DC power branch distribution and independent protection for I/O Pack (PDM) in Mark VI/Mark VIe gas/steam turbine control systems

• Multi‑channel DC power management for excitation sub‑modules and control boards in EX2100 excitation control systems

• Control system power distribution for generator sets in combined‑cycle power plants, thermal power plants, petrochemical drive units and offshore platforms

• Replacement of legacy power boards, power distribution network upgrades and power supply reliability retrofits for Mark VI systems

• Multi‑channel DC power splitting, overcurrent protection and status monitoring in industrial control systems