Jump-type DC power distribution card IS200JPDMG1ACC S1AT005

The GE IS200JPDMG1ACC S1AT005 is a jump-type DC power distribution card (JPDM) for the Mark VI Speedtronic system.

Its core is used for 28V DC redundant power distribution and fault diagnosis in steam turbine control, and is compatible with the R/S/T three-bus architecture.

Equipped with independent fuse protection and PPDA status feedback, it meets the compliance requirements of Class 1 Div 2 hazardous areas, ensuring stable power supply for I/O modules and control loops.

The following are the core information and technical details:

I. Core Positioning and Basic Attributes

Project parameters

Model IS200JPDMG1ACC S1AT005 (S1AT005 is the batch/version code)

Brand GE Vernova

Series Mark VI Speedtronic

Type Jumper Power Distribution Card (JPDM, Jumper Power Distribution Card)

Compatible system Mark VI Gas/Steam Turbine Control system

Core functions: 28V DC redundant power distribution, three-bus (R/S/T) power supply, fuse protection, and fault diagnosis

Redundancy supports single-channel/redundant power input, compatible with the TMR triple module redundancy architecture

The supporting modules include PPDA power diagnosis package, JPDB/JPDF/JPDE and other distribution boards

Safety Certification Class 1 Div 2 (Applicable to Hazardous areas)

Ii. Key Technical Specifications

Power Supply and Capacity

Input: 28V DC redundant power supply, supporting 1 or more parallel inputs, with a total current capacity of approximately 25A.

Output: Three independent DC busbars for R/S/T, each output with an independent fuse protection to prevent short circuit spread.

Wiring: Equipped with 2-pin output connectors such as JCR/JCS/JCT, compatible with Mate-N-Lok connectors, and supports backplane bus power supply.

Diagnosis and Protection

Status feedback: Alarm signals such as bus voltage, ground fault, and DC bus overvoltage are uploaded through the PPDA I/O package.

Protection: Each output channel has an independent fuse, channel-level short-circuit protection, and electrical isolation between busbars.

Physics and Environment

Installation: DIN rail or standard rack mounting, compatible with Mark VI cabinet slot.

Environment: Operating temperature -30 ℃ to 65℃, humidity 5% to 95%, no condensation, resistant to electromagnetic interference.

Dimensions/Weight: Approximately 16.5cm×17.8cm, weight about 0.9kg, modular design for easy maintenance.

Iii. Core Functions and Applications

Redundant power supply distribution: Allocate the 28V DC redundant power supply to the R/S/T three buses to adapt to the I/O modules, controllers and other loads under the TMR architecture, ensuring uninterrupted power supply for the system.

Fault isolation and diagnosis: Independent fuses prevent single-circuit short circuits from affecting the overall situation. Combined with PPDA for real-time monitoring of power supply status, faults such as grounding and overvoltage can be quickly located.

Hazardous area adaptation: Class 1 Div 2 certification, suitable for potential hazardous environments such as gas turbine rooms, enhancing system safety.

Typical applications: 28V DC stable power supply and fault monitoring for gas/steam turbine control circuits, fuel valve servo systems, I/O module groups, and safety relay circuits.

Iv. Selection and Maintenance Tips

Redundant configuration: The TMR system needs to be configured in accordance with the corresponding R/S/T three buses, and be equipped with redundant power modules to ensure that any power failure does not affect the system operation.

Fuse selection: Choose the appropriate fuse specification based on the load current to avoid overcurrent or false protection.

Diagnostic configuration: It must be interconnected with the PPDA module, enabling alarm functions such as ground faults and overvoltage, and connected to the controller for remote monitoring.

Version distinction: The main differences from models such as IS200JPDMG1ADC lie in the interface and current capacity, which need to be matched according to the system manual.

V. Core Advantages

High reliability: Redundant input + independent fuses ensure continuous power supply and fault isolation.

Easy to diagnose: PPDA status feedback enables quick location of power supply faults and reduces maintenance time.

Strong adaptability: Compatible with TMR architecture and hazardous areas, suitable for harsh industrial scenarios such as steam turbines.