General electric IS2020RKPSG2A Power Supply Module

Technical Specifications

The GE IS2020RKPSG2A functions as a high-capacity VME rack power supply (RKPS) specifically engineered for the Mark VI Speedtronic Turbine Control System. This module provides the essential regulated voltages required to drive the control logic and peripheral boards within a VME rack. By delivering a stable 400W output from a 125VDC nominal input, the unit ensures that automated turbine assemblies for steam, gas, and wind applications maintain continuous operation. As a core component of the Mark VI series, this power supply represents the evolution of GE’s proprietary control technology, prioritizing both electrical isolation and thermal resilience.

Thermal Management and Hardware Interface

The mechanical design of the IS2020RKPSG2A prioritizes longevity through superior heat dissipation. Large metal cooling fins occupy the side of the chassis, acting as a passive heat sink to manage the thermal load during high-demand cycles. The front faceplate serves as the primary diagnostic interface, featuring an integrated power switch alongside status LEDs in green, yellow, and red. These indicators allow maintenance personnel to verify the operational state of the rack at a glance. Additionally, the faceplate contains dedicated fields for recording the serial number and revision history, which simplifies asset tracking and maintenance scheduling.

Power Distribution and Connection Architecture

• High-Power Capacity: The unit converts a 125VDC input into a total output power of 400W, sufficient for fully populated VME racks.
• Redundant Voltage Outputs: The module generates five primary +28V outputs alongside a specialized remote +28V output for auxiliary logic.
• Comprehensive Connector Suite: Connectivity includes dedicated ports labeled PSA, PSB, PS335, PS28, and PSSTAT to ensure seamless integration with the rack backplane.
• Input Flexibility: While optimized for 125VDC, the architecture supports various configuration variants for specific power plant environments.
• Fault Protection: Internal circuitry monitors for over-voltage or current irregularities, triggering a shutdown of specific outputs to protect downstream components.
• Integrated Diagnostics: The PSSTAT connector facilitates real-time health reporting to the central controller for predictive maintenance.